Reland r345009 "[DebugInfo] Generate debug information for labels."
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.
After fixing NULL symbol problems in AddressPool when enabling
split-dwarf-file.
After fixing PR39094.
After landing D54199 and D54465 to fix Chromium build failed.
Differential Revision: https://reviews.llvm.org/D45045
llvm-svn: 352025
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index 6a80915..a142625 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -3862,6 +3862,32 @@
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<NoDebugAttr>())
+ return;
+
+ auto *Scope = cast<llvm::DIScope>(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);