COFF: Do not assign linker-weak symbols to selectany comdat sections.

It is mandatory to specify a comdat in order to receive comdat semantics
for a symbol. We were previously getting this wrong in -function-sections
mode; linker-weak symbols were being emitted in a selectany comdat. This
change causes such symbols to use a noduplicates comdat instead, fixing
the inconsistency.

Also correct an inaccuracy in the docs.

Differential Revision: http://reviews.llvm.org/D10828

llvm-svn: 241103

1 files changed, 0 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index e1ac444d4a4..2f78763d8e0 100644
--- a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -840,8 +840,6 @@ static int getSelectionForCOFF(const GlobalValue *GV) {
     } else {
       return COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE;
     }
-  } else if (GV->isWeakForLinker()) {
-    return COFF::IMAGE_COMDAT_SELECT_ANY;
   }
   return 0;
 }