1 ; RUN: opt -instcombine -S < %s | FileCheck %s 2 3 declare float @llvm.AMDGPU.rcp.f32(float) nounwind readnone 4 declare double @llvm.AMDGPU.rcp.f64(double) nounwind readnone 5 6 ; CHECK-LABEL: @test_constant_fold_rcp_f32_1 7 ; CHECK-NEXT: ret float 1.000000e+00 8 define float @test_constant_fold_rcp_f32_1() nounwind { 9 %val = call float @llvm.AMDGPU.rcp.f32(float 1.0) nounwind readnone 10 ret float %val 11 } 12 13 ; CHECK-LABEL: @test_constant_fold_rcp_f64_1 14 ; CHECK-NEXT: ret double 1.000000e+00 15 define double @test_constant_fold_rcp_f64_1() nounwind { 16 %val = call double @llvm.AMDGPU.rcp.f64(double 1.0) nounwind readnone 17 ret double %val 18 } 19 20 ; CHECK-LABEL: @test_constant_fold_rcp_f32_half 21 ; CHECK-NEXT: ret float 2.000000e+00 22 define float @test_constant_fold_rcp_f32_half() nounwind { 23 %val = call float @llvm.AMDGPU.rcp.f32(float 0.5) nounwind readnone 24 ret float %val 25 } 26 27 ; CHECK-LABEL: @test_constant_fold_rcp_f64_half 28 ; CHECK-NEXT: ret double 2.000000e+00 29 define double @test_constant_fold_rcp_f64_half() nounwind { 30 %val = call double @llvm.AMDGPU.rcp.f64(double 0.5) nounwind readnone 31 ret double %val 32 } 33 34 ; CHECK-LABEL: @test_constant_fold_rcp_f32_43 35 ; CHECK-NEXT: call float @llvm.AMDGPU.rcp.f32(float 4.300000e+01) 36 define float @test_constant_fold_rcp_f32_43() nounwind { 37 %val = call float @llvm.AMDGPU.rcp.f32(float 4.300000e+01) nounwind readnone 38 ret float %val 39 } 40 41 ; CHECK-LABEL: @test_constant_fold_rcp_f64_43 42 ; CHECK-NEXT: call double @llvm.AMDGPU.rcp.f64(double 4.300000e+01) 43 define double @test_constant_fold_rcp_f64_43() nounwind { 44 %val = call double @llvm.AMDGPU.rcp.f64(double 4.300000e+01) nounwind readnone 45 ret double %val 46 } 47 48
