test/CodeGen/X86/2007-09-06-ExtWeakAliasee.ll - llvm - Git at Google

 ; RUN: llc < %s -march=x86 | grep weak | count 2
 @__gthrw_pthread_once = alias weak i32 (i32*, void ()*)* @pthread_once		; <i32 (i32*, void ()*)*> [#uses=0]

 declare extern_weak i32 @pthread_once(i32*, void ()*)
	; RUN: llc < %s -march=x86 \| grep weak \| count 2
	@__gthrw_pthread_once = alias weak i32 (i32, void ())* @pthread_once ; <i32 (i32, void ())*> [#uses=0]

	declare extern_weak i32 @pthread_once(i32, void ())