GV with null value initializer shouldn't go to BSS if it's meant for a mergeable strings section. Currently it only checks for Darwin. Someone else please check if it should apply to other targets as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64877 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/cstring.ll b/test/CodeGen/X86/cstring.ll
new file mode 100644
index 0000000..27d6181
--- /dev/null
+++ b/test/CodeGen/X86/cstring.ll
@@ -0,0 +1,4 @@
+; RUN: llvm-as < %s | llc -mtriple=i386-apple-darwin | not grep comm
+; rdar://6479858
+
+@str1 = internal constant [1 x i8] zeroinitializer