; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7 | FileCheck %s

; Test that we correctly fold a shuffle that performs a swizzle of another
; shuffle node according to the rule
;  shuffle (shuffle (x, undef, M0), undef, M1) -> shuffle(x, undef, M2)
;
; We only do this if the resulting mask is legal to avoid introducing an
; illegal shuffle that is expanded into a sub-optimal sequence of instructions
; during lowering stage.

define <4 x i32> @swizzle_1(<4 x i32> %v) {
; CHECK-LABEL: swizzle_1:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,0,3,2]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 3, i32 2, i32 0, i32 1>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 3, i32 2, i32 0, i32 1>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_2(<4 x i32> %v) {
; CHECK-LABEL: swizzle_2:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[2,1,3,0]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 3, i32 1, i32 0, i32 2>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 3, i32 1, i32 0, i32 2>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_3(<4 x i32> %v) {
; CHECK-LABEL: swizzle_3:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,0,3,2]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 1, i32 0>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 1, i32 0>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_4(<4 x i32> %v) {
; CHECK-LABEL: swizzle_4:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[3,1,0,2]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 2, i32 1, i32 3, i32 0>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 2, i32 1, i32 3, i32 0>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_5(<4 x i32> %v) {
; CHECK-LABEL: swizzle_5:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 1, i32 2, i32 3, i32 0>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 1, i32 2, i32 3, i32 0>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_6(<4 x i32> %v) {
; CHECK-LABEL: swizzle_6:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[2,0,1,3]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 1, i32 2, i32 0, i32 3>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 1, i32 2, i32 0, i32 3>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_7(<4 x i32> %v) {
; CHECK-LABEL: swizzle_7:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[0,2,3,1]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 0, i32 3, i32 1, i32 2>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 0, i32 3, i32 1, i32 2>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_8(<4 x i32> %v) {
; CHECK-LABEL: swizzle_8:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,3,2,0]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 3, i32 0, i32 2, i32 1>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 3, i32 0, i32 2, i32 1>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_9(<4 x i32> %v) {
; CHECK-LABEL: swizzle_9:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 3, i32 0, i32 1, i32 2>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 3, i32 0, i32 1, i32 2>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_10(<4 x i32> %v) {
; CHECK-LABEL: swizzle_10:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,2,0,3]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 2, i32 0, i32 1, i32 3>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 2, i32 0, i32 1, i32 3>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_11(<4 x i32> %v) {
; CHECK-LABEL: swizzle_11:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[3,2,1,0]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 2, i32 0, i32 3, i32 1>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 2, i32 0, i32 3, i32 1>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_12(<4 x i32> %v) {
; CHECK-LABEL: swizzle_12:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[0,3,1,2]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 0, i32 2, i32 3, i32 1>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 0, i32 2, i32 3, i32 1>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_13(<4 x i32> %v) {
; CHECK-LABEL: swizzle_13:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[3,2,1,0]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 1, i32 3, i32 0, i32 2>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 1, i32 3, i32 0, i32 2>
  ret <4 x i32> %2
}

define <4 x i32> @swizzle_14(<4 x i32> %v) {
; CHECK-LABEL: swizzle_14:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[3,0,2,1]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x i32> %v, <4 x i32> undef, <4 x i32> <i32 1, i32 3, i32 2, i32 0>
  %2 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 1, i32 3, i32 2, i32 0>
  ret <4 x i32> %2
}

define <4 x float> @swizzle_15(<4 x float> %v) {
; CHECK-LABEL: swizzle_15:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[1,0,3,2]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 3, i32 2, i32 0, i32 1>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 3, i32 2, i32 0, i32 1>
  ret <4 x float> %2
}

define <4 x float> @swizzle_16(<4 x float> %v) {
; CHECK-LABEL: swizzle_16:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[2,1,3,0]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 3, i32 1, i32 0, i32 2>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 3, i32 1, i32 0, i32 2>
  ret <4 x float> %2
}

define <4 x float> @swizzle_17(<4 x float> %v) {
; CHECK-LABEL: swizzle_17:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[1,0,3,2]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 2, i32 3, i32 1, i32 0>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 2, i32 3, i32 1, i32 0>
  ret <4 x float> %2
}

define <4 x float> @swizzle_18(<4 x float> %v) {
; CHECK-LABEL: swizzle_18:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[3,1,0,2]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 2, i32 1, i32 3, i32 0>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 2, i32 1, i32 3, i32 0>
  ret <4 x float> %2
}

define <4 x float> @swizzle_19(<4 x float> %v) {
; CHECK-LABEL: swizzle_19:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufpd {{.*#+}} xmm0 = xmm0[1,0]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 1, i32 2, i32 3, i32 0>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 1, i32 2, i32 3, i32 0>
  ret <4 x float> %2
}

define <4 x float> @swizzle_20(<4 x float> %v) {
; CHECK-LABEL: swizzle_20:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[2,0,1,3]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 1, i32 2, i32 0, i32 3>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 1, i32 2, i32 0, i32 3>
  ret <4 x float> %2
}

define <4 x float> @swizzle_21(<4 x float> %v) {
; CHECK-LABEL: swizzle_21:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[0,2,3,1]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 0, i32 3, i32 1, i32 2>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 0, i32 3, i32 1, i32 2>
  ret <4 x float> %2
}

define <4 x float> @swizzle_22(<4 x float> %v) {
; CHECK-LABEL: swizzle_22:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[1,3,2,0]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 3, i32 0, i32 2, i32 1>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 3, i32 0, i32 2, i32 1>
  ret <4 x float> %2
}

define <4 x float> @swizzle_23(<4 x float> %v) {
; CHECK-LABEL: swizzle_23:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufpd {{.*#+}} xmm0 = xmm0[1,0]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 3, i32 0, i32 1, i32 2>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 3, i32 0, i32 1, i32 2>
  ret <4 x float> %2
}

define <4 x float> @swizzle_24(<4 x float> %v) {
; CHECK-LABEL: swizzle_24:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[1,2,0,3]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 2, i32 0, i32 1, i32 3>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 2, i32 0, i32 1, i32 3>
  ret <4 x float> %2
}

define <4 x float> @swizzle_25(<4 x float> %v) {
; CHECK-LABEL: swizzle_25:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[3,2,1,0]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 2, i32 0, i32 3, i32 1>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 2, i32 0, i32 3, i32 1>
  ret <4 x float> %2
}

define <4 x float> @swizzle_26(<4 x float> %v) {
; CHECK-LABEL: swizzle_26:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[0,3,1,2]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 0, i32 2, i32 3, i32 1>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 0, i32 2, i32 3, i32 1>
  ret <4 x float> %2
}

define <4 x float> @swizzle_27(<4 x float> %v) {
; CHECK-LABEL: swizzle_27:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[3,2,1,0]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 1, i32 3, i32 0, i32 2>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 1, i32 3, i32 0, i32 2>
  ret <4 x float> %2
}

define <4 x float> @swizzle_28(<4 x float> %v) {
; CHECK-LABEL: swizzle_28:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[3,0,2,1]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 1, i32 3, i32 2, i32 0>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 1, i32 3, i32 2, i32 0>
  ret <4 x float> %2
}

define <4 x float> @swizzle_29(<4 x float> %v) {
; CHECK-LABEL: swizzle_29:
; CHECK:       # BB#0:
; CHECK-NEXT:    shufps {{.*#+}} xmm0 = xmm0[1,3,2,0]
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %v, <4 x float> undef, <4 x i32> <i32 3, i32 1, i32 2, i32 0>
  %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 1, i32 0, i32 2, i32 3>
  ret <4 x float> %2
}

; Make sure that we combine the shuffles from each function below into a single
; legal shuffle (either pshuflw or pshufb depending on the masks).

define <8 x i16> @swizzle_30(<8 x i16> %v) {
; CHECK-LABEL: swizzle_30:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[1,3,2,0,4,5,6,7]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 3, i32 1, i32 2, i32 0, i32 7, i32 5, i32 6, i32 4>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 1, i32 0, i32 2, i32 3, i32 7, i32 5, i32 6, i32 4>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_31(<8 x i16> %v) {
; CHECK-LABEL: swizzle_31:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[1,3,2,0,4,5,6,7]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 3, i32 0, i32 2, i32 1, i32 7, i32 5, i32 6, i32 4>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 3, i32 0, i32 2, i32 1, i32 7, i32 5, i32 6, i32 4>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_32(<8 x i16> %v) {
; CHECK-LABEL: swizzle_32:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,0,2,3]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 1, i32 2, i32 3, i32 0, i32 7, i32 5, i32 6, i32 4>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 1, i32 2, i32 3, i32 0, i32 7, i32 5, i32 6, i32 4>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_33(<8 x i16> %v) {
; CHECK-LABEL: swizzle_33:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[2,1,3,0,4,5,6,7]
; CHECK-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,7,6,4]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 4, i32 6, i32 5, i32 7, i32 2, i32 3, i32 1, i32 0>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 4, i32 6, i32 5, i32 7, i32 2, i32 3, i32 1, i32 0>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_34(<8 x i16> %v) {
; CHECK-LABEL: swizzle_34:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[1,3,0,2,4,5,6,7]
; CHECK-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,7,6,4,5]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 4, i32 7, i32 6, i32 5, i32 1, i32 2, i32 0, i32 3>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 4, i32 7, i32 6, i32 5, i32 1, i32 2, i32 0, i32 3>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_35(<8 x i16> %v) {
; CHECK-LABEL: swizzle_35:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[2,1,0,3,4,5,6,7]
; CHECK-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,5,7,6]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 7, i32 4, i32 6, i32 5, i32 1, i32 3, i32 0, i32 2>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 7, i32 4, i32 6, i32 5, i32 1, i32 3, i32 0, i32 2>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_36(<8 x i16> %v) {
; CHECK-LABEL: swizzle_36:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,3,2,1,4,5,6,7]
; CHECK-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,6,5,7]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 4, i32 6, i32 7, i32 5, i32 0, i32 1, i32 3, i32 2>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 4, i32 6, i32 7, i32 5, i32 0, i32 1, i32 3, i32 2>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_37(<8 x i16> %v) {
; CHECK-LABEL: swizzle_37:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,7,6,5]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 1, i32 0, i32 3, i32 2, i32 7, i32 5, i32 6, i32 4>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 1, i32 0, i32 3, i32 2, i32 7, i32 4, i32 6, i32 5>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_38(<8 x i16> %v) {
; CHECK-LABEL: swizzle_38:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[2,1,0,3,4,5,6,7]
; CHECK-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,4,6,7]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 5, i32 6, i32 4, i32 7, i32 0, i32 2, i32 1, i32 3>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 5, i32 6, i32 4, i32 7, i32 0, i32 2, i32 1, i32 3>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_39(<8 x i16> %v) {
; CHECK-LABEL: swizzle_39:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[2,3,1,0,4,5,6,7]
; CHECK-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,7,6,4,5]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 5, i32 4, i32 6, i32 7, i32 3, i32 2, i32 1, i32 0>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 5, i32 4, i32 6, i32 7, i32 3, i32 2, i32 1, i32 0>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_40(<8 x i16> %v) {
; CHECK-LABEL: swizzle_40:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[3,1,2,0,4,5,6,7]
; CHECK-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,6,5,7]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 6, i32 4, i32 7, i32 5, i32 1, i32 0, i32 3, i32 2>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 6, i32 4, i32 7, i32 5, i32 1, i32 0, i32 3, i32 2>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_41(<8 x i16> %v) {
; CHECK-LABEL: swizzle_41:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[3,2,1,0,4,5,6,7]
; CHECK-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[0,1,3,2]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 6, i32 7, i32 5, i32 4, i32 0, i32 1, i32 3, i32 2>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 6, i32 7, i32 5, i32 4, i32 0, i32 1, i32 3, i32 2>
  ret <8 x i16> %2
}

define <8 x i16> @swizzle_42(<8 x i16> %v) {
; CHECK-LABEL: swizzle_42:
; CHECK:       # BB#0:
; CHECK-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,4,7,6]
; CHECK-NEXT:    retq
  %1 = shufflevector <8 x i16> %v, <8 x i16> undef, <8 x i32> <i32 0, i32 1, i32 3, i32 2, i32 7, i32 6, i32 4, i32 5>
  %2 = shufflevector <8 x i16> %1, <8 x i16> undef, <8 x i32> <i32 0, i32 1, i32 3, i32 2, i32 7, i32 6, i32 4, i32 5>
  ret <8 x i16> %2
}