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