Store an optional section start label in MCSection.

This makes code that uses section relative expressions (debug info) simpler and
less brittle.

This is still a bit awkward as the symbol is created late and has to be
stored in a mutable field.

I will move the symbol creation earlier in the next patch.

llvm-svn: 231802

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp
index 7eceec3cf2b..60acc58e787 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp
@@ -47,13 +47,13 @@ void DwarfFile::addUnit(std::unique_ptr<DwarfUnit> U) {
 
 // Emit the various dwarf units to the unit section USection with
 // the abbreviations going into ASection.
-void DwarfFile::emitUnits(const MCSymbol *ASectionSym) {
+void DwarfFile::emitUnits(bool UseOffsets) {
   for (const auto &TheU : CUs) {
     DIE &Die = TheU->getUnitDie();
     const MCSection *USection = TheU->getSection();
     Asm->OutStreamer.SwitchSection(USection);
 
-    TheU->emitHeader(ASectionSym);
+    TheU->emitHeader(UseOffsets);
 
     Asm->emitDwarfDIE(Die);
   }