| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -mtriple=amdgcn-amd-amdhsa -instcombine -S | FileCheck %s |
| |
| ; Simplify to +0.0 + z. |
| define float @test_zero(float %x, float %z) { |
| ; CHECK-LABEL: @test_zero( |
| ; CHECK-NEXT: [[CALL:%.*]] = fadd float [[Z:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: ret float [[CALL]] |
| ; |
| %call = call float @llvm.amdgcn.fma.legacy(float %x, float 0.0, float %z) |
| ret float %call |
| } |
| |
| ; Simplify to +0.0 + z, preserving fmf. |
| define float @test_zero_fmf(float %x, float %z) { |
| ; CHECK-LABEL: @test_zero_fmf( |
| ; CHECK-NEXT: [[CALL:%.*]] = fadd contract float [[Z:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: ret float [[CALL]] |
| ; |
| %call = call contract float @llvm.amdgcn.fma.legacy(float %x, float 0.0, float %z) |
| ret float %call |
| } |
| |
| ; Simplify to z. |
| define float @test_zero_nsz(float %x, float %z) { |
| ; CHECK-LABEL: @test_zero_nsz( |
| ; CHECK-NEXT: ret float [[Z:%.*]] |
| ; |
| %call = call nsz float @llvm.amdgcn.fma.legacy(float %x, float 0.0, float %z) |
| ret float %call |
| } |
| |
| ; Simplify to +0.0 + z. |
| define float @test_negzero(float %y, float %z) { |
| ; CHECK-LABEL: @test_negzero( |
| ; CHECK-NEXT: [[CALL:%.*]] = fadd float [[Z:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: ret float [[CALL]] |
| ; |
| %call = call float @llvm.amdgcn.fma.legacy(float -0.0, float %y, float %z) |
| ret float %call |
| } |
| |
| ; Simplify to z. |
| define float @test_negzero_nsz(float %y, float %z) { |
| ; CHECK-LABEL: @test_negzero_nsz( |
| ; CHECK-NEXT: ret float [[Z:%.*]] |
| ; |
| %call = call nsz float @llvm.amdgcn.fma.legacy(float -0.0, float %y, float %z) |
| ret float %call |
| } |
| |
| ; Combine to fma because the constant is finite and non-zero. |
| define float @test_const(float %x, float %z) { |
| ; CHECK-LABEL: @test_const( |
| ; CHECK-NEXT: [[CALL:%.*]] = call float @llvm.fma.f32(float [[X:%.*]], float 9.950000e+01, float [[Z:%.*]]) |
| ; CHECK-NEXT: ret float [[CALL]] |
| ; |
| %call = call float @llvm.amdgcn.fma.legacy(float %x, float 99.5, float %z) |
| ret float %call |
| } |
| |
| ; Combine to fma because the constant is finite and non-zero, preserving fmf. |
| define float @test_const_fmf(float %x, float %z) { |
| ; CHECK-LABEL: @test_const_fmf( |
| ; CHECK-NEXT: [[CALL:%.*]] = call contract float @llvm.fma.f32(float [[X:%.*]], float 9.950000e+01, float [[Z:%.*]]) |
| ; CHECK-NEXT: ret float [[CALL]] |
| ; |
| %call = call contract float @llvm.amdgcn.fma.legacy(float %x, float 99.5, float %z) |
| ret float %call |
| } |
| |
| ; Combine to fma because neither argument can be infinity or NaN. |
| define float @test_finite(i32 %x, i32 %y, float %z) { |
| ; CHECK-LABEL: @test_finite( |
| ; CHECK-NEXT: [[XF:%.*]] = sitofp i32 [[X:%.*]] to float |
| ; CHECK-NEXT: [[YF:%.*]] = sitofp i32 [[Y:%.*]] to float |
| ; CHECK-NEXT: [[CALL:%.*]] = call float @llvm.fma.f32(float [[XF]], float [[YF]], float [[Z:%.*]]) |
| ; CHECK-NEXT: ret float [[CALL]] |
| ; |
| %xf = sitofp i32 %x to float |
| %yf = sitofp i32 %y to float |
| %call = call float @llvm.amdgcn.fma.legacy(float %xf, float %yf, float %z) |
| ret float %call |
| } |
| |
| declare float @llvm.amdgcn.fma.legacy(float, float, float) |