| Philip Reames | 3e9c671 | 2017-12-30 03:13:00 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -instsimplify -S | FileCheck %s |
| 2 | |
| 3 | declare double @llvm.powi.f64(double, i32) nounwind readonly |
| 4 | declare i32 @llvm.bswap.i32(i32) |
| 5 | |
| 6 | ; A |
| 7 | define 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 | |
| 16 | define 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 | } |