From 0a875b2f15b1285d36d1d9ce92404f75bd10e99a Mon Sep 17 00:00:00 2001 From: Hsiangkai Wang Date: Thu, 6 Sep 2018 06:03:36 +0000 Subject: [DebugInfo] Generate debug information for labels. (Fix PR37395) Generate DILabel metadata and call llvm.dbg.label after label statement to associate the metadata with the label. After fixing PR37395. After fixing problems in LiveDebugVariables. Differential Revision: https://reviews.llvm.org/D45045 llvm-svn: 341519 --- clang/lib/CodeGen/CGDebugInfo.cpp | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'clang/lib/CodeGen/CGDebugInfo.cpp') diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp index ac22dde9f96..17a24258548 100644 --- a/clang/lib/CodeGen/CGDebugInfo.cpp +++ b/clang/lib/CodeGen/CGDebugInfo.cpp @@ -3769,6 +3769,32 @@ CGDebugInfo::EmitDeclareOfAutoVariable(const VarDecl *VD, llvm::Value *Storage, return EmitDeclare(VD, Storage, llvm::None, Builder); } +void CGDebugInfo::EmitLabel(const LabelDecl *D, CGBuilderTy &Builder) { + assert(DebugKind >= codegenoptions::LimitedDebugInfo); + assert(!LexicalBlockStack.empty() && "Region stack mismatch, stack empty!"); + + if (D->hasAttr()) + return; + + auto *Scope = cast(LexicalBlockStack.back()); + llvm::DIFile *Unit = getOrCreateFile(D->getLocation()); + + // Get location information. + unsigned Line = getLineNumber(D->getLocation()); + unsigned Column = getColumnNumber(D->getLocation()); + + StringRef Name = D->getName(); + + // Create the descriptor for the label. + auto *L = + DBuilder.createLabel(Scope, Name, Unit, Line, CGM.getLangOpts().Optimize); + + // Insert an llvm.dbg.label into the current block. + DBuilder.insertLabel(L, + llvm::DebugLoc::get(Line, Column, Scope, CurInlinedAt), + Builder.GetInsertBlock()); +} + llvm::DIType *CGDebugInfo::CreateSelfType(const QualType &QualTy, llvm::DIType *Ty) { llvm::DIType *CachedTy = getTypeOrNull(QualTy); -- cgit v1.2.3