// Finalize must be called after all compilation units are translated,
// generating the final debug metadata for the module.
func (d *DIBuilder) Finalize() {
d.module.AddNamedMetadataOperand(
"llvm.module.flags",
llvm.MDNode([]llvm.Value{
llvm.ConstInt(llvm.Int32Type(), 2, false), // Warn on mismatch
llvm.MDString("Dwarf Version"),
llvm.ConstInt(llvm.Int32Type(), 4, false),
}),
)
d.module.AddNamedMetadataOperand(
"llvm.module.flags",
llvm.MDNode([]llvm.Value{
llvm.ConstInt(llvm.Int32Type(), 1, false), // Error on mismatch
llvm.MDString("Debug Info Version"),
llvm.ConstInt(llvm.Int32Type(), 1, false),
}),
)
d.builder.Finalize()
}
func (fr *frame) setBranchWeightMetadata(br llvm.Value, trueweight, falseweight uint64) {
mdprof := llvm.MDKindID("prof")
mdnode := llvm.MDNode([]llvm.Value{
llvm.MDString("branch_weights"),
llvm.ConstInt(llvm.Int32Type(), trueweight, false),
llvm.ConstInt(llvm.Int32Type(), falseweight, false),
})
br.SetMetadata(mdprof, mdnode)
}
// SetLocation sets the current debug location.
func (d *DIBuilder) SetLocation(b llvm.Builder, pos token.Pos) {
if !pos.IsValid() {
return
}
position := d.fset.Position(pos)
d.lb = llvm.Value{nil}
if position.Filename != d.fnFile && position.Filename != "" {
// This can happen rarely, e.g. in init functions.
diFile := d.builder.CreateFile(d.remapFilePath(position.Filename), "")
d.lb = d.builder.CreateLexicalBlockFile(d.scope(), diFile, 0)
}
b.SetCurrentDebugLocation(llvm.MDNode([]llvm.Value{
llvm.ConstInt(llvm.Int32Type(), uint64(position.Line), false),
llvm.ConstInt(llvm.Int32Type(), uint64(position.Column), false),
d.scope(),
llvm.Value{},
}))
}
func (d *DIBuilder) descriptorNamed(t *types.Named) llvm.Value {
// Create a placeholder for the named type, to terminate cycles.
placeholder := llvm.MDNode(nil)
d.types.Set(t, placeholder)
var diFile llvm.Value
var line int
if file := d.fset.File(t.Obj().Pos()); file != nil {
line = file.Line(t.Obj().Pos())
diFile = d.getFile(file)
}
typedef := d.builder.CreateTypedef(llvm.DITypedef{
Type: d.DIType(t.Underlying()),
Name: t.Obj().Name(),
File: diFile,
Line: line,
})
placeholder.ReplaceAllUsesWith(typedef)
return typedef
}
