1; RUN: opt < %s -instsimplify -S | FileCheck %s
2
3declare double @llvm.powi.f64(double, i32) nounwind readonly
4declare i32 @llvm.bswap.i32(i32)
5
6; A
7define i32 @test_bswap(i32 %a) nounwind {
8; CHECK-LABEL: @test_bswap(
9; CHECK-NEXT:    ret i32 %a
10;
11  %tmp2 = tail call i32 @llvm.bswap.i32( i32 %a )
12  %tmp4 = tail call i32 @llvm.bswap.i32( i32 %tmp2 )
13  ret i32 %tmp4
14}
15
16define void @powi(double %V, double *%P) {
17  %B = tail call double @llvm.powi.f64(double %V, i32 0) nounwind
18  store volatile double %B, double* %P
19
20  %C = tail call double @llvm.powi.f64(double %V, i32 1) nounwind
21  store volatile double %C, double* %P
22
23  ret void
24; CHECK-LABEL: @powi(
25; CHECK: store volatile double 1.0
26; CHECK: store volatile double %V
27}
28