diff --git a/test/CodeGen/X86/vector-sext-widen.ll b/test/CodeGen/X86/vector-sext-widen.ll
index f8c55bb..b8a2293 100644
--- a/test/CodeGen/X86/vector-sext-widen.ll
+++ b/test/CodeGen/X86/vector-sext-widen.ll
@@ -6057,3 +6057,269 @@
   %b = sext <4 x i17> %a to <4 x i32>
   ret <4 x i32> %b
 }
+
+define <8 x i64> @sext_8i6_to_8i64(i32 %x) nounwind uwtable readnone ssp {
+; SSE2-LABEL: sext_8i6_to_8i64:
+; SSE2:       # %bb.0: # %entry
+; SSE2-NEXT:    movd %edi, %xmm0
+; SSE2-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSE2-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm3[0,1,0,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    psllq $58, %xmm0
+; SSE2-NEXT:    movdqa %xmm0, %xmm1
+; SSE2-NEXT:    psrad $31, %xmm1
+; SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; SSE2-NEXT:    psrad $26, %xmm0
+; SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,3,2,3]
+; SSE2-NEXT:    punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,1,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm1 = xmm1[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    psllq $58, %xmm1
+; SSE2-NEXT:    movdqa %xmm1, %xmm2
+; SSE2-NEXT:    psrad $31, %xmm2
+; SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; SSE2-NEXT:    psrad $26, %xmm1
+; SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; SSE2-NEXT:    punpckldq {{.*#+}} xmm1 = xmm1[0],xmm2[0],xmm1[1],xmm2[1]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,1,2,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm2 = xmm2[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    psllq $58, %xmm2
+; SSE2-NEXT:    movdqa %xmm2, %xmm4
+; SSE2-NEXT:    psrad $31, %xmm4
+; SSE2-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; SSE2-NEXT:    psrad $26, %xmm2
+; SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; SSE2-NEXT:    punpckldq {{.*#+}} xmm2 = xmm2[0],xmm4[0],xmm2[1],xmm4[1]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,3,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm3 = xmm3[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    psllq $58, %xmm3
+; SSE2-NEXT:    movdqa %xmm3, %xmm4
+; SSE2-NEXT:    psrad $31, %xmm4
+; SSE2-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; SSE2-NEXT:    psrad $26, %xmm3
+; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[1,3,2,3]
+; SSE2-NEXT:    punpckldq {{.*#+}} xmm3 = xmm3[0],xmm4[0],xmm3[1],xmm4[1]
+; SSE2-NEXT:    retq
+;
+; SSSE3-LABEL: sext_8i6_to_8i64:
+; SSSE3:       # %bb.0: # %entry
+; SSSE3-NEXT:    movd %edi, %xmm0
+; SSSE3-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSSE3-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm3[0,1,0,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    psllq $58, %xmm0
+; SSSE3-NEXT:    movdqa %xmm0, %xmm1
+; SSSE3-NEXT:    psrad $31, %xmm1
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; SSSE3-NEXT:    psrad $26, %xmm0
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,3,2,3]
+; SSSE3-NEXT:    punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,1,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm1 = xmm1[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    psllq $58, %xmm1
+; SSSE3-NEXT:    movdqa %xmm1, %xmm2
+; SSSE3-NEXT:    psrad $31, %xmm2
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; SSSE3-NEXT:    psrad $26, %xmm1
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; SSSE3-NEXT:    punpckldq {{.*#+}} xmm1 = xmm1[0],xmm2[0],xmm1[1],xmm2[1]
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,1,2,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm2 = xmm2[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    psllq $58, %xmm2
+; SSSE3-NEXT:    movdqa %xmm2, %xmm4
+; SSSE3-NEXT:    psrad $31, %xmm4
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; SSSE3-NEXT:    psrad $26, %xmm2
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; SSSE3-NEXT:    punpckldq {{.*#+}} xmm2 = xmm2[0],xmm4[0],xmm2[1],xmm4[1]
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,3,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm3 = xmm3[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    psllq $58, %xmm3
+; SSSE3-NEXT:    movdqa %xmm3, %xmm4
+; SSSE3-NEXT:    psrad $31, %xmm4
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; SSSE3-NEXT:    psrad $26, %xmm3
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[1,3,2,3]
+; SSSE3-NEXT:    punpckldq {{.*#+}} xmm3 = xmm3[0],xmm4[0],xmm3[1],xmm4[1]
+; SSSE3-NEXT:    retq
+;
+; SSE41-LABEL: sext_8i6_to_8i64:
+; SSE41:       # %bb.0: # %entry
+; SSE41-NEXT:    movd %edi, %xmm0
+; SSE41-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSE41-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm0 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; SSE41-NEXT:    psllq $58, %xmm0
+; SSE41-NEXT:    movdqa %xmm0, %xmm1
+; SSE41-NEXT:    psrad $31, %xmm1
+; SSE41-NEXT:    psrad $26, %xmm0
+; SSE41-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
+; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm1[2,3],xmm0[4,5],xmm1[6,7]
+; SSE41-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,2,3]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm1 = xmm1[0],zero,zero,zero,xmm1[1],zero,zero,zero
+; SSE41-NEXT:    psllq $58, %xmm1
+; SSE41-NEXT:    movdqa %xmm1, %xmm2
+; SSE41-NEXT:    psrad $31, %xmm2
+; SSE41-NEXT:    psrad $26, %xmm1
+; SSE41-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
+; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0,1],xmm2[2,3],xmm1[4,5],xmm2[6,7]
+; SSE41-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,3,0,1]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm2 = xmm2[0],zero,zero,zero,xmm2[1],zero,zero,zero
+; SSE41-NEXT:    psllq $58, %xmm2
+; SSE41-NEXT:    movdqa %xmm2, %xmm4
+; SSE41-NEXT:    psrad $31, %xmm4
+; SSE41-NEXT:    psrad $26, %xmm2
+; SSE41-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,1,3,3]
+; SSE41-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0,1],xmm4[2,3],xmm2[4,5],xmm4[6,7]
+; SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,2,3]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm3 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; SSE41-NEXT:    psllq $58, %xmm3
+; SSE41-NEXT:    movdqa %xmm3, %xmm4
+; SSE41-NEXT:    psrad $31, %xmm4
+; SSE41-NEXT:    psrad $26, %xmm3
+; SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[1,1,3,3]
+; SSE41-NEXT:    pblendw {{.*#+}} xmm3 = xmm3[0,1],xmm4[2,3],xmm3[4,5],xmm4[6,7]
+; SSE41-NEXT:    retq
+;
+; AVX1-LABEL: sext_8i6_to_8i64:
+; AVX1:       # %bb.0: # %entry
+; AVX1-NEXT:    vmovd %edi, %xmm0
+; AVX1-NEXT:    vpshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,0,0,0]
+; AVX1-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm0
+; AVX1-NEXT:    vpunpckhwd {{.*#+}} xmm1 = xmm0[4,4,5,5,6,6,7,7]
+; AVX1-NEXT:    vpslld $26, %xmm1, %xmm1
+; AVX1-NEXT:    vpsrad $26, %xmm1, %xmm1
+; AVX1-NEXT:    vpmovsxdq %xmm1, %xmm2
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm1 = xmm1[2,3,0,1]
+; AVX1-NEXT:    vpmovsxdq %xmm1, %xmm1
+; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm2, %ymm1
+; AVX1-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
+; AVX1-NEXT:    vpslld $26, %xmm0, %xmm0
+; AVX1-NEXT:    vpsrad $26, %xmm0, %xmm0
+; AVX1-NEXT:    vpmovsxdq %xmm0, %xmm2
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
+; AVX1-NEXT:    vpmovsxdq %xmm0, %xmm0
+; AVX1-NEXT:    vinsertf128 $1, %xmm0, %ymm2, %ymm0
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: sext_8i6_to_8i64:
+; AVX2:       # %bb.0: # %entry
+; AVX2-NEXT:    vmovd %edi, %xmm0
+; AVX2-NEXT:    vpbroadcastw %xmm0, %xmm0
+; AVX2-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm1
+; AVX2-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero
+; AVX2-NEXT:    vpslld $26, %xmm0, %xmm0
+; AVX2-NEXT:    vpsrad $26, %xmm0, %xmm0
+; AVX2-NEXT:    vpmovsxdq %xmm0, %ymm0
+; AVX2-NEXT:    vpunpckhwd {{.*#+}} xmm1 = xmm1[4],xmm0[4],xmm1[5],xmm0[5],xmm1[6],xmm0[6],xmm1[7],xmm0[7]
+; AVX2-NEXT:    vpslld $26, %xmm1, %xmm1
+; AVX2-NEXT:    vpsrad $26, %xmm1, %xmm1
+; AVX2-NEXT:    vpmovsxdq %xmm1, %ymm1
+; AVX2-NEXT:    retq
+;
+; AVX512-LABEL: sext_8i6_to_8i64:
+; AVX512:       # %bb.0: # %entry
+; AVX512-NEXT:    vmovd %edi, %xmm0
+; AVX512-NEXT:    vpbroadcastw %xmm0, %xmm0
+; AVX512-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm0
+; AVX512-NEXT:    vpmovzxwq {{.*#+}} zmm0 = 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
+; AVX512-NEXT:    vpsllq $58, %zmm0, %zmm0
+; AVX512-NEXT:    vpsraq $58, %zmm0, %zmm0
+; AVX512-NEXT:    retq
+;
+; X32-SSE2-LABEL: sext_8i6_to_8i64:
+; X32-SSE2:       # %bb.0: # %entry
+; X32-SSE2-NEXT:    movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; X32-SSE2-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; X32-SSE2-NEXT:    paddw {{\.LCPI.*}}, %xmm3
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm3[0,1,0,3]
+; X32-SSE2-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,5,6,7]
+; X32-SSE2-NEXT:    psllq $58, %xmm0
+; X32-SSE2-NEXT:    movdqa %xmm0, %xmm1
+; X32-SSE2-NEXT:    psrad $31, %xmm1
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; X32-SSE2-NEXT:    psrad $26, %xmm0
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,3,2,3]
+; X32-SSE2-NEXT:    punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,1,3]
+; X32-SSE2-NEXT:    pshufhw {{.*#+}} xmm1 = xmm1[0,1,2,3,5,5,6,7]
+; X32-SSE2-NEXT:    psllq $58, %xmm1
+; X32-SSE2-NEXT:    movdqa %xmm1, %xmm2
+; X32-SSE2-NEXT:    psrad $31, %xmm2
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; X32-SSE2-NEXT:    psrad $26, %xmm1
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; X32-SSE2-NEXT:    punpckldq {{.*#+}} xmm1 = xmm1[0],xmm2[0],xmm1[1],xmm2[1]
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,1,2,3]
+; X32-SSE2-NEXT:    pshufhw {{.*#+}} xmm2 = xmm2[0,1,2,3,5,5,6,7]
+; X32-SSE2-NEXT:    psllq $58, %xmm2
+; X32-SSE2-NEXT:    movdqa %xmm2, %xmm4
+; X32-SSE2-NEXT:    psrad $31, %xmm4
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; X32-SSE2-NEXT:    psrad $26, %xmm2
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; X32-SSE2-NEXT:    punpckldq {{.*#+}} xmm2 = xmm2[0],xmm4[0],xmm2[1],xmm4[1]
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,3,3]
+; X32-SSE2-NEXT:    pshufhw {{.*#+}} xmm3 = xmm3[0,1,2,3,5,5,6,7]
+; X32-SSE2-NEXT:    psllq $58, %xmm3
+; X32-SSE2-NEXT:    movdqa %xmm3, %xmm4
+; X32-SSE2-NEXT:    psrad $31, %xmm4
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; X32-SSE2-NEXT:    psrad $26, %xmm3
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[1,3,2,3]
+; X32-SSE2-NEXT:    punpckldq {{.*#+}} xmm3 = xmm3[0],xmm4[0],xmm3[1],xmm4[1]
+; X32-SSE2-NEXT:    retl
+;
+; X32-SSE41-LABEL: sext_8i6_to_8i64:
+; X32-SSE41:       # %bb.0: # %entry
+; X32-SSE41-NEXT:    movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; X32-SSE41-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; X32-SSE41-NEXT:    paddw {{\.LCPI.*}}, %xmm3
+; X32-SSE41-NEXT:    pmovzxwq {{.*#+}} xmm0 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; X32-SSE41-NEXT:    psllq $58, %xmm0
+; X32-SSE41-NEXT:    movdqa %xmm0, %xmm1
+; X32-SSE41-NEXT:    psrad $31, %xmm1
+; X32-SSE41-NEXT:    psrad $26, %xmm0
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
+; X32-SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm1[2,3],xmm0[4,5],xmm1[6,7]
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,2,3]
+; X32-SSE41-NEXT:    pmovzxwq {{.*#+}} xmm1 = xmm1[0],zero,zero,zero,xmm1[1],zero,zero,zero
+; X32-SSE41-NEXT:    psllq $58, %xmm1
+; X32-SSE41-NEXT:    movdqa %xmm1, %xmm2
+; X32-SSE41-NEXT:    psrad $31, %xmm2
+; X32-SSE41-NEXT:    psrad $26, %xmm1
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
+; X32-SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0,1],xmm2[2,3],xmm1[4,5],xmm2[6,7]
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,3,0,1]
+; X32-SSE41-NEXT:    pmovzxwq {{.*#+}} xmm2 = xmm2[0],zero,zero,zero,xmm2[1],zero,zero,zero
+; X32-SSE41-NEXT:    psllq $58, %xmm2
+; X32-SSE41-NEXT:    movdqa %xmm2, %xmm4
+; X32-SSE41-NEXT:    psrad $31, %xmm4
+; X32-SSE41-NEXT:    psrad $26, %xmm2
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,1,3,3]
+; X32-SSE41-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0,1],xmm4[2,3],xmm2[4,5],xmm4[6,7]
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,2,3]
+; X32-SSE41-NEXT:    pmovzxwq {{.*#+}} xmm3 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; X32-SSE41-NEXT:    psllq $58, %xmm3
+; X32-SSE41-NEXT:    movdqa %xmm3, %xmm4
+; X32-SSE41-NEXT:    psrad $31, %xmm4
+; X32-SSE41-NEXT:    psrad $26, %xmm3
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[1,1,3,3]
+; X32-SSE41-NEXT:    pblendw {{.*#+}} xmm3 = xmm3[0,1],xmm4[2,3],xmm3[4,5],xmm4[6,7]
+; X32-SSE41-NEXT:    retl
+entry:
+  %a = trunc i32 %x to i6
+  %b = insertelement <8 x i6> undef, i6 %a, i32 0
+  %c = shufflevector <8 x i6> %b, <8 x i6> undef, <8 x i32> zeroinitializer
+  %d = add <8 x i6> %c, <i6 0, i6 1, i6 2, i6 3, i6 4, i6 5, i6 6, i6 7>
+  %e = sext <8 x i6> %d to <8 x i64>
+  ret <8 x i64> %e
+}
diff --git a/test/CodeGen/X86/vector-sext.ll b/test/CodeGen/X86/vector-sext.ll
index 5449552..6466aad 100644
--- a/test/CodeGen/X86/vector-sext.ll
+++ b/test/CodeGen/X86/vector-sext.ll
@@ -6075,3 +6075,269 @@
   %b = sext <4 x i17> %a to <4 x i32>
   ret <4 x i32> %b
 }
+
+define <8 x i64> @sext_8i6_to_8i64(i32 %x) nounwind uwtable readnone ssp {
+; SSE2-LABEL: sext_8i6_to_8i64:
+; SSE2:       # %bb.0: # %entry
+; SSE2-NEXT:    movd %edi, %xmm0
+; SSE2-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSE2-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm3[0,1,0,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    psllq $58, %xmm0
+; SSE2-NEXT:    movdqa %xmm0, %xmm1
+; SSE2-NEXT:    psrad $31, %xmm1
+; SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; SSE2-NEXT:    psrad $26, %xmm0
+; SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,3,2,3]
+; SSE2-NEXT:    punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,1,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm1 = xmm1[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    psllq $58, %xmm1
+; SSE2-NEXT:    movdqa %xmm1, %xmm2
+; SSE2-NEXT:    psrad $31, %xmm2
+; SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; SSE2-NEXT:    psrad $26, %xmm1
+; SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; SSE2-NEXT:    punpckldq {{.*#+}} xmm1 = xmm1[0],xmm2[0],xmm1[1],xmm2[1]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,1,2,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm2 = xmm2[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    psllq $58, %xmm2
+; SSE2-NEXT:    movdqa %xmm2, %xmm4
+; SSE2-NEXT:    psrad $31, %xmm4
+; SSE2-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; SSE2-NEXT:    psrad $26, %xmm2
+; SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; SSE2-NEXT:    punpckldq {{.*#+}} xmm2 = xmm2[0],xmm4[0],xmm2[1],xmm4[1]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,3,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm3 = xmm3[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    psllq $58, %xmm3
+; SSE2-NEXT:    movdqa %xmm3, %xmm4
+; SSE2-NEXT:    psrad $31, %xmm4
+; SSE2-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; SSE2-NEXT:    psrad $26, %xmm3
+; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[1,3,2,3]
+; SSE2-NEXT:    punpckldq {{.*#+}} xmm3 = xmm3[0],xmm4[0],xmm3[1],xmm4[1]
+; SSE2-NEXT:    retq
+;
+; SSSE3-LABEL: sext_8i6_to_8i64:
+; SSSE3:       # %bb.0: # %entry
+; SSSE3-NEXT:    movd %edi, %xmm0
+; SSSE3-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSSE3-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm3[0,1,0,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    psllq $58, %xmm0
+; SSSE3-NEXT:    movdqa %xmm0, %xmm1
+; SSSE3-NEXT:    psrad $31, %xmm1
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; SSSE3-NEXT:    psrad $26, %xmm0
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,3,2,3]
+; SSSE3-NEXT:    punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,1,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm1 = xmm1[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    psllq $58, %xmm1
+; SSSE3-NEXT:    movdqa %xmm1, %xmm2
+; SSSE3-NEXT:    psrad $31, %xmm2
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; SSSE3-NEXT:    psrad $26, %xmm1
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; SSSE3-NEXT:    punpckldq {{.*#+}} xmm1 = xmm1[0],xmm2[0],xmm1[1],xmm2[1]
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,1,2,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm2 = xmm2[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    psllq $58, %xmm2
+; SSSE3-NEXT:    movdqa %xmm2, %xmm4
+; SSSE3-NEXT:    psrad $31, %xmm4
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; SSSE3-NEXT:    psrad $26, %xmm2
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; SSSE3-NEXT:    punpckldq {{.*#+}} xmm2 = xmm2[0],xmm4[0],xmm2[1],xmm4[1]
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,3,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm3 = xmm3[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    psllq $58, %xmm3
+; SSSE3-NEXT:    movdqa %xmm3, %xmm4
+; SSSE3-NEXT:    psrad $31, %xmm4
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; SSSE3-NEXT:    psrad $26, %xmm3
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[1,3,2,3]
+; SSSE3-NEXT:    punpckldq {{.*#+}} xmm3 = xmm3[0],xmm4[0],xmm3[1],xmm4[1]
+; SSSE3-NEXT:    retq
+;
+; SSE41-LABEL: sext_8i6_to_8i64:
+; SSE41:       # %bb.0: # %entry
+; SSE41-NEXT:    movd %edi, %xmm0
+; SSE41-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSE41-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm0 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; SSE41-NEXT:    psllq $58, %xmm0
+; SSE41-NEXT:    movdqa %xmm0, %xmm1
+; SSE41-NEXT:    psrad $31, %xmm1
+; SSE41-NEXT:    psrad $26, %xmm0
+; SSE41-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
+; SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm1[2,3],xmm0[4,5],xmm1[6,7]
+; SSE41-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,2,3]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm1 = xmm1[0],zero,zero,zero,xmm1[1],zero,zero,zero
+; SSE41-NEXT:    psllq $58, %xmm1
+; SSE41-NEXT:    movdqa %xmm1, %xmm2
+; SSE41-NEXT:    psrad $31, %xmm2
+; SSE41-NEXT:    psrad $26, %xmm1
+; SSE41-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
+; SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0,1],xmm2[2,3],xmm1[4,5],xmm2[6,7]
+; SSE41-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,3,0,1]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm2 = xmm2[0],zero,zero,zero,xmm2[1],zero,zero,zero
+; SSE41-NEXT:    psllq $58, %xmm2
+; SSE41-NEXT:    movdqa %xmm2, %xmm4
+; SSE41-NEXT:    psrad $31, %xmm4
+; SSE41-NEXT:    psrad $26, %xmm2
+; SSE41-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,1,3,3]
+; SSE41-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0,1],xmm4[2,3],xmm2[4,5],xmm4[6,7]
+; SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,2,3]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm3 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; SSE41-NEXT:    psllq $58, %xmm3
+; SSE41-NEXT:    movdqa %xmm3, %xmm4
+; SSE41-NEXT:    psrad $31, %xmm4
+; SSE41-NEXT:    psrad $26, %xmm3
+; SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[1,1,3,3]
+; SSE41-NEXT:    pblendw {{.*#+}} xmm3 = xmm3[0,1],xmm4[2,3],xmm3[4,5],xmm4[6,7]
+; SSE41-NEXT:    retq
+;
+; AVX1-LABEL: sext_8i6_to_8i64:
+; AVX1:       # %bb.0: # %entry
+; AVX1-NEXT:    vmovd %edi, %xmm0
+; AVX1-NEXT:    vpshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,0,0,0]
+; AVX1-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm0
+; AVX1-NEXT:    vpunpckhwd {{.*#+}} xmm1 = xmm0[4,4,5,5,6,6,7,7]
+; AVX1-NEXT:    vpslld $26, %xmm1, %xmm1
+; AVX1-NEXT:    vpsrad $26, %xmm1, %xmm1
+; AVX1-NEXT:    vpmovsxdq %xmm1, %xmm2
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm1 = xmm1[2,3,0,1]
+; AVX1-NEXT:    vpmovsxdq %xmm1, %xmm1
+; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm2, %ymm1
+; AVX1-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
+; AVX1-NEXT:    vpslld $26, %xmm0, %xmm0
+; AVX1-NEXT:    vpsrad $26, %xmm0, %xmm0
+; AVX1-NEXT:    vpmovsxdq %xmm0, %xmm2
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
+; AVX1-NEXT:    vpmovsxdq %xmm0, %xmm0
+; AVX1-NEXT:    vinsertf128 $1, %xmm0, %ymm2, %ymm0
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: sext_8i6_to_8i64:
+; AVX2:       # %bb.0: # %entry
+; AVX2-NEXT:    vmovd %edi, %xmm0
+; AVX2-NEXT:    vpbroadcastw %xmm0, %xmm0
+; AVX2-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm1
+; AVX2-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero
+; AVX2-NEXT:    vpslld $26, %xmm0, %xmm0
+; AVX2-NEXT:    vpsrad $26, %xmm0, %xmm0
+; AVX2-NEXT:    vpmovsxdq %xmm0, %ymm0
+; AVX2-NEXT:    vpunpckhwd {{.*#+}} xmm1 = xmm1[4],xmm0[4],xmm1[5],xmm0[5],xmm1[6],xmm0[6],xmm1[7],xmm0[7]
+; AVX2-NEXT:    vpslld $26, %xmm1, %xmm1
+; AVX2-NEXT:    vpsrad $26, %xmm1, %xmm1
+; AVX2-NEXT:    vpmovsxdq %xmm1, %ymm1
+; AVX2-NEXT:    retq
+;
+; AVX512-LABEL: sext_8i6_to_8i64:
+; AVX512:       # %bb.0: # %entry
+; AVX512-NEXT:    vmovd %edi, %xmm0
+; AVX512-NEXT:    vpbroadcastw %xmm0, %xmm0
+; AVX512-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm0
+; AVX512-NEXT:    vpmovzxwq {{.*#+}} zmm0 = 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
+; AVX512-NEXT:    vpsllq $58, %zmm0, %zmm0
+; AVX512-NEXT:    vpsraq $58, %zmm0, %zmm0
+; AVX512-NEXT:    retq
+;
+; X32-SSE2-LABEL: sext_8i6_to_8i64:
+; X32-SSE2:       # %bb.0: # %entry
+; X32-SSE2-NEXT:    movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; X32-SSE2-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; X32-SSE2-NEXT:    paddw {{\.LCPI.*}}, %xmm3
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm3[0,1,0,3]
+; X32-SSE2-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,5,6,7]
+; X32-SSE2-NEXT:    psllq $58, %xmm0
+; X32-SSE2-NEXT:    movdqa %xmm0, %xmm1
+; X32-SSE2-NEXT:    psrad $31, %xmm1
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; X32-SSE2-NEXT:    psrad $26, %xmm0
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,3,2,3]
+; X32-SSE2-NEXT:    punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,1,3]
+; X32-SSE2-NEXT:    pshufhw {{.*#+}} xmm1 = xmm1[0,1,2,3,5,5,6,7]
+; X32-SSE2-NEXT:    psllq $58, %xmm1
+; X32-SSE2-NEXT:    movdqa %xmm1, %xmm2
+; X32-SSE2-NEXT:    psrad $31, %xmm2
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; X32-SSE2-NEXT:    psrad $26, %xmm1
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,3,2,3]
+; X32-SSE2-NEXT:    punpckldq {{.*#+}} xmm1 = xmm1[0],xmm2[0],xmm1[1],xmm2[1]
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,1,2,3]
+; X32-SSE2-NEXT:    pshufhw {{.*#+}} xmm2 = xmm2[0,1,2,3,5,5,6,7]
+; X32-SSE2-NEXT:    psllq $58, %xmm2
+; X32-SSE2-NEXT:    movdqa %xmm2, %xmm4
+; X32-SSE2-NEXT:    psrad $31, %xmm4
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; X32-SSE2-NEXT:    psrad $26, %xmm2
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,3,2,3]
+; X32-SSE2-NEXT:    punpckldq {{.*#+}} xmm2 = xmm2[0],xmm4[0],xmm2[1],xmm4[1]
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,3,3]
+; X32-SSE2-NEXT:    pshufhw {{.*#+}} xmm3 = xmm3[0,1,2,3,5,5,6,7]
+; X32-SSE2-NEXT:    psllq $58, %xmm3
+; X32-SSE2-NEXT:    movdqa %xmm3, %xmm4
+; X32-SSE2-NEXT:    psrad $31, %xmm4
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm4 = xmm4[1,3,2,3]
+; X32-SSE2-NEXT:    psrad $26, %xmm3
+; X32-SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[1,3,2,3]
+; X32-SSE2-NEXT:    punpckldq {{.*#+}} xmm3 = xmm3[0],xmm4[0],xmm3[1],xmm4[1]
+; X32-SSE2-NEXT:    retl
+;
+; X32-SSE41-LABEL: sext_8i6_to_8i64:
+; X32-SSE41:       # %bb.0: # %entry
+; X32-SSE41-NEXT:    movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; X32-SSE41-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; X32-SSE41-NEXT:    paddw {{\.LCPI.*}}, %xmm3
+; X32-SSE41-NEXT:    pmovzxwq {{.*#+}} xmm0 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; X32-SSE41-NEXT:    psllq $58, %xmm0
+; X32-SSE41-NEXT:    movdqa %xmm0, %xmm1
+; X32-SSE41-NEXT:    psrad $31, %xmm1
+; X32-SSE41-NEXT:    psrad $26, %xmm0
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
+; X32-SSE41-NEXT:    pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm1[2,3],xmm0[4,5],xmm1[6,7]
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,2,3]
+; X32-SSE41-NEXT:    pmovzxwq {{.*#+}} xmm1 = xmm1[0],zero,zero,zero,xmm1[1],zero,zero,zero
+; X32-SSE41-NEXT:    psllq $58, %xmm1
+; X32-SSE41-NEXT:    movdqa %xmm1, %xmm2
+; X32-SSE41-NEXT:    psrad $31, %xmm2
+; X32-SSE41-NEXT:    psrad $26, %xmm1
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
+; X32-SSE41-NEXT:    pblendw {{.*#+}} xmm1 = xmm1[0,1],xmm2[2,3],xmm1[4,5],xmm2[6,7]
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,3,0,1]
+; X32-SSE41-NEXT:    pmovzxwq {{.*#+}} xmm2 = xmm2[0],zero,zero,zero,xmm2[1],zero,zero,zero
+; X32-SSE41-NEXT:    psllq $58, %xmm2
+; X32-SSE41-NEXT:    movdqa %xmm2, %xmm4
+; X32-SSE41-NEXT:    psrad $31, %xmm4
+; X32-SSE41-NEXT:    psrad $26, %xmm2
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,1,3,3]
+; X32-SSE41-NEXT:    pblendw {{.*#+}} xmm2 = xmm2[0,1],xmm4[2,3],xmm2[4,5],xmm4[6,7]
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,2,3]
+; X32-SSE41-NEXT:    pmovzxwq {{.*#+}} xmm3 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; X32-SSE41-NEXT:    psllq $58, %xmm3
+; X32-SSE41-NEXT:    movdqa %xmm3, %xmm4
+; X32-SSE41-NEXT:    psrad $31, %xmm4
+; X32-SSE41-NEXT:    psrad $26, %xmm3
+; X32-SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[1,1,3,3]
+; X32-SSE41-NEXT:    pblendw {{.*#+}} xmm3 = xmm3[0,1],xmm4[2,3],xmm3[4,5],xmm4[6,7]
+; X32-SSE41-NEXT:    retl
+entry:
+  %a = trunc i32 %x to i6
+  %b = insertelement <8 x i6> undef, i6 %a, i32 0
+  %c = shufflevector <8 x i6> %b, <8 x i6> undef, <8 x i32> zeroinitializer
+  %d = add <8 x i6> %c, <i6 0, i6 1, i6 2, i6 3, i6 4, i6 5, i6 6, i6 7>
+  %e = sext <8 x i6> %d to <8 x i64>
+  ret <8 x i64> %e
+}
diff --git a/test/CodeGen/X86/vector-zext-widen.ll b/test/CodeGen/X86/vector-zext-widen.ll
index 4d7a4f3..df9d846 100644
--- a/test/CodeGen/X86/vector-zext-widen.ll
+++ b/test/CodeGen/X86/vector-zext-widen.ll
@@ -2402,3 +2402,116 @@
   %b = zext <4 x i17> %a to <4 x i32>
   ret <4 x i32> %b
 }
+
+define <8 x i64> @zext_8i6_to_8i64(i32 %x) nounwind uwtable readnone ssp {
+; SSE2-LABEL: zext_8i6_to_8i64:
+; SSE2:       # %bb.0: # %entry
+; SSE2-NEXT:    movd %edi, %xmm0
+; SSE2-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSE2-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm3[0,1,0,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    movdqa {{.*#+}} xmm4 = [63,63]
+; SSE2-NEXT:    pand %xmm4, %xmm0
+; SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,1,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm1 = xmm1[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    pand %xmm4, %xmm1
+; SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,1,2,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm2 = xmm2[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    pand %xmm4, %xmm2
+; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,3,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm3 = xmm3[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    pand %xmm4, %xmm3
+; SSE2-NEXT:    retq
+;
+; SSSE3-LABEL: zext_8i6_to_8i64:
+; SSSE3:       # %bb.0: # %entry
+; SSSE3-NEXT:    movd %edi, %xmm0
+; SSSE3-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSSE3-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm3[0,1,0,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [63,63]
+; SSSE3-NEXT:    pand %xmm4, %xmm0
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,1,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm1 = xmm1[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    pand %xmm4, %xmm1
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,1,2,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm2 = xmm2[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    pand %xmm4, %xmm2
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,3,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm3 = xmm3[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    pand %xmm4, %xmm3
+; SSSE3-NEXT:    retq
+;
+; SSE41-LABEL: zext_8i6_to_8i64:
+; SSE41:       # %bb.0: # %entry
+; SSE41-NEXT:    movd %edi, %xmm0
+; SSE41-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSE41-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm0 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; SSE41-NEXT:    movdqa {{.*#+}} xmm4 = [63,63]
+; SSE41-NEXT:    pand %xmm4, %xmm0
+; SSE41-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,2,3]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm1 = xmm1[0],zero,zero,zero,xmm1[1],zero,zero,zero
+; SSE41-NEXT:    pand %xmm4, %xmm1
+; SSE41-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,3,0,1]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm2 = xmm2[0],zero,zero,zero,xmm2[1],zero,zero,zero
+; SSE41-NEXT:    pand %xmm4, %xmm2
+; SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,2,3]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm3 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; SSE41-NEXT:    pand %xmm4, %xmm3
+; SSE41-NEXT:    retq
+;
+; AVX1-LABEL: zext_8i6_to_8i64:
+; AVX1:       # %bb.0: # %entry
+; AVX1-NEXT:    vmovd %edi, %xmm0
+; AVX1-NEXT:    vpshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,0,0,0]
+; AVX1-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm0
+; AVX1-NEXT:    vpunpckhwd {{.*#+}} xmm1 = xmm0[4,4,5,5,6,6,7,7]
+; AVX1-NEXT:    vpmovzxdq {{.*#+}} xmm2 = xmm1[0],zero,xmm1[1],zero
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm1 = xmm1[2,2,3,3]
+; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm2, %ymm1
+; AVX1-NEXT:    vmovaps {{.*#+}} ymm2 = [63,63,63,63]
+; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
+; AVX1-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
+; AVX1-NEXT:    vpmovzxdq {{.*#+}} xmm3 = xmm0[0],zero,xmm0[1],zero
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[2,2,3,3]
+; AVX1-NEXT:    vinsertf128 $1, %xmm0, %ymm3, %ymm0
+; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: zext_8i6_to_8i64:
+; AVX2:       # %bb.0: # %entry
+; AVX2-NEXT:    vmovd %edi, %xmm0
+; AVX2-NEXT:    vpbroadcastw %xmm0, %xmm0
+; AVX2-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm1
+; AVX2-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero
+; AVX2-NEXT:    vpmovzxdq {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
+; AVX2-NEXT:    vpbroadcastq {{.*#+}} ymm2 = [63,63,63,63]
+; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
+; AVX2-NEXT:    vpunpckhwd {{.*#+}} xmm1 = xmm1[4],xmm0[4],xmm1[5],xmm0[5],xmm1[6],xmm0[6],xmm1[7],xmm0[7]
+; AVX2-NEXT:    vpmovzxdq {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero
+; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
+; AVX2-NEXT:    retq
+;
+; AVX512-LABEL: zext_8i6_to_8i64:
+; AVX512:       # %bb.0: # %entry
+; AVX512-NEXT:    vmovd %edi, %xmm0
+; AVX512-NEXT:    vpbroadcastw %xmm0, %xmm0
+; AVX512-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm0
+; AVX512-NEXT:    vpmovzxwq {{.*#+}} zmm0 = 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
+; AVX512-NEXT:    vpandq {{.*}}(%rip){1to8}, %zmm0, %zmm0
+; AVX512-NEXT:    retq
+entry:
+  %a = trunc i32 %x to i6
+  %b = insertelement <8 x i6> undef, i6 %a, i32 0
+  %c = shufflevector <8 x i6> %b, <8 x i6> undef, <8 x i32> zeroinitializer
+  %d = add <8 x i6> %c, <i6 0, i6 1, i6 2, i6 3, i6 4, i6 5, i6 6, i6 7>
+  %e = zext <8 x i6> %d to <8 x i64>
+  ret <8 x i64> %e
+}
diff --git a/test/CodeGen/X86/vector-zext.ll b/test/CodeGen/X86/vector-zext.ll
index d198348..edbfd1d 100644
--- a/test/CodeGen/X86/vector-zext.ll
+++ b/test/CodeGen/X86/vector-zext.ll
@@ -2416,3 +2416,116 @@
   %b = zext <4 x i17> %a to <4 x i32>
   ret <4 x i32> %b
 }
+
+define <8 x i64> @zext_8i6_to_8i64(i32 %x) nounwind uwtable readnone ssp {
+; SSE2-LABEL: zext_8i6_to_8i64:
+; SSE2:       # %bb.0: # %entry
+; SSE2-NEXT:    movd %edi, %xmm0
+; SSE2-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSE2-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm3[0,1,0,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    movdqa {{.*#+}} xmm4 = [63,63]
+; SSE2-NEXT:    pand %xmm4, %xmm0
+; SSE2-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,1,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm1 = xmm1[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    pand %xmm4, %xmm1
+; SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,1,2,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm2 = xmm2[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    pand %xmm4, %xmm2
+; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,3,3]
+; SSE2-NEXT:    pshufhw {{.*#+}} xmm3 = xmm3[0,1,2,3,5,5,6,7]
+; SSE2-NEXT:    pand %xmm4, %xmm3
+; SSE2-NEXT:    retq
+;
+; SSSE3-LABEL: zext_8i6_to_8i64:
+; SSSE3:       # %bb.0: # %entry
+; SSSE3-NEXT:    movd %edi, %xmm0
+; SSSE3-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSSE3-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm3[0,1,0,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [63,63]
+; SSSE3-NEXT:    pand %xmm4, %xmm0
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,1,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm1 = xmm1[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    pand %xmm4, %xmm1
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,1,2,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm2 = xmm2[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    pand %xmm4, %xmm2
+; SSSE3-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,3,3]
+; SSSE3-NEXT:    pshufhw {{.*#+}} xmm3 = xmm3[0,1,2,3,5,5,6,7]
+; SSSE3-NEXT:    pand %xmm4, %xmm3
+; SSSE3-NEXT:    retq
+;
+; SSE41-LABEL: zext_8i6_to_8i64:
+; SSE41:       # %bb.0: # %entry
+; SSE41-NEXT:    movd %edi, %xmm0
+; SSE41-NEXT:    pshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[0,0,0,0]
+; SSE41-NEXT:    paddw {{.*}}(%rip), %xmm3
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm0 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; SSE41-NEXT:    movdqa {{.*#+}} xmm4 = [63,63]
+; SSE41-NEXT:    pand %xmm4, %xmm0
+; SSE41-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,2,3]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm1 = xmm1[0],zero,zero,zero,xmm1[1],zero,zero,zero
+; SSE41-NEXT:    pand %xmm4, %xmm1
+; SSE41-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[2,3,0,1]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm2 = xmm2[0],zero,zero,zero,xmm2[1],zero,zero,zero
+; SSE41-NEXT:    pand %xmm4, %xmm2
+; SSE41-NEXT:    pshufd {{.*#+}} xmm3 = xmm3[3,1,2,3]
+; SSE41-NEXT:    pmovzxwq {{.*#+}} xmm3 = xmm3[0],zero,zero,zero,xmm3[1],zero,zero,zero
+; SSE41-NEXT:    pand %xmm4, %xmm3
+; SSE41-NEXT:    retq
+;
+; AVX1-LABEL: zext_8i6_to_8i64:
+; AVX1:       # %bb.0: # %entry
+; AVX1-NEXT:    vmovd %edi, %xmm0
+; AVX1-NEXT:    vpshuflw {{.*#+}} xmm0 = xmm0[0,0,2,3,4,5,6,7]
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,0,0,0]
+; AVX1-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm0
+; AVX1-NEXT:    vpunpckhwd {{.*#+}} xmm1 = xmm0[4,4,5,5,6,6,7,7]
+; AVX1-NEXT:    vpmovzxdq {{.*#+}} xmm2 = xmm1[0],zero,xmm1[1],zero
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm1 = xmm1[2,2,3,3]
+; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm2, %ymm1
+; AVX1-NEXT:    vmovaps {{.*#+}} ymm2 = [63,63,63,63]
+; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
+; AVX1-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
+; AVX1-NEXT:    vpmovzxdq {{.*#+}} xmm3 = xmm0[0],zero,xmm0[1],zero
+; AVX1-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[2,2,3,3]
+; AVX1-NEXT:    vinsertf128 $1, %xmm0, %ymm3, %ymm0
+; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: zext_8i6_to_8i64:
+; AVX2:       # %bb.0: # %entry
+; AVX2-NEXT:    vmovd %edi, %xmm0
+; AVX2-NEXT:    vpbroadcastw %xmm0, %xmm0
+; AVX2-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm1
+; AVX2-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero
+; AVX2-NEXT:    vpmovzxdq {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
+; AVX2-NEXT:    vpbroadcastq {{.*#+}} ymm2 = [63,63,63,63]
+; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
+; AVX2-NEXT:    vpunpckhwd {{.*#+}} xmm1 = xmm1[4],xmm0[4],xmm1[5],xmm0[5],xmm1[6],xmm0[6],xmm1[7],xmm0[7]
+; AVX2-NEXT:    vpmovzxdq {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero
+; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
+; AVX2-NEXT:    retq
+;
+; AVX512-LABEL: zext_8i6_to_8i64:
+; AVX512:       # %bb.0: # %entry
+; AVX512-NEXT:    vmovd %edi, %xmm0
+; AVX512-NEXT:    vpbroadcastw %xmm0, %xmm0
+; AVX512-NEXT:    vpaddw {{.*}}(%rip), %xmm0, %xmm0
+; AVX512-NEXT:    vpmovzxwq {{.*#+}} zmm0 = 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
+; AVX512-NEXT:    vpandq {{.*}}(%rip){1to8}, %zmm0, %zmm0
+; AVX512-NEXT:    retq
+entry:
+  %a = trunc i32 %x to i6
+  %b = insertelement <8 x i6> undef, i6 %a, i32 0
+  %c = shufflevector <8 x i6> %b, <8 x i6> undef, <8 x i32> zeroinitializer
+  %d = add <8 x i6> %c, <i6 0, i6 1, i6 2, i6 3, i6 4, i6 5, i6 6, i6 7>
+  %e = zext <8 x i6> %d to <8 x i64>
+  ret <8 x i64> %e
+}