build: separate compiler and libs

compiler/chore/_deprecated/ar/ar.go

@@ -0,0 +1,259 @@
+/*
+ * Copyright (c) 2023 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package ar
+
+import (
+	"bytes"
+	"debug/elf"
+	"debug/pe"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"time"
+
+	wasm "github.com/aykevl/go-wasm"
+	"github.com/goplus/llgo/xtool/ar"
+)
+
+// Create creates an arcive for static linking from a list of object files
+// given as a parameter. It is equivalent to the following command:
+//
+//	ar -rcs <archivePath> <objs...>
+func Create(arfile string, objs []string) error {
+	f, err := os.Create(arfile)
+	if err != nil {
+		return err
+	}
+	err = Make(f, objs)
+	f.Close()
+	if err != nil {
+		os.Remove(arfile)
+	}
+	return err
+}
+
+// Make creates an arcive for static linking from a list of object files
+// given as a parameter. It is equivalent to the following command:
+//
+//	ar -rcs <archivePath> <objs...>
+func Make(arfile io.WriteSeeker, objs []string) error {
+	// Open the archive file.
+	arwriter := ar.NewWriter(arfile)
+	err := arwriter.WriteGlobalHeader()
+	if err != nil {
+		return err
+	}
+
+	// Open all object files and read the symbols for the symbol table.
+	symbolTable := []struct {
+		name      string // symbol name
+		fileIndex int    // index into objfiles
+	}{}
+	archiveOffsets := make([]int32, len(objs))
+	for i, objpath := range objs {
+		objfile, err := os.Open(objpath)
+		if err != nil {
+			return err
+		}
+
+		// Read the symbols and add them to the symbol table.
+		if dbg, err := elf.NewFile(objfile); err == nil {
+			symbols, err := dbg.Symbols()
+			if err != nil {
+				return err
+			}
+			for _, symbol := range symbols {
+				bind := elf.ST_BIND(symbol.Info)
+				if bind != elf.STB_GLOBAL && bind != elf.STB_WEAK {
+					// Don't include local symbols (STB_LOCAL).
+					continue
+				}
+				if elf.ST_TYPE(symbol.Info) != elf.STT_FUNC && elf.ST_TYPE(symbol.Info) != elf.STT_OBJECT {
+					// Not a function.
+					continue
+				}
+				// Include in archive.
+				symbolTable = append(symbolTable, struct {
+					name      string
+					fileIndex int
+				}{symbol.Name, i})
+			}
+		} else if dbg, err := pe.NewFile(objfile); err == nil {
+			for _, symbol := range dbg.Symbols {
+				if symbol.StorageClass != 2 {
+					continue
+				}
+				if symbol.SectionNumber == 0 {
+					continue
+				}
+				symbolTable = append(symbolTable, struct {
+					name      string
+					fileIndex int
+				}{symbol.Name, i})
+			}
+		} else if dbg, err := wasm.Parse(objfile); err == nil {
+			for _, s := range dbg.Sections {
+				switch section := s.(type) {
+				case *wasm.SectionImport:
+					for _, ln := range section.Entries {
+
+						if ln.Kind != wasm.ExtKindFunction {
+							// Not a function
+							continue
+						}
+						symbolTable = append(symbolTable, struct {
+							name      string
+							fileIndex int
+						}{ln.Field, i})
+					}
+				}
+			}
+		} else {
+			return fmt.Errorf("failed to open file %s as WASM, ELF or PE/COFF: %w", objpath, err)
+		}
+
+		// Close file, to avoid issues with too many open files (especially on
+		// MacOS X).
+		objfile.Close()
+	}
+
+	// Create the symbol table buffer.
+	// For some (sparse) details on the file format:
+	// https://en.wikipedia.org/wiki/Ar_(Unix)#System_V_(or_GNU)_variant
+	buf := &bytes.Buffer{}
+	binary.Write(buf, binary.BigEndian, int32(len(symbolTable)))
+	for range symbolTable {
+		// This is a placeholder index, it will be updated after all files have
+		// been written to the archive (see the end of this function).
+		err = binary.Write(buf, binary.BigEndian, int32(0))
+		if err != nil {
+			return err
+		}
+	}
+	for _, sym := range symbolTable {
+		_, err := buf.Write([]byte(sym.name + "\x00"))
+		if err != nil {
+			return err
+		}
+	}
+	for buf.Len()%2 != 0 {
+		// The symbol table must be aligned.
+		// This appears to be required by lld.
+		buf.WriteByte(0)
+	}
+
+	// Write the symbol table.
+	err = arwriter.WriteHeader(&ar.Header{
+		Name:    "/",
+		ModTime: time.Unix(0, 0),
+		Uid:     0,
+		Gid:     0,
+		Mode:    0,
+		Size:    int64(buf.Len()),
+	})
+	if err != nil {
+		return err
+	}
+
+	// Keep track of the start of the symbol table.
+	symbolTableStart, err := arfile.Seek(0, io.SeekCurrent)
+	if err != nil {
+		return err
+	}
+
+	// Write symbol table contents.
+	_, err = arfile.Write(buf.Bytes())
+	if err != nil {
+		return err
+	}
+
+	// Add all object files to the archive.
+	var copyBuf bytes.Buffer
+	for i, objpath := range objs {
+		objfile, err := os.Open(objpath)
+		if err != nil {
+			return err
+		}
+		defer objfile.Close()
+
+		// Store the start index, for when we'll update the symbol table with
+		// the correct file start indices.
+		offset, err := arfile.Seek(0, io.SeekCurrent)
+		if err != nil {
+			return err
+		}
+		if int64(int32(offset)) != offset {
+			return errors.New("large archives (4GB+) not supported")
+		}
+		archiveOffsets[i] = int32(offset)
+
+		// Write the file header.
+		st, err := objfile.Stat()
+		if err != nil {
+			return err
+		}
+		err = arwriter.WriteHeader(&ar.Header{
+			Name:    filepath.Base(objfile.Name()),
+			ModTime: time.Unix(0, 0),
+			Uid:     0,
+			Gid:     0,
+			Mode:    0644,
+			Size:    st.Size(),
+		})
+		if err != nil {
+			return err
+		}
+
+		// Copy the file contents into the archive.
+		// First load all contents into a buffer, then write it all in one go to
+		// the archive file. This is a bit complicated, but is necessary because
+		// io.Copy can't deal with files that are of an odd size.
+		copyBuf.Reset()
+		n, err := io.Copy(&copyBuf, objfile)
+		if err != nil {
+			return fmt.Errorf("could not copy object file into ar file: %w", err)
+		}
+		if n != st.Size() {
+			return errors.New("file modified during ar creation")
+		}
+		_, err = arwriter.Write(copyBuf.Bytes())
+		if err != nil {
+			return fmt.Errorf("could not copy object file into ar file: %w", err)
+		}
+
+		// File is not needed anymore.
+		objfile.Close()
+	}
+
+	// Create symbol indices.
+	indicesBuf := &bytes.Buffer{}
+	for _, sym := range symbolTable {
+		err = binary.Write(indicesBuf, binary.BigEndian, archiveOffsets[sym.fileIndex])
+		if err != nil {
+			return err
+		}
+	}
+
+	// Overwrite placeholder indices.
+	if _, err = arfile.Seek(symbolTableStart+4, io.SeekStart); err == nil {
+		_, err = arfile.Write(indicesBuf.Bytes())
+	}
+	return err
+}

compiler/chore/_deprecated/clang/parser/pages.go

@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2022 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package parser
+
+// -----------------------------------------------------------------------------
+
+const pageSize = 1024 * 1024
+
+type PagedWriter struct {
+	pages []*[pageSize]byte
+	last  *[pageSize]byte
+	off   int
+}
+
+func NewPagedWriter() *PagedWriter {
+	return &PagedWriter{last: new([pageSize]byte)}
+}
+
+func (p *PagedWriter) Write(buf []byte) (written int, err error) {
+	for {
+		n := copy(p.last[p.off:], buf[written:])
+		written += n
+		if written >= len(buf) {
+			p.off += n
+			return
+		}
+		p.pages = append(p.pages, p.last)
+		p.last, p.off = new([pageSize]byte), 0
+	}
+}
+
+func (p *PagedWriter) Len() int {
+	return len(p.pages)*pageSize + p.off
+}
+
+func (p *PagedWriter) Bytes() []byte {
+	out, n := make([]byte, p.Len()), 0
+	for _, page := range p.pages {
+		n += copy(out[n:], page[:])
+	}
+	copy(out[n:], p.last[:p.off])
+	return out
+}
+
+/*
+func (p *PagedWriter) ToReader() *PagedReader {
+	return &PagedReader{src: p, curr: p.getPage(0)}
+}
+
+func (p *PagedWriter) getPage(ipage int) []byte {
+	if ipage == len(p.pages) { // last page
+		return p.last[:p.off]
+	}
+	return p.pages[ipage][:]
+}
+
+// -----------------------------------------------------------------------------
+
+type PagedReader struct {
+	src   *PagedWriter
+	curr  []byte
+	off   int
+	ipage int
+}
+
+func (p *PagedReader) WriteTo(w io.Writer) (written int64, err error) {
+	n, err := w.Write(p.curr[p.off:])
+	written = int64(n)
+	if err != nil {
+		return
+	}
+	src, ipage := p.src, p.ipage
+	for {
+		if ipage == len(src.pages) { // last page
+			p.ipage, p.off = ipage, len(p.curr)
+			return
+		}
+		ipage++
+		page := src.getPage(ipage)
+		n, err = w.Write(page)
+		written += int64(n)
+		if err != nil {
+			p.ipage, p.curr, p.off = ipage, page, n
+			return
+		}
+	}
+}
+
+func (p *PagedReader) Read(buf []byte) (nread int, err error) {
+	for {
+		n := copy(buf[nread:], p.curr[p.off:])
+		nread += n
+		p.off += n
+		if nread >= len(buf) {
+			return
+		}
+		src := p.src
+		if p.ipage == len(src.pages) { // last page
+			err = io.EOF
+			return
+		}
+		p.ipage++
+		p.curr, p.off = src.getPage(p.ipage), 0
+	}
+}
+*/
+
+// -----------------------------------------------------------------------------

compiler/chore/_deprecated/clang/parser/parse.go

@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2022 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package parser
+
+import (
+	"bytes"
+	"os"
+	"os/exec"
+	"strings"
+
+	"github.com/goplus/llgo/xtool/clang/ast"
+	jsoniter "github.com/json-iterator/go"
+)
+
+type Mode uint
+
+// -----------------------------------------------------------------------------
+
+type ParseError struct {
+	Err    error
+	Stderr []byte
+}
+
+func (p *ParseError) Error() string {
+	if len(p.Stderr) > 0 {
+		return string(p.Stderr)
+	}
+	return p.Err.Error()
+}
+
+// -----------------------------------------------------------------------------
+
+type Config struct {
+	Json   *[]byte
+	Flags  []string
+	Stderr bool
+}
+
+func DumpAST(filename string, conf *Config) (result []byte, warning []byte, err error) {
+	if conf == nil {
+		conf = new(Config)
+	}
+	skiperr := strings.HasSuffix(filename, "vfprintf.c.i")
+	stdout := NewPagedWriter()
+	stderr := new(bytes.Buffer)
+	args := []string{"-Xclang", "-ast-dump=json", "-fsyntax-only", filename}
+	if len(conf.Flags) != 0 {
+		args = append(conf.Flags, args...)
+	}
+	cmd := exec.Command("clang", args...)
+	cmd.Stdin = os.Stdin
+	cmd.Stdout = stdout
+	if conf.Stderr && !skiperr {
+		cmd.Stderr = os.Stderr
+	} else {
+		cmd.Stderr = stderr
+	}
+	err = cmd.Run()
+	errmsg := stderr.Bytes()
+	if err != nil && !skiperr {
+		return nil, nil, &ParseError{Err: err, Stderr: errmsg}
+	}
+	return stdout.Bytes(), errmsg, nil
+}
+
+// -----------------------------------------------------------------------------
+
+var json = jsoniter.ConfigCompatibleWithStandardLibrary
+
+func ParseFileEx(filename string, mode Mode, conf *Config) (file *ast.Node, warning []byte, err error) {
+	out, warning, err := DumpAST(filename, conf)
+	if err != nil {
+		return
+	}
+	if conf != nil && conf.Json != nil {
+		*conf.Json = out
+	}
+	file = new(ast.Node)
+	err = json.Unmarshal(out, file)
+	if err != nil {
+		err = &ParseError{Err: err}
+	}
+	return
+}
+
+func ParseFile(filename string, mode Mode) (file *ast.Node, warning []byte, err error) {
+	return ParseFileEx(filename, mode, nil)
+}
+
+// -----------------------------------------------------------------------------

compiler/chore/_deprecated/clangast/clangast.go

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2022 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/goplus/llgo/_xtool/clang/parser"
+)
+
+var (
+	dump = flag.Bool("dump", false, "dump AST")
+)
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "Usage: clangast [-dump] source.i\n")
+	flag.PrintDefaults()
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	if flag.NArg() < 1 {
+		usage()
+		return
+	}
+	var file = flag.Arg(0)
+	var err error
+	if *dump {
+		doc, _, e := parser.DumpAST(file, nil)
+		if e == nil {
+			os.Stdout.Write(doc)
+			return
+		}
+		err = e
+	} else {
+		doc, _, e := parser.ParseFile(file, 0)
+		if e == nil {
+			enc := json.NewEncoder(os.Stdout)
+			enc.SetIndent("", "  ")
+			check(enc.Encode(doc))
+			return
+		}
+		err = e
+	}
+	fmt.Fprintln(os.Stderr, err)
+	os.Exit(1)
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}

compiler/chore/_deprecated/go.mod

@@ -0,0 +1,14 @@
+module github.com/goplus/llgo/_xtool
+
+go 1.20
+
+require (
+	github.com/aykevl/go-wasm v0.0.1
+	github.com/goplus/llgo v0.9.0
+	github.com/json-iterator/go v1.1.12
+)
+
+require (
+	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+)

compiler/chore/_deprecated/go.sum

@@ -0,0 +1,19 @@
+github.com/aykevl/go-wasm v0.0.1 h1:lPxy8l48P39W7I0tLrtCrLfZBOUq9IWZ7odGdyJP2AM=
+github.com/aykevl/go-wasm v0.0.1/go.mod h1:b4nggwg3lEkNKOU4wzhtLKz2q2sLxSHFnc98aGt6z/Y=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/goplus/llgo v0.9.0 h1:yaJzQperGUafEaHc9VlVQVskIngacoTNweEXY0GRi0Q=
+github.com/goplus/llgo v0.9.0/go.mod h1:M3UwiYdPZFyx7m2J0+6Ti1dYVA3uOO1WvSBocuE8N7M=
+github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 h1:ZqeYNhU3OHLH3mGKHDcjJRFFRrJa6eAM5H+CtDdOsPc=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
+github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=

compiler/chore/_xtool/astdump/astdump.cpp

@@ -0,0 +1,63 @@
+#include <clang-c/Index.h>
+#include <iostream>
+#include <string>
+
+CXChildVisitResult visit(CXCursor c, CXCursor parent, CXClientData client_data);
+
+void printAST(CXCursor cursor, unsigned int depth = 0) {
+    CXString cursorKind = clang_getCursorKindSpelling(clang_getCursorKind(cursor));
+    CXString cursorSpelling = clang_getCursorSpelling(cursor);
+
+    for (unsigned int i = 0; i < depth; ++i) {
+        std::cout << "  ";
+    }
+
+    std::cout << clang_getCString(cursorKind) << ": " 
+              << clang_getCString(cursorSpelling) << std::endl;
+
+    clang_disposeString(cursorKind);
+    clang_disposeString(cursorSpelling);
+
+    CXCursor child;
+    clang_visitChildren(
+        cursor,
+        visit,
+        &depth
+    );
+}
+
+CXChildVisitResult visit(CXCursor c, CXCursor parent, CXClientData client_data) {
+    unsigned int* depth = (unsigned int*)client_data;
+    printAST(c, *depth + 1);
+    return CXChildVisit_Continue;
+}
+
+int main(int argc, char* argv[]) {
+    if (argc < 2) {
+        std::cerr << "Usage: " << argv[0] << " <header_file>" << std::endl;
+        return 1;
+    }
+
+    CXIndex index = clang_createIndex(0, 0);
+    CXTranslationUnit unit = clang_parseTranslationUnit(
+        index,
+        argv[1],
+        nullptr, 0,
+        nullptr, 0,
+        CXTranslationUnit_None
+    );
+
+    if (unit == nullptr) {
+        std::cerr << "Unable to parse translation unit. Quitting." << std::endl;
+        return 1;
+    }
+
+    CXCursor cursor = clang_getTranslationUnitCursor(unit);
+    std::cout << "AST for " << argv[1] << ":" << std::endl;
+    printAST(cursor);
+
+    clang_disposeTranslationUnit(unit);
+    clang_disposeIndex(index);
+
+    return 0;
+}

compiler/chore/_xtool/astdump/build.sh

@@ -0,0 +1,2 @@
+export LLVM_DIR=$(llvm-config --prefix)
+clang -L$LLVM_DIR/lib -lclang -lc++ -I$LLVM_DIR/include astdump.cpp

compiler/chore/_xtool/castdump/castdump.go

@@ -0,0 +1,221 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+	"unsafe"
+
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/clang"
+)
+
+type Data struct {
+	Depth c.Uint
+	Unit  *clang.TranslationUnit
+}
+
+var accessMap = map[clang.CXXAccessSpecifier]string{
+	clang.CXXInvalidAccessSpecifier: "invalid",
+	clang.CXXPublic:                 "public",
+	clang.CXXProtected:              "protected",
+	clang.CXXPrivate:                "private",
+}
+
+func printIndent(depth c.Uint) {
+	fmt.Print(strings.Repeat("   ", int(depth)))
+}
+
+func accessToString(spec clang.CXXAccessSpecifier) string {
+	if str, ok := accessMap[spec]; ok {
+		return str
+	}
+	return "unknown"
+}
+
+func visit(cursor, parent clang.Cursor, ClientData c.Pointer) clang.ChildVisitResult {
+	data := (*Data)(ClientData)
+	printAST(cursor, data)
+	return clang.ChildVisit_Continue
+}
+
+func printType(t clang.Type, data *Data) {
+	printIndent(data.Depth)
+
+	typeSpell := t.String()
+	typeKind := t.Kind.String()
+
+	if t.Kind == clang.TypeInvalid {
+	} else if t.Kind == clang.TypeUnexposed {
+		c.Printf(c.Str("<UnexposedType|%s>: %s\n"), typeKind.CStr(), typeSpell.CStr())
+	} else if t.Kind >= clang.TypeFirstBuiltin && t.Kind <= clang.TypeLastBuiltin {
+		c.Printf(c.Str("<BuiltinType|%s>: %s\n"), typeKind.CStr(), typeSpell.CStr())
+	} else if t.Kind > clang.TypeComplex {
+		c.Printf(c.Str("<ComplexType|%s>: %s\n"), typeKind.CStr(), typeSpell.CStr())
+	}
+
+	data.Depth++
+	switch t.Kind {
+	case clang.TypePointer:
+		printType(t.PointeeType(), data)
+	case clang.TypeIncompleteArray, clang.TypeVariableArray, clang.TypeDependentSizedArray, clang.TypeConstantArray:
+		printType(t.ArrayElementType(), data)
+	case clang.TypeTypedef:
+		printType(t.TypeDeclaration().TypedefDeclUnderlyingType(), data)
+	case clang.TypeElaborated:
+		printType(t.NamedType(), data)
+	case clang.TypeFunctionProto:
+		printType(t.ResultType(), data)
+		for i := 0; i < int(t.NumArgTypes()); i++ {
+			printType(t.ArgType(c.Uint(i)), data)
+		}
+	}
+	data.Depth--
+
+	typeKind.Dispose()
+	typeSpell.Dispose()
+}
+
+func printLocation(cursor clang.Cursor) {
+	loc := cursor.Location()
+	var file clang.File
+	var line, column c.Uint
+
+	loc.SpellingLocation(&file, &line, &column, nil)
+	filename := file.FileName()
+	defer filename.Dispose()
+
+	c.Printf(c.Str("(Loc:%s:%d:%d)\n"), filename.CStr(), line, column)
+}
+
+func printAccess(cursor clang.Cursor) {
+	kind := cursor.Kind.String()
+	spell := cursor.String()
+	defer kind.Dispose()
+	defer spell.Dispose()
+
+	c.Printf(c.Str("%s: %s %s"), kind.CStr(), spell.CStr(), c.AllocaCStr(accessToString(cursor.CXXAccessSpecifier())))
+	printLocation(cursor)
+}
+
+func printMacro(cursor clang.Cursor, unit *clang.TranslationUnit) {
+	kind := cursor.Kind.String()
+	defer kind.Dispose()
+
+	c.Printf(c.Str("%s: "), kind.CStr())
+	ran := cursor.Extent()
+	var numTokens c.Uint
+	var tokens *clang.Token
+	unit.Tokenize(ran, &tokens, &numTokens)
+	defer unit.DisposeTokens(tokens, numTokens)
+
+	tokensSlice := unsafe.Slice(tokens, int(numTokens))
+	for _, tok := range tokensSlice {
+		tokStr := unit.Token(tok)
+		c.Printf(c.Str("%s "), tokStr.CStr())
+		tokStr.Dispose()
+	}
+	printLocation(cursor)
+}
+
+func printFunc(cursor clang.Cursor, data *Data) {
+	kind := cursor.Kind.String()
+	spell := cursor.String()
+	symbol := cursor.Mangling()
+	defer symbol.Dispose()
+	defer kind.Dispose()
+	defer spell.Dispose()
+
+	c.Printf(c.Str("%s: %s (Symbol: %s)"), kind.CStr(), spell.CStr(), symbol.CStr())
+	printLocation(cursor)
+	printType(cursor.Type(), data)
+}
+
+func printEnumConstant(cursor clang.Cursor) {
+	kind := cursor.Kind.String()
+	spell := cursor.String()
+	defer kind.Dispose()
+	defer spell.Dispose()
+
+	c.Printf(c.Str("%s: %s:%lld"), kind.CStr(), spell.CStr(), cursor.EnumConstantDeclValue())
+	printLocation(cursor)
+}
+
+func printDefault(cursor clang.Cursor, data *Data) {
+	kind := cursor.Kind.String()
+	spell := cursor.String()
+	defer kind.Dispose()
+	defer spell.Dispose()
+
+	// node which has type
+	if cursor.Type().Kind != clang.TypeInvalid {
+		c.Printf(c.Str("%s: %s"), kind.CStr(), spell.CStr())
+		printLocation(cursor)
+		printType(cursor.Type(), data)
+	} else {
+		c.Printf(c.Str("%s: %s\n"), kind.CStr(), spell.CStr())
+	}
+}
+
+func printAST(cursor clang.Cursor, data *Data) {
+	kind := cursor.Kind.String()
+	spell := cursor.String()
+
+	printIndent(data.Depth)
+
+	switch cursor.Kind {
+	case clang.CursorCXXAccessSpecifier:
+		printAccess(cursor)
+	case clang.CursorMacroDefinition:
+		printMacro(cursor, data.Unit)
+	case clang.CursorFunctionDecl, clang.CursorCXXMethod, clang.CursorConstructor, clang.CursorDestructor:
+		printFunc(cursor, data)
+	case clang.CursorEnumConstantDecl:
+		printEnumConstant(cursor)
+	default:
+		printDefault(cursor, data)
+	}
+
+	data.Depth++
+	clang.VisitChildren(cursor, visit, c.Pointer(data))
+	data.Depth--
+
+	kind.Dispose()
+	spell.Dispose()
+}
+
+func main() {
+	if c.Argc != 2 {
+		fmt.Fprintln(os.Stderr, "Usage: castdump <headerFile>")
+		return
+	}
+
+	args := make([]*c.Char, 3)
+	args[0] = c.Str("-x")
+	args[1] = c.Str("c++")
+	args[2] = c.Str("-std=c++11")
+
+	sourceFile := *c.Advance(c.Argv, 1)
+	index := clang.CreateIndex(0, 0)
+	unit := index.ParseTranslationUnit(
+		sourceFile,
+		unsafe.SliceData(args), 3,
+		nil, 0,
+		clang.DetailedPreprocessingRecord,
+	)
+	defer index.Dispose()
+	defer unit.Dispose()
+
+	if unit == nil {
+		println("Unable to parse translation unit. Quitting.")
+		c.Exit(1)
+	}
+
+	cursor := unit.Cursor()
+
+	Data := &Data{
+		Depth: 0,
+		Unit:  unit,
+	}
+	printAST(cursor, Data)
+}

compiler/chore/_xtool/pydump/pydump.go

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/cjson"
+	"github.com/goplus/llgo/py"
+	"github.com/goplus/llgo/py/inspect"
+)
+
+func main() {
+	if c.Argc < 2 {
+		c.Fprintf(c.Stderr, c.Str("Usage: pydump <pythonLibPath>\n"))
+		return
+	}
+	pyLib := c.Index(c.Argv, 1)
+
+	py.Initialize()
+
+	root := cjson.Object()
+	root.SetItem(c.Str("name"), cjson.String(pyLib))
+
+	items := cjson.Array()
+	mod := py.ImportModule(pyLib)
+	keys := mod.ModuleGetDict().DictKeys()
+	for i, n := 0, keys.ListLen(); i < n; i++ {
+		key := keys.ListItem(i)
+		val := mod.GetAttr(key)
+		doc := val.GetAttrString(c.Str("__doc__"))
+		sym := cjson.Object()
+		sym.SetItem(c.Str("type"), cjson.String(val.Type().TypeName().CStr()))
+		sym.SetItem(c.Str("name"), cjson.String(key.CStr()))
+		if doc != nil {
+			sym.SetItem(c.Str("doc"), cjson.String(doc.CStr()))
+		}
+		if val.Callable() != 0 {
+			sig := inspect.Signature(val)
+			sym.SetItem(c.Str("sig"), cjson.String(sig.Str().CStr()))
+		}
+		items.AddItem(sym)
+	}
+	root.SetItem(c.Str("items"), items)
+
+	c.Printf(c.Str("%s\n"), root.CStr())
+}

compiler/chore/ardump/ardump.go

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+
+	"github.com/goplus/llgo/xtool/ar"
+)
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Fprintln(os.Stderr, "Usage: ardump xxx.a")
+		return
+	}
+
+	f, err := os.Open(os.Args[1])
+	check(err)
+	defer f.Close()
+
+	r, err := ar.NewReader(f)
+	check(err)
+	for {
+		hdr, err := r.Next()
+		if err != nil {
+			if err != io.EOF {
+				log.Println(err)
+			}
+			break
+		}
+		fmt.Println(hdr.Name)
+	}
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}

compiler/chore/clangpp/clangpp.go

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2022 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/goplus/llgo/xtool/clang/preprocessor"
+)
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "Usage: clangpp source.c\n")
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		usage()
+		return
+	}
+	infile := os.Args[1]
+	outfile := infile + ".i"
+	if err := preprocessor.Do(infile, outfile, nil); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}

compiler/chore/dylibdeps/dylibdeps.go

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"debug/macho"
+	"fmt"
+	"os"
+)
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Fprintln(os.Stderr, "Usage: dylibdeps exefile")
+		return
+	}
+	exe := os.Args[1]
+
+	file, err := macho.Open(exe)
+	check(err)
+
+	defer file.Close()
+	for _, load := range file.Loads {
+		if dylib, ok := load.(*macho.Dylib); ok {
+			fmt.Println(dylib.Name)
+		}
+	}
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}

compiler/chore/gentests/gentests.go

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/goplus/llgo/compiler/internal/llgen"
+	"github.com/goplus/mod"
+)
+
+func main() {
+	dir, _, err := mod.FindGoMod(".")
+	check(err)
+
+	llgenDir(dir + "/cl/_testlibc")
+	llgenDir(dir + "/cl/_testlibgo")
+	llgenDir(dir + "/cl/_testrt")
+	llgenDir(dir + "/cl/_testgo")
+	llgenDir(dir + "/cl/_testpy")
+	llgenDir(dir + "/cl/_testdata")
+}
+
+func llgenDir(dir string) {
+	fis, err := os.ReadDir(dir)
+	check(err)
+	for _, fi := range fis {
+		name := fi.Name()
+		if !fi.IsDir() || strings.HasPrefix(name, "_") {
+			continue
+		}
+		testDir := dir + "/" + name
+		fmt.Fprintln(os.Stderr, "llgen", testDir)
+		check(os.Chdir(testDir))
+		llgen.SmartDoFile(testDir)
+	}
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}

compiler/chore/llgen/llgen.go

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/goplus/llgo/compiler/internal/llgen"
+)
+
+func main() {
+	flag.Parse()
+	if len(flag.Args()) != 1 {
+		fmt.Fprintln(os.Stderr, "Usage: llgen [flags] <pkg>")
+		return
+	}
+	llgen.SmartDoFile(flag.Args()[0])
+}

compiler/chore/llpyg/llpyg.go

@@ -0,0 +1,249 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"go/ast"
+	"go/token"
+	"go/types"
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+
+	"github.com/goplus/gogen"
+	"github.com/goplus/llgo/compiler/chore/llpyg/pysig"
+	"github.com/goplus/llgo/compiler/ssa"
+)
+
+type symbol struct {
+	Name string `json:"name"`
+	Type string `json:"type"`
+	Doc  string `json:"doc"`
+	Sig  string `json:"sig"`
+	URL  string `json:"url"`
+}
+
+type module struct {
+	Name  string    `json:"name"`
+	Items []*symbol `json:"items"`
+}
+
+func pydump(pyLib string) (mod module) {
+	var out bytes.Buffer
+	cmd := exec.Command("pydump", pyLib)
+	cmd.Stdout = &out
+	cmd.Stderr = os.Stderr
+	cmd.Run()
+
+	json.Unmarshal(out.Bytes(), &mod)
+	return
+}
+
+func pysigfetch(pyLib string, names []string) (mod module) {
+	var out bytes.Buffer
+	cmd := exec.Command("pysigfetch", pyLib, "-")
+	cmd.Stdin = strings.NewReader(strings.Join(names, " "))
+	cmd.Stdout = &out
+	cmd.Stderr = os.Stderr
+	cmd.Run()
+
+	json.Unmarshal(out.Bytes(), &mod)
+	return
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Fprintln(os.Stderr, "Usage: llpyg <pythonLibPath>")
+		return
+	}
+	pyLib := os.Args[1]
+
+	mod := pydump(pyLib)
+	if mod.Name != pyLib {
+		log.Printf("import module %s failed\n", pyLib)
+		os.Exit(1)
+	}
+	pkg := gogen.NewPackage("", pkgName(pyLib), nil)
+	pkg.Import("unsafe").MarkForceUsed(pkg)       // import _ "unsafe"
+	py := pkg.Import("github.com/goplus/llgo/py") // import "github.com/goplus/llgo/py"
+
+	f := func(cb *gogen.CodeBuilder) int {
+		cb.Val("py." + mod.Name)
+		return 1
+	}
+	defs := pkg.NewConstDefs(pkg.Types.Scope())
+	defs.New(f, 0, 0, nil, "LLGoPackage")
+
+	obj := py.Ref("Object").(*types.TypeName).Type().(*types.Named)
+	objPtr := types.NewPointer(obj)
+	ret := types.NewTuple(pkg.NewParam(0, "", objPtr))
+
+	ctx := &context{pkg, obj, objPtr, ret, nil, py}
+	ctx.genMod(pkg, &mod)
+	skips := ctx.skips
+	if n := len(skips); n > 0 {
+		log.Printf("==> There are %d signatures not found, fetch from doc site\n", n)
+		mod = pysigfetch(pyLib, skips)
+		ctx.skips = skips[:0]
+		ctx.genMod(pkg, &mod)
+		if len(mod.Items) > 0 {
+			skips = ctx.skips
+		}
+		if n := len(skips); n > 0 {
+			log.Printf("==> Skip %d symbols:\n%v\n", n, skips)
+		}
+	}
+
+	pkg.WriteTo(os.Stdout)
+}
+
+func pkgName(pyLib string) string {
+	if pos := strings.LastIndexByte(pyLib, '.'); pos >= 0 {
+		return pyLib[pos+1:]
+	}
+	return pyLib
+}
+
+type context struct {
+	pkg    *gogen.Package
+	obj    *types.Named
+	objPtr *types.Pointer
+	ret    *types.Tuple
+	skips  []string
+	py     gogen.PkgRef
+}
+
+func (ctx *context) genMod(pkg *gogen.Package, mod *module) {
+	for _, sym := range mod.Items {
+		switch sym.Type {
+		case "builtin_function_or_method", "function", "method", "ufunc", "method-wrapper":
+			ctx.genFunc(pkg, sym)
+		case "str", "float", "bool", "type", "dict", "tuple", "list", "object", "module",
+			"int", "set", "frozenset", "flags", "bool_", "pybind11_type", "layout",
+			"memory_format", "qscheme", "dtype", "tensortype", "ellipsis": // skip
+		case "": // pysigfetch: page not found
+			ctx.skips = append(ctx.skips, sym.Name)
+		default:
+			t := sym.Type
+			if len(t) > 0 && (t[0] >= 'a' && t[0] <= 'z') && !strings.HasSuffix(t, "_info") {
+				log.Panicln("unsupport type:", sym.Type)
+			}
+		}
+	}
+}
+
+func (ctx *context) genFunc(pkg *gogen.Package, sym *symbol) {
+	name, symSig := sym.Name, sym.Sig
+	if len(name) == 0 || name[0] == '_' {
+		return
+	}
+	if symSig == "<NULL>" {
+		ctx.skips = append(ctx.skips, name)
+		return
+	}
+	params, variadic := ctx.genParams(pkg, symSig)
+	name = genName(name, -1)
+	sig := types.NewSignatureType(nil, nil, nil, params, ctx.ret, variadic)
+	fn := pkg.NewFuncDecl(token.NoPos, name, sig)
+	list := ctx.genDoc(sym.Doc)
+	if sym.URL != "" {
+		if len(list) > 0 {
+			list = append(list, emptyCommentLine)
+		}
+		list = append(list, genSee(sym.URL))
+	}
+	if len(list) > 0 {
+		list = append(list, emptyCommentLine)
+	}
+	list = append(list, ctx.genLinkname(name, sym))
+	fn.SetComments(pkg, &ast.CommentGroup{List: list})
+	// fn.BodyStart(pkg).End()
+}
+
+func (ctx *context) genParams(pkg *gogen.Package, sig string) (*types.Tuple, bool) {
+	args := pysig.Parse(sig)
+	if len(args) == 0 {
+		return nil, false
+	}
+	n := len(args)
+	objPtr := ctx.objPtr
+	list := make([]*types.Var, 0, n)
+	for i := 0; i < n; i++ {
+		name := args[i].Name
+		if name == "/" {
+			continue
+		}
+		if name == "*" || name == "\\*" {
+			break
+		}
+		if strings.HasPrefix(name, "*") {
+			if name[1] != '*' {
+				list = append(list, ssa.VArg())
+				return types.NewTuple(list...), true
+			}
+			return types.NewTuple(list...), false
+		}
+		list = append(list, pkg.NewParam(0, genName(name, 0), objPtr))
+	}
+	return types.NewTuple(list...), false
+}
+
+func genName(name string, idxDontTitle int) string {
+	parts := strings.Split(name, "_")
+	for i, part := range parts {
+		if i != idxDontTitle && part != "" {
+			if c := part[0]; c >= 'a' && c <= 'z' {
+				part = string(c+'A'-'a') + part[1:]
+			}
+			parts[i] = part
+		}
+	}
+	name = strings.Join(parts, "")
+	switch name {
+	case "default", "func", "var", "range", "":
+		name += "_"
+	}
+	return name
+}
+
+func (ctx *context) genLinkname(name string, sym *symbol) *ast.Comment {
+	return &ast.Comment{Text: "//go:linkname " + name + " py." + sym.Name}
+}
+
+func (ctx *context) genDoc(doc string) []*ast.Comment {
+	if doc == "" {
+		return make([]*ast.Comment, 0, 4)
+	}
+	lines := strings.Split(doc, "\n")
+	list := make([]*ast.Comment, len(lines), len(lines)+4)
+	for i, line := range lines {
+		list[i] = &ast.Comment{Text: "// " + line}
+	}
+	return list
+}
+
+func genSee(url string) *ast.Comment {
+	return &ast.Comment{Text: "// See " + url}
+}
+
+var (
+	emptyCommentLine = &ast.Comment{Text: "//"}
+)

compiler/chore/llpyg/pysig/parse.go

@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package pysig
+
+import (
+	"strings"
+)
+
+type Arg struct {
+	Name   string
+	Type   string
+	DefVal string
+}
+
+// Parse parses a Python function signature.
+func Parse(sig string) (args []*Arg) {
+	sig = strings.TrimPrefix(sig, "(")
+	for {
+		pos := strings.IndexAny(sig, ",:=)")
+		if pos <= 0 {
+			return
+		}
+		arg := &Arg{Name: strings.TrimSpace(sig[:pos])}
+		args = append(args, arg)
+		c := sig[pos]
+		sig = sig[pos+1:]
+		switch c {
+		case ',':
+			continue
+		case ':':
+			arg.Type, sig = parseType(sig)
+			if strings.HasPrefix(sig, "=") {
+				arg.DefVal, sig = parseDefVal(sig[1:])
+			}
+		case '=':
+			arg.DefVal, sig = parseDefVal(sig)
+		case ')':
+			return
+		}
+		sig = strings.TrimPrefix(sig, ",")
+	}
+}
+
+const (
+	allSpecials = "([<'\""
+)
+
+var pairStops = map[byte]string{
+	'(':  ")" + allSpecials,
+	'[':  "]" + allSpecials,
+	'<':  ">" + allSpecials,
+	'\'': "'" + allSpecials,
+	'"':  "\"",
+}
+
+func parseText(sig string, stops string) (left string) {
+	for {
+		pos := strings.IndexAny(sig, stops)
+		if pos < 0 {
+			return sig
+		}
+		if c := sig[pos]; c != stops[0] {
+			if pstop, ok := pairStops[c]; ok {
+				sig = strings.TrimPrefix(parseText(sig[pos+1:], pstop), pstop[:1])
+				continue
+			}
+		}
+		return sig[pos:]
+	}
+}
+
+// stops: "=,)"
+func parseType(sig string) (string, string) {
+	left := parseText(sig, "=,)"+allSpecials)
+	return resultOf(sig, left), left
+}
+
+// stops: ",)"
+func parseDefVal(sig string) (string, string) {
+	left := parseText(sig, ",)"+allSpecials)
+	return resultOf(sig, left), left
+}
+
+func resultOf(sig, left string) string {
+	return strings.TrimSpace(sig[:len(sig)-len(left)])
+}

compiler/chore/llpyg/pysig/parse_test.go

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package pysig
+
+import "testing"
+
+func TestParse(t *testing.T) {
+	type testCase struct {
+		sig  string
+		args []*Arg
+	}
+	cases := []testCase{
+		{"(start=None, *, unit: 'str | None' = None) -> 'TimedeltaIndex'", []*Arg{
+			{Name: "start", DefVal: "None"},
+			{Name: "*"},
+			{Name: "unit", Type: "'str | None'", DefVal: "None"},
+		}},
+		{"()", nil},
+		{"(a =", []*Arg{{Name: "a"}}},
+		{"(a) -> int", []*Arg{{Name: "a"}}},
+		{"(a: int)", []*Arg{{Name: "a", Type: "int"}}},
+		{"(a: int = 1, b: float)", []*Arg{{Name: "a", Type: "int", DefVal: "1"}, {Name: "b", Type: "float"}}},
+		{"(a = <1>, b = 2.0)", []*Arg{{Name: "a", DefVal: "<1>"}, {Name: "b", DefVal: "2.0"}}},
+		{"(a: 'Suffixes' = ('_x', '_y'))", []*Arg{{Name: "a", Type: "'Suffixes'", DefVal: "('_x', '_y')"}}},
+	}
+	for _, c := range cases {
+		args := Parse(c.sig)
+		if len(args) != len(c.args) {
+			t.Fatalf("%s: len(args) = %v, want %v", c.sig, len(args), len(c.args))
+		}
+		for i, arg := range args {
+			want := c.args[i]
+			if arg.Name != want.Name || arg.Type != want.Type || arg.DefVal != want.DefVal {
+				t.Fatalf("%s: args[%v] = %v, want %v", c.sig, i, arg, want)
+			}
+		}
+	}
+}

compiler/chore/llvmtargets/llvm_targets.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/goplus/llvm"
+)
+
+func main() {
+	llvm.InitializeAllTargetInfos()
+	llvm.InitializeAllTargets()
+	llvm.InitializeAllTargetMCs()
+	llvm.InitializeNativeTarget()
+	fmt.Println("targets:")
+	for it := llvm.FirstTarget(); it.C != nil; it = it.NextTarget() {
+		fmt.Printf("- %s: %s\n", it.Name(), it.Description())
+	}
+}

compiler/chore/nmdump/nmdump.go

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/goplus/llgo/xtool/env/llvm"
+	nmtool "github.com/goplus/llgo/xtool/nm"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Fprintln(os.Stderr, "Usage: nmdump [flags] libfile")
+		return
+	}
+
+	nm := llvm.New("").Nm()
+
+	var flags []string
+	libfile := os.Args[len(os.Args)-1]
+	if len(os.Args) > 2 {
+		flags = os.Args[1 : len(os.Args)-1]
+	}
+
+	items, err := nm.List(libfile, flags...)
+
+	for _, item := range items {
+		if item.File != "" {
+			fmt.Printf("\n%s:\n", item.File)
+		}
+		for _, sym := range item.Symbols {
+			var versionInfo string
+			switch sym.VersionType {
+			case nmtool.VersionSpecific:
+				versionInfo = fmt.Sprintf("@%s", sym.Version)
+			case nmtool.VersionDefault:
+				versionInfo = fmt.Sprintf("@@%s", sym.Version)
+			}
+			if sym.FAddr {
+				fmt.Printf("%016x %c %s%s\n", sym.Addr, sym.Type, sym.Name, versionInfo)
+			} else {
+				fmt.Printf("%16s %c %s%s\n", "", sym.Type, sym.Name, versionInfo)
+			}
+		}
+	}
+	if err != nil {
+		log.Println(err)
+	}
+}

compiler/chore/nmindex/nmindex.go

@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/goplus/llgo/xtool/env/llvm"
+	"github.com/goplus/llgo/xtool/nm/nmindex"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Fprint(os.Stderr, `Usage:
+	nmindex <command> [arguments]
+
+The commands are:
+
+	mk		Create index file
+	q		Query a symbol
+
+`)
+		return
+	}
+
+	cmd := os.Args[1]
+	switch cmd {
+	case "mk":
+		makeIndex()
+	case "q":
+		if len(os.Args) < 3 {
+			fmt.Fprint(os.Stderr, "Usage: nmindex q <symbol>\n")
+			return
+		}
+		query(os.Args[2])
+	default:
+		fmt.Fprintf(os.Stderr, "unknown command: %s\n", cmd)
+	}
+}
+
+func makeIndex() {
+	env := llvm.New("")
+	idxDir := indexDir()
+	os.MkdirAll(idxDir, 0755)
+
+	b := nmindex.NewIndexBuilder(env.Nm())
+	libDirs := []string{
+		usrLib(false),
+		usrLib(true),
+		stdLib("LLGO_STDROOT"),
+		stdLib("LLGO_USRROOT"),
+		pythonLib(),
+	}
+	err := b.Index(libDirs, idxDir, func(path string) {
+		fmt.Println("==>", path)
+	})
+	check(err)
+}
+
+func query(q string) {
+	if len(q) > 0 {
+		if c := q[0]; c != '*' && c != '_' {
+			q = "_" + q
+		}
+	}
+	files, err := nmindex.Query(indexDir(), q)
+	check(err)
+	for _, f := range files {
+		fmt.Printf("%s:\n", f.ArFile)
+		for _, item := range f.Items {
+			fmt.Printf("  %c %s %s\n", item.Type, item.Symbol, item.ObjFile)
+		}
+	}
+}
+
+func indexDir() string {
+	home, err := os.UserHomeDir()
+	check(err)
+	return home + "/.llgo/nmindex"
+}
+
+func stdLib(where string) string {
+	dir := os.Getenv(where)
+	if dir != "" {
+		dir += "/lib"
+	}
+	return dir
+}
+
+func usrLib(local bool) string {
+	if local {
+		return "/usr/local/lib"
+	}
+	return "/usr/lib"
+}
+
+func pythonLib() string {
+	return os.Getenv("LLGO_PYTHON_ROOT")
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}

compiler/chore/ssadump/ssadump.go

@@ -0,0 +1,201 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// ssadump: a tool for displaying and interpreting the SSA form of Go programs.
+package main // import "golang.org/x/tools/cmd/ssadump"
+
+import (
+	"flag"
+	"fmt"
+	"go/build"
+	"go/types"
+	"os"
+	"runtime"
+	"runtime/pprof"
+
+	"golang.org/x/tools/go/buildutil"
+	"golang.org/x/tools/go/packages"
+	"golang.org/x/tools/go/ssa"
+	"golang.org/x/tools/go/ssa/interp"
+	"golang.org/x/tools/go/ssa/ssautil"
+)
+
+const (
+	loadFiles   = packages.NeedName | packages.NeedFiles | packages.NeedCompiledGoFiles
+	loadImports = loadFiles | packages.NeedImports
+	loadTypes   = loadImports | packages.NeedTypes | packages.NeedTypesSizes
+	loadSyntax  = loadTypes | packages.NeedSyntax | packages.NeedTypesInfo
+)
+
+// flags
+var (
+	mode = ssa.BuilderMode(0)
+
+	testFlag = flag.Bool("test", false, "include implicit test packages and executables")
+
+	runFlag = flag.Bool("run", false, "interpret the SSA program")
+
+	interpFlag = flag.String("interp", "", `Options controlling the SSA test interpreter.
+The value is a sequence of zero or more more of these letters:
+R	disable [R]ecover() from panic; show interpreter crash instead.
+T	[T]race execution of the program.  Best for single-threaded programs!
+`)
+
+	cpuprofile = flag.String("cpuprofile", "", "write cpu profile to file")
+
+	args stringListValue
+)
+
+func init() {
+	flag.Var(&mode, "build", ssa.BuilderModeDoc)
+	flag.Var((*buildutil.TagsFlag)(&build.Default.BuildTags), "tags", buildutil.TagsFlagDoc)
+	flag.Var(&args, "arg", "add argument to interpreted program")
+}
+
+const usage = `SSA builder and interpreter.
+Usage: ssadump [-build=[DBCSNFLG]] [-test] [-run] [-interp=[TR]] [-arg=...] package...
+Use -help flag to display options.
+
+Examples:
+% ssadump -build=F hello.go              # dump SSA form of a single package
+% ssadump -build=F -test fmt             # dump SSA form of a package and its tests
+% ssadump -run -interp=T hello.go        # interpret a program, with tracing
+
+The -run flag causes ssadump to build the code in a runnable form and run the first
+package named main.
+
+Interpretation of the standard "testing" package is no longer supported.
+`
+
+func main() {
+	if err := doMain(); err != nil {
+		fmt.Fprintf(os.Stderr, "ssadump: %s\n", err)
+		os.Exit(1)
+	}
+}
+
+func doMain() error {
+	flag.Parse()
+	if len(flag.Args()) == 0 {
+		fmt.Fprint(os.Stderr, usage)
+		os.Exit(1)
+	}
+
+	cfg := &packages.Config{
+		Mode:  loadSyntax,
+		Tests: *testFlag,
+	}
+
+	// Choose types.Sizes from conf.Build.
+	// TODO(adonovan): remove this when go/packages provides a better way.
+	var wordSize int64 = 8
+	switch build.Default.GOARCH {
+	case "386", "arm":
+		wordSize = 4
+	}
+	sizes := &types.StdSizes{
+		MaxAlign: 8,
+		WordSize: wordSize,
+	}
+
+	var interpMode interp.Mode
+	for _, c := range *interpFlag {
+		switch c {
+		case 'T':
+			interpMode |= interp.EnableTracing
+		case 'R':
+			interpMode |= interp.DisableRecover
+		default:
+			return fmt.Errorf("unknown -interp option: '%c'", c)
+		}
+	}
+
+	// Profiling support.
+	if *cpuprofile != "" {
+		f, err := os.Create(*cpuprofile)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			os.Exit(1)
+		}
+		pprof.StartCPUProfile(f)
+		defer pprof.StopCPUProfile()
+	}
+
+	// Load, parse and type-check the initial packages,
+	// and, if -run, their dependencies.
+	if *runFlag {
+		cfg.Mode = loadSyntax | packages.NeedDeps
+	}
+	initial, err := packages.Load(cfg, flag.Args()...)
+	if err != nil {
+		return err
+	}
+	if len(initial) == 0 {
+		return fmt.Errorf("no packages")
+	}
+	if packages.PrintErrors(initial) > 0 {
+		return fmt.Errorf("packages contain errors")
+	}
+
+	// Turn on instantiating generics during build if the program will be run.
+	if *runFlag {
+		mode |= ssa.InstantiateGenerics
+	}
+
+	// Create SSA-form program representation.
+	prog, pkgs := ssautil.AllPackages(initial, mode)
+
+	for i, p := range pkgs {
+		if p == nil {
+			return fmt.Errorf("cannot build SSA for package %s", initial[i])
+		}
+	}
+
+	if !*runFlag {
+		// Build and display only the initial packages
+		// (and synthetic wrappers).
+		for _, p := range pkgs {
+			p.Build()
+		}
+
+	} else {
+		// Run the interpreter.
+		// Build SSA for all packages.
+		prog.Build()
+
+		// Earlier versions of the interpreter needed the runtime
+		// package; however, interp cannot handle unsafe constructs
+		// used during runtime's package initialization at the moment.
+		// The key construct blocking support is:
+		//    *((*T)(unsafe.Pointer(p)))
+		// Unfortunately, this means only trivial programs can be
+		// interpreted by ssadump.
+		if prog.ImportedPackage("runtime") != nil {
+			return fmt.Errorf("-run: program depends on runtime package (interpreter can run only trivial programs)")
+		}
+
+		if runtime.GOARCH != build.Default.GOARCH {
+			return fmt.Errorf("cross-interpretation is not supported (target has GOARCH %s, interpreter has %s)",
+				build.Default.GOARCH, runtime.GOARCH)
+		}
+
+		// Run first main package.
+		for _, main := range ssautil.MainPackages(pkgs) {
+			fmt.Fprintf(os.Stderr, "Running: %s\n", main.Pkg.Path())
+			os.Exit(interp.Interpret(main, interpMode, sizes, main.Pkg.Path(), args))
+		}
+		return fmt.Errorf("no main package")
+	}
+	return nil
+}
+
+// stringListValue is a flag.Value that accumulates strings.
+// e.g. --flag=one --flag=two would produce []string{"one", "two"}.
+type stringListValue []string
+
+func (ss *stringListValue) Get() interface{} { return []string(*ss) }
+
+func (ss *stringListValue) String() string { return fmt.Sprintf("%q", *ss) }
+
+func (ss *stringListValue) Set(s string) error { *ss = append(*ss, s); return nil }

compiler/cl/_testdata/apkg/in.go

@@ -0,0 +1,8 @@
+package apkg
+
+func Max(a, b float64) float64 {
+	if a > b {
+		return a
+	}
+	return b
+}

compiler/cl/_testdata/apkg/out.ll

@@ -0,0 +1,29 @@
+; ModuleID = 'github.com/goplus/llgo/cl/_testdata/apkg'
+source_filename = "github.com/goplus/llgo/cl/_testdata/apkg"
+
+@"github.com/goplus/llgo/cl/_testdata/apkg.init$guard" = global i1 false, align 1
+
+define double @"github.com/goplus/llgo/cl/_testdata/apkg.Max"(double %0, double %1) {
+_llgo_0:
+  %2 = fcmp ogt double %0, %1
+  br i1 %2, label %_llgo_1, label %_llgo_2
+
+_llgo_1:                                          ; preds = %_llgo_0
+  ret double %0
+
+_llgo_2:                                          ; preds = %_llgo_0
+  ret double %1
+}
+
+define void @"github.com/goplus/llgo/cl/_testdata/apkg.init"() {
+_llgo_0:
+  %0 = load i1, ptr @"github.com/goplus/llgo/cl/_testdata/apkg.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"github.com/goplus/llgo/cl/_testdata/apkg.init$guard", align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}

compiler/cl/_testdata/debug/flags.txt

@@ -0,0 +1 @@
+-dbg

compiler/cl/_testdata/debug/in.go

@@ -0,0 +1,569 @@
+package main
+
+import "errors"
+
+type Base struct {
+	name string
+}
+
+type E struct {
+	// Base
+	i int
+}
+type StructWithAllTypeFields struct {
+	i8    int8
+	i16   int16
+	i32   int32
+	i64   int64
+	i     int
+	u8    uint8
+	u16   uint16
+	u32   uint32
+	u64   uint64
+	u     uint
+	f32   float32
+	f64   float64
+	b     bool
+	c64   complex64
+	c128  complex128
+	slice []int
+	arr   [3]int
+	arr2  [3]E
+	s     string
+	e     E
+	pf    *StructWithAllTypeFields // resursive
+	pi    *int
+	intr  Interface
+	m     map[string]uint64
+	c     chan int
+	err   error
+	fn    func(string) (int, error)
+	pad1  int
+	pad2  int
+}
+
+type Interface interface {
+	Foo(a []int, b string) int
+}
+
+type Struct struct{}
+
+func (s *Struct) Foo(a []int, b string) int {
+	return 1
+}
+
+func FuncWithAllTypeStructParam(s StructWithAllTypeFields) {
+	println(&s)
+	// Expected:
+	//   all variables: s
+	//   s.i8: '\x01'
+	//   s.i16: 2
+	//   s.i32: 3
+	//   s.i64: 4
+	//   s.i: 5
+	//   s.u8: '\x06'
+	//   s.u16: 7
+	//   s.u32: 8
+	//   s.u64: 9
+	//   s.u: 10
+	//   s.f32: 11
+	//   s.f64: 12
+	//   s.b: true
+	//   s.c64: complex64{real = 13, imag = 14}
+	//   s.c128: complex128{real = 15, imag = 16}
+	//   s.slice: []int{21, 22, 23}
+	//   s.arr: [3]int{24, 25, 26}
+	//   s.arr2: [3]github.com/goplus/llgo/compiler/cl/_testdata/debug.E{{i = 27}, {i = 28}, {i = 29}}
+	//   s.s: "hello"
+	//   s.e: github.com/goplus/llgo/compiler/cl/_testdata/debug.E{i = 30}
+	//   s.pad1: 100
+	//   s.pad2: 200
+	s.i8 = '\b'
+	// Expected:
+	//   s.i8: '\b'
+	//   s.i16: 2
+	println(len(s.s), s.i8)
+}
+
+// Params is a function with all types of parameters.
+func FuncWithAllTypeParams(
+	i8 int8,
+	i16 int16,
+	i32 int32,
+	i64 int64,
+	i int,
+	u8 uint8,
+	u16 uint16,
+	u32 uint32,
+	u64 uint64,
+	u uint,
+	f32 float32,
+	f64 float64,
+	b bool,
+	c64 complex64,
+	c128 complex128,
+	slice []int,
+	arr [3]int,
+	arr2 [3]E,
+	s string,
+	e E,
+	f StructWithAllTypeFields,
+	pf *StructWithAllTypeFields,
+	pi *int,
+	intr Interface,
+	m map[string]uint64,
+	c chan int,
+	err error,
+	fn func(string) (int, error),
+) (int, error) {
+	// Expected:
+	//   all variables: i8 i16 i32 i64 i u8 u16 u32 u64 u f32 f64 b c64 c128 slice arr arr2 s e f pf pi intr m c err fn
+	//   i32: 3
+	//   i64: 4
+	//   i: 5
+	//   u32: 8
+	//   u64: 9
+	//   u: 10
+	//   f32: 11
+	//   f64: 12
+	//   slice: []int{21, 22, 23}
+	//   arr: [3]int{24, 25, 26}
+	//   arr2: [3]github.com/goplus/llgo/compiler/cl/_testdata/debug.E{{i = 27}, {i = 28}, {i = 29}}
+	//   slice[0]: 21
+	//   slice[1]: 22
+	//   slice[2]: 23
+	//   arr[0]: 24
+	//   arr[1]: 25
+	//   arr[2]: 26
+	//   arr2[0].i: 27
+	//   arr2[1].i: 28
+	//   arr2[2].i: 29
+	//   e: github.com/goplus/llgo/compiler/cl/_testdata/debug.E{i = 30}
+
+	// Expected(skip):
+	//   i8: '\b'
+	//   i16: 2
+	//   u8: '\x06'
+	//   u16: 7
+	//   b: true
+	println(
+		i8, i16, i32, i64, i, u8, u16, u32, u64, u,
+		f32, f64, b,
+		c64, c128,
+		slice, arr[0:],
+		s,
+		&e,
+		&f, pf, pi, intr, m,
+		c,
+		err,
+		fn,
+	)
+	i8 = 9
+	i16 = 10
+	i32 = 11
+	i64 = 12
+	i = 13
+	u8 = 14
+	u16 = 15
+	u32 = 16
+	u64 = 17
+	u = 18
+	f32 = 19
+	f64 = 20
+	b = false
+	c64 = 21 + 22i
+	c128 = 23 + 24i
+	slice = []int{31, 32, 33}
+	arr = [3]int{34, 35, 36}
+	arr2 = [3]E{{i: 37}, {i: 38}, {i: 39}}
+	s = "world"
+	e = E{i: 40}
+
+	println(i8, i16, i32, i64, i, u8, u16, u32, u64, u,
+		f32, f64, b,
+		c64, c128,
+		slice, arr[0:], &arr2,
+		s,
+		&e,
+		&f, pf, pi, intr, m,
+		c,
+		err,
+		fn,
+	)
+	// Expected:
+	//   i8: '\t'
+	//   i16: 10
+	//   i32: 11
+	//   i64: 12
+	//   i: 13
+	//   u8: '\x0e'
+	//   u16: 15
+	//   u32: 16
+	//   u64: 17
+	//   u: 18
+	//   f32: 19
+	//   f64: 20
+	//   b: false
+	//   c64: complex64{real = 21, imag = 22}
+	//   c128: complex128{real = 23, imag = 24}
+	//   slice: []int{31, 32, 33}
+	//   arr2: [3]github.com/goplus/llgo/compiler/cl/_testdata/debug.E{{i = 37}, {i = 38}, {i = 39}}
+	//   s: "world"
+	//   e: github.com/goplus/llgo/compiler/cl/_testdata/debug.E{i = 40}
+
+	// Expected(skip):
+	//   arr: [3]int{34, 35, 36}
+	return 1, errors.New("some error")
+}
+
+type TinyStruct struct {
+	I int
+}
+
+type SmallStruct struct {
+	I int
+	J int
+}
+
+type MidStruct struct {
+	I int
+	J int
+	K int
+}
+
+type BigStruct struct {
+	I int
+	J int
+	K int
+	L int
+	M int
+	N int
+	O int
+	P int
+	Q int
+	R int
+}
+
+func FuncStructParams(t TinyStruct, s SmallStruct, m MidStruct, b BigStruct) {
+	// println(&t, &s, &m, &b)
+	// Expected:
+	//   all variables: t s m b
+	//   t.I: 1
+	//   s.I: 2
+	//   s.J: 3
+	//   m.I: 4
+	//   m.J: 5
+	//   m.K: 6
+	//   b.I: 7
+	//   b.J: 8
+	//   b.K: 9
+	//   b.L: 10
+	//   b.M: 11
+	//   b.N: 12
+	//   b.O: 13
+	//   b.P: 14
+	//   b.Q: 15
+	//   b.R: 16
+	println(t.I, s.I, s.J, m.I, m.J, m.K, b.I, b.J, b.K, b.L, b.M, b.N, b.O, b.P, b.Q, b.R)
+	t.I = 10
+	s.I = 20
+	s.J = 21
+	m.I = 40
+	m.J = 41
+	m.K = 42
+	b.I = 70
+	b.J = 71
+	b.K = 72
+	b.L = 73
+	b.M = 74
+	b.N = 75
+	b.O = 76
+	b.P = 77
+	b.Q = 78
+	b.R = 79
+	// Expected:
+	//   all variables: t s m b
+	//   t.I: 10
+	//   s.I: 20
+	//   s.J: 21
+	//   m.I: 40
+	//   m.J: 41
+	//   m.K: 42
+	//   b.I: 70
+	//   b.J: 71
+	//   b.K: 72
+	//   b.L: 73
+	//   b.M: 74
+	//   b.N: 75
+	//   b.O: 76
+	//   b.P: 77
+	//   b.Q: 78
+	//   b.R: 79
+	println("done")
+}
+
+func FuncStructPtrParams(t *TinyStruct, s *SmallStruct, m *MidStruct, b *BigStruct) {
+	// Expected:
+	//   all variables: t s m b
+	//   t.I: 1
+	//   s.I: 2
+	//   s.J: 3
+	//   m.I: 4
+	//   m.J: 5
+	//   m.K: 6
+	//   b.I: 7
+	//   b.J: 8
+	//   b.K: 9
+	//   b.L: 10
+	//   b.M: 11
+	//   b.N: 12
+	//   b.O: 13
+	//   b.P: 14
+	//   b.Q: 15
+	//   b.R: 16
+	println(t, s, m, b)
+	t.I = 10
+	s.I = 20
+	s.J = 21
+	m.I = 40
+	m.J = 41
+	m.K = 42
+	b.I = 70
+	b.J = 71
+	b.K = 72
+	b.L = 73
+	b.M = 74
+	b.N = 75
+	b.O = 76
+	b.P = 77
+	b.Q = 78
+	b.R = 79
+	// Expected:
+	//   all variables: t s m b
+	//   t.I: 10
+	//   s.I: 20
+	//   s.J: 21
+	//   m.I: 40
+	//   m.J: 41
+	//   m.K: 42
+	//   b.I: 70
+	//   b.J: 71
+	//   b.K: 72
+	//   b.L: 73
+	//   b.M: 74
+	//   b.N: 75
+	//   b.O: 76
+	//   b.P: 77
+	//   b.Q: 78
+	//   b.R: 79
+	println(t.I, s.I, s.J, m.I, m.J, m.K, b.I, b.J, b.K, b.L, b.M, b.N, b.O, b.P, b.Q, b.R)
+	println("done")
+}
+
+func ScopeIf(branch int) {
+	a := 1
+	// Expected:
+	//   all variables: a branch
+	//   a: 1
+	if branch == 1 {
+		b := 2
+		c := 3
+		// Expected:
+		//   all variables: a b c branch
+		//   a: 1
+		//   b: 2
+		//   c: 3
+		//   branch: 1
+		println(a, b, c)
+	} else {
+		c := 3
+		d := 4
+		// Expected:
+		//   all variables: a c d branch
+		//   a: 1
+		//   c: 3
+		//   d: 4
+		//   branch: 0
+		println(a, c, d)
+	}
+	// Expected:
+	//   all variables: a branch
+	//   a: 1
+	println("a:", a)
+}
+
+func ScopeFor() {
+	a := 1
+	for i := 0; i < 10; i++ {
+		switch i {
+		case 0:
+			println("i is 0")
+			// Expected:
+			//   all variables: i a
+			//   i: 0
+			//   a: 1
+			println("i:", i)
+		case 1:
+			println("i is 1")
+			// Expected:
+			//   all variables: i a
+			//   i: 1
+			//   a: 1
+			println("i:", i)
+		default:
+			println("i is", i)
+		}
+	}
+	println("a:", a)
+}
+
+func ScopeSwitch(i int) {
+	a := 0
+	switch i {
+	case 1:
+		b := 1
+		println("i is 1")
+		// Expected:
+		//   all variables: i a b
+		//   i: 1
+		//   a: 0
+		//   b: 1
+		println("i:", i, "a:", a, "b:", b)
+	case 2:
+		c := 2
+		println("i is 2")
+		// Expected:
+		//   all variables: i a c
+		//   i: 2
+		//   a: 0
+		//   c: 2
+		println("i:", i, "a:", a, "c:", c)
+	default:
+		d := 3
+		println("i is", i)
+		// Expected:
+		//   all variables: i a d
+		//   i: 3
+		//   a: 0
+		//   d: 3
+		println("i:", i, "a:", a, "d:", d)
+	}
+	// Expected:
+	//   all variables: a i
+	//   a: 0
+	println("a:", a)
+}
+
+func main() {
+	FuncStructParams(TinyStruct{I: 1}, SmallStruct{I: 2, J: 3}, MidStruct{I: 4, J: 5, K: 6}, BigStruct{I: 7, J: 8, K: 9, L: 10, M: 11, N: 12, O: 13, P: 14, Q: 15, R: 16})
+	FuncStructPtrParams(&TinyStruct{I: 1}, &SmallStruct{I: 2, J: 3}, &MidStruct{I: 4, J: 5, K: 6}, &BigStruct{I: 7, J: 8, K: 9, L: 10, M: 11, N: 12, O: 13, P: 14, Q: 15, R: 16})
+	i := 100
+	s := StructWithAllTypeFields{
+		i8:    1,
+		i16:   2,
+		i32:   3,
+		i64:   4,
+		i:     5,
+		u8:    6,
+		u16:   7,
+		u32:   8,
+		u64:   9,
+		u:     10,
+		f32:   11,
+		f64:   12,
+		b:     true,
+		c64:   13 + 14i,
+		c128:  15 + 16i,
+		slice: []int{21, 22, 23},
+		arr:   [3]int{24, 25, 26},
+		arr2:  [3]E{{i: 27}, {i: 28}, {i: 29}},
+		s:     "hello",
+		e:     E{i: 30},
+		pf:    &StructWithAllTypeFields{i16: 100},
+		pi:    &i,
+		intr:  &Struct{},
+		m:     map[string]uint64{"a": 31, "b": 32},
+		c:     make(chan int),
+		err:   errors.New("Test error"),
+		fn: func(s string) (int, error) {
+			println("fn:", s)
+			i = 201
+			return 1, errors.New("fn error")
+		},
+		pad1: 100,
+		pad2: 200,
+	}
+	// Expected:
+	//   all variables: s i err
+	//   s.i8: '\x01'
+	//   s.i16: 2
+	//   s.i32: 3
+	//   s.i64: 4
+	//   s.i: 5
+	//   s.u8: '\x06'
+	//   s.u16: 7
+	//   s.u32: 8
+	//   s.u64: 9
+	//   s.u: 10
+	//   s.f32: 11
+	//   s.f64: 12
+	//   s.b: true
+	//   s.c64: complex64{real = 13, imag = 14}
+	//   s.c128: complex128{real = 15, imag = 16}
+	//   s.slice: []int{21, 22, 23}
+	//   s.arr: [3]int{24, 25, 26}
+	//   s.arr2: [3]github.com/goplus/llgo/compiler/cl/_testdata/debug.E{{i = 27}, {i = 28}, {i = 29}}
+	//   s.s: "hello"
+	//   s.e: github.com/goplus/llgo/compiler/cl/_testdata/debug.E{i = 30}
+	//   s.pf.i16: 100
+	//   *(s.pf).i16: 100
+	//   *(s.pi): 100
+	globalStructPtr = &s
+	globalStruct = s
+	println("globalInt:", globalInt)
+	// Expected(skip):
+	//   all variables: globalInt globalStruct globalStructPtr s i err
+	println("s:", &s)
+	FuncWithAllTypeStructParam(s)
+	println("called function with struct")
+	i, err := FuncWithAllTypeParams(
+		s.i8, s.i16, s.i32, s.i64, s.i, s.u8, s.u16, s.u32, s.u64, s.u,
+		s.f32, s.f64, s.b,
+		s.c64, s.c128,
+		s.slice, s.arr, s.arr2,
+		s.s,
+		s.e, s,
+		s.pf, s.pi,
+		s.intr,
+		s.m,
+		s.c,
+		s.err,
+		s.fn,
+	)
+	println(i, err)
+	ScopeIf(1)
+	ScopeIf(0)
+	ScopeFor()
+	ScopeSwitch(1)
+	ScopeSwitch(2)
+	ScopeSwitch(3)
+	println(globalStructPtr)
+	println(&globalStruct)
+	s.i8 = 0x12
+	println(s.i8)
+	// Expected:
+	//   all variables: s i err
+	//   s.i8: '\x12'
+
+	// Expected(skip):
+	//   globalStruct.i8: '\x01'
+	println((*globalStructPtr).i8)
+	println("done")
+	println("")
+	println(&s, &globalStruct, globalStructPtr.i16, globalStructPtr)
+	globalStructPtr = nil
+}
+
+var globalInt int = 301
+var globalStruct StructWithAllTypeFields
+var globalStructPtr *StructWithAllTypeFields

compiler/cl/_testdata/debug/out.ll

@@ -0,0 +1 @@
+;

compiler/cl/_testdata/fncall/in.go

@@ -0,0 +1,12 @@
+package main
+
+func max(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+func main() {
+	_ = max(1, 2)
+}

compiler/cl/_testdata/fncall/out.ll

@@ -0,0 +1,43 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = call i64 @main.max(i64 1, i64 2)
+  ret i32 0
+}
+
+define i64 @main.max(i64 %0, i64 %1) {
+_llgo_0:
+  %2 = icmp sgt i64 %0, %1
+  br i1 %2, label %_llgo_1, label %_llgo_2
+
+_llgo_1:                                          ; preds = %_llgo_0
+  ret i64 %0
+
+_llgo_2:                                          ; preds = %_llgo_0
+  ret i64 %1
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()

compiler/cl/_testdata/importpkg/in.go

@@ -0,0 +1,10 @@
+package main
+
+import "github.com/goplus/llgo/compiler/cl/internal/stdio"
+
+var hello = [...]int8{'H', 'e', 'l', 'l', 'o', '\n', 0}
+
+func main() {
+	_ = stdio.Max(2, 100)
+	stdio.Printf(&hello[0])
+}

compiler/cl/_testdata/importpkg/out.ll

@@ -0,0 +1,47 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@main.hello = global [7 x i8] zeroinitializer, align 1
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  call void @"github.com/goplus/llgo/cl/internal/stdio.init"()
+  store i8 72, ptr @main.hello, align 1
+  store i8 101, ptr getelementptr inbounds (i8, ptr @main.hello, i64 1), align 1
+  store i8 108, ptr getelementptr inbounds (i8, ptr @main.hello, i64 2), align 1
+  store i8 108, ptr getelementptr inbounds (i8, ptr @main.hello, i64 3), align 1
+  store i8 111, ptr getelementptr inbounds (i8, ptr @main.hello, i64 4), align 1
+  store i8 10, ptr getelementptr inbounds (i8, ptr @main.hello, i64 5), align 1
+  store i8 0, ptr getelementptr inbounds (i8, ptr @main.hello, i64 6), align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = call i64 @"github.com/goplus/llgo/cl/internal/stdio.Max"(i64 2, i64 100)
+  call void (ptr, ...) @printf(ptr @main.hello)
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/cl/internal/stdio.init"()
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare i64 @"github.com/goplus/llgo/cl/internal/stdio.Max"(i64, i64)
+
+declare void @printf(ptr, ...)

compiler/cl/_testdata/llgotag/in.go

@@ -0,0 +1,7 @@
+//go:build llgo
+// +build llgo
+
+package llgotag
+
+func Foo() {
+}

compiler/cl/_testdata/llgotag/out.ll

@@ -0,0 +1,22 @@
+; ModuleID = 'github.com/goplus/llgo/cl/_testdata/llgotag'
+source_filename = "github.com/goplus/llgo/cl/_testdata/llgotag"
+
+@"github.com/goplus/llgo/cl/_testdata/llgotag.init$guard" = global i1 false, align 1
+
+define void @"github.com/goplus/llgo/cl/_testdata/llgotag.Foo"() {
+_llgo_0:
+  ret void
+}
+
+define void @"github.com/goplus/llgo/cl/_testdata/llgotag.init"() {
+_llgo_0:
+  %0 = load i1, ptr @"github.com/goplus/llgo/cl/_testdata/llgotag.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"github.com/goplus/llgo/cl/_testdata/llgotag.init$guard", align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}

compiler/cl/_testdata/method/in.go

@@ -0,0 +1,19 @@
+package main
+
+import _ "unsafe"
+
+type T int
+
+func (a T) Add(b T) T {
+	return a + b
+}
+
+//go:linkname printf C.printf
+func printf(format *int8, __llgo_va_list ...any)
+
+var format = [...]int8{'H', 'e', 'l', 'l', 'o', ' ', '%', 'd', '\n', 0}
+
+func main() {
+	a := T(1)
+	printf(&format[0], a.Add(2))
+}

compiler/cl/_testdata/method/out.ll

@@ -0,0 +1,58 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@main.format = global [10 x i8] zeroinitializer, align 1
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+
+define i64 @main.T.Add(i64 %0, i64 %1) {
+_llgo_0:
+  %2 = add i64 %0, %1
+  ret i64 %2
+}
+
+define i64 @"main.(*T).Add"(ptr %0, i64 %1) {
+_llgo_0:
+  %2 = load i64, ptr %0, align 4
+  %3 = call i64 @main.T.Add(i64 %2, i64 %1)
+  ret i64 %3
+}
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  store i8 72, ptr @main.format, align 1
+  store i8 101, ptr getelementptr inbounds (i8, ptr @main.format, i64 1), align 1
+  store i8 108, ptr getelementptr inbounds (i8, ptr @main.format, i64 2), align 1
+  store i8 108, ptr getelementptr inbounds (i8, ptr @main.format, i64 3), align 1
+  store i8 111, ptr getelementptr inbounds (i8, ptr @main.format, i64 4), align 1
+  store i8 32, ptr getelementptr inbounds (i8, ptr @main.format, i64 5), align 1
+  store i8 37, ptr getelementptr inbounds (i8, ptr @main.format, i64 6), align 1
+  store i8 100, ptr getelementptr inbounds (i8, ptr @main.format, i64 7), align 1
+  store i8 10, ptr getelementptr inbounds (i8, ptr @main.format, i64 8), align 1
+  store i8 0, ptr getelementptr inbounds (i8, ptr @main.format, i64 9), align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = call i64 @main.T.Add(i64 1, i64 2)
+  call void (ptr, ...) @printf(ptr @main.format, i64 %2)
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare void @printf(ptr, ...)

compiler/cl/_testdata/print/in.go

@@ -0,0 +1,277 @@
+package main
+
+import (
+	"unsafe"
+
+	"github.com/goplus/llgo/c"
+)
+
+func gwrite(b []byte) {
+	if len(b) == 0 {
+		return
+	}
+	for _, v := range b {
+		c.Printf(c.Str("%c"), v)
+	}
+}
+
+func printbool(v bool) {
+	if v {
+		printstring("true")
+	} else {
+		printstring("false")
+	}
+}
+
+func printfloat(v float64) {
+	switch {
+	case v != v:
+		printstring("NaN")
+		return
+	case v+v == v && v > 0:
+		printstring("+Inf")
+		return
+	case v+v == v && v < 0:
+		printstring("-Inf")
+		return
+	}
+
+	const n = 7 // digits printed
+	var buf [n + 7]byte
+	buf[0] = '+'
+	e := 0 // exp
+	if v == 0 {
+		if 1/v < 0 {
+			buf[0] = '-'
+		}
+	} else {
+		if v < 0 {
+			v = -v
+			buf[0] = '-'
+		}
+
+		// normalize
+		for v >= 10 {
+			e++
+			v /= 10
+		}
+		for v < 1 {
+			e--
+			v *= 10
+		}
+
+		// round
+		h := 5.0
+		for i := 0; i < n; i++ {
+			h /= 10
+		}
+		v += h
+		if v >= 10 {
+			e++
+			v /= 10
+		}
+	}
+
+	// format +d.dddd+edd
+	for i := 0; i < n; i++ {
+		s := int(v)
+		buf[i+2] = byte(s + '0')
+		v -= float64(s)
+		v *= 10
+	}
+	buf[1] = buf[2]
+	buf[2] = '.'
+
+	buf[n+2] = 'e'
+	buf[n+3] = '+'
+	if e < 0 {
+		e = -e
+		buf[n+3] = '-'
+	}
+
+	buf[n+4] = byte(e/100) + '0'
+	buf[n+5] = byte(e/10)%10 + '0'
+	buf[n+6] = byte(e%10) + '0'
+	gwrite(buf[:])
+}
+
+func printuint(v uint64) {
+	var buf [100]byte
+	i := len(buf)
+	for i--; i > 0; i-- {
+		buf[i] = byte(v%10 + '0')
+		if v < 10 {
+			break
+		}
+		v /= 10
+	}
+	gwrite(buf[i:])
+}
+
+func printint(v int64) {
+	if v < 0 {
+		printstring("-")
+		v = -v
+	}
+	printuint(uint64(v))
+}
+
+var minhexdigits = 0
+
+func printhex(v uint64) {
+	const dig = "0123456789abcdef"
+	var buf [100]byte
+	i := len(buf)
+	for i--; i > 0; i-- {
+		buf[i] = dig[v%16]
+		if v < 16 && len(buf)-i >= minhexdigits {
+			break
+		}
+		v /= 16
+	}
+	i--
+	buf[i] = 'x'
+	i--
+	buf[i] = '0'
+	gwrite(buf[i:])
+}
+
+func printsp() {
+	printstring(" ")
+}
+
+func printnl() {
+	printstring("\n")
+}
+
+func printstring(s string) {
+	gwrite(bytes(s))
+}
+
+type slice struct {
+	array unsafe.Pointer
+	len   int
+	cap   int
+}
+
+type stringStruct struct {
+	str unsafe.Pointer
+	len int
+}
+
+func stringStructOf(sp *string) *stringStruct {
+	return (*stringStruct)(unsafe.Pointer(sp))
+}
+
+func bytes(s string) (ret []byte) {
+	rp := (*slice)(unsafe.Pointer(&ret))
+	sp := stringStructOf(&s)
+	rp.array = sp.str
+	rp.len = sp.len
+	rp.cap = sp.len
+	return
+}
+
+func main() {
+	printstring("llgo")
+	printnl()
+	printuint(1024)
+	printnl()
+	printhex(0x1234abcf)
+	printnl()
+	prinxor(1)
+	printnl()
+	prinsub(100)
+	printnl()
+	prinusub(1<<64 - 1)
+	printnl()
+	prinfsub(100.1)
+	printnl()
+	printany(float32(1e9))
+	printnl()
+	printany(float64(2e9))
+	printnl()
+	var b bool = true
+	if b == true && b != false {
+		println("check bool", b)
+	}
+	n1 := 0b1001
+	n2 := 0b0011
+	println("check &^", n1&^n2 == 0b1000, n2&^n1 == 0b0010)
+	println(true, false, 'a', 'A', rune('中'),
+		int8(1), int16(2), int32(3), int64(4), 5,
+		uint8(1), uint16(2), uint32(3), uint64(4), uintptr(5),
+		"llgo")
+	println(1 + 2i)
+}
+
+func println(args ...any) {
+	for i, v := range args {
+		if i != 0 {
+			printstring(" ")
+		}
+		printany(v)
+	}
+	printnl()
+}
+
+func printany(v any) {
+	switch v := v.(type) {
+	case bool:
+		printbool(v)
+	case int:
+		printint(int64(v))
+	case int8:
+		printint(int64(v))
+	case int16:
+		printint(int64(v))
+	case int32:
+		printint(int64(v))
+	case int64:
+		printint(int64(v))
+	case uint:
+		printuint(uint64(v))
+	case uint8:
+		printuint(uint64(v))
+	case uint16:
+		printuint(uint64(v))
+	case uint32:
+		printuint(uint64(v))
+	case uint64:
+		printuint(uint64(v))
+	case uintptr:
+		printuint(uint64(v))
+	case float32:
+		printfloat(float64(v))
+	case float64:
+		printfloat(float64(v))
+	case complex64:
+		printstring("(")
+		printfloat(float64(real(v)))
+		printfloat(float64(imag(v)))
+		printstring("i)")
+	case complex128:
+		printstring("(")
+		printfloat(real(v))
+		printfloat(imag(v))
+		printstring("i)")
+	case string:
+		printstring(v)
+	}
+}
+
+func prinxor(n int64) {
+	printint(^n)
+}
+
+func prinsub(n int64) {
+	printint(-n)
+}
+
+func prinusub(n uint64) {
+	printuint(-n)
+}
+
+func prinfsub(n float64) {
+	printfloat(-n)
+}

compiler/cl/_testdata/printf/in.go

@@ -0,0 +1,12 @@
+package main
+
+import _ "unsafe"
+
+//go:linkname printf C.printf
+func printf(format *int8, __llgo_va_list ...any)
+
+var hello = [...]int8{'H', 'e', 'l', 'l', 'o', '\n', 0}
+
+func main() {
+	printf(&hello[0])
+}

compiler/cl/_testdata/printf/out.ll

@@ -0,0 +1,41 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@main.hello = global [7 x i8] zeroinitializer, align 1
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  store i8 72, ptr @main.hello, align 1
+  store i8 101, ptr getelementptr inbounds (i8, ptr @main.hello, i64 1), align 1
+  store i8 108, ptr getelementptr inbounds (i8, ptr @main.hello, i64 2), align 1
+  store i8 108, ptr getelementptr inbounds (i8, ptr @main.hello, i64 3), align 1
+  store i8 111, ptr getelementptr inbounds (i8, ptr @main.hello, i64 4), align 1
+  store i8 10, ptr getelementptr inbounds (i8, ptr @main.hello, i64 5), align 1
+  store i8 0, ptr getelementptr inbounds (i8, ptr @main.hello, i64 6), align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  call void (ptr, ...) @printf(ptr @main.hello)
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare void @printf(ptr, ...)

compiler/cl/_testdata/printval/in.go

@@ -0,0 +1,12 @@
+package main
+
+import _ "unsafe"
+
+//go:linkname printf C.printf
+func printf(format *int8, __llgo_va_list ...any)
+
+var format = [...]int8{'H', 'e', 'l', 'l', 'o', ' ', '%', 'd', '\n', 0}
+
+func main() {
+	printf(&format[0], 100)
+}

compiler/cl/_testdata/printval/out.ll

@@ -0,0 +1,44 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@main.format = global [10 x i8] zeroinitializer, align 1
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  store i8 72, ptr @main.format, align 1
+  store i8 101, ptr getelementptr inbounds (i8, ptr @main.format, i64 1), align 1
+  store i8 108, ptr getelementptr inbounds (i8, ptr @main.format, i64 2), align 1
+  store i8 108, ptr getelementptr inbounds (i8, ptr @main.format, i64 3), align 1
+  store i8 111, ptr getelementptr inbounds (i8, ptr @main.format, i64 4), align 1
+  store i8 32, ptr getelementptr inbounds (i8, ptr @main.format, i64 5), align 1
+  store i8 37, ptr getelementptr inbounds (i8, ptr @main.format, i64 6), align 1
+  store i8 100, ptr getelementptr inbounds (i8, ptr @main.format, i64 7), align 1
+  store i8 10, ptr getelementptr inbounds (i8, ptr @main.format, i64 8), align 1
+  store i8 0, ptr getelementptr inbounds (i8, ptr @main.format, i64 9), align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  call void (ptr, ...) @printf(ptr @main.format, i64 100)
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare void @printf(ptr, ...)

compiler/cl/_testdata/ptrmthd/in.go

@@ -0,0 +1,19 @@
+package main
+
+import _ "unsafe"
+
+//go:linkname printf C.printf
+func printf(format *int8, __llgo_va_list ...any)
+
+type T int8
+
+func (f *T) Print(v int) {
+	printf((*int8)(f), v)
+}
+
+var format = [...]T{'H', 'e', 'l', 'l', 'o', ' ', '%', 'd', '\n', 0}
+
+func main() {
+	f := &format[0]
+	f.Print(100)
+}

compiler/cl/_testdata/ptrmthd/out.ll

@@ -0,0 +1,50 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@main.format = global [10 x i8] zeroinitializer, align 1
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+
+define void @"main.(*T).Print"(ptr %0, i64 %1) {
+_llgo_0:
+  call void (ptr, ...) @printf(ptr %0, i64 %1)
+  ret void
+}
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  store i8 72, ptr @main.format, align 1
+  store i8 101, ptr getelementptr inbounds (i8, ptr @main.format, i64 1), align 1
+  store i8 108, ptr getelementptr inbounds (i8, ptr @main.format, i64 2), align 1
+  store i8 108, ptr getelementptr inbounds (i8, ptr @main.format, i64 3), align 1
+  store i8 111, ptr getelementptr inbounds (i8, ptr @main.format, i64 4), align 1
+  store i8 32, ptr getelementptr inbounds (i8, ptr @main.format, i64 5), align 1
+  store i8 37, ptr getelementptr inbounds (i8, ptr @main.format, i64 6), align 1
+  store i8 100, ptr getelementptr inbounds (i8, ptr @main.format, i64 7), align 1
+  store i8 10, ptr getelementptr inbounds (i8, ptr @main.format, i64 8), align 1
+  store i8 0, ptr getelementptr inbounds (i8, ptr @main.format, i64 9), align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  call void @"main.(*T).Print"(ptr @main.format, i64 100)
+  ret i32 0
+}
+
+declare void @printf(ptr, ...)
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()

compiler/cl/_testdata/uint/in.go

@@ -0,0 +1,13 @@
+package main
+
+import "github.com/goplus/llgo/c"
+
+func f(a c.Uint) c.Uint {
+	a++
+	return a
+}
+
+func main() {
+	var a c.Uint = 100
+	c.Printf(c.Str("Hello, %u\n"), f(a))
+}

compiler/cl/_testdata/uint/out.ll

@@ -0,0 +1,41 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+@0 = private unnamed_addr constant [11 x i8] c"Hello, %u\0A\00", align 1
+
+define i32 @main.f(i32 %0) {
+_llgo_0:
+  %1 = add i32 %0, 1
+  ret i32 %1
+}
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = call i32 @main.f(i32 100)
+  %3 = call i32 (ptr, ...) @printf(ptr @0, i32 %2)
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare i32 @printf(ptr, ...)

compiler/cl/_testdata/untyped/in.go

@@ -0,0 +1,11 @@
+package main
+
+const c = 100
+
+var a float64 = 1
+
+func main() {
+	if c > 100 {
+		a = 0
+	}
+}

compiler/cl/_testdata/untyped/out.ll

@@ -0,0 +1,39 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@main.a = global double 0.000000e+00, align 8
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  store double 1.000000e+00, ptr @main.a, align 8
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  br i1 false, label %_llgo_1, label %_llgo_2
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store double 0.000000e+00, ptr @main.a, align 8
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()

compiler/cl/_testdata/utf8/in.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"unicode/utf8"
+)
+
+func main() {
+	var str = "中abcd"
+	for i := 0; i < len(str); {
+		r, n := utf8.DecodeRuneInString(str[i:])
+		i += n
+		println(r)
+	}
+	println(index(2) == 3)
+}
+
+var array = [...]uint8{
+	1, 2, 3, 4, 5, 6, 7, 8,
+}
+
+func index(n int8) uint8 {
+	return array[n]
+}

compiler/cl/_testdata/utf8/out.ll

@@ -0,0 +1,92 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+%"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
+
+@main.array = global [8 x i8] zeroinitializer, align 1
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+@0 = private unnamed_addr constant [7 x i8] c"\E4\B8\ADabcd", align 1
+
+define i8 @main.index(i8 %0) {
+_llgo_0:
+  %1 = sext i8 %0 to i64
+  %2 = icmp slt i64 %1, 0
+  %3 = icmp sge i64 %1, 8
+  %4 = or i1 %3, %2
+  call void @"github.com/goplus/llgo/internal/runtime.AssertIndexRange"(i1 %4)
+  %5 = getelementptr inbounds i8, ptr @main.array, i64 %1
+  %6 = load i8, ptr %5, align 1
+  ret i8 %6
+}
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  call void @"unicode/utf8.init"()
+  store i8 1, ptr @main.array, align 1
+  store i8 2, ptr getelementptr inbounds (i8, ptr @main.array, i64 1), align 1
+  store i8 3, ptr getelementptr inbounds (i8, ptr @main.array, i64 2), align 1
+  store i8 4, ptr getelementptr inbounds (i8, ptr @main.array, i64 3), align 1
+  store i8 5, ptr getelementptr inbounds (i8, ptr @main.array, i64 4), align 1
+  store i8 6, ptr getelementptr inbounds (i8, ptr @main.array, i64 5), align 1
+  store i8 7, ptr getelementptr inbounds (i8, ptr @main.array, i64 6), align 1
+  store i8 8, ptr getelementptr inbounds (i8, ptr @main.array, i64 7), align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  br label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_2, %_llgo_0
+  %2 = phi i64 [ 0, %_llgo_0 ], [ %8, %_llgo_2 ]
+  %3 = icmp slt i64 %2, 7
+  br i1 %3, label %_llgo_2, label %_llgo_3
+
+_llgo_2:                                          ; preds = %_llgo_1
+  %4 = call %"github.com/goplus/llgo/internal/runtime.String" @"github.com/goplus/llgo/internal/runtime.StringSlice"(%"github.com/goplus/llgo/internal/runtime.String" { ptr @0, i64 7 }, i64 %2, i64 7)
+  %5 = call { i32, i64 } @"unicode/utf8.DecodeRuneInString"(%"github.com/goplus/llgo/internal/runtime.String" %4)
+  %6 = extractvalue { i32, i64 } %5, 0
+  %7 = extractvalue { i32, i64 } %5, 1
+  %8 = add i64 %2, %7
+  %9 = sext i32 %6 to i64
+  call void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64 %9)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  br label %_llgo_1
+
+_llgo_3:                                          ; preds = %_llgo_1
+  %10 = call i8 @main.index(i8 2)
+  %11 = icmp eq i8 %10, 3
+  call void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1 %11)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.AssertIndexRange"(i1)
+
+declare void @"unicode/utf8.init"()
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare %"github.com/goplus/llgo/internal/runtime.String" @"github.com/goplus/llgo/internal/runtime.StringSlice"(%"github.com/goplus/llgo/internal/runtime.String", i64, i64)
+
+declare { i32, i64 } @"unicode/utf8.DecodeRuneInString"(%"github.com/goplus/llgo/internal/runtime.String")
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintBool"(i1)

compiler/cl/_testdata/vargs/in.go

@@ -0,0 +1,13 @@
+package main
+
+import "github.com/goplus/llgo/c"
+
+func test(a ...any) {
+	for _, v := range a {
+		c.Printf(c.Str("%d\n"), v.(int))
+	}
+}
+
+func main() {
+	test(1, 2, 3)
+}

compiler/cl/_testdata/vargs/out.ll

@@ -0,0 +1,140 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+%"github.com/goplus/llgo/internal/runtime.eface" = type { ptr, ptr }
+%"github.com/goplus/llgo/internal/runtime.Slice" = type { ptr, i64, i64 }
+%"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
+
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+@_llgo_int = linkonce global ptr null, align 8
+@0 = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
+@1 = private unnamed_addr constant [21 x i8] c"type assertion failed", align 1
+@_llgo_string = linkonce global ptr null, align 8
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  call void @"main.init$after"()
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 48)
+  %3 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %2, i64 0
+  %4 = load ptr, ptr @_llgo_int, align 8
+  %5 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %4, 0
+  %6 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %5, ptr inttoptr (i64 1 to ptr), 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %6, ptr %3, align 8
+  %7 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %2, i64 1
+  %8 = load ptr, ptr @_llgo_int, align 8
+  %9 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %8, 0
+  %10 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %9, ptr inttoptr (i64 2 to ptr), 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %10, ptr %7, align 8
+  %11 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %2, i64 2
+  %12 = load ptr, ptr @_llgo_int, align 8
+  %13 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %12, 0
+  %14 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %13, ptr inttoptr (i64 3 to ptr), 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %14, ptr %11, align 8
+  %15 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" undef, ptr %2, 0
+  %16 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %15, i64 3, 1
+  %17 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %16, i64 3, 2
+  call void @main.test(%"github.com/goplus/llgo/internal/runtime.Slice" %17)
+  ret i32 0
+}
+
+define void @main.test(%"github.com/goplus/llgo/internal/runtime.Slice" %0) {
+_llgo_0:
+  %1 = extractvalue %"github.com/goplus/llgo/internal/runtime.Slice" %0, 1
+  br label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_4, %_llgo_0
+  %2 = phi i64 [ -1, %_llgo_0 ], [ %3, %_llgo_4 ]
+  %3 = add i64 %2, 1
+  %4 = icmp slt i64 %3, %1
+  br i1 %4, label %_llgo_2, label %_llgo_3
+
+_llgo_2:                                          ; preds = %_llgo_1
+  %5 = extractvalue %"github.com/goplus/llgo/internal/runtime.Slice" %0, 0
+  %6 = extractvalue %"github.com/goplus/llgo/internal/runtime.Slice" %0, 1
+  %7 = icmp slt i64 %3, 0
+  %8 = icmp sge i64 %3, %6
+  %9 = or i1 %8, %7
+  call void @"github.com/goplus/llgo/internal/runtime.AssertIndexRange"(i1 %9)
+  %10 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %5, i64 %3
+  %11 = load %"github.com/goplus/llgo/internal/runtime.eface", ptr %10, align 8
+  %12 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %11, 0
+  %13 = load ptr, ptr @_llgo_int, align 8
+  %14 = icmp eq ptr %12, %13
+  br i1 %14, label %_llgo_4, label %_llgo_5
+
+_llgo_3:                                          ; preds = %_llgo_1
+  ret void
+
+_llgo_4:                                          ; preds = %_llgo_2
+  %15 = extractvalue %"github.com/goplus/llgo/internal/runtime.eface" %11, 1
+  %16 = ptrtoint ptr %15 to i64
+  %17 = call i32 (ptr, ...) @printf(ptr @0, i64 %16)
+  br label %_llgo_1
+
+_llgo_5:                                          ; preds = %_llgo_2
+  %18 = load ptr, ptr @_llgo_string, align 8
+  %19 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 16)
+  store %"github.com/goplus/llgo/internal/runtime.String" { ptr @1, i64 21 }, ptr %19, align 8
+  %20 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %18, 0
+  %21 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %20, ptr %19, 1
+  call void @"github.com/goplus/llgo/internal/runtime.Panic"(%"github.com/goplus/llgo/internal/runtime.eface" %21)
+  unreachable
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64)
+
+define void @"main.init$after"() {
+_llgo_0:
+  %0 = load ptr, ptr @_llgo_int, align 8
+  %1 = icmp eq ptr %0, null
+  br i1 %1, label %_llgo_1, label %_llgo_2
+
+_llgo_1:                                          ; preds = %_llgo_0
+  %2 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 34)
+  store ptr %2, ptr @_llgo_int, align 8
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  %3 = load ptr, ptr @_llgo_string, align 8
+  %4 = icmp eq ptr %3, null
+  br i1 %4, label %_llgo_3, label %_llgo_4
+
+_llgo_3:                                          ; preds = %_llgo_2
+  %5 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 24)
+  store ptr %5, ptr @_llgo_string, align 8
+  br label %_llgo_4
+
+_llgo_4:                                          ; preds = %_llgo_3, %_llgo_2
+  ret void
+}
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64)
+
+declare void @"github.com/goplus/llgo/internal/runtime.AssertIndexRange"(i1)
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64)
+
+declare void @"github.com/goplus/llgo/internal/runtime.Panic"(%"github.com/goplus/llgo/internal/runtime.eface")
+
+declare i32 @printf(ptr, ...)

compiler/cl/_testdata/varinit/in.go

@@ -0,0 +1,8 @@
+package main
+
+var a = 100
+
+func main() {
+	a++
+	_ = a
+}

compiler/cl/_testdata/varinit/out.ll

@@ -0,0 +1,36 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@main.a = global i64 0, align 8
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  store i64 100, ptr @main.a, align 4
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = load i64, ptr @main.a, align 4
+  %3 = add i64 %2, 1
+  store i64 %3, ptr @main.a, align 4
+  %4 = load i64, ptr @main.a, align 4
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()

compiler/cl/_testdefer/firstloop1/in.go

@@ -0,0 +1,16 @@
+package foo
+
+func f(s string) bool {
+	return len(s) > 2
+}
+
+func Loop() {
+	for i := 0; i < 3; i++ {
+		if s := "hello"; f(s) {
+			defer println(s)
+		} else {
+			defer println("world")
+			return
+		}
+	}
+}

compiler/cl/_testdefer/firstloop1/out.txt

@@ -0,0 +1,7 @@
+ 0: always
+ 6: cond
+ 1: loop
+ 2: loop
+ 4: loop
+ 3: cond
+ 5: cond

compiler/cl/_testdefer/firstloop2/in.go

@@ -0,0 +1,7 @@
+package foo
+
+func Loop() {
+	for i := 0; i < 3; i++ {
+		println(i)
+	}
+}

compiler/cl/_testdefer/firstloop2/out.txt

@@ -0,0 +1,4 @@
+ 0: always
+ 1: loop
+ 2: loop
+ 3: always

compiler/cl/_testdefer/loop/in.go

@@ -0,0 +1,20 @@
+package main
+
+func f(s string) bool {
+	return len(s) > 2
+}
+
+func main() {
+	defer func() {
+		println("hi")
+	}()
+	for i := 0; i < 3; i++ {
+		if s := "hello"; f(s) {
+			defer println(s)
+		} else {
+			defer println("world")
+			return
+		}
+	}
+	defer println("bye")
+}

compiler/cl/_testdefer/loop/out.txt

@@ -0,0 +1,7 @@
+ 0: always
+ 1: cond
+ 2: loop
+ 3: loop
+ 5: loop
+ 4: cond
+ 6: cond

compiler/cl/_testdefer/multiret/in.go

@@ -0,0 +1,18 @@
+package main
+
+func f(s string) bool {
+	return len(s) > 2
+}
+
+func main() {
+	defer func() {
+		println("hi")
+	}()
+	if s := "hello"; f(s) {
+		defer println(s)
+	} else {
+		defer println("world")
+		return
+	}
+	defer println("bye")
+}

compiler/cl/_testdefer/multiret/out.txt

@@ -0,0 +1,4 @@
+ 0: always
+ 1: cond
+ 2: cond
+ 3: cond

compiler/cl/_testdefer/print/in.go

@@ -0,0 +1,52 @@
+package main
+
+func f() float64 {
+	return 1.0
+}
+
+func main() {
+	var v = f()
+	const n = 7 // digits printed
+	var buf [n + 7]byte
+	buf[0] = '+'
+	e := 0 // exp
+	if v == 0 {
+		if 1/v < 0 {
+			buf[0] = '-'
+		}
+	} else {
+		if v < 0 {
+			v = -v
+			buf[0] = '-'
+		}
+
+		// normalize
+		for v >= 10 {
+			e++
+			v /= 10
+		}
+		for v < 1 {
+			e--
+			v *= 10
+		}
+
+		// round
+		h := 5.0
+		for i := 0; i < n; i++ {
+			h /= 10
+		}
+		v += h
+		if v >= 10 {
+			e++
+			v /= 10
+		}
+	}
+
+	// format +d.dddd+edd
+	for i := 0; i < n; i++ {
+		s := int(v)
+		buf[i+2] = byte(s + '0')
+		v -= float64(s)
+		v *= 10
+	}
+}

compiler/cl/_testdefer/print/out.txt

@@ -0,0 +1,18 @@
+ 0: always
+ 1: cond
+ 3: cond
+ 4: cond
+ 5: cond
+ 7: loop
+ 6: loop
+10: loop
+ 8: loop
+ 9: cond
+11: loop
+12: loop
+13: cond
+14: cond
+ 2: cond
+15: loop
+16: loop
+17: always

compiler/cl/_testdefer/singleret/in.go

@@ -0,0 +1,17 @@
+package main
+
+func f(s string) bool {
+	return len(s) > 2
+}
+
+func main() {
+	defer func() {
+		println("hi")
+	}()
+	if s := "hello"; f(s) {
+		defer println(s)
+	} else {
+		defer println("world")
+	}
+	defer println("bye")
+}

compiler/cl/_testdefer/singleret/out.txt

@@ -0,0 +1,5 @@
+ 0: always
+ 1: cond
+ 2: cond
+ 4: cond
+ 3: always

compiler/cl/_testgo/allocinloop/in.go

@@ -0,0 +1,17 @@
+package main
+
+func Foo(s string) int {
+	return len(s)
+}
+
+func Test() {
+	j := 0
+	for i := 0; i < 10000000; i++ {
+		j += Foo("hello")
+	}
+	println(j)
+}
+
+func main() {
+	Test()
+}

compiler/cl/_testgo/allocinloop/out.ll

@@ -0,0 +1,66 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+%"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
+
+@"main.init$guard" = global i1 false, align 1
+@0 = private unnamed_addr constant [5 x i8] c"hello", align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+
+define i64 @main.Foo(%"github.com/goplus/llgo/internal/runtime.String" %0) {
+_llgo_0:
+  %1 = extractvalue %"github.com/goplus/llgo/internal/runtime.String" %0, 1
+  ret i64 %1
+}
+
+define void @main.Test() {
+_llgo_0:
+  br label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_2, %_llgo_0
+  %0 = phi i64 [ 0, %_llgo_0 ], [ %4, %_llgo_2 ]
+  %1 = phi i64 [ 0, %_llgo_0 ], [ %5, %_llgo_2 ]
+  %2 = icmp slt i64 %1, 10000000
+  br i1 %2, label %_llgo_2, label %_llgo_3
+
+_llgo_2:                                          ; preds = %_llgo_1
+  %3 = call i64 @main.Foo(%"github.com/goplus/llgo/internal/runtime.String" { ptr @0, i64 5 })
+  %4 = add i64 %0, %3
+  %5 = add i64 %1, 1
+  br label %_llgo_1
+
+_llgo_3:                                          ; preds = %_llgo_1
+  call void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64 %0)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  ret void
+}
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  call void @main.Test()
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8)
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()

compiler/cl/_testgo/cgobasic/cgobasic.go

@@ -0,0 +1,55 @@
+package main
+
+/*
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+*/
+import "C"
+import (
+	"fmt"
+	"unsafe"
+)
+
+func main() {
+	// C.CString example
+	cstr := C.CString("Hello, World!")
+	C.puts(cstr)
+
+	// C.CBytes example
+	bytes := []byte{65, 66, 67, 68} // ABCD
+	cbytes := C.CBytes(bytes)
+
+	// C.GoString example
+	gostr := C.GoString(cstr)
+	println("Converted back to Go string: ", gostr)
+
+	// C.GoStringN example (with length limit)
+	gostringN := C.GoStringN(cstr, 5) // only take first 5 characters
+	println("Length-limited string: ", gostringN)
+
+	// C.GoBytes example
+	gobytes := C.GoBytes(cbytes, 4) // 4 is the length
+	println("Converted back to Go byte slice: ", gobytes)
+
+	// C math library examples
+	x := 2.0
+	// Calculate square root
+	sqrtResult := C.sqrt(C.double(x))
+	fmt.Printf("sqrt(%v) = %v\n", x, float64(sqrtResult))
+
+	// Calculate sine
+	sinResult := C.sin(C.double(x))
+	fmt.Printf("sin(%v) = %v\n", x, float64(sinResult))
+
+	// Calculate cosine
+	cosResult := C.cos(C.double(x))
+	fmt.Printf("cos(%v) = %v\n", x, float64(cosResult))
+
+	// Calculate natural logarithm
+	logResult := C.log(C.double(x))
+	fmt.Printf("log(%v) = %v\n", x, float64(logResult))
+
+	C.free(unsafe.Pointer(cstr))
+	C.free(cbytes)
+}

compiler/cl/_testgo/cgobasic/out.ll

@@ -0,0 +1,404 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+%"github.com/goplus/llgo/internal/runtime.eface" = type { ptr, ptr }
+%"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
+%"github.com/goplus/llgo/internal/runtime.Slice" = type { ptr, i64, i64 }
+%"github.com/goplus/llgo/internal/runtime.iface" = type { ptr, ptr }
+
+@"github.com/goplus/llgo/internal/runtime.cgoAlwaysFalse" = external global i1, align 1
+@_cgo_62905c3ec377_Cfunc__Cmalloc = external global i8, align 1
+@_cgo_62905c3ec377_Cfunc_cos = external global i8, align 1
+@_cgo_62905c3ec377_Cfunc_free = external global i8, align 1
+@_cgo_62905c3ec377_Cfunc_log = external global i8, align 1
+@_cgo_62905c3ec377_Cfunc_puts = external global i8, align 1
+@_cgo_62905c3ec377_Cfunc_sin = external global i8, align 1
+@_cgo_62905c3ec377_Cfunc_sqrt = external global i8, align 1
+@main._cgo_62905c3ec377_Cfunc__Cmalloc = global ptr null, align 8
+@main._cgo_62905c3ec377_Cfunc_cos = global ptr null, align 8
+@main._cgo_62905c3ec377_Cfunc_free = global ptr null, align 8
+@main._cgo_62905c3ec377_Cfunc_log = global ptr null, align 8
+@main._cgo_62905c3ec377_Cfunc_puts = global ptr null, align 8
+@main._cgo_62905c3ec377_Cfunc_sin = global ptr null, align 8
+@main._cgo_62905c3ec377_Cfunc_sqrt = global ptr null, align 8
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+@0 = private unnamed_addr constant [13 x i8] c"Hello, World!", align 1
+@1 = private unnamed_addr constant [29 x i8] c"Converted back to Go string: ", align 1
+@2 = private unnamed_addr constant [23 x i8] c"Length-limited string: ", align 1
+@3 = private unnamed_addr constant [33 x i8] c"Converted back to Go byte slice: ", align 1
+@_llgo_float64 = linkonce global ptr null, align 8
+@4 = private unnamed_addr constant [14 x i8] c"sqrt(%v) = %v\0A", align 1
+@5 = private unnamed_addr constant [13 x i8] c"sin(%v) = %v\0A", align 1
+@6 = private unnamed_addr constant [13 x i8] c"cos(%v) = %v\0A", align 1
+@7 = private unnamed_addr constant [13 x i8] c"log(%v) = %v\0A", align 1
+@_llgo_byte = linkonce global ptr null, align 8
+@"[]_llgo_byte" = linkonce global ptr null, align 8
+@_llgo_Pointer = linkonce global ptr null, align 8
+
+define double @main._Cfunc_cos(double %0) {
+_llgo_0:
+  %1 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  %2 = load ptr, ptr @main._cgo_62905c3ec377_Cfunc_cos, align 8
+  %3 = load ptr, ptr %2, align 8
+  %4 = call double %3(double %0)
+  ret double %4
+}
+
+define [0 x i8] @main._Cfunc_free(ptr %0) {
+_llgo_0:
+  %1 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  %2 = load ptr, ptr @main._cgo_62905c3ec377_Cfunc_free, align 8
+  %3 = load ptr, ptr %2, align 8
+  %4 = call [0 x i8] %3(ptr %0)
+  ret [0 x i8] %4
+}
+
+define double @main._Cfunc_log(double %0) {
+_llgo_0:
+  %1 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  %2 = load ptr, ptr @main._cgo_62905c3ec377_Cfunc_log, align 8
+  %3 = load ptr, ptr %2, align 8
+  %4 = call double %3(double %0)
+  ret double %4
+}
+
+define i32 @main._Cfunc_puts(ptr %0) {
+_llgo_0:
+  %1 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  %2 = load ptr, ptr @main._cgo_62905c3ec377_Cfunc_puts, align 8
+  %3 = load ptr, ptr %2, align 8
+  %4 = call i32 %3(ptr %0)
+  ret i32 %4
+}
+
+define double @main._Cfunc_sin(double %0) {
+_llgo_0:
+  %1 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  %2 = load ptr, ptr @main._cgo_62905c3ec377_Cfunc_sin, align 8
+  %3 = load ptr, ptr %2, align 8
+  %4 = call double %3(double %0)
+  ret double %4
+}
+
+define double @main._Cfunc_sqrt(double %0) {
+_llgo_0:
+  %1 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  %2 = load ptr, ptr @main._cgo_62905c3ec377_Cfunc_sqrt, align 8
+  %3 = load ptr, ptr %2, align 8
+  %4 = call double %3(double %0)
+  ret double %4
+}
+
+define ptr @main._Cgo_ptr(ptr %0) {
+_llgo_0:
+  ret ptr %0
+}
+
+declare void @runtime.cgoUse(%"github.com/goplus/llgo/internal/runtime.eface")
+
+declare void @main._cgoCheckResult(%"github.com/goplus/llgo/internal/runtime.eface")
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  call void @syscall.init()
+  call void @fmt.init()
+  call void @"main.init$after"()
+  store ptr @_cgo_62905c3ec377_Cfunc_cos, ptr @main._cgo_62905c3ec377_Cfunc_cos, align 8
+  store ptr @_cgo_62905c3ec377_Cfunc_free, ptr @main._cgo_62905c3ec377_Cfunc_free, align 8
+  store ptr @_cgo_62905c3ec377_Cfunc_log, ptr @main._cgo_62905c3ec377_Cfunc_log, align 8
+  store ptr @_cgo_62905c3ec377_Cfunc_puts, ptr @main._cgo_62905c3ec377_Cfunc_puts, align 8
+  store ptr @_cgo_62905c3ec377_Cfunc_sin, ptr @main._cgo_62905c3ec377_Cfunc_sin, align 8
+  store ptr @_cgo_62905c3ec377_Cfunc_sqrt, ptr @main._cgo_62905c3ec377_Cfunc_sqrt, align 8
+  store ptr @_cgo_62905c3ec377_Cfunc__Cmalloc, ptr @main._cgo_62905c3ec377_Cfunc__Cmalloc, align 8
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  %3 = call ptr @"github.com/goplus/llgo/internal/runtime.CString"(%"github.com/goplus/llgo/internal/runtime.String" { ptr @0, i64 13 })
+  store ptr %3, ptr %2, align 8
+  %4 = load ptr, ptr %2, align 8
+  %5 = call i32 @main._Cfunc_puts(ptr %4)
+  %6 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 24)
+  %7 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 4)
+  %8 = getelementptr inbounds i8, ptr %7, i64 0
+  store i8 65, ptr %8, align 1
+  %9 = getelementptr inbounds i8, ptr %7, i64 1
+  store i8 66, ptr %9, align 1
+  %10 = getelementptr inbounds i8, ptr %7, i64 2
+  store i8 67, ptr %10, align 1
+  %11 = getelementptr inbounds i8, ptr %7, i64 3
+  store i8 68, ptr %11, align 1
+  %12 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" undef, ptr %7, 0
+  %13 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %12, i64 4, 1
+  %14 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %13, i64 4, 2
+  store %"github.com/goplus/llgo/internal/runtime.Slice" %14, ptr %6, align 8
+  %15 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  %16 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 8)
+  %17 = getelementptr inbounds { ptr }, ptr %16, i32 0, i32 0
+  store ptr %6, ptr %17, align 8
+  %18 = insertvalue { ptr, ptr } { ptr @"main.main$1", ptr undef }, ptr %16, 1
+  %19 = extractvalue { ptr, ptr } %18, 1
+  %20 = extractvalue { ptr, ptr } %18, 0
+  %21 = call ptr %20(ptr %19)
+  store ptr %21, ptr %15, align 8
+  %22 = load ptr, ptr %2, align 8
+  %23 = call %"github.com/goplus/llgo/internal/runtime.String" @"github.com/goplus/llgo/internal/runtime.GoString"(ptr %22)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" { ptr @1, i64 29 })
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %23)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  %24 = load ptr, ptr %2, align 8
+  %25 = call %"github.com/goplus/llgo/internal/runtime.String" @"github.com/goplus/llgo/internal/runtime.GoStringN"(ptr %24, i32 5)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" { ptr @2, i64 23 })
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %25)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  %26 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 8)
+  %27 = getelementptr inbounds { ptr }, ptr %26, i32 0, i32 0
+  store ptr %15, ptr %27, align 8
+  %28 = insertvalue { ptr, ptr } { ptr @"main.main$2", ptr undef }, ptr %26, 1
+  %29 = extractvalue { ptr, ptr } %28, 1
+  %30 = extractvalue { ptr, ptr } %28, 0
+  %31 = call %"github.com/goplus/llgo/internal/runtime.Slice" %30(ptr %29)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" { ptr @3, i64 33 })
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintSlice"(%"github.com/goplus/llgo/internal/runtime.Slice" %31)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  %32 = call double @main._Cfunc_sqrt(double 2.000000e+00)
+  %33 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 32)
+  %34 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %33, i64 0
+  %35 = load ptr, ptr @_llgo_float64, align 8
+  %36 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %35, 0
+  %37 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %36, ptr inttoptr (i64 4611686018427387904 to ptr), 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %37, ptr %34, align 8
+  %38 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %33, i64 1
+  %39 = load ptr, ptr @_llgo_float64, align 8
+  %40 = bitcast double %32 to i64
+  %41 = inttoptr i64 %40 to ptr
+  %42 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %39, 0
+  %43 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %42, ptr %41, 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %43, ptr %38, align 8
+  %44 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" undef, ptr %33, 0
+  %45 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %44, i64 2, 1
+  %46 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %45, i64 2, 2
+  %47 = call { i64, %"github.com/goplus/llgo/internal/runtime.iface" } @fmt.Printf(%"github.com/goplus/llgo/internal/runtime.String" { ptr @4, i64 14 }, %"github.com/goplus/llgo/internal/runtime.Slice" %46)
+  %48 = call double @main._Cfunc_sin(double 2.000000e+00)
+  %49 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 32)
+  %50 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %49, i64 0
+  %51 = load ptr, ptr @_llgo_float64, align 8
+  %52 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %51, 0
+  %53 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %52, ptr inttoptr (i64 4611686018427387904 to ptr), 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %53, ptr %50, align 8
+  %54 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %49, i64 1
+  %55 = load ptr, ptr @_llgo_float64, align 8
+  %56 = bitcast double %48 to i64
+  %57 = inttoptr i64 %56 to ptr
+  %58 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %55, 0
+  %59 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %58, ptr %57, 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %59, ptr %54, align 8
+  %60 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" undef, ptr %49, 0
+  %61 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %60, i64 2, 1
+  %62 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %61, i64 2, 2
+  %63 = call { i64, %"github.com/goplus/llgo/internal/runtime.iface" } @fmt.Printf(%"github.com/goplus/llgo/internal/runtime.String" { ptr @5, i64 13 }, %"github.com/goplus/llgo/internal/runtime.Slice" %62)
+  %64 = call double @main._Cfunc_cos(double 2.000000e+00)
+  %65 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 32)
+  %66 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %65, i64 0
+  %67 = load ptr, ptr @_llgo_float64, align 8
+  %68 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %67, 0
+  %69 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %68, ptr inttoptr (i64 4611686018427387904 to ptr), 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %69, ptr %66, align 8
+  %70 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %65, i64 1
+  %71 = load ptr, ptr @_llgo_float64, align 8
+  %72 = bitcast double %64 to i64
+  %73 = inttoptr i64 %72 to ptr
+  %74 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %71, 0
+  %75 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %74, ptr %73, 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %75, ptr %70, align 8
+  %76 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" undef, ptr %65, 0
+  %77 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %76, i64 2, 1
+  %78 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %77, i64 2, 2
+  %79 = call { i64, %"github.com/goplus/llgo/internal/runtime.iface" } @fmt.Printf(%"github.com/goplus/llgo/internal/runtime.String" { ptr @6, i64 13 }, %"github.com/goplus/llgo/internal/runtime.Slice" %78)
+  %80 = call double @main._Cfunc_log(double 2.000000e+00)
+  %81 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 32)
+  %82 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %81, i64 0
+  %83 = load ptr, ptr @_llgo_float64, align 8
+  %84 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %83, 0
+  %85 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %84, ptr inttoptr (i64 4611686018427387904 to ptr), 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %85, ptr %82, align 8
+  %86 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %81, i64 1
+  %87 = load ptr, ptr @_llgo_float64, align 8
+  %88 = bitcast double %80 to i64
+  %89 = inttoptr i64 %88 to ptr
+  %90 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %87, 0
+  %91 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %90, ptr %89, 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %91, ptr %86, align 8
+  %92 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" undef, ptr %81, 0
+  %93 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %92, i64 2, 1
+  %94 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %93, i64 2, 2
+  %95 = call { i64, %"github.com/goplus/llgo/internal/runtime.iface" } @fmt.Printf(%"github.com/goplus/llgo/internal/runtime.String" { ptr @7, i64 13 }, %"github.com/goplus/llgo/internal/runtime.Slice" %94)
+  %96 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 8)
+  %97 = getelementptr inbounds { ptr }, ptr %96, i32 0, i32 0
+  store ptr %2, ptr %97, align 8
+  %98 = insertvalue { ptr, ptr } { ptr @"main.main$3", ptr undef }, ptr %96, 1
+  %99 = extractvalue { ptr, ptr } %98, 1
+  %100 = extractvalue { ptr, ptr } %98, 0
+  call void %100(ptr %99)
+  %101 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 8)
+  %102 = getelementptr inbounds { ptr }, ptr %101, i32 0, i32 0
+  store ptr %15, ptr %102, align 8
+  %103 = insertvalue { ptr, ptr } { ptr @"main.main$4", ptr undef }, ptr %101, 1
+  %104 = extractvalue { ptr, ptr } %103, 1
+  %105 = extractvalue { ptr, ptr } %103, 0
+  call void %105(ptr %104)
+  ret i32 0
+}
+
+define ptr @"main.main$1"(ptr %0) {
+_llgo_0:
+  %1 = load { ptr }, ptr %0, align 8
+  %2 = extractvalue { ptr } %1, 0
+  %3 = load %"github.com/goplus/llgo/internal/runtime.Slice", ptr %2, align 8
+  %4 = load ptr, ptr @_llgo_byte, align 8
+  %5 = load ptr, ptr @"[]_llgo_byte", align 8
+  %6 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 24)
+  store %"github.com/goplus/llgo/internal/runtime.Slice" %3, ptr %6, align 8
+  %7 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %5, 0
+  %8 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %7, ptr %6, 1
+  %9 = call ptr @"github.com/goplus/llgo/internal/runtime.CBytes"(%"github.com/goplus/llgo/internal/runtime.Slice" %3)
+  ret ptr %9
+}
+
+define %"github.com/goplus/llgo/internal/runtime.Slice" @"main.main$2"(ptr %0) {
+_llgo_0:
+  %1 = load { ptr }, ptr %0, align 8
+  %2 = extractvalue { ptr } %1, 0
+  %3 = load ptr, ptr %2, align 8
+  %4 = load ptr, ptr @_llgo_Pointer, align 8
+  %5 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %4, 0
+  %6 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %5, ptr %3, 1
+  %7 = call %"github.com/goplus/llgo/internal/runtime.Slice" @"github.com/goplus/llgo/internal/runtime.GoBytes"(ptr %3, i32 4)
+  ret %"github.com/goplus/llgo/internal/runtime.Slice" %7
+}
+
+define void @"main.main$3"(ptr %0) {
+_llgo_0:
+  %1 = load { ptr }, ptr %0, align 8
+  %2 = extractvalue { ptr } %1, 0
+  %3 = load ptr, ptr %2, align 8
+  %4 = load ptr, ptr @_llgo_Pointer, align 8
+  %5 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %4, 0
+  %6 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %5, ptr %3, 1
+  %7 = call [0 x i8] @main._Cfunc_free(ptr %3)
+  ret void
+}
+
+define void @"main.main$4"(ptr %0) {
+_llgo_0:
+  %1 = load { ptr }, ptr %0, align 8
+  %2 = extractvalue { ptr } %1, 0
+  %3 = load ptr, ptr %2, align 8
+  %4 = load ptr, ptr @_llgo_Pointer, align 8
+  %5 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %4, 0
+  %6 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %5, ptr %3, 1
+  %7 = call [0 x i8] @main._Cfunc_free(ptr %3)
+  ret void
+}
+
+declare void @runtime.throw(%"github.com/goplus/llgo/internal/runtime.String")
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64)
+
+declare void @syscall.init()
+
+declare void @fmt.init()
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.CString"(%"github.com/goplus/llgo/internal/runtime.String")
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64)
+
+declare %"github.com/goplus/llgo/internal/runtime.String" @"github.com/goplus/llgo/internal/runtime.GoString"(ptr)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String")
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8)
+
+declare %"github.com/goplus/llgo/internal/runtime.String" @"github.com/goplus/llgo/internal/runtime.GoStringN"(ptr, i64)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintSlice"(%"github.com/goplus/llgo/internal/runtime.Slice")
+
+define void @"main.init$after"() {
+_llgo_0:
+  %0 = load ptr, ptr @_llgo_float64, align 8
+  %1 = icmp eq ptr %0, null
+  br i1 %1, label %_llgo_1, label %_llgo_2
+
+_llgo_1:                                          ; preds = %_llgo_0
+  %2 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 46)
+  store ptr %2, ptr @_llgo_float64, align 8
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  %3 = load ptr, ptr @_llgo_byte, align 8
+  %4 = icmp eq ptr %3, null
+  br i1 %4, label %_llgo_3, label %_llgo_4
+
+_llgo_3:                                          ; preds = %_llgo_2
+  %5 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 40)
+  store ptr %5, ptr @_llgo_byte, align 8
+  br label %_llgo_4
+
+_llgo_4:                                          ; preds = %_llgo_3, %_llgo_2
+  %6 = load ptr, ptr @"[]_llgo_byte", align 8
+  %7 = icmp eq ptr %6, null
+  br i1 %7, label %_llgo_5, label %_llgo_6
+
+_llgo_5:                                          ; preds = %_llgo_4
+  %8 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 40)
+  %9 = call ptr @"github.com/goplus/llgo/internal/runtime.SliceOf"(ptr %8)
+  store ptr %9, ptr @"[]_llgo_byte", align 8
+  br label %_llgo_6
+
+_llgo_6:                                          ; preds = %_llgo_5, %_llgo_4
+  %10 = load ptr, ptr @_llgo_Pointer, align 8
+  %11 = icmp eq ptr %10, null
+  br i1 %11, label %_llgo_7, label %_llgo_8
+
+_llgo_7:                                          ; preds = %_llgo_6
+  %12 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 58)
+  call void @"github.com/goplus/llgo/internal/runtime.SetDirectIface"(ptr %12)
+  store ptr %12, ptr @_llgo_Pointer, align 8
+  br label %_llgo_8
+
+_llgo_8:                                          ; preds = %_llgo_7, %_llgo_6
+  ret void
+}
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64)
+
+declare { i64, %"github.com/goplus/llgo/internal/runtime.iface" } @fmt.Printf(%"github.com/goplus/llgo/internal/runtime.String", %"github.com/goplus/llgo/internal/runtime.Slice")
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.SliceOf"(ptr)
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.CBytes"(%"github.com/goplus/llgo/internal/runtime.Slice")
+
+declare void @"github.com/goplus/llgo/internal/runtime.SetDirectIface"(ptr)
+
+declare %"github.com/goplus/llgo/internal/runtime.Slice" @"github.com/goplus/llgo/internal/runtime.GoBytes"(ptr, i64)

compiler/cl/_testgo/cgocfiles/cgocfiles.go

@@ -0,0 +1,15 @@
+package main
+
+/*
+#include "in.h"
+*/
+import "C"
+import "fmt"
+
+func main() {
+	r := C.test_structs(&C.s4{a: 1}, &C.s8{a: 1, b: 2}, &C.s12{a: 1, b: 2, c: 3}, &C.s16{a: 1, b: 2, c: 3, d: 4}, &C.s20{a: 1, b: 2, c: 3, d: 4, e: 5})
+	fmt.Println(r)
+	if r != 35 {
+		panic("test_structs failed")
+	}
+}

compiler/cl/_testgo/cgocfiles/in.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+#include "in.h"
+
+int test_structs(s4* s4, s8* s8, s12* s12, s16* s16, s20* s20) {
+  printf("s4.a: %d\n", s4->a);
+  printf("s8.a: %d, s8.b: %d\n", s8->a, s8->b);
+  printf("s12.a: %d, s12.b: %d, s12.c: %d\n", s12->a, s12->b, s12->c);
+  printf("s16.a: %d, s16.b: %d, s16.c: %d, s16.d: %d\n", s16->a, s16->b, s16->c, s16->d);
+  printf("s20.a: %d, s20.b: %d, s20.c: %d, s20.d: %d, s20.e: %d\n", s20->a, s20->b, s20->c, s20->d, s20->e);
+
+  return s4->a + s8->a + s8->b + s12->a + s12->b + s12->c + s16->a + s16->b + s16->c + s16->d + s20->a + s20->b + s20->c + s20->d + s20->e;
+}

compiler/cl/_testgo/cgocfiles/in.h

@@ -0,0 +1,33 @@
+#pragma once
+
+typedef struct {
+	int a;
+} s4;
+
+typedef struct {
+  int a;
+  int b;
+} s8;
+
+typedef struct {
+  int a;
+  int b;
+  int c;
+} s12;
+
+typedef struct {
+  int a;
+  int b;
+  int c;
+  int d;
+} s16;
+
+typedef struct {
+  int a;
+  int b;
+  int c;
+  int d;
+  int e;
+} s20;
+
+extern int test_structs(s4* s4, s8* s8, s12* s12, s16* s16, s20* s20);

compiler/cl/_testgo/cgocfiles/out.ll

@@ -0,0 +1,179 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+%"github.com/goplus/llgo/internal/runtime.eface" = type { ptr, ptr }
+%main._Ctype_struct___3 = type { i32 }
+%main._Ctype_struct___4 = type { i32, i32 }
+%main._Ctype_struct___0 = type { i32, i32, i32 }
+%main._Ctype_struct___1 = type { i32, i32, i32, i32 }
+%main._Ctype_struct___2 = type { i32, i32, i32, i32, i32 }
+%"github.com/goplus/llgo/internal/runtime.Slice" = type { ptr, i64, i64 }
+%"github.com/goplus/llgo/internal/runtime.iface" = type { ptr, ptr }
+%"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
+
+@"github.com/goplus/llgo/internal/runtime.cgoAlwaysFalse" = external global i1, align 1
+@_cgo_35faaf752e93_Cfunc_test_structs = external global i8, align 1
+@main._cgo_35faaf752e93_Cfunc_test_structs = global ptr null, align 8
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+@_llgo_main._Ctype_int = linkonce global ptr null, align 8
+@0 = private unnamed_addr constant [4 x i8] c"main", align 1
+@1 = private unnamed_addr constant [10 x i8] c"_Ctype_int", align 1
+@_llgo_int32 = linkonce global ptr null, align 8
+@2 = private unnamed_addr constant [19 x i8] c"test_structs failed", align 1
+@_llgo_string = linkonce global ptr null, align 8
+
+define i32 @main._Cfunc_test_structs(ptr %0, ptr %1, ptr %2, ptr %3, ptr %4) {
+_llgo_0:
+  %5 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  %6 = load ptr, ptr @main._cgo_35faaf752e93_Cfunc_test_structs, align 8
+  %7 = load ptr, ptr %6, align 8
+  %8 = call i32 %7(ptr %0, ptr %1, ptr %2, ptr %3, ptr %4)
+  ret i32 %8
+}
+
+define ptr @main._Cgo_ptr(ptr %0) {
+_llgo_0:
+  ret ptr %0
+}
+
+declare void @runtime.cgoUse(%"github.com/goplus/llgo/internal/runtime.eface")
+
+declare void @main._cgoCheckResult(%"github.com/goplus/llgo/internal/runtime.eface")
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  call void @syscall.init()
+  call void @fmt.init()
+  call void @"main.init$after"()
+  store ptr @_cgo_35faaf752e93_Cfunc_test_structs, ptr @main._cgo_35faaf752e93_Cfunc_test_structs, align 8
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 4)
+  %3 = getelementptr inbounds %main._Ctype_struct___3, ptr %2, i32 0, i32 0
+  store i32 1, ptr %3, align 4
+  %4 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  %5 = getelementptr inbounds %main._Ctype_struct___4, ptr %4, i32 0, i32 0
+  %6 = getelementptr inbounds %main._Ctype_struct___4, ptr %4, i32 0, i32 1
+  store i32 1, ptr %5, align 4
+  store i32 2, ptr %6, align 4
+  %7 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 12)
+  %8 = getelementptr inbounds %main._Ctype_struct___0, ptr %7, i32 0, i32 0
+  %9 = getelementptr inbounds %main._Ctype_struct___0, ptr %7, i32 0, i32 1
+  %10 = getelementptr inbounds %main._Ctype_struct___0, ptr %7, i32 0, i32 2
+  store i32 1, ptr %8, align 4
+  store i32 2, ptr %9, align 4
+  store i32 3, ptr %10, align 4
+  %11 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 16)
+  %12 = getelementptr inbounds %main._Ctype_struct___1, ptr %11, i32 0, i32 0
+  %13 = getelementptr inbounds %main._Ctype_struct___1, ptr %11, i32 0, i32 1
+  %14 = getelementptr inbounds %main._Ctype_struct___1, ptr %11, i32 0, i32 2
+  %15 = getelementptr inbounds %main._Ctype_struct___1, ptr %11, i32 0, i32 3
+  store i32 1, ptr %12, align 4
+  store i32 2, ptr %13, align 4
+  store i32 3, ptr %14, align 4
+  store i32 4, ptr %15, align 4
+  %16 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 20)
+  %17 = getelementptr inbounds %main._Ctype_struct___2, ptr %16, i32 0, i32 0
+  %18 = getelementptr inbounds %main._Ctype_struct___2, ptr %16, i32 0, i32 1
+  %19 = getelementptr inbounds %main._Ctype_struct___2, ptr %16, i32 0, i32 2
+  %20 = getelementptr inbounds %main._Ctype_struct___2, ptr %16, i32 0, i32 3
+  %21 = getelementptr inbounds %main._Ctype_struct___2, ptr %16, i32 0, i32 4
+  store i32 1, ptr %17, align 4
+  store i32 2, ptr %18, align 4
+  store i32 3, ptr %19, align 4
+  store i32 4, ptr %20, align 4
+  store i32 5, ptr %21, align 4
+  %22 = call i32 @main._Cfunc_test_structs(ptr %2, ptr %4, ptr %7, ptr %11, ptr %16)
+  %23 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 16)
+  %24 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.eface", ptr %23, i64 0
+  %25 = load ptr, ptr @_llgo_main._Ctype_int, align 8
+  %26 = sext i32 %22 to i64
+  %27 = inttoptr i64 %26 to ptr
+  %28 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %25, 0
+  %29 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %28, ptr %27, 1
+  store %"github.com/goplus/llgo/internal/runtime.eface" %29, ptr %24, align 8
+  %30 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" undef, ptr %23, 0
+  %31 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %30, i64 1, 1
+  %32 = insertvalue %"github.com/goplus/llgo/internal/runtime.Slice" %31, i64 1, 2
+  %33 = call { i64, %"github.com/goplus/llgo/internal/runtime.iface" } @fmt.Println(%"github.com/goplus/llgo/internal/runtime.Slice" %32)
+  %34 = icmp ne i32 %22, 35
+  br i1 %34, label %_llgo_1, label %_llgo_2
+
+_llgo_1:                                          ; preds = %_llgo_0
+  %35 = load ptr, ptr @_llgo_string, align 8
+  %36 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 16)
+  store %"github.com/goplus/llgo/internal/runtime.String" { ptr @2, i64 19 }, ptr %36, align 8
+  %37 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" undef, ptr %35, 0
+  %38 = insertvalue %"github.com/goplus/llgo/internal/runtime.eface" %37, ptr %36, 1
+  call void @"github.com/goplus/llgo/internal/runtime.Panic"(%"github.com/goplus/llgo/internal/runtime.eface" %38)
+  unreachable
+
+_llgo_2:                                          ; preds = %_llgo_0
+  ret i32 0
+}
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64)
+
+declare void @syscall.init()
+
+declare void @fmt.init()
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+define void @"main.init$after"() {
+_llgo_0:
+  %0 = call ptr @"github.com/goplus/llgo/internal/runtime.NewNamed"(%"github.com/goplus/llgo/internal/runtime.String" { ptr @0, i64 4 }, %"github.com/goplus/llgo/internal/runtime.String" { ptr @1, i64 10 }, i64 5, i64 4, i64 0, i64 0)
+  store ptr %0, ptr @_llgo_main._Ctype_int, align 8
+  %1 = load ptr, ptr @_llgo_int32, align 8
+  %2 = icmp eq ptr %1, null
+  br i1 %2, label %_llgo_1, label %_llgo_2
+
+_llgo_1:                                          ; preds = %_llgo_0
+  %3 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 37)
+  store ptr %3, ptr @_llgo_int32, align 8
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  %4 = load ptr, ptr @_llgo_int32, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.InitNamed"(ptr %0, ptr %4, { ptr, i64, i64 } zeroinitializer, { ptr, i64, i64 } zeroinitializer)
+  %5 = load ptr, ptr @_llgo_string, align 8
+  %6 = icmp eq ptr %5, null
+  br i1 %6, label %_llgo_3, label %_llgo_4
+
+_llgo_3:                                          ; preds = %_llgo_2
+  %7 = call ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64 24)
+  store ptr %7, ptr @_llgo_string, align 8
+  br label %_llgo_4
+
+_llgo_4:                                          ; preds = %_llgo_3, %_llgo_2
+  ret void
+}
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.NewNamed"(%"github.com/goplus/llgo/internal/runtime.String", %"github.com/goplus/llgo/internal/runtime.String", i64, i64, i64, i64)
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.Basic"(i64)
+
+declare void @"github.com/goplus/llgo/internal/runtime.InitNamed"(ptr, ptr, %"github.com/goplus/llgo/internal/runtime.Slice", %"github.com/goplus/llgo/internal/runtime.Slice")
+
+declare { i64, %"github.com/goplus/llgo/internal/runtime.iface" } @fmt.Println(%"github.com/goplus/llgo/internal/runtime.Slice")
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64)
+
+declare void @"github.com/goplus/llgo/internal/runtime.Panic"(%"github.com/goplus/llgo/internal/runtime.eface")

compiler/cl/_testgo/cgodefer/cgodefer.go

@@ -0,0 +1,11 @@
+package main
+
+/*
+#include <stdlib.h>
+*/
+import "C"
+
+func main() {
+	p := C.malloc(1024)
+	defer C.free(p)
+}

compiler/cl/_testgo/cgodefer/out.ll

@@ -0,0 +1 @@
+;

compiler/cl/_testgo/cgofull/bar.go

@@ -0,0 +1,16 @@
+package main
+
+/*
+#cgo CFLAGS: -DBAR
+#include <stdio.h>
+#include "foo.h"
+static void foo(Foo* f) {
+	printf("foo in bar: %d\n", f->a);
+}
+*/
+import "C"
+
+func Bar(f *C.Foo) {
+	C.print_foo(f)
+	C.foo(f)
+}

compiler/cl/_testgo/cgofull/cgofull.go

@@ -0,0 +1,157 @@
+package main
+
+/*
+#cgo windows,!amd64 CFLAGS: -D_WIN32
+#cgo !windows CFLAGS: -D_POSIX
+#cgo windows,amd64 CFLAGS: -D_WIN64
+#cgo linux,amd64 CFLAGS: -D_LINUX64
+#cgo !windows,amd64 CFLAGS: -D_UNIX64
+#cgo pkg-config: python3-embed
+#include <stdio.h>
+#include <Python.h>
+#include "foo.h"
+typedef struct {
+	int a;
+} s4;
+
+typedef struct {
+  int a;
+  int b;
+} s8;
+
+typedef struct {
+  int a;
+  int b;
+  int c;
+} s12;
+
+typedef struct {
+  int a;
+  int b;
+  int c;
+  int d;
+} s16;
+
+typedef struct {
+  int a;
+  int b;
+  int c;
+  int d;
+  int e;
+} s20;
+
+static int test_structs(s4* s4, s8* s8, s12* s12, s16* s16, s20* s20) {
+  printf("s4.a: %d\n", s4->a);
+  printf("s8.a: %d, s8.b: %d\n", s8->a, s8->b);
+  printf("s12.a: %d, s12.b: %d, s12.c: %d\n", s12->a, s12->b, s12->c);
+  printf("s16.a: %d, s16.b: %d, s16.c: %d, s16.d: %d\n", s16->a, s16->b, s16->c, s16->d);
+  printf("s20.a: %d, s20.b: %d, s20.c: %d, s20.d: %d, s20.e: %d\n", s20->a, s20->b, s20->c, s20->d, s20->e);
+
+  return s4->a + s8->a + s8->b + s12->a + s12->b + s12->c + s16->a + s16->b + s16->c + s16->d + s20->a + s20->b + s20->c + s20->d + s20->e;
+}
+
+static void test_macros() {
+#ifdef FOO
+	printf("FOO is defined\n");
+#endif
+#ifdef BAR
+	printf("BAR is defined\n");
+#endif
+#ifdef _WIN32
+	printf("WIN32 is defined\n");
+#endif
+#ifdef _POSIX
+	printf("POSIX is defined\n");
+#endif
+#ifdef _WIN64
+	printf("WIN64 is defined\n");
+#endif
+#ifdef _LINUX64
+	printf("LINUX64 is defined\n");
+#endif
+#ifdef _UNIX64
+	printf("UNIX64 is defined\n");
+#endif
+}
+
+#define MY_VERSION "1.0.0"
+#define MY_CODE 0x12345678
+
+static void test_void() {
+	printf("test_void\n");
+}
+
+typedef int (*Cb)(int);
+
+extern int go_callback(int);
+
+extern int c_callback(int i);
+
+static void test_callback(Cb cb) {
+	printf("test_callback, cb: %p, go_callback: %p, c_callback: %p\n", cb, go_callback, c_callback);
+	printf("test_callback, *cb: %p, *go_callback: %p, *c_callback: %p\n", *(void**)cb, *(void**)(go_callback), *(void**)(c_callback));
+	printf("cb result: %d\n", cb(123));
+	printf("done\n");
+}
+
+extern int go_callback_not_use_in_go(int);
+
+static void run_callback() {
+	test_callback(c_callback);
+	test_callback(go_callback_not_use_in_go);
+}
+*/
+import "C"
+import (
+	"fmt"
+	"unsafe"
+
+	"github.com/goplus/llgo/compiler/cl/_testgo/cgofull/pymod1"
+	"github.com/goplus/llgo/compiler/cl/_testgo/cgofull/pymod2"
+)
+
+//export go_callback_not_use_in_go
+func go_callback_not_use_in_go(i C.int) C.int {
+	return i + 1
+}
+
+//export go_callback
+func go_callback(i C.int) C.int {
+	return i + 1
+}
+
+func main() {
+	runPy()
+	f := &C.Foo{a: 1}
+	Foo(f)
+	Bar(f)
+	C.test_macros()
+	r := C.test_structs(&C.s4{a: 1}, &C.s8{a: 1, b: 2}, &C.s12{a: 1, b: 2, c: 3}, &C.s16{a: 1, b: 2, c: 3, d: 4}, &C.s20{a: 1, b: 2, c: 3, d: 4, e: 5})
+	fmt.Println(r)
+	if r != 35 {
+		panic("test_structs failed")
+	}
+	fmt.Println(C.MY_VERSION)
+	fmt.Println(int(C.MY_CODE))
+	C.test_void()
+
+	println("call run_callback")
+	C.run_callback()
+
+	// test _Cgo_ptr and _cgoCheckResult
+	println("call with go_callback")
+	C.test_callback((C.Cb)(C.go_callback))
+
+	println("call with c_callback")
+	C.test_callback((C.Cb)(C.c_callback))
+}
+
+func runPy() {
+	Initialize()
+	defer Finalize()
+	Run("print('Hello, Python!')")
+	C.PyObject_Print((*C.PyObject)(unsafe.Pointer(pymod1.Float(1.23))), C.stderr, 0)
+	C.PyObject_Print((*C.PyObject)(unsafe.Pointer(pymod2.Long(123))), C.stdout, 0)
+	// test _Cgo_use
+	C.PyObject_Print((*C.PyObject)(unsafe.Pointer(C.PyComplex_FromDoubles(C.double(1.23), C.double(4.56)))), C.stdout, 0)
+}

compiler/cl/_testgo/cgofull/foo.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+#include "foo.h"
+
+void print_foo(Foo *f)
+{
+	printf("print_foo: %d\n", f->a);
+}
+
+int c_callback(int i)
+{
+	return i + 1;
+}

compiler/cl/_testgo/cgofull/foo.go

@@ -0,0 +1,16 @@
+package main
+
+/*
+#cgo CFLAGS: -DFOO
+#include <stdio.h>
+#include "foo.h"
+static void foo(Foo* f) {
+	printf("foo in bar: %d\n", f->a);
+}
+*/
+import "C"
+
+func Foo(f *C.Foo) {
+	C.print_foo(f)
+	C.foo(f)
+}

compiler/cl/_testgo/cgofull/foo.h

@@ -0,0 +1,7 @@
+#pragma once
+
+typedef struct {
+	int a;
+} Foo;
+
+extern void print_foo(Foo* f);

compiler/cl/_testgo/cgofull/out.ll

@@ -0,0 +1 @@
+;

compiler/cl/_testgo/cgofull/py.go

@@ -0,0 +1,24 @@
+package main
+
+/*
+#cgo pkg-config: python3-embed
+#include <Python.h>
+*/
+import "C"
+import "fmt"
+
+func Initialize() {
+	C.Py_Initialize()
+}
+
+func Finalize() {
+	C.Py_Finalize()
+}
+
+func Run(code string) error {
+	if C.PyRun_SimpleString(C.CString(code)) != 0 {
+		C.PyErr_Print()
+		return fmt.Errorf("failed to run code")
+	}
+	return nil
+}

compiler/cl/_testgo/cgofull/pymod1/pymod1.go

@@ -0,0 +1,11 @@
+package pymod1
+
+/*
+#cgo pkg-config: python3-embed
+#include <Python.h>
+*/
+import "C"
+
+func Float(f float64) *C.PyObject {
+	return C.PyFloat_FromDouble(C.double(f))
+}

compiler/cl/_testgo/cgofull/pymod2/pymod2.go

@@ -0,0 +1,11 @@
+package pymod2
+
+/*
+#cgo pkg-config: python3-embed
+#include <Python.h>
+*/
+import "C"
+
+func Long(l int64) *C.PyObject {
+	return C.PyLong_FromLongLong(C.longlong(l))
+}

compiler/cl/_testgo/cgomacro/cgomacro.go

@@ -0,0 +1,31 @@
+package main
+
+/*
+#cgo pkg-config: python3-embed
+#include <stdio.h>
+#include <Python.h>
+
+void test_stdout() {
+	printf("stdout ptr: %p\n", stdout);
+	fputs("outputs to stdout\n", stdout);
+}
+*/
+import "C"
+import (
+	"unsafe"
+
+	"github.com/goplus/llgo/c"
+)
+
+func main() {
+	C.test_stdout()
+	C.fputs((*C.char)(unsafe.Pointer(c.Str("hello\n"))), C.stdout)
+	C.Py_Initialize()
+	defer C.Py_Finalize()
+	C.PyObject_Print(C.Py_True, C.stdout, 0)
+	C.fputs((*C.char)(unsafe.Pointer(c.Str("\n"))), C.stdout)
+	C.PyObject_Print(C.Py_False, C.stdout, 0)
+	C.fputs((*C.char)(unsafe.Pointer(c.Str("\n"))), C.stdout)
+	C.PyObject_Print(C.Py_None, C.stdout, 0)
+	C.fputs((*C.char)(unsafe.Pointer(c.Str("\n"))), C.stdout)
+}

compiler/cl/_testgo/cgomacro/out.ll

@@ -0,0 +1 @@
+;

compiler/cl/_testgo/cgopython/cgopython.go

@@ -0,0 +1,13 @@
+package main
+
+/*
+#cgo pkg-config: python3-embed
+#include <Python.h>
+*/
+import "C"
+
+func main() {
+	C.Py_Initialize()
+	defer C.Py_Finalize()
+	C.PyRun_SimpleString(C.CString("print('Hello, Python!')"))
+}

compiler/cl/_testgo/cgopython/out.ll

@@ -0,0 +1 @@
+;

compiler/cl/_testgo/chan/in.go

@@ -0,0 +1,19 @@
+package main
+
+func main() {
+	ch := make(chan int, 10)
+	var v any = ch
+	println(ch, len(ch), cap(ch), v)
+	go func() {
+		ch <- 100
+	}()
+	n := <-ch
+	println(n)
+
+	ch2 := make(chan int, 10)
+	go func() {
+		close(ch2)
+	}()
+	n2, ok := <-ch2
+	println(n2, ok)
+}

compiler/cl/_testgo/chan/out.ll

@@ -0,0 +1 @@
+;

compiler/cl/_testgo/closure/in.go

@@ -0,0 +1,15 @@
+package main
+
+type T func(n int)
+
+func main() {
+	var env string = "env"
+	var v1 T = func(i int) {
+		println("func", i)
+	}
+	var v2 T = func(i int) {
+		println("closure", i, env)
+	}
+	v1(100)
+	v2(200)
+}

compiler/cl/_testgo/closure/out.ll

@@ -0,0 +1,88 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+%"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
+%main.T = type { ptr, ptr }
+
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+@0 = private unnamed_addr constant [3 x i8] c"env", align 1
+@1 = private unnamed_addr constant [4 x i8] c"func", align 1
+@2 = private unnamed_addr constant [7 x i8] c"closure", align 1
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 16)
+  store %"github.com/goplus/llgo/internal/runtime.String" { ptr @0, i64 3 }, ptr %2, align 8
+  %3 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 8)
+  %4 = getelementptr inbounds { ptr }, ptr %3, i32 0, i32 0
+  store ptr %2, ptr %4, align 8
+  %5 = insertvalue { ptr, ptr } { ptr @"main.main$2", ptr undef }, ptr %3, 1
+  %6 = alloca %main.T, align 8
+  store { ptr, ptr } %5, ptr %6, align 8
+  %7 = load %main.T, ptr %6, align 8
+  call void @"__llgo_stub.main.main$1"(ptr null, i64 100)
+  %8 = extractvalue %main.T %7, 1
+  %9 = extractvalue %main.T %7, 0
+  call void %9(ptr %8, i64 200)
+  ret i32 0
+}
+
+define void @"main.main$1"(i64 %0) {
+_llgo_0:
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" { ptr @1, i64 4 })
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64 %0)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  ret void
+}
+
+define void @"main.main$2"(ptr %0, i64 %1) {
+_llgo_0:
+  %2 = load { ptr }, ptr %0, align 8
+  %3 = extractvalue { ptr } %2, 0
+  %4 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %3, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" { ptr @2, i64 7 })
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64 %1)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %4)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  ret void
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64)
+
+define linkonce void @"__llgo_stub.main.main$1"(ptr %0, i64 %1) {
+_llgo_0:
+  tail call void @"main.main$1"(i64 %1)
+  ret void
+}
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String")
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64)

compiler/cl/_testgo/closure2/in.go

@@ -0,0 +1,11 @@
+package main
+
+func main() {
+	x := 1
+	f := func(i int) func(int) {
+		return func(i int) {
+			println("closure", i, x)
+		}
+	}
+	f(1)(2)
+}

compiler/cl/_testgo/closure2/out.ll

@@ -0,0 +1,80 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+%"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
+
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+@0 = private unnamed_addr constant [7 x i8] c"closure", align 1
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  store i64 1, ptr %2, align 4
+  %3 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 8)
+  %4 = getelementptr inbounds { ptr }, ptr %3, i32 0, i32 0
+  store ptr %2, ptr %4, align 8
+  %5 = insertvalue { ptr, ptr } { ptr @"main.main$1", ptr undef }, ptr %3, 1
+  %6 = extractvalue { ptr, ptr } %5, 1
+  %7 = extractvalue { ptr, ptr } %5, 0
+  %8 = call { ptr, ptr } %7(ptr %6, i64 1)
+  %9 = extractvalue { ptr, ptr } %8, 1
+  %10 = extractvalue { ptr, ptr } %8, 0
+  call void %10(ptr %9, i64 2)
+  ret i32 0
+}
+
+define { ptr, ptr } @"main.main$1"(ptr %0, i64 %1) {
+_llgo_0:
+  %2 = load { ptr }, ptr %0, align 8
+  %3 = extractvalue { ptr } %2, 0
+  %4 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64 8)
+  %5 = getelementptr inbounds { ptr }, ptr %4, i32 0, i32 0
+  store ptr %3, ptr %5, align 8
+  %6 = insertvalue { ptr, ptr } { ptr @"main.main$1$1", ptr undef }, ptr %4, 1
+  ret { ptr, ptr } %6
+}
+
+define void @"main.main$1$1"(ptr %0, i64 %1) {
+_llgo_0:
+  %2 = load { ptr }, ptr %0, align 8
+  %3 = extractvalue { ptr } %2, 0
+  %4 = load i64, ptr %3, align 4
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" { ptr @0, i64 7 })
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64 %1)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64 %4)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  ret void
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64)
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocU"(i64)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String")
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64)

compiler/cl/_testgo/constconv/in.go

@@ -0,0 +1,9 @@
+package main
+
+func main() {
+	var i64 int64 = 1
+	var u64 uint64 = 1
+	var c int64 = i64 + (1.0 / (1.0 / 10))
+	var d uint64 = u64 + (1.0 / (1.0 / 10))
+	println(u64, i64, c, d)
+}

compiler/cl/_testgo/constconv/out.ll

@@ -0,0 +1,44 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  call void @"github.com/goplus/llgo/internal/runtime.PrintUint"(i64 1)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64 1)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64 11)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintUint"(i64 11)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintUint"(i64)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintInt"(i64)

compiler/cl/_testgo/defer1/in.go

@@ -0,0 +1,18 @@
+package main
+
+func f(s string) bool {
+	return len(s) > 2
+}
+
+func main() {
+	defer func() {
+		println("hi")
+	}()
+	if s := "hello"; f(s) {
+		defer println(s)
+	} else {
+		defer println("world")
+		return
+	}
+	defer println("bye")
+}

compiler/cl/_testgo/defer1/out.ll

@@ -0,0 +1 @@
+;

compiler/cl/_testgo/defer2/in.go

@@ -0,0 +1,15 @@
+package main
+
+func f(s string) bool {
+	return len(s) > 2
+}
+
+func main() {
+	if s := "hello"; f(s) {
+		defer println(s)
+	} else {
+		defer println("world")
+		return
+	}
+	defer println("bye")
+}

compiler/cl/_testgo/defer2/out.ll

@@ -0,0 +1 @@
+;