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 } 28
