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21418c85a1
If the mask input to getV4X86ShuffleImm8 only refers to a single source element (+ undefs) then canonicalize to a full broadcast. getV4X86ShuffleImm8 defaults to inline values for undefs, which can be useful for shuffle widening/narrowing but does leave SimplifyDemanded* calls thinking the shuffle depends on unnecessary elements. I'm still investigating what we should do more generally to avoid these undemanded elements, but broadcast cases was a simpler win.
83 lines
4.5 KiB
LLVM
83 lines
4.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
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define <3 x i32> @f_29(<12 x i16> %a, <12 x i16> %b) {
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; CHECK-LABEL: f_29:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
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; CHECK-NEXT: movd {{.*#+}} xmm1 = mem[0],zero,zero,zero
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; CHECK-NEXT: punpcklwd {{.*#+}} xmm1 = xmm1[0],xmm0[0],xmm1[1],xmm0[1],xmm1[2],xmm0[2],xmm1[3],xmm0[3]
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; CHECK-NEXT: movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
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; CHECK-NEXT: movd {{.*#+}} xmm2 = mem[0],zero,zero,zero
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; CHECK-NEXT: punpcklwd {{.*#+}} xmm2 = xmm2[0],xmm0[0],xmm2[1],xmm0[1],xmm2[2],xmm0[2],xmm2[3],xmm0[3]
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; CHECK-NEXT: punpckldq {{.*#+}} xmm2 = xmm2[0],xmm1[0],xmm2[1],xmm1[1]
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; CHECK-NEXT: movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
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; CHECK-NEXT: movd {{.*#+}} xmm3 = mem[0],zero,zero,zero
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; CHECK-NEXT: punpcklwd {{.*#+}} xmm3 = xmm3[0],xmm0[0],xmm3[1],xmm0[1],xmm3[2],xmm0[2],xmm3[3],xmm0[3]
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; CHECK-NEXT: movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
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; CHECK-NEXT: movd {{.*#+}} xmm1 = mem[0],zero,zero,zero
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; CHECK-NEXT: punpcklwd {{.*#+}} xmm1 = xmm1[0],xmm0[0],xmm1[1],xmm0[1],xmm1[2],xmm0[2],xmm1[3],xmm0[3]
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; CHECK-NEXT: punpckldq {{.*#+}} xmm1 = xmm1[0],xmm3[0],xmm1[1],xmm3[1]
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; CHECK-NEXT: punpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm2[0]
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; CHECK-NEXT: movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
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; CHECK-NEXT: movd {{.*#+}} xmm2 = mem[0],zero,zero,zero
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; CHECK-NEXT: punpcklwd {{.*#+}} xmm2 = xmm2[0],xmm0[0],xmm2[1],xmm0[1],xmm2[2],xmm0[2],xmm2[3],xmm0[3]
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; CHECK-NEXT: movd %r9d, %xmm0
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; CHECK-NEXT: movd %r8d, %xmm3
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; CHECK-NEXT: punpcklwd {{.*#+}} xmm3 = xmm3[0],xmm0[0],xmm3[1],xmm0[1],xmm3[2],xmm0[2],xmm3[3],xmm0[3]
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; CHECK-NEXT: punpckldq {{.*#+}} xmm3 = xmm3[0],xmm2[0],xmm3[1],xmm2[1]
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; CHECK-NEXT: movd %ecx, %xmm0
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; CHECK-NEXT: movd %edx, %xmm2
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; CHECK-NEXT: punpcklwd {{.*#+}} xmm2 = xmm2[0],xmm0[0],xmm2[1],xmm0[1],xmm2[2],xmm0[2],xmm2[3],xmm0[3]
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; CHECK-NEXT: movd %esi, %xmm4
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; CHECK-NEXT: movd %edi, %xmm0
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; CHECK-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0],xmm4[0],xmm0[1],xmm4[1],xmm0[2],xmm4[2],xmm0[3],xmm4[3]
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; CHECK-NEXT: punpckldq {{.*#+}} xmm0 = xmm0[0],xmm2[0],xmm0[1],xmm2[1]
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; CHECK-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm3[0]
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; CHECK-NEXT: movd {{.*#+}} xmm2 = mem[0],zero,zero,zero
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; CHECK-NEXT: pinsrw $1, {{[0-9]+}}(%rsp), %xmm2
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; CHECK-NEXT: pinsrw $2, {{[0-9]+}}(%rsp), %xmm2
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; CHECK-NEXT: pinsrw $3, {{[0-9]+}}(%rsp), %xmm2
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; CHECK-NEXT: movd {{.*#+}} xmm3 = mem[0],zero,zero,zero
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; CHECK-NEXT: pinsrw $1, {{[0-9]+}}(%rsp), %xmm3
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; CHECK-NEXT: pinsrw $2, {{[0-9]+}}(%rsp), %xmm3
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; CHECK-NEXT: pinsrw $3, {{[0-9]+}}(%rsp), %xmm3
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; CHECK-NEXT: movdqa %xmm0, %xmm4
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; CHECK-NEXT: pmulhuw %xmm1, %xmm4
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; CHECK-NEXT: pmullw %xmm1, %xmm0
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; CHECK-NEXT: movdqa %xmm0, %xmm1
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; CHECK-NEXT: punpckhwd {{.*#+}} xmm1 = xmm1[4],xmm4[4],xmm1[5],xmm4[5],xmm1[6],xmm4[6],xmm1[7],xmm4[7]
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; CHECK-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0],xmm4[0],xmm0[1],xmm4[1],xmm0[2],xmm4[2],xmm0[3],xmm4[3]
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; CHECK-NEXT: movdqa %xmm3, %xmm4
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; CHECK-NEXT: pmulhuw %xmm2, %xmm4
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; CHECK-NEXT: pmullw %xmm2, %xmm3
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; CHECK-NEXT: punpcklwd {{.*#+}} xmm3 = xmm3[0],xmm4[0],xmm3[1],xmm4[1],xmm3[2],xmm4[2],xmm3[3],xmm4[3]
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; CHECK-NEXT: movdqa %xmm0, %xmm2
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; CHECK-NEXT: shufps {{.*#+}} xmm2 = xmm2[1,3],xmm1[1,3]
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; CHECK-NEXT: pshufd {{.*#+}} xmm4 = xmm3[1,3,1,3]
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; CHECK-NEXT: shufps {{.*#+}} xmm0 = xmm0[0,2],xmm1[0,2]
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; CHECK-NEXT: paddd %xmm2, %xmm0
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; CHECK-NEXT: pshufd {{.*#+}} xmm1 = xmm3[0,2,1,3]
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; CHECK-NEXT: paddd %xmm4, %xmm1
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; CHECK-NEXT: movdqa %xmm0, %xmm2
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; CHECK-NEXT: shufps {{.*#+}} xmm2 = xmm2[1,3],xmm1[1,3]
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; CHECK-NEXT: shufps {{.*#+}} xmm0 = xmm0[0,2],xmm1[0,3]
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; CHECK-NEXT: paddd %xmm2, %xmm0
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; CHECK-NEXT: retq
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entry:
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%a32 = zext <12 x i16> %a to <12 x i32>
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%b32 = zext <12 x i16> %b to <12 x i32>
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%prod12 = mul nuw <12 x i32> %a32, %b32
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%odd12 = shufflevector <12 x i32> %prod12, <12 x i32> undef, <6 x i32> <i32
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1, i32 3, i32 5, i32 7, i32 9, i32 11>
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%even12 = shufflevector <12 x i32> %prod12, <12 x i32> undef, <6 x i32> <i32
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0, i32 2, i32 4, i32 6, i32 8, i32 10>
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%prod6 = add <6 x i32> %odd12, %even12
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%odd6 = shufflevector <6 x i32> %prod6, <6 x i32> undef, <3 x i32> <i32 1,
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i32 3, i32 5>
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%even6 = shufflevector <6 x i32> %prod6, <6 x i32> undef, <3 x i32> <i32 0,
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i32 2, i32 4>
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%result = add <3 x i32> %odd6, %even6
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ret <3 x i32> %result
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}
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