llvm/test/CodeGen/X86/combine-shl.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.1 | FileCheck %s --check-prefix=SSE
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefix=AVX

; fold (shl 0, x) -> 0
define <4 x i32> @combine_vec_shl_zero(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_zero:
; SSE:       # BB#0:
; SSE-NEXT:    xorps %xmm0, %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_zero:
; AVX:       # BB#0:
; AVX-NEXT:    vpxor %xmm1, %xmm1, %xmm1
; AVX-NEXT:    vpsllvd %xmm0, %xmm1, %xmm0
; AVX-NEXT:    retq
  %1 = shl <4 x i32> zeroinitializer, %x
  ret <4 x i32> %1
}

; fold (shl x, c >= size(x)) -> undef
define <4 x i32> @combine_vec_shl_outofrange0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_outofrange0:
; SSE:       # BB#0:
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_outofrange0:
; AVX:       # BB#0:
; AVX-NEXT:    retq
  %1 = shl <4 x i32> %x, <i32 33, i32 33, i32 33, i32 33>
  ret <4 x i32> %1
}

define <4 x i32> @combine_vec_shl_outofrange1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_outofrange1:
; SSE:       # BB#0:
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_outofrange1:
; AVX:       # BB#0:
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = shl <4 x i32> %x, <i32 33, i32 34, i32 35, i32 36>
  ret <4 x i32> %1
}

; fold (shl x, 0) -> x
define <4 x i32> @combine_vec_shl_by_zero(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_by_zero:
; SSE:       # BB#0:
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_by_zero:
; AVX:       # BB#0:
; AVX-NEXT:    retq
  %1 = shl <4 x i32> %x, zeroinitializer
  ret <4 x i32> %1
}

; if (shl x, c) is known to be zero, return 0
define <4 x i32> @combine_vec_shl_known_zero0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_known_zero0:
; SSE:       # BB#0:
; SSE-NEXT:    pxor %xmm1, %xmm1
; SSE-NEXT:    pblendw {{.*#+}} xmm0 = xmm1[0],xmm0[1],xmm1[2],xmm0[3],xmm1[4],xmm0[5],xmm1[6],xmm0[7]
; SSE-NEXT:    pslld $16, %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_known_zero0:
; AVX:       # BB#0:
; AVX-NEXT:    vpxor %xmm1, %xmm1, %xmm1
; AVX-NEXT:    vpblendw {{.*#+}} xmm0 = xmm1[0],xmm0[1],xmm1[2],xmm0[3],xmm1[4],xmm0[5],xmm1[6],xmm0[7]
; AVX-NEXT:    vpslld $16, %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = and <4 x i32> %x, <i32 4294901760, i32 4294901760, i32 4294901760, i32 4294901760>
  %2 = shl <4 x i32> %1, <i32 16, i32 16, i32 16, i32 16>
  ret <4 x i32> %2
}

define <4 x i32> @combine_vec_shl_known_zero1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_known_zero1:
; SSE:       # BB#0:
; SSE-NEXT:    pand {{.*}}(%rip), %xmm0
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_known_zero1:
; AVX:       # BB#0:
; AVX-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = and <4 x i32> %x, <i32 4294901760, i32 8589803520, i32 17179607040, i32 34359214080>
  %2 = shl <4 x i32> %1, <i32 16, i32 15, i32 14, i32 13>
  ret <4 x i32> %2
}

; fold (shl x, (trunc (and y, c))) -> (shl x, (and (trunc y), (trunc c))).
define <4 x i32> @combine_vec_shl_trunc_and(<4 x i32> %x, <4 x i64> %y) {
; SSE-LABEL: combine_vec_shl_trunc_and:
; SSE:       # BB#0:
; SSE-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[0,1,0,2]
; SSE-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[0,2,2,3]
; SSE-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0,1,2,3],xmm2[4,5,6,7]
; SSE-NEXT:    pand {{.*}}(%rip), %xmm1
; SSE-NEXT:    pslld $23, %xmm1
; SSE-NEXT:    paddd {{.*}}(%rip), %xmm1
; SSE-NEXT:    cvttps2dq %xmm1, %xmm1
; SSE-NEXT:    pmulld %xmm1, %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_trunc_and:
; AVX:       # BB#0:
; AVX-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
; AVX-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
; AVX-NEXT:    vpand {{.*}}(%rip), %xmm1, %xmm1
; AVX-NEXT:    vpsllvd %xmm1, %xmm0, %xmm0
; AVX-NEXT:    vzeroupper
; AVX-NEXT:    retq
  %1 = and <4 x i64> %y, <i64 15, i64 255, i64 4095, i64 65535>
  %2 = trunc <4 x i64> %1 to <4 x i32>
  %3 = shl <4 x i32> %x, %2
  ret <4 x i32> %3
}

; fold (shl (shl x, c1), c2) -> (shl x, (add c1, c2))
define <4 x i32> @combine_vec_shl_shl0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_shl0:
; SSE:       # BB#0:
; SSE-NEXT:    pslld $6, %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_shl0:
; AVX:       # BB#0:
; AVX-NEXT:    vpslld $6, %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = shl <4 x i32> %x, <i32 2, i32 2, i32 2, i32 2>
  %2 = shl <4 x i32> %1, <i32 4, i32 4, i32 4, i32 4>
  ret <4 x i32> %2
}

define <4 x i32> @combine_vec_shl_shl1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_shl1:
; SSE:       # BB#0:
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_shl1:
; AVX:       # BB#0:
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = shl <4 x i32> %x, <i32 0, i32 1, i32 2, i32 3>
  %2 = shl <4 x i32> %1, <i32 4, i32 5, i32 6, i32 7>
  ret <4 x i32> %2
}

; fold (shl (shl x, c1), c2) -> 0
define <4 x i32> @combine_vec_shl_shlr_zero0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_shlr_zero0:
; SSE:       # BB#0:
; SSE-NEXT:    xorps %xmm0, %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_shlr_zero0:
; AVX:       # BB#0:
; AVX-NEXT:    vxorps %xmm0, %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = shl <4 x i32> %x, <i32 16, i32 16, i32 16, i32 16>
  %2 = shl <4 x i32> %1, <i32 20, i32 20, i32 20, i32 20>
  ret <4 x i32> %2
}

define <4 x i32> @combine_vec_shl_shl_zero1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_shl_zero1:
; SSE:       # BB#0:
; SSE-NEXT:    xorps %xmm0, %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_shl_zero1:
; AVX:       # BB#0:
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = shl <4 x i32> %x, <i32 17, i32 18, i32 19, i32 20>
  %2 = shl <4 x i32> %1, <i32 25, i32 26, i32 27, i32 28>
  ret <4 x i32> %2
}

; fold (shl (ext (shl x, c1)), c2) -> (ext (shl x, (add c1, c2)))
define <8 x i32> @combine_vec_shl_ext_shl0(<8 x i16> %x) {
; SSE-LABEL: combine_vec_shl_ext_shl0:
; SSE:       # BB#0:
; SSE-NEXT:    pmovsxwd %xmm0, %xmm2
; SSE-NEXT:    pslld $20, %xmm2
; SSE-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
; SSE-NEXT:    pmovsxwd %xmm0, %xmm1
; SSE-NEXT:    pslld $20, %xmm1
; SSE-NEXT:    movdqa %xmm2, %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_ext_shl0:
; AVX:       # BB#0:
; AVX-NEXT:    vpmovsxwd %xmm0, %ymm0
; AVX-NEXT:    vpslld $20, %ymm0, %ymm0
; AVX-NEXT:    retq
  %1 = shl <8 x i16> %x, <i16 4, i16 4, i16 4, i16 4, i16 4, i16 4, i16 4, i16 4>
  %2 = sext <8 x i16> %1 to <8 x i32>
  %3 = shl <8 x i32> %2, <i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
  ret <8 x i32> %3
}

define <8 x i32> @combine_vec_shl_ext_shl1(<8 x i16> %x) {
; SSE-LABEL: combine_vec_shl_ext_shl1:
; SSE:       # BB#0:
; SSE-NEXT:    pmullw {{.*}}(%rip), %xmm0
; SSE-NEXT:    pshufd {{.*#+}} xmm1 = xmm0[2,3,0,1]
; SSE-NEXT:    pmovsxwd %xmm1, %xmm1
; SSE-NEXT:    pmovsxwd %xmm0, %xmm0
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm0
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm1
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_ext_shl1:
; AVX:       # BB#0:
; AVX-NEXT:    vpmullw {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    vpmovsxwd %xmm0, %ymm0
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %ymm0, %ymm0
; AVX-NEXT:    retq
  %1 = shl <8 x i16> %x, <i16 1, i16 2, i16 3, i16 4, i16 5, i16 6, i16 7, i16 8>
  %2 = sext <8 x i16> %1 to <8 x i32>
  %3 = shl <8 x i32> %2, <i32 31, i32 31, i32 30, i32 30, i32 29, i32 29, i32 28, i32 28>
  ret <8 x i32> %3
}

; fold (shl (zext (srl x, C)), C) -> (zext (shl (srl x, C), C))
define <8 x i32> @combine_vec_shl_zext_lshr0(<8 x i16> %x) {
; SSE-LABEL: combine_vec_shl_zext_lshr0:
; SSE:       # BB#0:
; SSE-NEXT:    movdqa %xmm0, %xmm1
; SSE-NEXT:    pand {{.*}}(%rip), %xmm1
; SSE-NEXT:    pxor %xmm2, %xmm2
; SSE-NEXT:    pmovzxwd {{.*#+}} xmm0 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero
; SSE-NEXT:    punpckhwd {{.*#+}} xmm1 = xmm1[4],xmm2[4],xmm1[5],xmm2[5],xmm1[6],xmm2[6],xmm1[7],xmm2[7]
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_zext_lshr0:
; AVX:       # BB#0:
; AVX-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
; AVX-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
; AVX-NEXT:    retq
  %1 = lshr <8 x i16> %x, <i16 4, i16 4, i16 4, i16 4, i16 4, i16 4, i16 4, i16 4>
  %2 = zext <8 x i16> %1 to <8 x i32>
  %3 = shl <8 x i32> %2, <i32 4, i32 4, i32 4, i32 4, i32 4, i32 4, i32 4, i32 4>
  ret <8 x i32> %3
}

define <8 x i32> @combine_vec_shl_zext_lshr1(<8 x i16> %x) {
; SSE-LABEL: combine_vec_shl_zext_lshr1:
; SSE:       # BB#0:
; SSE-NEXT:    movdqa %xmm0, %xmm1
; SSE-NEXT:    psrlw $8, %xmm1
; SSE-NEXT:    pblendw {{.*#+}} xmm1 = xmm0[0,1,2,3,4,5,6],xmm1[7]
; SSE-NEXT:    movdqa %xmm1, %xmm0
; SSE-NEXT:    psrlw $4, %xmm0
; SSE-NEXT:    pblendw {{.*#+}} xmm0 = xmm1[0,1,2],xmm0[3,4,5,6],xmm1[7]
; SSE-NEXT:    movdqa %xmm0, %xmm2
; SSE-NEXT:    psrlw $2, %xmm2
; SSE-NEXT:    pblendw {{.*#+}} xmm2 = xmm0[0],xmm2[1,2],xmm0[3,4],xmm2[5,6],xmm0[7]
; SSE-NEXT:    movdqa %xmm2, %xmm1
; SSE-NEXT:    psrlw $1, %xmm1
; SSE-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0],xmm2[1],xmm1[2],xmm2[3],xmm1[4],xmm2[5],xmm1[6],xmm2[7]
; SSE-NEXT:    pxor %xmm2, %xmm2
; SSE-NEXT:    pmovzxwd {{.*#+}} xmm0 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero
; SSE-NEXT:    punpckhwd {{.*#+}} xmm1 = xmm1[4],xmm2[4],xmm1[5],xmm2[5],xmm1[6],xmm2[6],xmm1[7],xmm2[7]
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm0
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm1
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_zext_lshr1:
; AVX:       # BB#0:
; AVX-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
; AVX-NEXT:    vmovdqa {{.*#+}} ymm1 = [1,2,3,4,5,6,7,8]
; AVX-NEXT:    vpsrlvd %ymm1, %ymm0, %ymm0
; AVX-NEXT:    vpshufb {{.*#+}} ymm0 = ymm0[0,1,4,5,8,9,12,13],zero,zero,zero,zero,zero,zero,zero,zero,ymm0[16,17,20,21,24,25,28,29],zero,zero,zero,zero,zero,zero,zero,zero
; AVX-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
; AVX-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
; AVX-NEXT:    vpsllvd %ymm1, %ymm0, %ymm0
; AVX-NEXT:    retq
  %1 = lshr <8 x i16> %x, <i16 1, i16 2, i16 3, i16 4, i16 5, i16 6, i16 7, i16 8>
  %2 = zext <8 x i16> %1 to <8 x i32>
  %3 = shl <8 x i32> %2, <i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8>
  ret <8 x i32> %3
}

; fold (shl (sr[la] exact X,  C1), C2) -> (shl X, (C2-C1)) if C1 <= C2
define <4 x i32> @combine_vec_shl_ge_ashr_extact0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_ge_ashr_extact0:
; SSE:       # BB#0:
; SSE-NEXT:    pslld $2, %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_ge_ashr_extact0:
; AVX:       # BB#0:
; AVX-NEXT:    vpslld $2, %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = ashr exact <4 x i32> %x, <i32 3, i32 3, i32 3, i32 3>
  %2 = shl <4 x i32> %1, <i32 5, i32 5, i32 5, i32 5>
  ret <4 x i32> %2
}

define <4 x i32> @combine_vec_shl_ge_ashr_extact1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_ge_ashr_extact1:
; SSE:       # BB#0:
; SSE-NEXT:    movdqa %xmm0, %xmm1
; SSE-NEXT:    psrad $8, %xmm1
; SSE-NEXT:    movdqa %xmm0, %xmm2
; SSE-NEXT:    psrad $4, %xmm2
; SSE-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0,1,2,3],xmm1[4,5,6,7]
; SSE-NEXT:    movdqa %xmm0, %xmm1
; SSE-NEXT:    psrad $5, %xmm1
; SSE-NEXT:    psrad $3, %xmm0
; SSE-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm1[4,5,6,7]
; SSE-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm2[2,3],xmm0[4,5],xmm2[6,7]
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_ge_ashr_extact1:
; AVX:       # BB#0:
; AVX-NEXT:    vpsravd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = ashr exact <4 x i32> %x, <i32 3, i32 4, i32 5, i32 8>
  %2 = shl <4 x i32> %1, <i32 5, i32 6, i32 7, i32 8>
  ret <4 x i32> %2
}

; fold (shl (sr[la] exact X,  C1), C2) -> (sr[la] X, (C2-C1)) if C1  > C2
define <4 x i32> @combine_vec_shl_lt_ashr_extact0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_lt_ashr_extact0:
; SSE:       # BB#0:
; SSE-NEXT:    psrad $2, %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_lt_ashr_extact0:
; AVX:       # BB#0:
; AVX-NEXT:    vpsrad $2, %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = ashr exact <4 x i32> %x, <i32 5, i32 5, i32 5, i32 5>
  %2 = shl <4 x i32> %1, <i32 3, i32 3, i32 3, i32 3>
  ret <4 x i32> %2
}

define <4 x i32> @combine_vec_shl_lt_ashr_extact1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_lt_ashr_extact1:
; SSE:       # BB#0:
; SSE-NEXT:    movdqa %xmm0, %xmm1
; SSE-NEXT:    psrad $8, %xmm1
; SSE-NEXT:    movdqa %xmm0, %xmm2
; SSE-NEXT:    psrad $6, %xmm2
; SSE-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0,1,2,3],xmm1[4,5,6,7]
; SSE-NEXT:    movdqa %xmm0, %xmm1
; SSE-NEXT:    psrad $7, %xmm1
; SSE-NEXT:    psrad $5, %xmm0
; SSE-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm1[4,5,6,7]
; SSE-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm2[2,3],xmm0[4,5],xmm2[6,7]
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_lt_ashr_extact1:
; AVX:       # BB#0:
; AVX-NEXT:    vpsravd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = ashr exact <4 x i32> %x, <i32 5, i32 6, i32 7, i32 8>
  %2 = shl <4 x i32> %1, <i32 3, i32 4, i32 5, i32 8>
  ret <4 x i32> %2
}

; fold (shl (srl x, c1), c2) -> (and (shl x, (sub c2, c1), MASK) if C2 > C1
define <4 x i32> @combine_vec_shl_gt_lshr0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_gt_lshr0:
; SSE:       # BB#0:
; SSE-NEXT:    pslld $2, %xmm0
; SSE-NEXT:    pand {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_gt_lshr0:
; AVX:       # BB#0:
; AVX-NEXT:    vpbroadcastd {{.*}}(%rip), %xmm1
; AVX-NEXT:    vpslld $2, %xmm0, %xmm0
; AVX-NEXT:    vpand %xmm1, %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = lshr <4 x i32> %x, <i32 3, i32 3, i32 3, i32 3>
  %2 = shl <4 x i32> %1, <i32 5, i32 5, i32 5, i32 5>
  ret <4 x i32> %2
}

define <4 x i32> @combine_vec_shl_gt_lshr1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_gt_lshr1:
; SSE:       # BB#0:
; SSE-NEXT:    movdqa %xmm0, %xmm1
; SSE-NEXT:    psrld $8, %xmm1
; SSE-NEXT:    movdqa %xmm0, %xmm2
; SSE-NEXT:    psrld $4, %xmm2
; SSE-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0,1,2,3],xmm1[4,5,6,7]
; SSE-NEXT:    movdqa %xmm0, %xmm1
; SSE-NEXT:    psrld $5, %xmm1
; SSE-NEXT:    psrld $3, %xmm0
; SSE-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm1[4,5,6,7]
; SSE-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm2[2,3],xmm0[4,5],xmm2[6,7]
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_gt_lshr1:
; AVX:       # BB#0:
; AVX-NEXT:    vpsrlvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = lshr <4 x i32> %x, <i32 3, i32 4, i32 5, i32 8>
  %2 = shl <4 x i32> %1, <i32 5, i32 6, i32 7, i32 8>
  ret <4 x i32> %2
}

; fold (shl (srl x, c1), c2) -> (and (srl x, (sub c1, c2), MASK) if C1 >= C2
define <4 x i32> @combine_vec_shl_le_lshr0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_le_lshr0:
; SSE:       # BB#0:
; SSE-NEXT:    psrld $2, %xmm0
; SSE-NEXT:    pand {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_le_lshr0:
; AVX:       # BB#0:
; AVX-NEXT:    vpbroadcastd {{.*}}(%rip), %xmm1
; AVX-NEXT:    vpsrld $2, %xmm0, %xmm0
; AVX-NEXT:    vpand %xmm1, %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = lshr <4 x i32> %x, <i32 5, i32 5, i32 5, i32 5>
  %2 = shl <4 x i32> %1, <i32 3, i32 3, i32 3, i32 3>
  ret <4 x i32> %2
}

define <4 x i32> @combine_vec_shl_le_lshr1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_le_lshr1:
; SSE:       # BB#0:
; SSE-NEXT:    movdqa %xmm0, %xmm1
; SSE-NEXT:    psrld $8, %xmm1
; SSE-NEXT:    movdqa %xmm0, %xmm2
; SSE-NEXT:    psrld $6, %xmm2
; SSE-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0,1,2,3],xmm1[4,5,6,7]
; SSE-NEXT:    movdqa %xmm0, %xmm1
; SSE-NEXT:    psrld $7, %xmm1
; SSE-NEXT:    psrld $5, %xmm0
; SSE-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm1[4,5,6,7]
; SSE-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm2[2,3],xmm0[4,5],xmm2[6,7]
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_le_lshr1:
; AVX:       # BB#0:
; AVX-NEXT:    vpsrlvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = lshr <4 x i32> %x, <i32 5, i32 6, i32 7, i32 8>
  %2 = shl <4 x i32> %1, <i32 3, i32 4, i32 5, i32 8>
  ret <4 x i32> %2
}

; fold (shl (sra x, c1), c1) -> (and x, (shl -1, c1))
define <4 x i32> @combine_vec_shl_ashr0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_ashr0:
; SSE:       # BB#0:
; SSE-NEXT:    andps {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_ashr0:
; AVX:       # BB#0:
; AVX-NEXT:    vbroadcastss {{.*}}(%rip), %xmm1
; AVX-NEXT:    vandps %xmm1, %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = ashr <4 x i32> %x, <i32 5, i32 5, i32 5, i32 5>
  %2 = shl <4 x i32> %1, <i32 5, i32 5, i32 5, i32 5>
  ret <4 x i32> %2
}

define <4 x i32> @combine_vec_shl_ashr1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_ashr1:
; SSE:       # BB#0:
; SSE-NEXT:    andps {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_ashr1:
; AVX:       # BB#0:
; AVX-NEXT:    vandps {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = ashr <4 x i32> %x, <i32 5, i32 6, i32 7, i32 8>
  %2 = shl <4 x i32> %1, <i32 5, i32 6, i32 7, i32 8>
  ret <4 x i32> %2
}

; fold (shl (add x, c1), c2) -> (add (shl x, c2), c1 << c2)
define <4 x i32> @combine_vec_shl_add0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_add0:
; SSE:       # BB#0:
; SSE-NEXT:    pslld $2, %xmm0
; SSE-NEXT:    paddd {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_add0:
; AVX:       # BB#0:
; AVX-NEXT:    vpslld $2, %xmm0, %xmm0
; AVX-NEXT:    vpbroadcastd {{.*}}(%rip), %xmm1
; AVX-NEXT:    vpaddd %xmm1, %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = add <4 x i32> %x, <i32 5, i32 5, i32 5, i32 5>
  %2 = shl <4 x i32> %1, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %2
}

define <4 x i32> @combine_vec_shl_add1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_add1:
; SSE:       # BB#0:
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm0
; SSE-NEXT:    paddd {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_add1:
; AVX:       # BB#0:
; AVX-NEXT:    vpsllvd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    vpaddd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = add <4 x i32> %x, <i32 5, i32 6, i32 7, i32 8>
  %2 = shl <4 x i32> %1, <i32 1, i32 2, i32 3, i32 4>
  ret <4 x i32> %2
}

; fold (shl (mul x, c1), c2) -> (mul x, c1 << c2)
define <4 x i32> @combine_vec_shl_mul0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_mul0:
; SSE:       # BB#0:
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_mul0:
; AVX:       # BB#0:
; AVX-NEXT:    vpbroadcastd {{.*}}(%rip), %xmm1
; AVX-NEXT:    vpmulld %xmm1, %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = mul <4 x i32> %x, <i32 5, i32 5, i32 5, i32 5>
  %2 = shl <4 x i32> %1, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %2
}

define <4 x i32> @combine_vec_shl_mul1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_shl_mul1:
; SSE:       # BB#0:
; SSE-NEXT:    pmulld {{.*}}(%rip), %xmm0
; SSE-NEXT:    retq
;
; AVX-LABEL: combine_vec_shl_mul1:
; AVX:       # BB#0:
; AVX-NEXT:    vpmulld {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT:    retq
  %1 = mul <4 x i32> %x, <i32 5, i32 6, i32 7, i32 8>
  %2 = shl <4 x i32> %1, <i32 1, i32 2, i32 3, i32 4>
  ret <4 x i32> %2
}