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e1e23467af
This patch changes how LLVM handles the accumulator/start value in the reduction, by never ignoring it regardless of the presence of fast-math flags on callsites. This change introduces the following new intrinsics to replace the existing ones: llvm.experimental.vector.reduce.fadd -> llvm.experimental.vector.reduce.v2.fadd llvm.experimental.vector.reduce.fmul -> llvm.experimental.vector.reduce.v2.fmul and adds functionality to auto-upgrade existing LLVM IR and bitcode. Reviewers: RKSimon, greened, dmgreen, nikic, simoll, aemerson Reviewed By: nikic Differential Revision: https://reviews.llvm.org/D60261 llvm-svn: 363035
65 lines
2.9 KiB
LLVM
65 lines
2.9 KiB
LLVM
; RUN: opt -S < %s | FileCheck %s
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; RUN: llvm-dis < %s.bc | FileCheck %s
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define float @fadd_acc(<4 x float> %in, float %acc) {
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; CHECK-LABEL: @fadd_acc
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; CHECK: %res = call float @llvm.experimental.vector.reduce.v2.fadd.f32.v4f32(float %acc, <4 x float> %in)
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%res = call float @llvm.experimental.vector.reduce.fadd.f32.v4f32(float %acc, <4 x float> %in)
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ret float %res
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}
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define float @fadd_undef(<4 x float> %in) {
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; CHECK-LABEL: @fadd_undef
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; CHECK: %res = call float @llvm.experimental.vector.reduce.v2.fadd.f32.v4f32(float undef, <4 x float> %in)
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%res = call float @llvm.experimental.vector.reduce.fadd.f32.v4f32(float undef, <4 x float> %in)
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ret float %res
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}
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define float @fadd_fast_acc(<4 x float> %in, float %acc) {
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; CHECK-LABEL: @fadd_fast_acc
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; CHECK: %res = call fast float @llvm.experimental.vector.reduce.v2.fadd.f32.v4f32(float 0.000000e+00, <4 x float> %in)
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%res = call fast float @llvm.experimental.vector.reduce.fadd.f32.v4f32(float %acc, <4 x float> %in)
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ret float %res
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}
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define float @fadd_fast_undef(<4 x float> %in) {
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; CHECK-LABEL: @fadd_fast_undef
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; CHECK: %res = call fast float @llvm.experimental.vector.reduce.v2.fadd.f32.v4f32(float 0.000000e+00, <4 x float> %in)
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%res = call fast float @llvm.experimental.vector.reduce.fadd.f32.v4f32(float undef, <4 x float> %in)
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ret float %res
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}
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define float @fmul_acc(<4 x float> %in, float %acc) {
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; CHECK-LABEL: @fmul_acc
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; CHECK: %res = call float @llvm.experimental.vector.reduce.v2.fmul.f32.v4f32(float %acc, <4 x float> %in)
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%res = call float @llvm.experimental.vector.reduce.fmul.f32.v4f32(float %acc, <4 x float> %in)
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ret float %res
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}
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define float @fmul_undef(<4 x float> %in) {
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; CHECK-LABEL: @fmul_undef
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; CHECK: %res = call float @llvm.experimental.vector.reduce.v2.fmul.f32.v4f32(float undef, <4 x float> %in)
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%res = call float @llvm.experimental.vector.reduce.fmul.f32.v4f32(float undef, <4 x float> %in)
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ret float %res
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}
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define float @fmul_fast_acc(<4 x float> %in, float %acc) {
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; CHECK-LABEL: @fmul_fast_acc
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; CHECK: %res = call fast float @llvm.experimental.vector.reduce.v2.fmul.f32.v4f32(float 1.000000e+00, <4 x float> %in)
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%res = call fast float @llvm.experimental.vector.reduce.fmul.f32.v4f32(float %acc, <4 x float> %in)
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ret float %res
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}
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define float @fmul_fast_undef(<4 x float> %in) {
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; CHECK-LABEL: @fmul_fast_undef
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; CHECK: %res = call fast float @llvm.experimental.vector.reduce.v2.fmul.f32.v4f32(float 1.000000e+00, <4 x float> %in)
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%res = call fast float @llvm.experimental.vector.reduce.fmul.f32.v4f32(float undef, <4 x float> %in)
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ret float %res
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}
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declare float @llvm.experimental.vector.reduce.fadd.f32.v4f32(float, <4 x float>)
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; CHECK: declare float @llvm.experimental.vector.reduce.v2.fadd.f32.v4f32(float, <4 x float>)
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declare float @llvm.experimental.vector.reduce.fmul.f32.v4f32(float, <4 x float>)
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; CHECK: declare float @llvm.experimental.vector.reduce.v2.fmul.f32.v4f32(float, <4 x float>)
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