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
diff --git a/llvm/test/CodeGen/X86/coff-weak.ll b/llvm/test/CodeGen/X86/coff-weak.ll
new file mode 100644
index 0000000..3697501
--- /dev/null
+++ b/llvm/test/CodeGen/X86/coff-weak.ll
@@ -0,0 +1,9 @@
+; RUN: llc -function-sections -o - %s | FileCheck %s
+
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+; CHECK: .section{{.*}}one_only
+define linkonce_odr void @foo() {
+ ret void
+}