cl: TestPython; build: PkgLinkExtern

README.md

@@ -8,11 +8,23 @@ llgo - A Go compiler based on LLVM
 [![GoDoc](https://pkg.go.dev/badge/github.com/goplus/llgo.svg)](https://pkg.go.dev/github.com/goplus/llgo)
 [![Language](https://img.shields.io/badge/language-Go+-blue.svg)](https://github.com/goplus/gop)
 
-This is a Go compiler based on LLVM in order to better integrate Go with the C ecosystem. It's a subproject of [the Go+ project](https://github.com/goplus/gop).
+This is a Go compiler based on LLVM in order to better integrate Go with the C ecosystem including Python. It's a subproject of [the Go+ project](https://github.com/goplus/gop).
 
 ## C standard libary support
 
-See [github.com/goplus/llgo/c](https://pkg.go.dev/github.com/goplus/llgo/c).
+```go
+package main
+
+import "github.com/goplus/llgo/c"
+
+func main() {
+	c.Printf(c.Str("Hello world\n"))
+}
+```
+
+This is a simple example of calling the C `printf` function to print `Hello world`. Here, `c.Str` is not a function for converting a Go string to a C string, but a built-in instruction supported by llgo for generating a C string constant.
+
+See [github.com/goplus/llgo/c](https://pkg.go.dev/github.com/goplus/llgo/c) for more detials.
 
 
 ## Python support

cl/compile.go

@@ -486,7 +486,7 @@ func isPhi(i ssa.Instruction) bool {
 
 func (p *context) compilePhis(b llssa.Builder, block *ssa.BasicBlock) int {
 	ret := p.fn.Block(block.Index)
-	b.SetBlock(ret)
+	b.SetBlockEx(ret, llssa.AtEnd)
 	if ninstr := len(block.Instrs); ninstr > 0 {
 		if isPhi(block.Instrs[0]) {
 			n := 1

cl/compile_test.go

@@ -52,6 +52,10 @@ func TestFromTestpymath(t *testing.T) {
 	cltest.Pkg(t, ssa.PkgPython+"/math", "../py/math/llgo_autogen.ll")
 }
 
+func TestPython(t *testing.T) {
+	cltest.Pkg(t, ssa.PkgPython, "../py/llgo_autogen.ll")
+}
+
 func TestRuntime(t *testing.T) {
 	cltest.Pkg(t, ssa.PkgRuntime, "../internal/runtime/llgo_autogen.ll")
 }

internal/build/build.go

@@ -195,23 +195,26 @@ func buildAllPkgs(prog llssa.Program, initial []*packages.Package, mode Mode, ve
 			// skip packages that only contain declarations
 			// and set no export file
 			pkg.ExportFile = ""
-		case cl.PkgLinkIR, cl.PkgPyModule:
+		case cl.PkgLinkIR, cl.PkgLinkExtern, cl.PkgPyModule:
-			// skip packages that don't need to be compiled but need to be linked
 			pkgPath := pkg.PkgPath
 			if isPkgInLLGo(pkgPath) {
 				pkg.ExportFile = concatPkgLinkFiles(pkgPath)
 			} else {
 				panic("todo")
 			}
-		case cl.PkgLinkExtern:
+			if kind == cl.PkgLinkExtern { // need to be linked with external library
-			// skip packages that don't need to be compiled but need to be linked with external library
 				linkFile := os.ExpandEnv(strings.TrimSpace(param))
 				dir, lib := filepath.Split(linkFile)
 				command := " -l " + lib
 				if dir != "" {
 					command += " -L " + dir
 				}
-			pkg.ExportFile = command
+				if isMultiLinkFiles(pkg.ExportFile) {
+					pkg.ExportFile = command + pkg.ExportFile
+				} else {
+					pkg.ExportFile = command + " " + pkg.ExportFile
+				}
+			}
 		default:
 			buildPkg(prog, aPkg, mode, verbose)
 			setNeedRuntimeOrPyInit(pkg, prog.NeedRuntime(), prog.NeedPyInit())

internal/pyimport/pyimport.go

@@ -1,38 +0,0 @@
-/*
- * 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 pyimport
-
-import (
-	_ "unsafe"
-
-	"github.com/goplus/llgo/c"
-	"github.com/goplus/llgo/py"
-)
-
-const (
-	LLGoPackage = "decl"
-)
-
-/*
-func init() {
-	py.Initialize()
-	py.SetProgramName(*c.Argv)
-}
-*/
-
-//go:linkname Module C.PyImport_ImportModule
-func Module(name *c.Char) *py.Module

py/_demo/clpy/cleval.go

@@ -11,7 +11,7 @@ func main() {
 	code := py.CompileString(c.Str(`print('Hello, World!')`), c.Str(`hello.py`), py.EvalInput)
 	if code != nil {
 		mod := py.ImportModule(c.Str("__main__"))
-		gbl := mod.GetDict()
+		gbl := mod.ModuleGetDict()
 
 		result := py.EvalCode(code, gbl, nil)
 

py/module.go

@@ -22,18 +22,13 @@ import (
 	"github.com/goplus/llgo/c"
 )
 
-// Module represents a Python module object.
-type Module struct {
-	Object
-}
-
 // -----------------------------------------------------------------------------
 
 // This is a wrapper around py.Import which takes a const char* as an argument
 // instead of an Object.
 //
 //go:linkname ImportModule C.PyImport_ImportModule
-func ImportModule(name *c.Char) *Module
+func ImportModule(name *c.Char) *Object
 
 // This is a higher-level interface that calls the current “import hook function” (with
 // an explicit level of 0, meaning absolute import). It invokes the __import__() function
@@ -43,7 +38,7 @@ func ImportModule(name *c.Char) *Module
 // This function always uses absolute imports.
 //
 //go:linkname Import C.PyImport_Import
-func Import(name *Object) *Module
+func Import(name *Object) *Object
 
 // Return the dictionary object that implements module’s namespace; this object is the same
 // as the __dict__ attribute of the module object. If module is not a module object (or a
@@ -52,7 +47,7 @@ func Import(name *Object) *Module
 // It is recommended extensions use other Module and Object functions rather than directly
 // manipulate a module’s __dict__.
 //
-// llgo:link (*Module).GetDict C.PyModule_GetDict
+// llgo:link (*Object).ModuleGetDict C.PyModule_GetDict
-func (m *Module) GetDict() *Object { return nil }
+func (m *Object) ModuleGetDict() *Object { return nil }
 
 // -----------------------------------------------------------------------------

py/object.go

@@ -128,7 +128,7 @@ func (o *Object) CallFunctionObjArgs(__llgo_va_list ...any) *Object { return nil
 
 // llgo:link (*Object).CallMethod C.PyObject_CallMethod
 func (o *Object) CallMethod(name *c.Char, format *c.Char, __llgo_va_list ...any) *Object {
-	panic("unreachable")
+	return nil
 }
 
 // llgo:link (*Object).CallMethodObjArgs C.PyObject_CallMethodObjArgs