Cleanup handling of .zerofill on darwin:

1. TargetLoweringObjectFileMachO should decide if something
   goes in zerofill instead of having every target do it.
2. TargetLoweringObjectFileMachO should assign said symbols to
   the right MCSection, the asmprinters should just emit to the
   right section.
3. Since all zerofill stuff goes through mcstreamer anymore,
   MAI can have a bool "haszerofill" instead of having the textual
   directive to emit.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93838 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/include/llvm/Target/TargetLoweringObjectFile.h b/include/llvm/Target/TargetLoweringObjectFile.h
index 3dd747175b..fec56fa442 100644
--- a/include/llvm/Target/TargetLoweringObjectFile.h
+++ b/include/llvm/Target/TargetLoweringObjectFile.h
@@ -258,6 +258,7 @@ class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
   const MCSection *ConstDataCoalSection;
   const MCSection *ConstDataSection;
   const MCSection *DataCoalSection;
+  const MCSection *DataCommonSection;
   const MCSection *FourByteConstantSection;
   const MCSection *EightByteConstantSection;
   const MCSection *SixteenByteConstantSection;
@@ -312,6 +313,12 @@ public:
     return ConstTextCoalSection;
   }
   
+  /// getDataCommonSection - Return the "__DATA,__common" section we put
+  /// zerofill (aka bss) data into.
+  const MCSection *getDataCommonSection() const {
+    return DataCommonSection;
+  }
+  
   /// getLazySymbolPointerSection - Return the section corresponding to
   /// the .lazy_symbol_pointer directive.
   const MCSection *getLazySymbolPointerSection() const {