From a0ef5ed742a81b134ac4438c3a4adc0c9a151b64 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Mon, 10 Sep 2007 23:42:42 +0000 Subject: Fix a buggy constant folding transformation when handling aliases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41818 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll (limited to 'test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll') diff --git a/test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll b/test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll new file mode 100644 index 0000000000..2dcb43926b --- /dev/null +++ b/test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll @@ -0,0 +1,13 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep icmp +; PR1646 + +@__gthrw_pthread_cancel = alias weak i32 (i32)* @pthread_cancel ; [#uses=1] +@__gthread_active_ptr.5335 = internal constant i8* bitcast (i32 (i32)* @__gthrw_pthread_cancel to i8*) ; [#uses=1] +declare extern_weak i32 @pthread_cancel(i32) + +define i1 @__gthread_active_p() { +entry: + %tmp1 = load i8** @__gthread_active_ptr.5335, align 4 ; [#uses=1] + %tmp2 = icmp ne i8* %tmp1, null ; [#uses=1] + ret i1 %tmp2 +} -- cgit v1.2.3