792 lines
22 KiB
Go
792 lines
22 KiB
Go
package ssa
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import (
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"debug/dwarf"
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"fmt"
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"go/token"
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"go/types"
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"path/filepath"
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"unsafe"
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"github.com/goplus/llvm"
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)
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type Positioner interface {
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Position(pos token.Pos) token.Position
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}
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type aDIBuilder struct {
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di *llvm.DIBuilder
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prog Program
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types map[Type]DIType
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positioner Positioner
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m llvm.Module // Add this field
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}
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type diBuilder = *aDIBuilder
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func newDIBuilder(prog Program, pkg Package, positioner Positioner) diBuilder {
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m := pkg.mod
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ctx := m.Context()
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b := &aDIBuilder{
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di: llvm.NewDIBuilder(m),
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prog: prog,
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types: make(map[*aType]DIType),
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positioner: positioner,
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m: m, // Initialize the m field
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}
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b.addNamedMetadataOperand("llvm.module.flags", 2, "Debug Info Version", 3)
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b.addNamedMetadataOperand("llvm.module.flags", 7, "Dwarf Version", 4)
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b.addNamedMetadataOperand("llvm.module.flags", 1, "wchar_size", 4)
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b.addNamedMetadataOperand("llvm.module.flags", 8, "PIC Level", 2)
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b.addNamedMetadataOperand("llvm.module.flags", 7, "uwtable", 1)
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b.addNamedMetadataOperand("llvm.module.flags", 7, "frame-pointer", 1)
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// Add llvm.ident metadata
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identNode := ctx.MDNode([]llvm.Metadata{
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ctx.MDString("LLGo Compiler"),
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})
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m.AddNamedMetadataOperand("llvm.ident", identNode)
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return b
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}
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// New method to add named metadata operand
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func (b diBuilder) addNamedMetadataOperand(name string, intValue int, stringValue string, intValue2 int) {
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ctx := b.m.Context()
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b.m.AddNamedMetadataOperand(name,
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ctx.MDNode([]llvm.Metadata{
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llvm.ConstInt(ctx.Int32Type(), uint64(intValue), false).ConstantAsMetadata(),
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ctx.MDString(stringValue),
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llvm.ConstInt(ctx.Int32Type(), uint64(intValue2), false).ConstantAsMetadata(),
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}),
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)
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}
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// ----------------------------------------------------------------------------
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type aCompilationUnit struct {
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ll llvm.Metadata
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}
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type CompilationUnit = *aCompilationUnit
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func (c CompilationUnit) scopeMeta(b diBuilder, pos token.Position) DIScopeMeta {
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return &aDIScopeMeta{c.ll}
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}
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var DWARF_LANG_C llvm.DwarfLang = 0x2
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var DWARF_LANG_GO llvm.DwarfLang = 0x16
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func (b diBuilder) createCompileUnit(filename, dir string) CompilationUnit {
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return &aCompilationUnit{ll: b.di.CreateCompileUnit(llvm.DICompileUnit{
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// TODO(lijie): use C language for now, change after Go plugin of LLDB is ready
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Language: DWARF_LANG_C - 1,
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File: filename,
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Dir: dir,
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Producer: "LLGo",
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Optimized: true,
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RuntimeVersion: 1,
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})}
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}
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// ----------------------------------------------------------------------------
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type aDIScopeMeta struct {
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ll llvm.Metadata
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}
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type DIScopeMeta = *aDIScopeMeta
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type DIScope interface {
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scopeMeta(b diBuilder, pos token.Position) DIScopeMeta
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}
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// ----------------------------------------------------------------------------
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type aDIFile struct {
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ll llvm.Metadata
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}
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type DIFile = *aDIFile
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func (b diBuilder) createFile(filename string) DIFile {
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dir, file := filepath.Split(filename)
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return &aDIFile{ll: b.di.CreateFile(file, dir)}
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}
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func (f DIFile) scopeMeta(b diBuilder, pos token.Position) DIScopeMeta {
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return &aDIScopeMeta{b.file(pos.Filename).ll}
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}
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// ----------------------------------------------------------------------------
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type aDIType struct {
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ll llvm.Metadata
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}
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type DIType = *aDIType
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func (b diBuilder) createType(name string, ty Type, pos token.Position) DIType {
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var typ llvm.Metadata
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switch t := ty.RawType().(type) {
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case *types.Basic:
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if t.Kind() == types.UnsafePointer {
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typ = b.di.CreatePointerType(llvm.DIPointerType{
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Name: name,
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SizeInBits: b.prog.SizeOf(b.prog.rawType(t)) * 8,
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AlignInBits: uint32(b.prog.sizes.Alignof(t) * 8),
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})
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return &aDIType{typ}
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}
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var encoding llvm.DwarfTypeEncoding
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if t.Info()&types.IsBoolean != 0 {
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encoding = llvm.DW_ATE_boolean
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} else if t.Info()&types.IsUnsigned != 0 {
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encoding = llvm.DW_ATE_unsigned
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} else if t.Info()&types.IsInteger != 0 {
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encoding = llvm.DW_ATE_signed
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} else if t.Info()&types.IsFloat != 0 {
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encoding = llvm.DW_ATE_float
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} else if t.Info()&types.IsComplex != 0 {
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return b.createComplexType(ty)
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} else if t.Info()&types.IsString != 0 {
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return b.createStringType()
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} else {
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panic(fmt.Errorf("can't create debug info of basic type: %v, %T", ty.RawType(), ty.RawType()))
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}
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typ = b.di.CreateBasicType(llvm.DIBasicType{
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Name: name,
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SizeInBits: b.prog.SizeOf(b.prog.rawType(t)) * 8,
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Encoding: encoding,
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})
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case *types.Pointer:
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return b.createPointerType(name, b.prog.rawType(t.Elem()), pos)
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case *types.Named:
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// Create typedef type for named types
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return b.createTypedefType(name, ty, pos)
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case *types.Interface:
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ty := b.prog.rtType("Iface")
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return b.createInterfaceType(name, ty)
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case *types.Slice:
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ty := b.prog.rtType("Slice")
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tyElem := b.prog.rawType(t.Elem())
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return b.createSliceType(name, ty, tyElem)
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case *types.Struct:
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return b.createStructType(name, ty, pos)
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case *types.Signature:
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tyFn := b.prog.Closure(ty)
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return b.createFuncPtrType(name, tyFn, pos)
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case *types.Array:
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return b.createArrayType(ty, t.Len())
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case *types.Chan:
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return b.createChanType(name, ty, pos)
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case *types.Map:
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ty := b.prog.rtType("Map")
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return b.createMapType(name, ty, pos)
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case *types.Tuple:
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return b.createTupleType(name, ty, pos)
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default:
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panic(fmt.Errorf("can't create debug info of type: %v, %T", ty.RawType(), ty.RawType()))
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}
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return &aDIType{typ}
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}
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// ----------------------------------------------------------------------------
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type aDIFunction struct {
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ll llvm.Metadata
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}
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type DIFunction = *aDIFunction
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func (p Function) scopeMeta(b diBuilder, pos token.Position) DIScopeMeta {
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return &aDIScopeMeta{p.diFunc.ll}
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}
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// ----------------------------------------------------------------------------
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type aDIGlobalVariableExpression struct {
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ll llvm.Metadata
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}
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type DIGlobalVariableExpression = *aDIGlobalVariableExpression
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func (b diBuilder) createGlobalVariableExpression(scope DIScope, pos token.Position, name, linkageName string, ty Type, isLocalToUnit bool) DIGlobalVariableExpression {
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return &aDIGlobalVariableExpression{
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ll: b.di.CreateGlobalVariableExpression(
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scope.scopeMeta(b, pos).ll,
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llvm.DIGlobalVariableExpression{
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Name: name,
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LinkageName: linkageName,
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File: b.file(pos.Filename).ll,
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Line: pos.Line,
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Type: b.diType(ty, pos).ll,
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LocalToUnit: isLocalToUnit,
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AlignInBits: uint32(b.prog.sizes.Alignof(ty.RawType()) * 8),
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},
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),
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}
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}
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// ----------------------------------------------------------------------------
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type aDILexicalBlock struct {
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ll llvm.Metadata
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}
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type DILexicalBlock = *aDILexicalBlock
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func (l *aDILexicalBlock) scopeMeta(b diBuilder, pos token.Position) DIScopeMeta {
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return &aDIScopeMeta{l.ll}
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}
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// ----------------------------------------------------------------------------
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type aDIVar struct {
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ll llvm.Metadata
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}
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type DIVar = *aDIVar
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func (b diBuilder) createParameterVariable(scope DIScope, pos token.Position, name string, argNo int, ty DIType) DIVar {
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return &aDIVar{
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ll: b.di.CreateParameterVariable(
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scope.scopeMeta(b, pos).ll,
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llvm.DIParameterVariable{
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Name: name,
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File: b.file(pos.Filename).ll,
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Line: pos.Line,
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ArgNo: argNo,
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Type: ty.ll,
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AlwaysPreserve: true,
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},
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),
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}
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}
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func (b diBuilder) createAutoVariable(scope DIScope, pos token.Position, name string, ty DIType) DIVar {
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return &aDIVar{
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ll: b.di.CreateAutoVariable(
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scope.scopeMeta(b, pos).ll,
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llvm.DIAutoVariable{
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Name: name,
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File: b.file(pos.Filename).ll,
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Line: pos.Line,
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Type: ty.ll,
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AlwaysPreserve: true,
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},
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),
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}
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}
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func (b diBuilder) createTypedefType(name string, ty Type, pos token.Position) DIType {
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underlyingType := b.diType(b.prog.rawType(ty.RawType().(*types.Named).Underlying()), pos)
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typ := b.di.CreateTypedef(llvm.DITypedef{
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Name: name,
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Type: underlyingType.ll,
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File: b.file(pos.Filename).ll,
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Line: pos.Line,
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AlignInBits: uint32(b.prog.sizes.Alignof(ty.RawType()) * 8),
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})
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return &aDIType{typ}
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}
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func (b diBuilder) createStringType() DIType {
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ty := b.prog.rtType("String")
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return b.doCreateStructType("string", ty, token.Position{}, func(ditStruct DIType) []llvm.Metadata {
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return []llvm.Metadata{
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b.createMemberType("data", ty, b.prog.CStr(), 0),
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b.createMemberType("len", ty, b.prog.Uint(), 1),
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}
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})
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}
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func (b diBuilder) createArrayType(ty Type, l int64) DIType {
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tyElem := b.prog.rawType(ty.RawType().(*types.Array).Elem())
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return &aDIType{ll: b.di.CreateArrayType(llvm.DIArrayType{
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SizeInBits: b.prog.SizeOf(ty) * 8,
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AlignInBits: uint32(b.prog.sizes.Alignof(ty.RawType()) * 8),
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ElementType: b.diType(tyElem, token.Position{}).ll,
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Subscripts: []llvm.DISubrange{{
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Count: l,
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}},
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})}
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}
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func (b diBuilder) createSliceType(name string, ty, tyElem Type) DIType {
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pos := token.Position{}
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diElemTyPtr := b.prog.Pointer(tyElem)
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return b.doCreateStructType(name, ty, pos, func(ditStruct DIType) []llvm.Metadata {
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return []llvm.Metadata{
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b.createMemberTypeEx("data", ty, diElemTyPtr, 0, pos, 0),
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b.createMemberTypeEx("len", ty, b.prog.Uint(), 1, pos, 0),
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b.createMemberTypeEx("cap", ty, b.prog.Uint(), 2, pos, 0),
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}
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})
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}
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func (b diBuilder) createInterfaceType(name string, ty Type) DIType {
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tyRaw := ty.RawType().Underlying()
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tyIntr := b.prog.rawType(tyRaw)
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tyType := b.prog.VoidPtr()
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tyData := b.prog.VoidPtr()
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return b.doCreateStructType(name, tyIntr, token.Position{}, func(ditStruct DIType) []llvm.Metadata {
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return []llvm.Metadata{
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b.createMemberType("type", ty, tyType, 0),
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b.createMemberType("data", ty, tyData, 1),
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}
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})
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}
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func (b diBuilder) createMemberType(name string, tyStruct, tyField Type, idxField int) llvm.Metadata {
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return b.createMemberTypeEx(name, tyStruct, tyField, idxField, token.Position{}, 0)
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}
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func (b diBuilder) createMemberTypeEx(name string, tyStruct, tyField Type, idxField int, pos token.Position, flags int) llvm.Metadata {
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return b.di.CreateMemberType(
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b.diType(tyStruct, pos).ll,
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llvm.DIMemberType{
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Name: name,
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SizeInBits: b.prog.SizeOf(tyField) * 8,
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AlignInBits: uint32(b.prog.sizes.Alignof(tyField.RawType()) * 8),
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OffsetInBits: b.prog.OffsetOf(tyStruct, idxField) * 8,
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Type: b.diType(tyField, pos).ll,
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Flags: flags,
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},
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)
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}
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func (b diBuilder) createMapType(name string, tyMap Type, pos token.Position) DIType {
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// ty := tyMap.RawType().(*types.Map)
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// tk := b.prog.rawType(ty.Key())
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// tv := b.prog.rawType(ty.Elem())
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tyCount := b.prog.Int()
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return b.doCreateStructType(name, tyMap, pos, func(ditStruct DIType) []llvm.Metadata {
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return []llvm.Metadata{
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b.createMemberType("count", tyMap, tyCount, 0),
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}
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})
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}
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func (b diBuilder) createChanType(name string, t Type, pos token.Position) DIType {
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return b.doCreateStructType(name, t, pos, func(ditStruct DIType) []llvm.Metadata {
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return []llvm.Metadata{}
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})
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}
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func (b diBuilder) createComplexType(t Type) DIType {
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var tfield Type
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var tyName string
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if t.RawType().(*types.Basic).Kind() == types.Complex128 {
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tfield = b.prog.Float64()
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tyName = "complex128"
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} else {
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tfield = b.prog.Float32()
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tyName = "complex64"
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}
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return b.doCreateStructType(tyName, t, token.Position{}, func(ditStruct DIType) []llvm.Metadata {
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return []llvm.Metadata{
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b.createMemberType("real", t, tfield, 0),
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b.createMemberType("imag", t, tfield, 1),
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}
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})
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}
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func (b diBuilder) createPointerType(name string, ty Type, pos token.Position) DIType {
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ptrType := b.prog.VoidPtr()
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return &aDIType{ll: b.di.CreatePointerType(llvm.DIPointerType{
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Name: name,
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Pointee: b.diType(ty, pos).ll,
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SizeInBits: b.prog.SizeOf(ptrType) * 8,
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AlignInBits: uint32(b.prog.sizes.Alignof(ptrType.RawType())) * 8,
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})}
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}
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func (b diBuilder) doCreateStructType(name string, ty Type, pos token.Position, fn func(ty DIType) []llvm.Metadata) (ret DIType) {
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structType := ty.RawType().Underlying()
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scope := b.file(pos.Filename)
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ret = &aDIType{b.di.CreateReplaceableCompositeType(
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scope.ll,
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llvm.DIReplaceableCompositeType{
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Tag: dwarf.TagStructType,
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Name: name,
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File: b.file(pos.Filename).ll,
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Line: pos.Line,
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SizeInBits: b.prog.SizeOf(ty) * 8,
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AlignInBits: uint32(b.prog.sizes.Alignof(structType) * 8),
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},
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)}
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b.types[ty] = ret
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fields := fn(ret)
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st := b.di.CreateStructType(
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scope.ll,
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llvm.DIStructType{
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Name: name,
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File: b.file(pos.Filename).ll,
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Line: pos.Line,
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SizeInBits: b.prog.SizeOf(ty) * 8,
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AlignInBits: uint32(b.prog.sizes.Alignof(structType) * 8),
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Elements: fields,
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},
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)
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ret.ll.ReplaceAllUsesWith(st)
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ret.ll = st
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return
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}
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func (b diBuilder) createStructType(name string, ty Type, pos token.Position) (ret DIType) {
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structType := ty.RawType().(*types.Struct)
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return b.doCreateStructType(name, ty, pos, func(ditStruct DIType) []llvm.Metadata {
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fields := make([]llvm.Metadata, structType.NumFields())
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for i := 0; i < structType.NumFields(); i++ {
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field := structType.Field(i)
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tyField := b.prog.rawType(field.Type())
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flags := 0
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pos := b.positioner.Position(field.Pos())
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fields[i] = b.createMemberTypeEx(field.Name(), ty, tyField, i, pos, flags)
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}
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return fields
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})
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}
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func (b diBuilder) createTupleType(name string, ty Type, pos token.Position) DIType {
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tupleType := ty.RawType().(*types.Tuple)
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if tupleType.Len() == 0 {
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return &aDIType{}
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}
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if tupleType.Len() == 1 {
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t := b.prog.rawType(tupleType.At(0).Type())
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return b.diType(t, pos)
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}
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return b.doCreateStructType(name, ty, pos, func(ditStruct DIType) []llvm.Metadata {
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fields := make([]llvm.Metadata, ty.RawType().(*types.Tuple).Len())
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for i := 0; i < ty.RawType().(*types.Tuple).Len(); i++ {
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field := ty.RawType().(*types.Tuple).At(i)
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tyField := b.prog.rawType(field.Type())
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fields[i] = b.createMemberTypeEx(field.Name(), ty, tyField, i, pos, 0)
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}
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return fields
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})
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}
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func (b diBuilder) createFuncPtrType(name string, ty Type, pos token.Position) DIType {
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ptr := b.prog.VoidPtr()
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return &aDIType{ll: b.di.CreatePointerType(llvm.DIPointerType{
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Name: name,
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Pointee: b.diType(ptr, pos).ll,
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SizeInBits: b.prog.SizeOf(ptr) * 8,
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AlignInBits: uint32(b.prog.sizes.Alignof(ptr.RawType()) * 8),
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})}
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}
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// ----------------------------------------------------------------------------
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func (b diBuilder) dbgDeclare(v Expr, dv DIVar, scope DIScope, pos token.Position, expr DIExpression, blk BasicBlock) {
|
|
loc := llvm.DebugLoc{
|
|
Line: uint(pos.Line),
|
|
Col: uint(pos.Column),
|
|
Scope: scope.scopeMeta(b, pos).ll,
|
|
}
|
|
b.di.InsertDeclareAtEnd(
|
|
v.impl,
|
|
dv.ll,
|
|
expr.ll,
|
|
loc,
|
|
blk.last,
|
|
)
|
|
}
|
|
|
|
func (b diBuilder) dbgValue(v Expr, dv DIVar, scope DIScope, pos token.Position, expr DIExpression, blk BasicBlock) {
|
|
loc := llvm.DebugLoc{
|
|
Line: uint(pos.Line),
|
|
Col: uint(pos.Column),
|
|
Scope: scope.scopeMeta(b, pos).ll,
|
|
}
|
|
b.di.InsertValueAtEnd(
|
|
v.impl,
|
|
dv.ll,
|
|
expr.ll,
|
|
loc,
|
|
blk.last,
|
|
)
|
|
}
|
|
|
|
func (b diBuilder) diType(t Type, pos token.Position) DIType {
|
|
name := t.RawType().String()
|
|
return b.diTypeEx(name, t, pos)
|
|
}
|
|
|
|
func (b diBuilder) diTypeEx(name string, t Type, pos token.Position) DIType {
|
|
if ty, ok := b.types[t]; ok {
|
|
return ty
|
|
}
|
|
ty := b.createType(name, t, pos)
|
|
b.types[t] = ty
|
|
return ty
|
|
}
|
|
|
|
func (b diBuilder) varParam(scope DIScope, pos token.Position, varName string, vt DIType, argNo int) DIVar {
|
|
return b.createParameterVariable(
|
|
scope,
|
|
pos,
|
|
varName,
|
|
argNo,
|
|
vt,
|
|
)
|
|
}
|
|
|
|
func (b diBuilder) varAuto(scope DIScope, pos token.Position, varName string, vt DIType) DIVar {
|
|
return b.createAutoVariable(scope, pos, varName, vt)
|
|
}
|
|
|
|
func (b diBuilder) file(filename string) DIFile {
|
|
return b.createFile(filename)
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
type aDIExpression struct {
|
|
ll llvm.Metadata
|
|
}
|
|
|
|
type DIExpression = *aDIExpression
|
|
|
|
func (b diBuilder) createExpression(ops []uint64) DIExpression {
|
|
return &aDIExpression{b.di.CreateExpression(ops)}
|
|
}
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// Copy to alloca'd memory to get declareable address.
|
|
func (b Builder) constructDebugAddr(v Expr) (dbgPtr Expr, dbgVal Expr, exists bool) {
|
|
if v, ok := b.dbgVars[v]; ok {
|
|
return v.ptr, v.val, true
|
|
}
|
|
t := v.Type.RawType().Underlying()
|
|
dbgPtr, dbgVal = b.doConstructDebugAddr(v, t)
|
|
dbgExpr := dbgExpr{dbgPtr, dbgVal}
|
|
b.dbgVars[v] = dbgExpr
|
|
b.dbgVars[dbgVal] = dbgExpr
|
|
return dbgPtr, dbgVal, false
|
|
}
|
|
|
|
func (b Builder) doConstructDebugAddr(v Expr, t types.Type) (dbgPtr Expr, dbgVal Expr) {
|
|
var ty Type
|
|
switch t := t.(type) {
|
|
case *types.Basic:
|
|
if t.Info()&types.IsComplex != 0 {
|
|
if t.Kind() == types.Complex128 {
|
|
ty = b.Prog.Complex128()
|
|
} else {
|
|
ty = b.Prog.Complex64()
|
|
}
|
|
} else if t.Info()&types.IsString != 0 {
|
|
ty = b.Prog.rtType("String")
|
|
} else {
|
|
ty = v.Type
|
|
}
|
|
case *types.Struct:
|
|
ty = v.Type
|
|
case *types.Slice:
|
|
ty = b.Prog.Type(b.Prog.rtType("Slice").RawType().Underlying(), InGo)
|
|
case *types.Signature:
|
|
ty = b.Prog.Closure(b.Prog.rawType(t))
|
|
case *types.Named:
|
|
ty = b.Prog.Type(t.Underlying(), InGo)
|
|
case *types.Map:
|
|
ty = b.Prog.Type(b.Prog.rtType("Map").RawType().Underlying(), InGo)
|
|
default:
|
|
ty = v.Type
|
|
}
|
|
dbgPtr = b.AllocaT(ty)
|
|
dbgPtr.Type = b.Prog.Pointer(v.Type)
|
|
b.Store(dbgPtr, v)
|
|
dbgVal = b.Load(dbgPtr)
|
|
return dbgPtr, dbgVal
|
|
}
|
|
|
|
func (b Builder) di() diBuilder {
|
|
return b.Pkg.di
|
|
}
|
|
|
|
func (b Builder) DIParam(variable *types.Var, v Expr, dv DIVar, scope DIScope, pos token.Position, blk BasicBlock) {
|
|
b.DIValue(variable, v, dv, scope, pos, blk)
|
|
}
|
|
|
|
func (b Builder) DIDeclare(variable *types.Var, v Expr, dv DIVar, scope DIScope, pos token.Position, blk BasicBlock) {
|
|
expr := b.di().createExpression(nil)
|
|
b.di().dbgDeclare(v, dv, scope, pos, expr, blk)
|
|
}
|
|
|
|
func (b Builder) DIValue(variable *types.Var, v Expr, dv DIVar, scope DIScope, pos token.Position, blk BasicBlock) {
|
|
ty := v.Type.RawType().Underlying()
|
|
if !needConstructAddr(ty) {
|
|
expr := b.di().createExpression(nil)
|
|
b.di().dbgValue(v, dv, scope, pos, expr, blk)
|
|
} else {
|
|
dbgPtr, _, _ := b.constructDebugAddr(v)
|
|
expr := b.di().createExpression([]uint64{opDeref})
|
|
b.di().dbgValue(dbgPtr, dv, scope, pos, expr, blk)
|
|
}
|
|
}
|
|
|
|
const (
|
|
opDeref = 0x06
|
|
)
|
|
|
|
func needConstructAddr(t types.Type) bool {
|
|
switch t := t.(type) {
|
|
case *types.Basic:
|
|
if t.Info()&types.IsComplex != 0 {
|
|
return true
|
|
} else if t.Info()&types.IsString != 0 {
|
|
return true
|
|
}
|
|
return false
|
|
case *types.Pointer:
|
|
return false
|
|
default:
|
|
return true
|
|
}
|
|
}
|
|
|
|
func (b Builder) DIVarParam(scope DIScope, pos token.Position, varName string, vt Type, argNo int) DIVar {
|
|
t := b.di().diType(vt, pos)
|
|
return b.di().varParam(scope, pos, varName, t, argNo)
|
|
}
|
|
|
|
func (b Builder) DIVarAuto(scope DIScope, pos token.Position, varName string, vt Type) DIVar {
|
|
t := b.di().diType(vt, pos)
|
|
return b.di().varAuto(scope, pos, varName, t)
|
|
}
|
|
|
|
// hack for types.Scope
|
|
type hackScope struct {
|
|
parent *types.Scope
|
|
children []*types.Scope
|
|
number int // parent.children[number-1] is this scope; 0 if there is no parent
|
|
elems map[string]types.Object // lazily allocated
|
|
pos, end token.Pos // scope extent; may be invalid
|
|
comment string // for debugging only
|
|
isFunc bool // set if this is a function scope (internal use only)
|
|
}
|
|
|
|
func isFunc(scope *types.Scope) bool {
|
|
hs := (*hackScope)(unsafe.Pointer(scope))
|
|
return hs.isFunc
|
|
}
|
|
|
|
func (b Builder) DIScope(f Function, scope *types.Scope) DIScope {
|
|
if cachedScope, ok := b.diScopeCache[scope]; ok {
|
|
return cachedScope
|
|
}
|
|
pos := b.di().positioner.Position(scope.Pos())
|
|
// skip package and universe scope
|
|
// if scope.Parent().Parent() == nil {
|
|
// return b.di().file(pos.Filename)
|
|
// }
|
|
|
|
var result DIScope
|
|
if isFunc(scope) {
|
|
// TODO(lijie): should check scope == function scope
|
|
result = f
|
|
} else {
|
|
parentScope := b.DIScope(f, scope.Parent())
|
|
result = &aDILexicalBlock{b.di().di.CreateLexicalBlock(parentScope.scopeMeta(b.di(), pos).ll, llvm.DILexicalBlock{
|
|
File: b.di().file(pos.Filename).ll,
|
|
Line: pos.Line,
|
|
Column: pos.Column,
|
|
})}
|
|
}
|
|
|
|
b.diScopeCache[scope] = result
|
|
return result
|
|
}
|
|
|
|
const (
|
|
MD_dbg = 0
|
|
)
|
|
|
|
func (b Builder) DIGlobal(v Expr, name string, pos token.Position) {
|
|
if _, ok := b.Pkg.glbDbgVars[v]; ok {
|
|
return
|
|
}
|
|
gv := b.di().createGlobalVariableExpression(
|
|
b.Pkg.cu,
|
|
pos,
|
|
name,
|
|
name,
|
|
v.Type,
|
|
false,
|
|
)
|
|
v.impl.AddMetadata(MD_dbg, gv.ll)
|
|
b.Pkg.glbDbgVars[v] = true
|
|
}
|
|
|
|
func (b Builder) DISetCurrentDebugLocation(diScope DIScope, pos token.Position) {
|
|
b.impl.SetCurrentDebugLocation(
|
|
uint(pos.Line),
|
|
uint(pos.Column),
|
|
diScope.scopeMeta(b.di(), pos).ll,
|
|
llvm.Metadata{},
|
|
)
|
|
}
|
|
|
|
func (b Builder) DebugFunction(f Function, pos token.Position, bodyPos token.Position) {
|
|
p := f
|
|
if p.diFunc == nil {
|
|
sig := p.Type.raw.Type.(*types.Signature)
|
|
rt := p.Prog.Type(sig.Results(), InGo)
|
|
paramTypes := make([]llvm.Metadata, len(p.params)+1)
|
|
paramTypes[0] = b.di().diType(rt, pos).ll
|
|
for i, t := range p.params {
|
|
paramTypes[i+1] = b.di().diType(t, pos).ll
|
|
}
|
|
diFuncType := b.di().di.CreateSubroutineType(llvm.DISubroutineType{
|
|
File: b.di().file(pos.Filename).ll,
|
|
Parameters: paramTypes,
|
|
})
|
|
dif := llvm.DIFunction{
|
|
Type: diFuncType,
|
|
Name: p.Name(),
|
|
LinkageName: p.Name(),
|
|
File: b.di().file(pos.Filename).ll,
|
|
Line: pos.Line,
|
|
ScopeLine: bodyPos.Line,
|
|
IsDefinition: true,
|
|
LocalToUnit: true,
|
|
Optimized: true,
|
|
}
|
|
p.diFunc = &aDIFunction{
|
|
b.di().di.CreateFunction(b.di().file(pos.Filename).ll, dif),
|
|
}
|
|
p.impl.SetSubprogram(p.diFunc.ll)
|
|
}
|
|
b.impl.SetCurrentDebugLocation(
|
|
uint(bodyPos.Line),
|
|
uint(bodyPos.Column),
|
|
p.diFunc.ll,
|
|
f.impl.InstructionDebugLoc(),
|
|
)
|
|
}
|
|
|
|
func (b Builder) Param(idx int) Expr {
|
|
p := b.Func.Param(idx)
|
|
if v, ok := b.dbgVars[p]; ok {
|
|
return v.val
|
|
}
|
|
return p
|
|
}
|
|
|
|
// -----------------------------------------------------------------------------
|