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[X86] Twist shuffle mask when fold HOP(SHUFFLE(X,Y),SHUFFLE(X,Y)) -> …
…SHUFFLE(HOP(X,Y)) This patch fixes PR50823. The shuffle mask should be twisted twice before gotten the correct one due to the difference between inner HOP and outer. Reviewed By: RKSimon Differential Revision: https://reviews.llvm.org/D104903
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py | ||
; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=core-avx2 | FileCheck %s | ||
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%v8_uniform_FVector3 = type { float, float, float } | ||
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declare <8 x float> @llvm.x86.avx.hadd.ps.256(<8 x float>, <8 x float>) | ||
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define void @foo(%v8_uniform_FVector3* %Out, float* %In, <8 x i32> %__mask) { | ||
; CHECK-LABEL: foo: | ||
; CHECK: # %bb.0: # %allocas | ||
; CHECK-NEXT: vmovups (%rsi), %xmm0 | ||
; CHECK-NEXT: vhaddps 32(%rsi), %xmm0, %xmm0 | ||
; CHECK-NEXT: vpermpd {{.*#+}} ymm0 = ymm0[0,0,1,1] | ||
; CHECK-NEXT: vhaddps %ymm0, %ymm0, %ymm0 | ||
; CHECK-NEXT: vextractf128 $1, %ymm0, %xmm1 | ||
; CHECK-NEXT: vaddss %xmm1, %xmm0, %xmm0 | ||
; CHECK-NEXT: vmovss %xmm0, (%rdi) | ||
; CHECK-NEXT: vzeroupper | ||
; CHECK-NEXT: retq | ||
allocas: | ||
%ptr_cast_for_load = bitcast float* %In to <8 x float>* | ||
%ptr_masked_load74 = load <8 x float>, <8 x float>* %ptr_cast_for_load, align 4 | ||
%ptr8096 = getelementptr float, float* %In, i64 8 | ||
%ptr_cast_for_load81 = bitcast float* %ptr8096 to <8 x float>* | ||
%ptr80_masked_load82 = load <8 x float>, <8 x float>* %ptr_cast_for_load81, align 4 | ||
%ret_7.i.i = shufflevector <8 x float> %ptr_masked_load74, <8 x float> %ptr80_masked_load82, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 8, i32 9, i32 10, i32 11> | ||
%Out_load19 = getelementptr %v8_uniform_FVector3, %v8_uniform_FVector3* %Out, i64 0, i32 0 | ||
%v1.i.i100 = tail call <8 x float> @llvm.x86.avx.hadd.ps.256(<8 x float> %ret_7.i.i, <8 x float> %ret_7.i.i) | ||
%v2.i.i101 = tail call <8 x float> @llvm.x86.avx.hadd.ps.256(<8 x float> %v1.i.i100, <8 x float> %v1.i.i100) | ||
%scalar1.i.i102 = extractelement <8 x float> %v2.i.i101, i32 0 | ||
%scalar2.i.i103 = extractelement <8 x float> %v2.i.i101, i32 4 | ||
%sum.i.i104 = fadd float %scalar1.i.i102, %scalar2.i.i103 | ||
store float %sum.i.i104, float* %Out_load19, align 4 | ||
ret void | ||
} |