commit 0806f982e02f777761970f4434fee17f9a768329
author Rafael Espindola <rafael.espindola@gmail.com> Tue Sep 16 20:19:43 2014 +0000
committer Rafael Espindola <rafael.espindola@gmail.com> Tue Sep 16 20:19:43 2014 +0000
tree 61020c5152527f3d3cf7a9be6983638a19c1ec2b
parent 337188fdb8762fb80f4661c6405f8699e78b224a

Don't try to use C5/D5 comdats in COFF.

This should fix the mingw bootstrap.

llvm-svn: 217897

clang/lib/CodeGen/ItaniumCXXABI.cpp

diff --git a/clang/lib/CodeGen/ItaniumCXXABI.cpp b/clang/lib/CodeGen/ItaniumCXXABI.cpp
index 038d890..4a24e77 100644
--- a/clang/lib/CodeGen/ItaniumCXXABI.cpp
+++ b/clang/lib/CodeGen/ItaniumCXXABI.cpp
@@ -3029,8 +3029,12 @@
   if (!llvm::GlobalAlias::isValidLinkage(Linkage))
     return StructorCodegen::RAUW;
 
-  if (llvm::GlobalValue::isWeakForLinker(Linkage))
-    return StructorCodegen::COMDAT;
+  if (llvm::GlobalValue::isWeakForLinker(Linkage)) {
+    // Only ELF supports COMDATs with arbitrary names (C5/D5).
+    if (CGM.getTarget().getTriple().isOSBinFormatELF())
+      return StructorCodegen::COMDAT;
+    return StructorCodegen::Emit;
+  }
 
   return StructorCodegen::Alias;
 }