Use a better name for compile unit labels.

They mark the start of a compile unit, so name them .Lcu_*. Using
Section->getLabelBeginName() makes it looks like they mark the start of the
section.

While at it, switch to createTempSymbol to avoid collisions with labels
created in inline assembly. Not sure if a "don't crash" test is worth it.

With this getLabelBeginName is dead, delete it.

llvm-svn: 231750

2 files changed, 1 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 64bee0cebb9..85649492e23 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -714,8 +714,7 @@ void DwarfCompileUnit::collectDeadVariables(DISubprogram SP) {
 void DwarfCompileUnit::emitHeader(const MCSymbol *ASectionSym) {
   // Don't bother labeling the .dwo unit, as its offset isn't used.
   if (!Skeleton) {
-    LabelBegin =
-      Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID());
+    LabelBegin = Asm->createTempSymbol("cu_begin", getUniqueID());
     Asm->OutStreamer.EmitLabel(LabelBegin);
   }
 
diff --git a/llvm/lib/Target/NVPTX/NVPTXSection.h b/llvm/lib/Target/NVPTX/NVPTXSection.h
index 8bc6336ff73..6bb1e3dbb27 100644
--- a/llvm/lib/Target/NVPTX/NVPTXSection.h
+++ b/llvm/lib/Target/NVPTX/NVPTXSection.h
@@ -39,7 +39,6 @@ public:
   bool isBaseAddressKnownZero() const override { return true; }
   bool UseCodeAlign() const override { return false; }
   bool isVirtualSection() const override { return false; }
-  std::string getLabelBeginName() const override { return ""; }
 };
 
 } // end namespace llvm