[X86][AVX2] Enabled shuffle matching for the AVX2 zero extension (128bit -> 256bit...

Differential Revision: http://reviews.llvm.org/D7251

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228014 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index bf216c767d2cec636011cf662d9e592a16caa1cd..d35e35e8aa294289eea259eaf2879eaaa430774d 100644 (file)
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -7814,10 +7814,11 @@ static SDValue lowerVectorShuffleAsByteShift(SDLoc DL, MVT VT, SDValue V1,
 /// stride, produce either a zero or any extension based on the available
 /// features of the subtarget.
 static SDValue lowerVectorShuffleAsSpecificZeroOrAnyExtend(
-    SDLoc DL, MVT VT, int NumElements, int Scale, bool AnyExt, SDValue InputV,
+    SDLoc DL, MVT VT, int Scale, bool AnyExt, SDValue InputV,
     const X86Subtarget *Subtarget, SelectionDAG &DAG) {
   assert(Scale > 1 && "Need a scale to extend.");
-  int EltBits = VT.getSizeInBits() / NumElements;
+  int NumElements = VT.getVectorNumElements();
+  int EltBits = VT.getScalarSizeInBits();
   assert((EltBits == 8 || EltBits == 16 || EltBits == 32) &&
          "Only 8, 16, and 32 bit elements can be extended.");
   assert(Scale * EltBits <= 64 && "Cannot zero extend past 64 bits.");
@@ -7825,10 +7826,8 @@ static SDValue lowerVectorShuffleAsSpecificZeroOrAnyExtend(
   // Found a valid zext mask! Try various lowering strategies based on the
   // input type and available ISA extensions.
   if (Subtarget->hasSSE41()) {
-    MVT InputVT = MVT::getVectorVT(MVT::getIntegerVT(EltBits), NumElements);
     MVT ExtVT = MVT::getVectorVT(MVT::getIntegerVT(EltBits * Scale),
                                  NumElements / Scale);
-    InputV = DAG.getNode(ISD::BITCAST, DL, InputVT, InputV);
     return DAG.getNode(ISD::BITCAST, DL, VT,
                        DAG.getNode(X86ISD::VZEXT, DL, ExtVT, InputV));
   }
@@ -7886,7 +7885,7 @@ static SDValue lowerVectorShuffleAsSpecificZeroOrAnyExtend(
   return DAG.getNode(ISD::BITCAST, DL, VT, InputV);
 }
 
-/// \brief Try to lower a vector shuffle as a zero extension on any micrarch.
+/// \brief Try to lower a vector shuffle as a zero extension on any microarch.
 ///
 /// This routine will try to do everything in its power to cleverly lower
 /// a shuffle which happens to match the pattern of a zero extend. It doesn't
@@ -7904,7 +7903,10 @@ static SDValue lowerVectorShuffleAsZeroOrAnyExtend(
   SmallBitVector Zeroable = computeZeroableShuffleElements(Mask, V1, V2);
 
   int Bits = VT.getSizeInBits();
-  int NumElements = Mask.size();
+  int EltBits = VT.getScalarSizeInBits();
+  int NumElements = VT.getVectorNumElements();
+  assert(EltBits <= 32 && "Exceeds 32-bit integer zero extension limit");
+  assert(Mask.size() == NumElements && "Unexpected shuffle mask size");
 
   // Define a helper function to check a particular ext-scale and lower to it if
   // valid.
@@ -7943,7 +7945,7 @@ static SDValue lowerVectorShuffleAsZeroOrAnyExtend(
       return SDValue();
 
     return lowerVectorShuffleAsSpecificZeroOrAnyExtend(
-        DL, VT, NumElements, Scale, AnyExt, InputV, Subtarget, DAG);
+        DL, VT, Scale, AnyExt, InputV, Subtarget, DAG);
   };
 
   // The widest scale possible for extending is to a 64-bit integer.
@@ -10532,6 +10534,13 @@ static SDValue lowerV8I32VectorShuffle(SDValue Op, SDValue V1, SDValue V2,
   assert(Mask.size() == 8 && "Unexpected mask size for v8 shuffle!");
   assert(Subtarget->hasAVX2() && "We can only lower v8i32 with AVX2!");
 
+  // Whenever we can lower this as a zext, that instruction is strictly faster
+  // than any alternative. It also allows us to fold memory operands into the
+  // shuffle in many cases.
+  if (SDValue ZExt = lowerVectorShuffleAsZeroOrAnyExtend(DL, MVT::v8i32, V1, V2,
+                                                         Mask, Subtarget, DAG))
+    return ZExt;
+
   if (SDValue Blend = lowerVectorShuffleAsBlend(DL, MVT::v8i32, V1, V2, Mask,
                                                 Subtarget, DAG))
     return Blend;
@@ -10596,6 +10605,13 @@ static SDValue lowerV16I16VectorShuffle(SDValue Op, SDValue V1, SDValue V2,
   assert(Mask.size() == 16 && "Unexpected mask size for v16 shuffle!");
   assert(Subtarget->hasAVX2() && "We can only lower v16i16 with AVX2!");
 
+  // Whenever we can lower this as a zext, that instruction is strictly faster
+  // than any alternative. It also allows us to fold memory operands into the
+  // shuffle in many cases.
+  if (SDValue ZExt = lowerVectorShuffleAsZeroOrAnyExtend(DL, MVT::v16i16, V1, V2,
+                                                         Mask, Subtarget, DAG))
+    return ZExt;
+
   // Check for being able to broadcast a single element.
   if (SDValue Broadcast = lowerVectorShuffleAsBroadcast(MVT::v16i16, DL, V1,
                                                         Mask, Subtarget, DAG))
@@ -10671,6 +10687,13 @@ static SDValue lowerV32I8VectorShuffle(SDValue Op, SDValue V1, SDValue V2,
   assert(Mask.size() == 32 && "Unexpected mask size for v32 shuffle!");
   assert(Subtarget->hasAVX2() && "We can only lower v32i8 with AVX2!");
 
+  // Whenever we can lower this as a zext, that instruction is strictly faster
+  // than any alternative. It also allows us to fold memory operands into the
+  // shuffle in many cases.
+  if (SDValue ZExt = lowerVectorShuffleAsZeroOrAnyExtend(DL, MVT::v32i8, V1, V2,
+                                                         Mask, Subtarget, DAG))
+    return ZExt;
+
   // Check for being able to broadcast a single element.
   if (SDValue Broadcast = lowerVectorShuffleAsBroadcast(MVT::v32i8, DL, V1,
                                                         Mask, Subtarget, DAG))

diff --git a/test/CodeGen/X86/vector-shuffle-256-v16.ll b/test/CodeGen/X86/vector-shuffle-256-v16.ll
index 7c38149a700cf2d1a58dd88a58b65bb563b267f2..a7f0eac2e9a279bdd6d522557cf2d644f16ce190 100644 (file)
--- a/test/CodeGen/X86/vector-shuffle-256-v16.ll
+++ b/test/CodeGen/X86/vector-shuffle-256-v16.ll
@@ -1362,3 +1362,43 @@ define <16 x i16> @shuffle_v16i16_00_16_01_17_02_18_03_19_04_20_05_21_06_22_07_2
   %shuffle = shufflevector <16 x i16> %a, <16 x i16> %b, <16 x i32> <i32 0, i32 16, i32 1, i32 17, i32 2, i32 18, i32 3, i32 19, i32 4, i32 20, i32 5, i32 21, i32 6, i32 22, i32 7, i32 23>
   ret <16 x i16> %shuffle
 }
+
+define <16 x i16> @shuffle_v16i16_16_zz_zz_zz_17_zz_zz_zz_18_zz_zz_zz_19_zz_zz_zz(<16 x i16> %a) {
+; AVX1-LABEL: shuffle_v16i16_16_zz_zz_zz_17_zz_zz_zz_18_zz_zz_zz_19_zz_zz_zz:
+; AVX1:       # BB#0:
+; AVX1-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX1-NEXT:    vpunpcklwd {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1],xmm0[2],xmm1[2],xmm0[3],xmm1[3]
+; AVX1-NEXT:    vpshufb {{.*#+}} xmm2 = xmm0[8,9,2,3,12,13,2,3,8,9,12,13,12,13,14,15]
+; AVX1-NEXT:    vpshuflw {{.*#+}} xmm1 = xmm1[0,0,0,0,4,5,6,7]
+; AVX1-NEXT:    vpunpcklwd {{.*#+}} xmm2 = xmm2[0],xmm1[0],xmm2[1],xmm1[1],xmm2[2],xmm1[2],xmm2[3],xmm1[3]
+; AVX1-NEXT:    vpshuflw {{.*#+}} xmm0 = xmm0[0,1,2,1,4,5,6,7]
+; AVX1-NEXT:    vpunpcklwd {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1],xmm0[2],xmm1[2],xmm0[3],xmm1[3]
+; AVX1-NEXT:    vinsertf128 $1, %xmm2, %ymm0, %ymm0
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: shuffle_v16i16_16_zz_zz_zz_17_zz_zz_zz_18_zz_zz_zz_19_zz_zz_zz:
+; AVX2:       # BB#0:
+; AVX2-NEXT:    vpmovzxwq {{.*#+}} ymm0 = xmm0[0],zero,zero,zero,xmm0[1],zero,zero,zero,xmm0[2],zero,zero,zero,xmm0[3],zero,zero,zero
+; AVX2-NEXT:    retq
+  %shuffle = shufflevector <16 x i16> zeroinitializer, <16 x i16> %a, <16 x i32> <i32 16, i32 0, i32 0, i32 0, i32 17, i32 0, i32 0, i32 0, i32 18, i32 0, i32 0, i32 0, i32 19, i32 0, i32 0, i32 0>
+  ret <16 x i16> %shuffle
+}
+
+define <16 x i16> @shuffle_v16i16_16_zz_17_zz_18_zz_19_zz_20_zz_21_zz_22_zz_22_zz(<16 x i16> %a) {
+; AVX1-LABEL: shuffle_v16i16_16_zz_17_zz_18_zz_19_zz_20_zz_21_zz_22_zz_22_zz:
+; AVX1:       # BB#0:
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[2,3,0,1]
+; AVX1-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; AVX1-NEXT:    vpshuflw {{.*#+}} xmm2 = xmm2[0,0,0,0,4,5,6,7]
+; AVX1-NEXT:    vpunpcklwd {{.*#+}} xmm1 = xmm1[0],xmm2[0],xmm1[1],xmm2[1],xmm1[2],xmm2[2],xmm1[3],xmm2[3]
+; AVX1-NEXT:    vpunpcklwd {{.*#+}} xmm0 = xmm0[0],xmm2[0],xmm0[1],xmm2[1],xmm0[2],xmm2[2],xmm0[3],xmm2[3]
+; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: shuffle_v16i16_16_zz_17_zz_18_zz_19_zz_20_zz_21_zz_22_zz_22_zz:
+; AVX2:       # BB#0:
+; AVX2-NEXT:    vpmovzxwd {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero
+; AVX2-NEXT:    retq
+  %shuffle = shufflevector <16 x i16> zeroinitializer, <16 x i16> %a, <16 x i32> <i32 16, i32 0, i32 17, i32 0, i32 18, i32 0, i32 19, i32 0, i32 20, i32 0, i32 21, i32 0, i32 22, i32 0, i32 23, i32 0>
+  ret <16 x i16> %shuffle
+}

diff --git a/test/CodeGen/X86/vector-shuffle-256-v32.ll b/test/CodeGen/X86/vector-shuffle-256-v32.ll
index c7f4c3512fbaf3488e932fd62573249761e0c24c..dbc4d5864ee1d166bba0b1b2f1abce23641770d9 100644 (file)
--- a/test/CodeGen/X86/vector-shuffle-256-v32.ll
+++ b/test/CodeGen/X86/vector-shuffle-256-v32.ll
@@ -1654,3 +1654,71 @@ define <32 x i8> @shuffle_v32i8_00_32_01_33_02_34_03_35_04_36_05_37_06_38_07_39_
   %shuffle = shufflevector <32 x i8> %a, <32 x i8> %b, <32 x i32> <i32 0, i32 32, i32 1, i32 33, i32 2, i32 34, i32 3, i32 35, i32 4, i32 36, i32 5, i32 37, i32 6, i32 38, i32 7, i32 39, i32 8, i32 40, i32 9, i32 41, i32 10, i32 42, i32 11, i32 43, i32 12, i32 44, i32 13, i32 45, i32 14, i32 46, i32 15, i32 47>
   ret <32 x i8> %shuffle
 }
+
+define <32 x i8> @shuffle_v32i8_32_zz_zz_zz_zz_zz_zz_zz_33_zz_zz_zz_zz_zz_zz_zz_34_zz_zz_zz_zz_zz_zz_zz_35_zz_zz_zz_zz_zz_zz_zz(<32 x i8> %a) {
+; AVX1-LABEL: shuffle_v32i8_32_zz_zz_zz_zz_zz_zz_zz_33_zz_zz_zz_zz_zz_zz_zz_34_zz_zz_zz_zz_zz_zz_zz_35_zz_zz_zz_zz_zz_zz_zz:
+; AVX1:       # BB#0:
+; AVX1-NEXT:    vpshufb {{.*#+}} xmm1 = xmm0[2],zero,zero,zero,xmm0[3],zero,zero,zero,xmm0[u,u,u,u,u,u,u,u]
+; AVX1-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; AVX1-NEXT:    vpshufb {{.*#+}} xmm3 = zero,xmm2[0,0,0],zero,xmm2[0,0,0,u,u,u,u,u,u,u,u]
+; AVX1-NEXT:    vpor %xmm1, %xmm3, %xmm1
+; AVX1-NEXT:    vpunpcklbw {{.*#+}} xmm2 = xmm2[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
+; AVX1-NEXT:    vpshuflw {{.*#+}} xmm2 = xmm2[0,0,0,0,4,5,6,7]
+; AVX1-NEXT:    vpunpcklbw {{.*#+}} xmm1 = xmm1[0],xmm2[0],xmm1[1],xmm2[1],xmm1[2],xmm2[2],xmm1[3],xmm2[3],xmm1[4],xmm2[4],xmm1[5],xmm2[5],xmm1[6],xmm2[6],xmm1[7],xmm2[7]
+; AVX1-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0],zero,zero,zero,xmm0[1],zero,zero,zero,xmm0[u,u,u,u,u,u,u,u]
+; AVX1-NEXT:    vpor %xmm0, %xmm3, %xmm0
+; AVX1-NEXT:    vpunpcklbw {{.*#+}} xmm0 = xmm0[0],xmm2[0],xmm0[1],xmm2[1],xmm0[2],xmm2[2],xmm0[3],xmm2[3],xmm0[4],xmm2[4],xmm0[5],xmm2[5],xmm0[6],xmm2[6],xmm0[7],xmm2[7]
+; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
+; AVX1-NEXT:    retq
+
+;
+; AVX2-LABEL: shuffle_v32i8_32_zz_zz_zz_zz_zz_zz_zz_33_zz_zz_zz_zz_zz_zz_zz_34_zz_zz_zz_zz_zz_zz_zz_35_zz_zz_zz_zz_zz_zz_zz:
+; AVX2:       # BB#0:
+; AVX2-NEXT:    vpmovzxbq {{.*#+}} ymm0 = xmm0[0],zero,zero,zero,zero,zero,zero,zero,xmm0[1],zero,zero,zero,zero,zero,zero,zero,xmm0[2],zero,zero,zero,zero,zero,zero,zero,xmm0[3],zero,zero,zero,zero,zero,zero,zero
+; AVX2-NEXT:    retq
+  %shuffle = shufflevector <32 x i8> zeroinitializer, <32 x i8> %a, <32 x i32> <i32 32, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 33, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 34, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 35, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0>
+  ret <32 x i8> %shuffle
+}
+
+define <32 x i8> @shuffle_v32i8_32_zz_zz_zz_33_zz_zz_zz_34_zz_zz_zz_35_zz_zz_zz_36_zz_zz_zz_37_zz_zz_zz_38_zz_zz_zz_39_zz_zz_zz(<32 x i8> %a) {
+; AVX1-LABEL: shuffle_v32i8_32_zz_zz_zz_33_zz_zz_zz_34_zz_zz_zz_35_zz_zz_zz_36_zz_zz_zz_37_zz_zz_zz_38_zz_zz_zz_39_zz_zz_zz:
+; AVX1:       # BB#0:
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[1,1,2,3]
+; AVX1-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; AVX1-NEXT:    vpunpcklbw {{.*#+}} xmm2 = xmm2[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
+; AVX1-NEXT:    vpunpcklwd {{.*#+}} xmm3 = xmm2[0,0,1,1,2,2,3,3]
+; AVX1-NEXT:    vpunpcklbw {{.*#+}} xmm1 = xmm1[0],xmm3[0],xmm1[1],xmm3[1],xmm1[2],xmm3[2],xmm1[3],xmm3[3],xmm1[4],xmm3[4],xmm1[5],xmm3[5],xmm1[6],xmm3[6],xmm1[7],xmm3[7]
+; AVX1-NEXT:    vpshuflw {{.*#+}} xmm2 = xmm2[0,0,0,0,4,5,6,7]
+; AVX1-NEXT:    vpunpcklbw {{.*#+}} xmm1 = xmm1[0],xmm2[0],xmm1[1],xmm2[1],xmm1[2],xmm2[2],xmm1[3],xmm2[3],xmm1[4],xmm2[4],xmm1[5],xmm2[5],xmm1[6],xmm2[6],xmm1[7],xmm2[7]
+; AVX1-NEXT:    vpunpcklbw {{.*#+}} xmm0 = xmm0[0],xmm3[0],xmm0[1],xmm3[1],xmm0[2],xmm3[2],xmm0[3],xmm3[3],xmm0[4],xmm3[4],xmm0[5],xmm3[5],xmm0[6],xmm3[6],xmm0[7],xmm3[7]
+; AVX1-NEXT:    vpunpcklbw {{.*#+}} xmm0 = xmm0[0],xmm2[0],xmm0[1],xmm2[1],xmm0[2],xmm2[2],xmm0[3],xmm2[3],xmm0[4],xmm2[4],xmm0[5],xmm2[5],xmm0[6],xmm2[6],xmm0[7],xmm2[7]
+; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: shuffle_v32i8_32_zz_zz_zz_33_zz_zz_zz_34_zz_zz_zz_35_zz_zz_zz_36_zz_zz_zz_37_zz_zz_zz_38_zz_zz_zz_39_zz_zz_zz:
+; AVX2:       # BB#0:
+; AVX2-NEXT:    vpmovzxbd {{.*#+}} ymm0 = xmm0[0],zero,zero,zero,xmm0[1],zero,zero,zero,xmm0[2],zero,zero,zero,xmm0[3],zero,zero,zero,xmm0[4],zero,zero,zero,xmm0[5],zero,zero,zero,xmm0[6],zero,zero,zero,xmm0[7],zero,zero,zero
+; AVX2-NEXT:    retq
+  %shuffle = shufflevector <32 x i8> zeroinitializer, <32 x i8> %a, <32 x i32> <i32 32, i32 0, i32 0, i32 0, i32 33, i32 0, i32 0, i32 0, i32 34, i32 0, i32 0, i32 0, i32 35, i32 0, i32 0, i32 0, i32 36, i32 0, i32 0, i32 0, i32 37, i32 0, i32 0, i32 0, i32 38, i32 0, i32 0, i32 0, i32 39, i32 0, i32 0, i32 0>
+  ret <32 x i8> %shuffle
+}
+
+define <32 x i8> @shuffle_v32i8_32_zz_33_zz_34_zz_35_zz_36_zz_37_zz_38_zz_39_zz_40_zz_41_zz_42_zz_43_zz_44_zz_45_zz_46_zz_47_zz(<32 x i8> %a) {
+; AVX1-LABEL: shuffle_v32i8_32_zz_33_zz_34_zz_35_zz_36_zz_37_zz_38_zz_39_zz_40_zz_41_zz_42_zz_43_zz_44_zz_45_zz_46_zz_47_zz:
+; AVX1:       # BB#0:
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[2,3,0,1]
+; AVX1-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; AVX1-NEXT:    vpunpcklbw {{.*#+}} xmm2 = xmm2[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
+; AVX1-NEXT:    vpshuflw {{.*#+}} xmm2 = xmm2[0,0,0,0,4,5,6,7]
+; AVX1-NEXT:    vpunpcklbw {{.*#+}} xmm1 = xmm1[0],xmm2[0],xmm1[1],xmm2[1],xmm1[2],xmm2[2],xmm1[3],xmm2[3],xmm1[4],xmm2[4],xmm1[5],xmm2[5],xmm1[6],xmm2[6],xmm1[7],xmm2[7]
+; AVX1-NEXT:    vpunpcklbw {{.*#+}} xmm0 = xmm0[0],xmm2[0],xmm0[1],xmm2[1],xmm0[2],xmm2[2],xmm0[3],xmm2[3],xmm0[4],xmm2[4],xmm0[5],xmm2[5],xmm0[6],xmm2[6],xmm0[7],xmm2[7]
+; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: shuffle_v32i8_32_zz_33_zz_34_zz_35_zz_36_zz_37_zz_38_zz_39_zz_40_zz_41_zz_42_zz_43_zz_44_zz_45_zz_46_zz_47_zz:
+; AVX2:       # BB#0:
+; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
+; AVX2-NEXT:    retq
+  %shuffle = shufflevector <32 x i8> zeroinitializer, <32 x i8> %a, <32 x i32> <i32 32, i32 0, i32 33, i32 0, i32 34, i32 0, i32 35, i32 0, i32 36, i32 0, i32 37, i32 0, i32 38, i32 0, i32 39, i32 0, i32 40, i32 0, i32 41, i32 0, i32 42, i32 0, i32 43, i32 0, i32 44, i32 0, i32 45, i32 0, i32 46, i32 0, i32 47, i32 0>
+  ret <32 x i8> %shuffle
+}

diff --git a/test/CodeGen/X86/vector-shuffle-256-v8.ll b/test/CodeGen/X86/vector-shuffle-256-v8.ll
index ffcb4171683a62cff84efb8817149204772724ad..70a45cece05bcc9b048cd13433069f47cf836444 100644 (file)
--- a/test/CodeGen/X86/vector-shuffle-256-v8.ll
+++ b/test/CodeGen/X86/vector-shuffle-256-v8.ll
@@ -1123,8 +1123,7 @@ define <8 x i32> @shuffle_v8i32_08192a3b(<8 x i32> %a, <8 x i32> %b) {
 ; AVX2:       # BB#0:
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = <u,0,u,1,u,2,u,3>
 ; AVX2-NEXT:    vpermd %ymm1, %ymm2, %ymm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = <0,u,1,u,2,u,3,u>
-; AVX2-NEXT:    vpermd %ymm0, %ymm2, %ymm0
+; AVX2-NEXT:    vpmovzxdq {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
 ; AVX2-NEXT:    vpblendd {{.*#+}} ymm0 = ymm0[0],ymm1[1],ymm0[2],ymm1[3],ymm0[4],ymm1[5],ymm0[6],ymm1[7]
 ; AVX2-NEXT:    retq
   %shuffle = shufflevector <8 x i32> %a, <8 x i32> %b, <8 x i32> <i32 0, i32 8, i32 1, i32 9, i32 2, i32 10, i32 3, i32 11>
@@ -1164,8 +1163,7 @@ define <8 x i32> @shuffle_v8i32_091b2d3f(<8 x i32> %a, <8 x i32> %b) {
 ;
 ; AVX2-LABEL: shuffle_v8i32_091b2d3f:
 ; AVX2:       # BB#0:
-; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = <0,u,1,u,2,u,3,u>
-; AVX2-NEXT:    vpermd %ymm0, %ymm2, %ymm0
+; AVX2-NEXT:    vpmovzxdq {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
 ; AVX2-NEXT:    vpblendd {{.*#+}} ymm0 = ymm0[0],ymm1[1],ymm0[2],ymm1[3],ymm0[4],ymm1[5],ymm0[6],ymm1[7]
 ; AVX2-NEXT:    retq
   %shuffle = shufflevector <8 x i32> %a, <8 x i32> %b, <8 x i32> <i32 0, i32 9, i32 1, i32 11, i32 2, i32 13, i32 3, i32 15>