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70ff6138f8
The intrinsics can be implemented with a f32/f64 llvm.fma intrinsic and an insert into a zero vector. There are a couple regressions here due to SelectionDAG not being able to pull an fneg through an extract_vector_elt. I'm not super worried about this though as InstCombine should be able to do it before we get to SelectionDAG. llvm-svn: 336416
105 lines
4.0 KiB
LLVM
105 lines
4.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mattr=fma4 | FileCheck %s
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target triple = "x86_64-unknown-unknown"
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declare <4 x float> @llvm.x86.fma4.vfmadd.ss(<4 x float>, <4 x float>, <4 x float>)
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declare <2 x double> @llvm.x86.fma4.vfmadd.sd(<2 x double>, <2 x double>, <2 x double>)
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define void @fmadd_aab_ss(float* %a, float* %b) {
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; CHECK-LABEL: fmadd_aab_ss:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vmovss {{.*#+}} xmm0 = mem[0],zero,zero,zero
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; CHECK-NEXT: vfmaddss (%rsi), %xmm0, %xmm0, %xmm0
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; CHECK-NEXT: vmovss %xmm0, (%rdi)
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; CHECK-NEXT: retq
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%a.val = load float, float* %a
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%av0 = insertelement <4 x float> undef, float %a.val, i32 0
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%av1 = insertelement <4 x float> %av0, float 0.000000e+00, i32 1
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%av2 = insertelement <4 x float> %av1, float 0.000000e+00, i32 2
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%av = insertelement <4 x float> %av2, float 0.000000e+00, i32 3
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%b.val = load float, float* %b
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%bv0 = insertelement <4 x float> undef, float %b.val, i32 0
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%bv1 = insertelement <4 x float> %bv0, float 0.000000e+00, i32 1
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%bv2 = insertelement <4 x float> %bv1, float 0.000000e+00, i32 2
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%bv = insertelement <4 x float> %bv2, float 0.000000e+00, i32 3
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%vr = call <4 x float> @llvm.x86.fma4.vfmadd.ss(<4 x float> %av, <4 x float> %av, <4 x float> %bv)
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%sr = extractelement <4 x float> %vr, i32 0
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store float %sr, float* %a
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ret void
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}
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define void @fmadd_aba_ss(float* %a, float* %b) {
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; CHECK-LABEL: fmadd_aba_ss:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vmovss {{.*#+}} xmm0 = mem[0],zero,zero,zero
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; CHECK-NEXT: vfmaddss %xmm0, (%rsi), %xmm0, %xmm0
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; CHECK-NEXT: vmovss %xmm0, (%rdi)
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; CHECK-NEXT: retq
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%a.val = load float, float* %a
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%av0 = insertelement <4 x float> undef, float %a.val, i32 0
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%av1 = insertelement <4 x float> %av0, float 0.000000e+00, i32 1
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%av2 = insertelement <4 x float> %av1, float 0.000000e+00, i32 2
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%av = insertelement <4 x float> %av2, float 0.000000e+00, i32 3
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%b.val = load float, float* %b
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%bv0 = insertelement <4 x float> undef, float %b.val, i32 0
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%bv1 = insertelement <4 x float> %bv0, float 0.000000e+00, i32 1
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%bv2 = insertelement <4 x float> %bv1, float 0.000000e+00, i32 2
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%bv = insertelement <4 x float> %bv2, float 0.000000e+00, i32 3
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%vr = call <4 x float> @llvm.x86.fma4.vfmadd.ss(<4 x float> %av, <4 x float> %bv, <4 x float> %av)
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%sr = extractelement <4 x float> %vr, i32 0
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store float %sr, float* %a
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ret void
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}
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define void @fmadd_aab_sd(double* %a, double* %b) {
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; CHECK-LABEL: fmadd_aab_sd:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
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; CHECK-NEXT: vfmaddsd (%rsi), %xmm0, %xmm0, %xmm0
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; CHECK-NEXT: vmovsd %xmm0, (%rdi)
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; CHECK-NEXT: retq
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%a.val = load double, double* %a
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%av0 = insertelement <2 x double> undef, double %a.val, i32 0
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%av = insertelement <2 x double> %av0, double 0.000000e+00, i32 1
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%b.val = load double, double* %b
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%bv0 = insertelement <2 x double> undef, double %b.val, i32 0
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%bv = insertelement <2 x double> %bv0, double 0.000000e+00, i32 1
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%vr = call <2 x double> @llvm.x86.fma4.vfmadd.sd(<2 x double> %av, <2 x double> %av, <2 x double> %bv)
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%sr = extractelement <2 x double> %vr, i32 0
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store double %sr, double* %a
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ret void
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}
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define void @fmadd_aba_sd(double* %a, double* %b) {
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; CHECK-LABEL: fmadd_aba_sd:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
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; CHECK-NEXT: vfmaddsd %xmm0, (%rsi), %xmm0, %xmm0
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; CHECK-NEXT: vmovsd %xmm0, (%rdi)
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; CHECK-NEXT: retq
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%a.val = load double, double* %a
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%av0 = insertelement <2 x double> undef, double %a.val, i32 0
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%av = insertelement <2 x double> %av0, double 0.000000e+00, i32 1
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%b.val = load double, double* %b
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%bv0 = insertelement <2 x double> undef, double %b.val, i32 0
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%bv = insertelement <2 x double> %bv0, double 0.000000e+00, i32 1
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%vr = call <2 x double> @llvm.x86.fma4.vfmadd.sd(<2 x double> %av, <2 x double> %bv, <2 x double> %av)
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%sr = extractelement <2 x double> %vr, i32 0
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store double %sr, double* %a
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ret void
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}
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