Index: lib/CodeGen/SelectionDAG/TargetLowering.cpp
===================================================================
--- lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -1532,12 +1532,20 @@
     break;
   }
   case ISD::VSELECT: {
-    APInt DemandedLHS(DemandedElts);
-    APInt DemandedRHS(DemandedElts);
-
-    // TODO - add support for constant vselect masks.
+    // Try to transform the select condition based on the current demanded
+    // elements.
+    // TODO: If a condition element is undef, we can choose from one arm of the
+    //       select (and if one arm is undef, then we can propagate that to the
+    //       result).
+    // TODO - add support for constant vselect masks (see IR version of this).
+    APInt UnusedUndef, UnusedZero;
+    if (SimplifyDemandedVectorElts(Op.getOperand(0), DemandedElts, UnusedUndef,
+                                   UnusedZero, TLO, Depth + 1))
+      return true;
 
     // See if we can simplify either vselect operand.
+    APInt DemandedLHS(DemandedElts);
+    APInt DemandedRHS(DemandedElts);
     APInt UndefLHS, ZeroLHS;
     APInt UndefRHS, ZeroRHS;
     if (SimplifyDemandedVectorElts(Op.getOperand(1), DemandedLHS, UndefLHS,
Index: test/CodeGen/X86/horizontal-reduce-smax.ll
===================================================================
--- test/CodeGen/X86/horizontal-reduce-smax.ll
+++ test/CodeGen/X86/horizontal-reduce-smax.ll
@@ -469,9 +469,6 @@
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X86-AVX1-NEXT:    vpcmpgtq %xmm1, %xmm0, %xmm2
-; X86-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; X86-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm3
-; X86-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vmovd %xmm0, %eax
 ; X86-AVX1-NEXT:    vpextrd $1, %xmm0, %edx
@@ -548,9 +545,6 @@
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X64-AVX1-NEXT:    vpcmpgtq %xmm1, %xmm0, %xmm2
-; X64-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; X64-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm3
-; X64-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vmovq %xmm0, %rax
 ; X64-AVX1-NEXT:    vzeroupper
@@ -1159,9 +1153,6 @@
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X86-AVX1-NEXT:    vpcmpgtq %xmm1, %xmm0, %xmm2
-; X86-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; X86-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm3
-; X86-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vmovd %xmm0, %eax
 ; X86-AVX1-NEXT:    vpextrd $1, %xmm0, %edx
@@ -1283,9 +1274,6 @@
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X64-AVX1-NEXT:    vpcmpgtq %xmm1, %xmm0, %xmm2
-; X64-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; X64-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm3
-; X64-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vmovq %xmm0, %rax
 ; X64-AVX1-NEXT:    vzeroupper
Index: test/CodeGen/X86/horizontal-reduce-smin.ll
===================================================================
--- test/CodeGen/X86/horizontal-reduce-smin.ll
+++ test/CodeGen/X86/horizontal-reduce-smin.ll
@@ -472,9 +472,6 @@
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X86-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm1, %xmm2
-; X86-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; X86-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm0, %xmm3
-; X86-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vmovd %xmm0, %eax
 ; X86-AVX1-NEXT:    vpextrd $1, %xmm0, %edx
@@ -552,9 +549,6 @@
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X64-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm1, %xmm2
-; X64-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; X64-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm0, %xmm3
-; X64-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vmovq %xmm0, %rax
 ; X64-AVX1-NEXT:    vzeroupper
@@ -1163,9 +1157,6 @@
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X86-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm1, %xmm2
-; X86-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; X86-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm0, %xmm3
-; X86-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vmovd %xmm0, %eax
 ; X86-AVX1-NEXT:    vpextrd $1, %xmm0, %edx
@@ -1287,9 +1278,6 @@
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X64-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm1, %xmm2
-; X64-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; X64-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm0, %xmm3
-; X64-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vmovq %xmm0, %rax
 ; X64-AVX1-NEXT:    vzeroupper
Index: test/CodeGen/X86/horizontal-reduce-umax.ll
===================================================================
--- test/CodeGen/X86/horizontal-reduce-umax.ll
+++ test/CodeGen/X86/horizontal-reduce-umax.ll
@@ -535,12 +535,8 @@
 ; X86-AVX1-NEXT:    vblendvpd %ymm3, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X86-AVX1-NEXT:    vxorpd %xmm2, %xmm0, %xmm3
-; X86-AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm4
-; X86-AVX1-NEXT:    vpcmpgtq %xmm4, %xmm3, %xmm3
-; X86-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; X86-AVX1-NEXT:    vpxor %xmm2, %xmm4, %xmm2
-; X86-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm2, %xmm2
-; X86-AVX1-NEXT:    vinsertf128 $1, %xmm2, %ymm3, %ymm2
+; X86-AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm2
+; X86-AVX1-NEXT:    vpcmpgtq %xmm2, %xmm3, %xmm2
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vmovd %xmm0, %eax
 ; X86-AVX1-NEXT:    vpextrd $1, %xmm0, %edx
@@ -631,12 +627,8 @@
 ; X64-AVX1-NEXT:    vblendvpd %ymm3, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X64-AVX1-NEXT:    vxorpd %xmm2, %xmm0, %xmm3
-; X64-AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm4
-; X64-AVX1-NEXT:    vpcmpgtq %xmm4, %xmm3, %xmm3
-; X64-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; X64-AVX1-NEXT:    vpxor %xmm2, %xmm4, %xmm2
-; X64-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm2, %xmm2
-; X64-AVX1-NEXT:    vinsertf128 $1, %xmm2, %ymm3, %ymm2
+; X64-AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm2
+; X64-AVX1-NEXT:    vpcmpgtq %xmm2, %xmm3, %xmm2
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vmovq %xmm0, %rax
 ; X64-AVX1-NEXT:    vzeroupper
@@ -1270,12 +1262,8 @@
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X86-AVX1-NEXT:    vxorpd %xmm3, %xmm0, %xmm2
-; X86-AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm4
-; X86-AVX1-NEXT:    vpcmpgtq %xmm4, %xmm2, %xmm2
-; X86-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; X86-AVX1-NEXT:    vpxor %xmm3, %xmm4, %xmm3
-; X86-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm3
-; X86-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
+; X86-AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm3
+; X86-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm2, %xmm2
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vmovd %xmm0, %eax
 ; X86-AVX1-NEXT:    vpextrd $1, %xmm0, %edx
@@ -1422,12 +1410,8 @@
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X64-AVX1-NEXT:    vxorpd %xmm3, %xmm0, %xmm2
-; X64-AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm4
-; X64-AVX1-NEXT:    vpcmpgtq %xmm4, %xmm2, %xmm2
-; X64-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; X64-AVX1-NEXT:    vpxor %xmm3, %xmm4, %xmm3
-; X64-AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm3
-; X64-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
+; X64-AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm3
+; X64-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm2, %xmm2
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vmovq %xmm0, %rax
 ; X64-AVX1-NEXT:    vzeroupper
Index: test/CodeGen/X86/horizontal-reduce-umin.ll
===================================================================
--- test/CodeGen/X86/horizontal-reduce-umin.ll
+++ test/CodeGen/X86/horizontal-reduce-umin.ll
@@ -473,12 +473,8 @@
 ; X86-AVX1-NEXT:    vblendvpd %ymm3, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X86-AVX1-NEXT:    vxorpd %xmm2, %xmm0, %xmm3
-; X86-AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm4
-; X86-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm4, %xmm3
-; X86-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; X86-AVX1-NEXT:    vpxor %xmm2, %xmm4, %xmm2
-; X86-AVX1-NEXT:    vpcmpgtq %xmm2, %xmm0, %xmm2
-; X86-AVX1-NEXT:    vinsertf128 $1, %xmm2, %ymm3, %ymm2
+; X86-AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm2
+; X86-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm2, %xmm2
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vmovd %xmm0, %eax
 ; X86-AVX1-NEXT:    vpextrd $1, %xmm0, %edx
@@ -571,12 +567,8 @@
 ; X64-AVX1-NEXT:    vblendvpd %ymm3, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X64-AVX1-NEXT:    vxorpd %xmm2, %xmm0, %xmm3
-; X64-AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm4
-; X64-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm4, %xmm3
-; X64-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; X64-AVX1-NEXT:    vpxor %xmm2, %xmm4, %xmm2
-; X64-AVX1-NEXT:    vpcmpgtq %xmm2, %xmm0, %xmm2
-; X64-AVX1-NEXT:    vinsertf128 $1, %xmm2, %ymm3, %ymm2
+; X64-AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm2
+; X64-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm2, %xmm2
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vmovq %xmm0, %rax
 ; X64-AVX1-NEXT:    vzeroupper
@@ -1172,12 +1164,8 @@
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X86-AVX1-NEXT:    vxorpd %xmm3, %xmm0, %xmm2
-; X86-AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm4
-; X86-AVX1-NEXT:    vpcmpgtq %xmm2, %xmm4, %xmm2
-; X86-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; X86-AVX1-NEXT:    vpxor %xmm3, %xmm4, %xmm3
-; X86-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm0, %xmm3
-; X86-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
+; X86-AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm3
+; X86-AVX1-NEXT:    vpcmpgtq %xmm2, %xmm3, %xmm2
 ; X86-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X86-AVX1-NEXT:    vmovd %xmm0, %eax
 ; X86-AVX1-NEXT:    vpextrd $1, %xmm0, %edx
@@ -1326,12 +1314,8 @@
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; X64-AVX1-NEXT:    vxorpd %xmm3, %xmm0, %xmm2
-; X64-AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm4
-; X64-AVX1-NEXT:    vpcmpgtq %xmm2, %xmm4, %xmm2
-; X64-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; X64-AVX1-NEXT:    vpxor %xmm3, %xmm4, %xmm3
-; X64-AVX1-NEXT:    vpcmpgtq %xmm3, %xmm0, %xmm3
-; X64-AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
+; X64-AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm3
+; X64-AVX1-NEXT:    vpcmpgtq %xmm2, %xmm3, %xmm2
 ; X64-AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; X64-AVX1-NEXT:    vmovq %xmm0, %rax
 ; X64-AVX1-NEXT:    vzeroupper
Index: test/CodeGen/X86/pr34592.ll
===================================================================
--- test/CodeGen/X86/pr34592.ll
+++ test/CodeGen/X86/pr34592.ll
@@ -19,31 +19,30 @@
 ; CHECK-NEXT:    vmovaps 80(%rbp), %ymm13
 ; CHECK-NEXT:    vmovaps 48(%rbp), %ymm14
 ; CHECK-NEXT:    vmovaps 16(%rbp), %ymm15
-; CHECK-NEXT:    vpblendd {{.*#+}} ymm2 = ymm6[0,1,2,3],ymm2[4,5,6,7]
+; CHECK-NEXT:    vpblendd {{.*#+}} ymm2 = ymm6[0,1,2,3,4,5],ymm2[6,7]
 ; CHECK-NEXT:    vxorps %xmm6, %xmm6, %xmm6
-; CHECK-NEXT:    vmovaps %ymm0, {{[-0-9]+}}(%r{{[sb]}}p) # 32-byte Spill
-; CHECK-NEXT:    vpblendd {{.*#+}} ymm0 = ymm6[0,1],ymm8[2,3,4,5,6,7]
-; CHECK-NEXT:    vpblendd {{.*#+}} ymm6 = ymm6[0,1],ymm11[2,3,4,5,6,7]
+; CHECK-NEXT:    vpblendd {{.*#+}} ymm11 = ymm6[0,1,2,3],ymm11[4,5],ymm6[6,7]
 ; CHECK-NEXT:    # kill: def $xmm9 killed $xmm9 killed $ymm9
-; CHECK-NEXT:    vmovdqa %xmm9, %xmm11
-; CHECK-NEXT:    # kill: def $ymm11 killed $xmm11
-; CHECK-NEXT:    vpalignr {{.*#+}} ymm6 = ymm2[8,9,10,11,12,13,14,15],ymm6[0,1,2,3,4,5,6,7],ymm2[24,25,26,27,28,29,30,31],ymm6[16,17,18,19,20,21,22,23]
-; CHECK-NEXT:    vpermq {{.*#+}} ymm6 = ymm6[2,3,2,0]
+; CHECK-NEXT:    vmovaps %ymm0, {{[-0-9]+}}(%r{{[sb]}}p) # 32-byte Spill
+; CHECK-NEXT:    vmovdqa %xmm9, %xmm0
+; CHECK-NEXT:    # kill: def $ymm0 killed $xmm0
+; CHECK-NEXT:    vpalignr {{.*#+}} ymm11 = ymm2[8,9,10,11,12,13,14,15],ymm11[0,1,2,3,4,5,6,7],ymm2[24,25,26,27,28,29,30,31],ymm11[16,17,18,19,20,21,22,23]
+; CHECK-NEXT:    vpermq {{.*#+}} ymm11 = ymm11[2,3,2,0]
 ; CHECK-NEXT:    vmovaps %ymm0, {{[-0-9]+}}(%r{{[sb]}}p) # 32-byte Spill
 ; CHECK-NEXT:    # implicit-def: $ymm0
 ; CHECK-NEXT:    vinserti128 $1, %xmm9, %ymm0, %ymm0
-; CHECK-NEXT:    vpblendd {{.*#+}} ymm0 = ymm6[0,1,2,3],ymm0[4,5],ymm6[6,7]
+; CHECK-NEXT:    vpblendd {{.*#+}} ymm0 = ymm11[0,1,2,3],ymm0[4,5],ymm11[6,7]
 ; CHECK-NEXT:    vmovaps %xmm2, %xmm9
 ; CHECK-NEXT:    # implicit-def: $ymm2
 ; CHECK-NEXT:    vinserti128 $1, %xmm9, %ymm2, %ymm2
-; CHECK-NEXT:    vmovaps {{[-0-9]+}}(%r{{[sb]}}p), %ymm6 # 32-byte Reload
-; CHECK-NEXT:    vpunpcklqdq {{.*#+}} ymm6 = ymm7[0],ymm6[0],ymm7[2],ymm6[2]
+; CHECK-NEXT:    vpblendd {{.*#+}} ymm6 = ymm7[0,1],ymm6[2,3],ymm7[4,5],ymm6[6,7]
 ; CHECK-NEXT:    vpermq {{.*#+}} ymm6 = ymm6[2,1,2,3]
 ; CHECK-NEXT:    vpblendd {{.*#+}} ymm2 = ymm6[0,1,2,3],ymm2[4,5,6,7]
 ; CHECK-NEXT:    vmovaps %xmm7, %xmm9
 ; CHECK-NEXT:    vpslldq {{.*#+}} xmm9 = zero,zero,zero,zero,zero,zero,zero,zero,xmm9[0,1,2,3,4,5,6,7]
 ; CHECK-NEXT:    # implicit-def: $ymm6
 ; CHECK-NEXT:    vmovaps %xmm9, %xmm6
+; CHECK-NEXT:    vmovaps {{[-0-9]+}}(%r{{[sb]}}p), %ymm11 # 32-byte Reload
 ; CHECK-NEXT:    vpalignr {{.*#+}} ymm11 = ymm11[8,9,10,11,12,13,14,15],ymm5[0,1,2,3,4,5,6,7],ymm11[24,25,26,27,28,29,30,31],ymm5[16,17,18,19,20,21,22,23]
 ; CHECK-NEXT:    vpermq {{.*#+}} ymm11 = ymm11[0,1,0,3]
 ; CHECK-NEXT:    vpblendd {{.*#+}} ymm6 = ymm6[0,1,2,3],ymm11[4,5,6,7]
@@ -56,9 +55,9 @@
 ; CHECK-NEXT:    vmovaps %ymm3, {{[-0-9]+}}(%r{{[sb]}}p) # 32-byte Spill
 ; CHECK-NEXT:    vmovaps %ymm6, %ymm3
 ; CHECK-NEXT:    vmovaps %ymm15, {{[-0-9]+}}(%r{{[sb]}}p) # 32-byte Spill
-; CHECK-NEXT:    vmovaps %ymm12, {{[-0-9]+}}(%r{{[sb]}}p) # 32-byte Spill
 ; CHECK-NEXT:    vmovaps %ymm13, {{[-0-9]+}}(%r{{[sb]}}p) # 32-byte Spill
 ; CHECK-NEXT:    vmovaps %ymm10, {{[-0-9]+}}(%r{{[sb]}}p) # 32-byte Spill
+; CHECK-NEXT:    vmovaps %ymm12, {{[-0-9]+}}(%r{{[sb]}}p) # 32-byte Spill
 ; CHECK-NEXT:    vmovaps %ymm4, {{[-0-9]+}}(%r{{[sb]}}p) # 32-byte Spill
 ; CHECK-NEXT:    vmovaps %ymm14, (%rsp) # 32-byte Spill
 ; CHECK-NEXT:    movq %rbp, %rsp
Index: test/CodeGen/X86/vector-reduce-smax.ll
===================================================================
--- test/CodeGen/X86/vector-reduce-smax.ll
+++ test/CodeGen/X86/vector-reduce-smax.ll
@@ -158,9 +158,6 @@
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX1-NEXT:    vpcmpgtq %xmm1, %xmm0, %xmm2
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm3
-; AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper
@@ -343,9 +340,6 @@
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX1-NEXT:    vpcmpgtq %xmm1, %xmm0, %xmm2
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm3
-; AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper
@@ -645,9 +639,6 @@
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX1-NEXT:    vpcmpgtq %xmm1, %xmm0, %xmm2
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm3
-; AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper
Index: test/CodeGen/X86/vector-reduce-smin.ll
===================================================================
--- test/CodeGen/X86/vector-reduce-smin.ll
+++ test/CodeGen/X86/vector-reduce-smin.ll
@@ -157,9 +157,6 @@
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX1-NEXT:    vpcmpgtq %xmm0, %xmm1, %xmm2
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpcmpgtq %xmm3, %xmm0, %xmm3
-; AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper
@@ -342,9 +339,6 @@
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX1-NEXT:    vpcmpgtq %xmm0, %xmm1, %xmm2
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpcmpgtq %xmm3, %xmm0, %xmm3
-; AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper
@@ -644,9 +638,6 @@
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX1-NEXT:    vpcmpgtq %xmm0, %xmm1, %xmm2
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpcmpgtq %xmm3, %xmm0, %xmm3
-; AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper
Index: test/CodeGen/X86/vector-reduce-umax.ll
===================================================================
--- test/CodeGen/X86/vector-reduce-umax.ll
+++ test/CodeGen/X86/vector-reduce-umax.ll
@@ -164,12 +164,8 @@
 ; AVX1-NEXT:    vblendvpd %ymm3, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX1-NEXT:    vxorpd %xmm2, %xmm0, %xmm3
-; AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm4
-; AVX1-NEXT:    vpcmpgtq %xmm4, %xmm3, %xmm3
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; AVX1-NEXT:    vpxor %xmm2, %xmm4, %xmm2
-; AVX1-NEXT:    vpcmpgtq %xmm0, %xmm2, %xmm2
-; AVX1-NEXT:    vinsertf128 $1, %xmm2, %ymm3, %ymm2
+; AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm2
+; AVX1-NEXT:    vpcmpgtq %xmm2, %xmm3, %xmm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper
@@ -364,12 +360,8 @@
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX1-NEXT:    vxorpd %xmm3, %xmm0, %xmm2
-; AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm4
-; AVX1-NEXT:    vpcmpgtq %xmm4, %xmm2, %xmm2
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; AVX1-NEXT:    vpxor %xmm3, %xmm4, %xmm3
-; AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm3
-; AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
+; AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm3
+; AVX1-NEXT:    vpcmpgtq %xmm3, %xmm2, %xmm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper
@@ -693,10 +685,6 @@
 ; AVX1-NEXT:    vxorpd %xmm4, %xmm0, %xmm2
 ; AVX1-NEXT:    vxorpd %xmm4, %xmm1, %xmm3
 ; AVX1-NEXT:    vpcmpgtq %xmm3, %xmm2, %xmm2
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpxor %xmm4, %xmm3, %xmm3
-; AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm3
-; AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper
Index: test/CodeGen/X86/vector-reduce-umin.ll
===================================================================
--- test/CodeGen/X86/vector-reduce-umin.ll
+++ test/CodeGen/X86/vector-reduce-umin.ll
@@ -163,12 +163,8 @@
 ; AVX1-NEXT:    vblendvpd %ymm3, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX1-NEXT:    vxorpd %xmm2, %xmm0, %xmm3
-; AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm4
-; AVX1-NEXT:    vpcmpgtq %xmm3, %xmm4, %xmm3
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; AVX1-NEXT:    vpxor %xmm2, %xmm4, %xmm2
-; AVX1-NEXT:    vpcmpgtq %xmm2, %xmm0, %xmm2
-; AVX1-NEXT:    vinsertf128 $1, %xmm2, %ymm3, %ymm2
+; AVX1-NEXT:    vxorpd %xmm2, %xmm1, %xmm2
+; AVX1-NEXT:    vpcmpgtq %xmm3, %xmm2, %xmm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper
@@ -363,12 +359,8 @@
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX1-NEXT:    vxorpd %xmm3, %xmm0, %xmm2
-; AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm4
-; AVX1-NEXT:    vpcmpgtq %xmm2, %xmm4, %xmm2
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm4
-; AVX1-NEXT:    vpxor %xmm3, %xmm4, %xmm3
-; AVX1-NEXT:    vpcmpgtq %xmm3, %xmm0, %xmm3
-; AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
+; AVX1-NEXT:    vxorpd %xmm3, %xmm1, %xmm3
+; AVX1-NEXT:    vpcmpgtq %xmm2, %xmm3, %xmm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper
@@ -692,10 +684,6 @@
 ; AVX1-NEXT:    vxorpd %xmm4, %xmm0, %xmm2
 ; AVX1-NEXT:    vxorpd %xmm4, %xmm1, %xmm3
 ; AVX1-NEXT:    vpcmpgtq %xmm2, %xmm3, %xmm2
-; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm3
-; AVX1-NEXT:    vpxor %xmm4, %xmm3, %xmm3
-; AVX1-NEXT:    vpcmpgtq %xmm3, %xmm0, %xmm3
-; AVX1-NEXT:    vinsertf128 $1, %xmm3, %ymm2, %ymm2
 ; AVX1-NEXT:    vblendvpd %ymm2, %ymm0, %ymm1, %ymm0
 ; AVX1-NEXT:    vmovq %xmm0, %rax
 ; AVX1-NEXT:    vzeroupper