Use comdats to avoid double initialization of weak data
Initializers of global data that can appear multiple TUs (static data
members of class templates or __declspec(selectany) data) are now in a
comdat group keyed on the global variable being initialized. On
non-Windows platforms, this is a code size and startup time
optimization. On Windows, this is necessary for ABI compatibility with
MSVC.
Fixes PR16959.
Reviewers: rsmith
Differential Revision: http://reviews.llvm.org/D3811
llvm-svn: 209555
diff --git a/clang/test/CodeGenCXX/init-priority-attr.cpp b/clang/test/CodeGenCXX/init-priority-attr.cpp
index 799a6ba..ff155d0 100644
--- a/clang/test/CodeGenCXX/init-priority-attr.cpp
+++ b/clang/test/CodeGenCXX/init-priority-attr.cpp
@@ -27,7 +27,10 @@
A C::a = A();
-// CHECK: @llvm.global_ctors = appending global [3 x { i32, void ()* }] [{ i32, void ()* } { i32 200, void ()* @_GLOBAL__I_000200 }, { i32, void ()* } { i32 300, void ()* @_GLOBAL__I_000300 }, { i32, void ()* } { i32 65535, void ()* @_GLOBAL__sub_I_init_priority_attr.cpp }]
+// CHECK: @llvm.global_ctors = appending global [3 x { i32, void ()*, i8* }]
+// CHECK: [{ i32, void ()*, i8* } { i32 200, void ()* @_GLOBAL__I_000200, i8* null },
+// CHECK: { i32, void ()*, i8* } { i32 300, void ()* @_GLOBAL__I_000300, i8* null },
+// CHECK: { i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_init_priority_attr.cpp, i8* null }]
// CHECK: _GLOBAL__I_000200()
// CHECK: _Z3fooi(i32 3)