[X86][AVX512] Add support for lowering shuffles to VSHUFPD
llvm-svn: 274520
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@ -11778,6 +11778,11 @@ static SDValue lowerV8F64VectorShuffle(const SDLoc &DL, ArrayRef<int> Mask,
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lowerVectorShuffleWithUNPCK(DL, MVT::v8f64, Mask, V1, V2, DAG))
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return Unpck;
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// Check if the blend happens to exactly fit that of SHUFPD.
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if (SDValue Op =
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lowerVectorShuffleWithSHUFPD(DL, MVT::v8f64, Mask, V1, V2, DAG))
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return Op;
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return lowerVectorShuffleWithPERMV(DL, MVT::v8f64, Mask, V1, V2, DAG);
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}
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@ -149,8 +149,7 @@ define <8 x double> @test6(<8 x double> %A, <8 x double> %B) {
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; AVX512: # BB#0:
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; AVX512-NEXT: vaddpd %zmm1, %zmm0, %zmm2
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; AVX512-NEXT: vsubpd %zmm1, %zmm0, %zmm0
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; AVX512-NEXT: vmovdqa64 {{.*#+}} zmm1 = [0,9,2,11,4,13,6,15]
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; AVX512-NEXT: vpermt2pd %zmm2, %zmm1, %zmm0
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; AVX512-NEXT: vshufpd {{.*#+}} zmm0 = zmm0[0],zmm2[1],zmm0[2],zmm2[3],zmm0[4],zmm2[5],zmm0[6],zmm2[7]
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; AVX512-NEXT: retq
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%add = fadd <8 x double> %A, %B
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%sub = fsub <8 x double> %A, %B
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@ -217,16 +217,12 @@ define <8 x double> @shuffle_v8f64_81a3c5e7(<8 x double> %a, <8 x double> %b) {
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;
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; AVX512F-LABEL: shuffle_v8f64_81a3c5e7:
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; AVX512F: # BB#0:
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; AVX512F-NEXT: vmovdqa64 {{.*#+}} zmm2 = [0,9,2,11,4,13,6,15]
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; AVX512F-NEXT: vpermt2pd %zmm0, %zmm2, %zmm1
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; AVX512F-NEXT: vmovaps %zmm1, %zmm0
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; AVX512F-NEXT: vshufpd {{.*#+}} zmm0 = zmm1[0],zmm0[1],zmm1[2],zmm0[3],zmm1[4],zmm0[5],zmm1[6],zmm0[7]
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; AVX512F-NEXT: retq
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;
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; AVX512F-32-LABEL: shuffle_v8f64_81a3c5e7:
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; AVX512F-32: # BB#0:
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; AVX512F-32-NEXT: vmovdqa64 {{.*#+}} zmm2 = [0,0,9,0,2,0,11,0,4,0,13,0,6,0,15,0]
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; AVX512F-32-NEXT: vpermt2pd %zmm0, %zmm2, %zmm1
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; AVX512F-32-NEXT: vmovaps %zmm1, %zmm0
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; AVX512F-32-NEXT: vshufpd {{.*#+}} zmm0 = zmm1[0],zmm0[1],zmm1[2],zmm0[3],zmm1[4],zmm0[5],zmm1[6],zmm0[7]
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; AVX512F-32-NEXT: retl
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%shuffle = shufflevector <8 x double> %a, <8 x double> %b, <8 x i32> <i32 8, i32 1, i32 10, i32 3, i32 12, i32 5, i32 14, i32 7>
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ret <8 x double> %shuffle
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