1; RUN: opt -instcombine -S < %s | FileCheck %s 2 3declare float @llvm.AMDGPU.rcp.f32(float) nounwind readnone 4declare 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 8define 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 15define 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 22define 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 29define 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) 36define 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) 43define 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