[DAGCombiner] Add target hook function to decide folding (mul (add x, c1), c2)
[llvm-project.git] / llvm / test / Transforms / InstCombine / 2007-09-10-AliasConstFold.ll
blobc303ddd58974dbe5996732542551baadbec2c77b
1 ; RUN: opt < %s -instcombine -S | grep icmp
2 ; PR1646
4 @__gthrw_pthread_cancel = weak alias i32 (i32), i32 (i32)* @pthread_cancel              ; <i32 (i32)*> [#uses=1]
5 @__gthread_active_ptr.5335 = internal constant i8* bitcast (i32 (i32)* @__gthrw_pthread_cancel to i8*)          ; <i8**> [#uses=1]
6 define weak i32 @pthread_cancel(i32) {
7        ret i32 0
10 define i1 @__gthread_active_p() {
11 entry:
12         %tmp1 = load i8*, i8** @__gthread_active_ptr.5335, align 4              ; <i8*> [#uses=1]
13         %tmp2 = icmp ne i8* %tmp1, null         ; <i1> [#uses=1]
14         ret i1 %tmp2