[llvm] r359116 - [X86][SSE] Add tests for bitcasting vXi1 bool vectors to non-simple types.

Simon Pilgrim via llvm-commits llvm-commits at lists.llvm.org
Wed Apr 24 10:25:45 PDT 2019


Author: rksimon
Date: Wed Apr 24 10:25:45 2019
New Revision: 359116

URL: http://llvm.org/viewvc/llvm-project?rev=359116&view=rev
Log:
[X86][SSE] Add tests for bitcasting vXi1 bool vectors to non-simple types.

Added:
    llvm/trunk/test/CodeGen/X86/bitcast-vector-bool.ll

Added: llvm/trunk/test/CodeGen/X86/bitcast-vector-bool.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/bitcast-vector-bool.ll?rev=359116&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/bitcast-vector-bool.ll (added)
+++ llvm/trunk/test/CodeGen/X86/bitcast-vector-bool.ll Wed Apr 24 10:25:45 2019
@@ -0,0 +1,2319 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefixes=SSE2-SSSE3,SSE2
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+ssse3 | FileCheck %s --check-prefixes=SSE2-SSSE3,SSSE3
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck %s --check-prefixes=AVX12,AVX1
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefixes=AVX12,AVX2
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f,+avx512vl,+avx512bw | FileCheck %s --check-prefixes=AVX512
+
+;
+; 128-bit vectors
+;
+
+define i1 @bitcast_v2i64_to_v2i1(<2 x i64> %a0) nounwind {
+; SSE2-SSSE3-LABEL: bitcast_v2i64_to_v2i1:
+; SSE2-SSSE3:       # %bb.0:
+; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm1 = [2147483648,2147483648]
+; SSE2-SSSE3-NEXT:    pxor %xmm1, %xmm0
+; SSE2-SSSE3-NEXT:    movdqa %xmm1, %xmm2
+; SSE2-SSSE3-NEXT:    pcmpgtd %xmm0, %xmm2
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm3 = xmm2[0,0,2,2]
+; SSE2-SSSE3-NEXT:    pcmpeqd %xmm1, %xmm0
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
+; SSE2-SSSE3-NEXT:    pand %xmm3, %xmm0
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm2[1,1,3,3]
+; SSE2-SSSE3-NEXT:    por %xmm0, %xmm1
+; SSE2-SSSE3-NEXT:    movdqa %xmm1, -{{[0-9]+}}(%rsp)
+; SSE2-SSSE3-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    retq
+;
+; AVX12-LABEL: bitcast_v2i64_to_v2i1:
+; AVX12:       # %bb.0:
+; AVX12-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX12-NEXT:    vpcmpgtq %xmm0, %xmm1, %xmm0
+; AVX12-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX12-NEXT:    vpextrb $8, %xmm0, %eax
+; AVX12-NEXT:    addb %cl, %al
+; AVX12-NEXT:    # kill: def $al killed $al killed $eax
+; AVX12-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v2i64_to_v2i1:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX512-NEXT:    vpcmpgtq %xmm0, %xmm1, %k0
+; AVX512-NEXT:    kshiftrw $1, %k0, %k1
+; AVX512-NEXT:    kmovd %k1, %ecx
+; AVX512-NEXT:    kmovd %k0, %eax
+; AVX512-NEXT:    addb %cl, %al
+; AVX512-NEXT:    # kill: def $al killed $al killed $eax
+; AVX512-NEXT:    retq
+  %1 = icmp slt <2 x i64> %a0, zeroinitializer
+  %2 = bitcast <2 x i1> %1 to <2 x i1>
+  %3 = extractelement <2 x i1> %2, i32 0
+  %4 = extractelement <2 x i1> %2, i32 1
+  %5 = add i1 %3, %4
+  ret i1 %5
+}
+
+define i2 @bitcast_v4i32_to_v2i2(<4 x i32> %a0) nounwind {
+; SSE2-SSSE3-LABEL: bitcast_v4i32_to_v2i2:
+; SSE2-SSSE3:       # %bb.0:
+; SSE2-SSSE3-NEXT:    pxor %xmm1, %xmm1
+; SSE2-SSSE3-NEXT:    pcmpgtd %xmm0, %xmm1
+; SSE2-SSSE3-NEXT:    movd %xmm1, %eax
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm1[1,1,2,3]
+; SSE2-SSSE3-NEXT:    movd %xmm0, %ecx
+; SSE2-SSSE3-NEXT:    andb $1, %cl
+; SSE2-SSSE3-NEXT:    addb %cl, %cl
+; SSE2-SSSE3-NEXT:    subb %al, %cl
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm1[2,3,0,1]
+; SSE2-SSSE3-NEXT:    movd %xmm0, %eax
+; SSE2-SSSE3-NEXT:    andb $1, %al
+; SSE2-SSSE3-NEXT:    shlb $2, %al
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm1[3,1,2,3]
+; SSE2-SSSE3-NEXT:    movd %xmm0, %edx
+; SSE2-SSSE3-NEXT:    shlb $3, %dl
+; SSE2-SSSE3-NEXT:    orb %al, %dl
+; SSE2-SSSE3-NEXT:    orb %cl, %dl
+; SSE2-SSSE3-NEXT:    andb $15, %dl
+; SSE2-SSSE3-NEXT:    movzbl %dl, %eax
+; SSE2-SSSE3-NEXT:    movl %eax, %ecx
+; SSE2-SSSE3-NEXT:    shrl $2, %ecx
+; SSE2-SSSE3-NEXT:    movq %rcx, %xmm0
+; SSE2-SSSE3-NEXT:    andl $3, %eax
+; SSE2-SSSE3-NEXT:    movq %rax, %xmm1
+; SSE2-SSSE3-NEXT:    punpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm0[0]
+; SSE2-SSSE3-NEXT:    movdqa %xmm1, -{{[0-9]+}}(%rsp)
+; SSE2-SSSE3-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    retq
+;
+; AVX12-LABEL: bitcast_v4i32_to_v2i2:
+; AVX12:       # %bb.0:
+; AVX12-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX12-NEXT:    vpcmpgtd %xmm0, %xmm1, %xmm0
+; AVX12-NEXT:    vmovd %xmm0, %eax
+; AVX12-NEXT:    vpextrd $1, %xmm0, %ecx
+; AVX12-NEXT:    andb $1, %cl
+; AVX12-NEXT:    addb %cl, %cl
+; AVX12-NEXT:    subb %al, %cl
+; AVX12-NEXT:    vpextrd $2, %xmm0, %eax
+; AVX12-NEXT:    andb $1, %al
+; AVX12-NEXT:    shlb $2, %al
+; AVX12-NEXT:    vpextrd $3, %xmm0, %edx
+; AVX12-NEXT:    shlb $3, %dl
+; AVX12-NEXT:    orb %al, %dl
+; AVX12-NEXT:    orb %cl, %dl
+; AVX12-NEXT:    andb $15, %dl
+; AVX12-NEXT:    movzbl %dl, %eax
+; AVX12-NEXT:    movl %eax, %ecx
+; AVX12-NEXT:    shrl $2, %ecx
+; AVX12-NEXT:    vmovd %ecx, %xmm0
+; AVX12-NEXT:    andl $3, %eax
+; AVX12-NEXT:    vmovd %eax, %xmm1
+; AVX12-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX12-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX12-NEXT:    addb %cl, %al
+; AVX12-NEXT:    # kill: def $al killed $al killed $eax
+; AVX12-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v4i32_to_v2i2:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX512-NEXT:    vpcmpgtd %xmm0, %xmm1, %k0
+; AVX512-NEXT:    kmovd %k0, %eax
+; AVX512-NEXT:    movzbl %al, %ecx
+; AVX512-NEXT:    shrl $2, %ecx
+; AVX512-NEXT:    andl $3, %ecx
+; AVX512-NEXT:    vmovd %ecx, %xmm0
+; AVX512-NEXT:    andl $3, %eax
+; AVX512-NEXT:    vmovd %eax, %xmm1
+; AVX512-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX512-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX512-NEXT:    addb %cl, %al
+; AVX512-NEXT:    # kill: def $al killed $al killed $eax
+; AVX512-NEXT:    retq
+  %1 = icmp slt <4 x i32> %a0, zeroinitializer
+  %2 = bitcast <4 x i1> %1 to <2 x i2>
+  %3 = extractelement <2 x i2> %2, i32 0
+  %4 = extractelement <2 x i2> %2, i32 1
+  %5 = add i2 %3, %4
+  ret i2 %5
+}
+
+define i4 @bitcast_v8i16_to_v2i4(<8 x i16> %a0) nounwind {
+; SSE2-SSSE3-LABEL: bitcast_v8i16_to_v2i4:
+; SSE2-SSSE3:       # %bb.0:
+; SSE2-SSSE3-NEXT:    pxor %xmm1, %xmm1
+; SSE2-SSSE3-NEXT:    pcmpgtw %xmm0, %xmm1
+; SSE2-SSSE3-NEXT:    movd %xmm1, %ecx
+; SSE2-SSSE3-NEXT:    pextrw $1, %xmm1, %eax
+; SSE2-SSSE3-NEXT:    andb $1, %al
+; SSE2-SSSE3-NEXT:    addb %al, %al
+; SSE2-SSSE3-NEXT:    subb %cl, %al
+; SSE2-SSSE3-NEXT:    pextrw $2, %xmm1, %ecx
+; SSE2-SSSE3-NEXT:    andb $1, %cl
+; SSE2-SSSE3-NEXT:    shlb $2, %cl
+; SSE2-SSSE3-NEXT:    pextrw $3, %xmm1, %edx
+; SSE2-SSSE3-NEXT:    andb $1, %dl
+; SSE2-SSSE3-NEXT:    shlb $3, %dl
+; SSE2-SSSE3-NEXT:    orb %cl, %dl
+; SSE2-SSSE3-NEXT:    pextrw $4, %xmm1, %ecx
+; SSE2-SSSE3-NEXT:    andb $1, %cl
+; SSE2-SSSE3-NEXT:    shlb $4, %cl
+; SSE2-SSSE3-NEXT:    orb %dl, %cl
+; SSE2-SSSE3-NEXT:    pextrw $5, %xmm1, %edx
+; SSE2-SSSE3-NEXT:    andb $1, %dl
+; SSE2-SSSE3-NEXT:    shlb $5, %dl
+; SSE2-SSSE3-NEXT:    orb %cl, %dl
+; SSE2-SSSE3-NEXT:    pextrw $6, %xmm1, %ecx
+; SSE2-SSSE3-NEXT:    andb $1, %cl
+; SSE2-SSSE3-NEXT:    shlb $6, %cl
+; SSE2-SSSE3-NEXT:    orb %dl, %cl
+; SSE2-SSSE3-NEXT:    pextrw $7, %xmm1, %edx
+; SSE2-SSSE3-NEXT:    shlb $7, %dl
+; SSE2-SSSE3-NEXT:    orb %cl, %dl
+; SSE2-SSSE3-NEXT:    orb %al, %dl
+; SSE2-SSSE3-NEXT:    movzbl %dl, %eax
+; SSE2-SSSE3-NEXT:    movq %rax, %rcx
+; SSE2-SSSE3-NEXT:    shrq $4, %rcx
+; SSE2-SSSE3-NEXT:    movq %rcx, %xmm0
+; SSE2-SSSE3-NEXT:    andl $15, %eax
+; SSE2-SSSE3-NEXT:    movq %rax, %xmm1
+; SSE2-SSSE3-NEXT:    punpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm0[0]
+; SSE2-SSSE3-NEXT:    movdqa %xmm1, -{{[0-9]+}}(%rsp)
+; SSE2-SSSE3-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    retq
+;
+; AVX12-LABEL: bitcast_v8i16_to_v2i4:
+; AVX12:       # %bb.0:
+; AVX12-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX12-NEXT:    vpcmpgtw %xmm0, %xmm1, %xmm0
+; AVX12-NEXT:    vmovd %xmm0, %ecx
+; AVX12-NEXT:    vpextrw $1, %xmm0, %eax
+; AVX12-NEXT:    andb $1, %al
+; AVX12-NEXT:    addb %al, %al
+; AVX12-NEXT:    subb %cl, %al
+; AVX12-NEXT:    vpextrw $2, %xmm0, %ecx
+; AVX12-NEXT:    andb $1, %cl
+; AVX12-NEXT:    shlb $2, %cl
+; AVX12-NEXT:    vpextrw $3, %xmm0, %edx
+; AVX12-NEXT:    andb $1, %dl
+; AVX12-NEXT:    shlb $3, %dl
+; AVX12-NEXT:    orb %cl, %dl
+; AVX12-NEXT:    vpextrw $4, %xmm0, %ecx
+; AVX12-NEXT:    andb $1, %cl
+; AVX12-NEXT:    shlb $4, %cl
+; AVX12-NEXT:    orb %dl, %cl
+; AVX12-NEXT:    vpextrw $5, %xmm0, %edx
+; AVX12-NEXT:    andb $1, %dl
+; AVX12-NEXT:    shlb $5, %dl
+; AVX12-NEXT:    orb %cl, %dl
+; AVX12-NEXT:    vpextrw $6, %xmm0, %ecx
+; AVX12-NEXT:    andb $1, %cl
+; AVX12-NEXT:    shlb $6, %cl
+; AVX12-NEXT:    orb %dl, %cl
+; AVX12-NEXT:    vpextrw $7, %xmm0, %edx
+; AVX12-NEXT:    shlb $7, %dl
+; AVX12-NEXT:    orb %cl, %dl
+; AVX12-NEXT:    orb %al, %dl
+; AVX12-NEXT:    movzbl %dl, %eax
+; AVX12-NEXT:    movl %eax, %ecx
+; AVX12-NEXT:    shrl $4, %ecx
+; AVX12-NEXT:    vmovd %ecx, %xmm0
+; AVX12-NEXT:    andl $15, %eax
+; AVX12-NEXT:    vmovd %eax, %xmm1
+; AVX12-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX12-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX12-NEXT:    addb %cl, %al
+; AVX12-NEXT:    # kill: def $al killed $al killed $eax
+; AVX12-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v8i16_to_v2i4:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vpmovw2m %xmm0, %k0
+; AVX512-NEXT:    kmovd %k0, %eax
+; AVX512-NEXT:    movzbl %al, %ecx
+; AVX512-NEXT:    shrl $4, %ecx
+; AVX512-NEXT:    vmovd %ecx, %xmm0
+; AVX512-NEXT:    andl $15, %eax
+; AVX512-NEXT:    vmovd %eax, %xmm1
+; AVX512-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX512-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX512-NEXT:    addb %cl, %al
+; AVX512-NEXT:    # kill: def $al killed $al killed $eax
+; AVX512-NEXT:    retq
+  %1 = icmp slt <8 x i16> %a0, zeroinitializer
+  %2 = bitcast <8 x i1> %1 to <2 x i4>
+  %3 = extractelement <2 x i4> %2, i32 0
+  %4 = extractelement <2 x i4> %2, i32 1
+  %5 = add i4 %3, %4
+  ret i4 %5
+}
+
+define i8 @bitcast_v16i8_to_v2i8(<16 x i8> %a0) nounwind {
+; SSE2-LABEL: bitcast_v16i8_to_v2i8:
+; SSE2:       # %bb.0:
+; SSE2-NEXT:    pxor %xmm1, %xmm1
+; SSE2-NEXT:    pcmpgtb %xmm0, %xmm1
+; SSE2-NEXT:    movdqa %xmm1, -{{[0-9]+}}(%rsp)
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSE2-NEXT:    andl $1, %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    leal (%rcx,%rax,2), %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    leal (%rax,%rcx,4), %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    leal (%rax,%rcx,8), %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $4, %ecx
+; SSE2-NEXT:    orl %eax, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSE2-NEXT:    andl $1, %eax
+; SSE2-NEXT:    shll $5, %eax
+; SSE2-NEXT:    orl %ecx, %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $6, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $7, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $8, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $9, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $10, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $11, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $12, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $13, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $14, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    shll $15, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    orl %eax, %edx
+; SSE2-NEXT:    movd %edx, %xmm0
+; SSE2-NEXT:    punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
+; SSE2-NEXT:    punpcklwd {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[0,1,1,3]
+; SSE2-NEXT:    movdqa %xmm0, -{{[0-9]+}}(%rsp)
+; SSE2-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSE2-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSE2-NEXT:    retq
+;
+; SSSE3-LABEL: bitcast_v16i8_to_v2i8:
+; SSSE3:       # %bb.0:
+; SSSE3-NEXT:    pxor %xmm1, %xmm1
+; SSSE3-NEXT:    pcmpgtb %xmm0, %xmm1
+; SSSE3-NEXT:    movdqa %xmm1, -{{[0-9]+}}(%rsp)
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSSE3-NEXT:    andl $1, %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    leal (%rcx,%rax,2), %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    leal (%rax,%rcx,4), %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    leal (%rax,%rcx,8), %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $4, %ecx
+; SSSE3-NEXT:    orl %eax, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSSE3-NEXT:    andl $1, %eax
+; SSSE3-NEXT:    shll $5, %eax
+; SSSE3-NEXT:    orl %ecx, %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $6, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $7, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $8, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $9, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $10, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $11, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $12, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $13, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $14, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    shll $15, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    orl %eax, %edx
+; SSSE3-NEXT:    movd %edx, %xmm0
+; SSSE3-NEXT:    pshufb {{.*#+}} xmm0 = xmm0[0],zero,zero,zero,zero,zero,zero,zero,xmm0[1],zero,zero,zero,zero,zero,zero,zero
+; SSSE3-NEXT:    movdqa %xmm0, -{{[0-9]+}}(%rsp)
+; SSSE3-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSSE3-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSSE3-NEXT:    retq
+;
+; AVX12-LABEL: bitcast_v16i8_to_v2i8:
+; AVX12:       # %bb.0:
+; AVX12-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX12-NEXT:    vpcmpgtb %xmm0, %xmm1, %xmm0
+; AVX12-NEXT:    vpextrb $1, %xmm0, %eax
+; AVX12-NEXT:    andl $1, %eax
+; AVX12-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX12-NEXT:    andl $1, %ecx
+; AVX12-NEXT:    leal (%rcx,%rax,2), %eax
+; AVX12-NEXT:    vpextrb $2, %xmm0, %ecx
+; AVX12-NEXT:    andl $1, %ecx
+; AVX12-NEXT:    leal (%rax,%rcx,4), %eax
+; AVX12-NEXT:    vpextrb $3, %xmm0, %ecx
+; AVX12-NEXT:    andl $1, %ecx
+; AVX12-NEXT:    leal (%rax,%rcx,8), %eax
+; AVX12-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX12-NEXT:    andl $1, %ecx
+; AVX12-NEXT:    shll $4, %ecx
+; AVX12-NEXT:    orl %eax, %ecx
+; AVX12-NEXT:    vpextrb $5, %xmm0, %eax
+; AVX12-NEXT:    andl $1, %eax
+; AVX12-NEXT:    shll $5, %eax
+; AVX12-NEXT:    orl %ecx, %eax
+; AVX12-NEXT:    vpextrb $6, %xmm0, %ecx
+; AVX12-NEXT:    andl $1, %ecx
+; AVX12-NEXT:    shll $6, %ecx
+; AVX12-NEXT:    vpextrb $7, %xmm0, %edx
+; AVX12-NEXT:    andl $1, %edx
+; AVX12-NEXT:    shll $7, %edx
+; AVX12-NEXT:    orl %ecx, %edx
+; AVX12-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX12-NEXT:    andl $1, %ecx
+; AVX12-NEXT:    shll $8, %ecx
+; AVX12-NEXT:    orl %edx, %ecx
+; AVX12-NEXT:    vpextrb $9, %xmm0, %edx
+; AVX12-NEXT:    andl $1, %edx
+; AVX12-NEXT:    shll $9, %edx
+; AVX12-NEXT:    orl %ecx, %edx
+; AVX12-NEXT:    vpextrb $10, %xmm0, %ecx
+; AVX12-NEXT:    andl $1, %ecx
+; AVX12-NEXT:    shll $10, %ecx
+; AVX12-NEXT:    orl %edx, %ecx
+; AVX12-NEXT:    vpextrb $11, %xmm0, %edx
+; AVX12-NEXT:    andl $1, %edx
+; AVX12-NEXT:    shll $11, %edx
+; AVX12-NEXT:    orl %ecx, %edx
+; AVX12-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX12-NEXT:    andl $1, %ecx
+; AVX12-NEXT:    shll $12, %ecx
+; AVX12-NEXT:    orl %edx, %ecx
+; AVX12-NEXT:    vpextrb $13, %xmm0, %edx
+; AVX12-NEXT:    andl $1, %edx
+; AVX12-NEXT:    shll $13, %edx
+; AVX12-NEXT:    orl %ecx, %edx
+; AVX12-NEXT:    vpextrb $14, %xmm0, %ecx
+; AVX12-NEXT:    andl $1, %ecx
+; AVX12-NEXT:    shll $14, %ecx
+; AVX12-NEXT:    orl %edx, %ecx
+; AVX12-NEXT:    vpextrb $15, %xmm0, %edx
+; AVX12-NEXT:    shll $15, %edx
+; AVX12-NEXT:    orl %ecx, %edx
+; AVX12-NEXT:    orl %eax, %edx
+; AVX12-NEXT:    vmovd %edx, %xmm0
+; AVX12-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX12-NEXT:    vpextrb $1, %xmm0, %eax
+; AVX12-NEXT:    addb %cl, %al
+; AVX12-NEXT:    # kill: def $al killed $al killed $eax
+; AVX12-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v16i8_to_v2i8:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vpmovb2m %xmm0, %k0
+; AVX512-NEXT:    kmovw %k0, -{{[0-9]+}}(%rsp)
+; AVX512-NEXT:    vmovd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; AVX512-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX512-NEXT:    vpextrb $1, %xmm0, %eax
+; AVX512-NEXT:    addb %cl, %al
+; AVX512-NEXT:    # kill: def $al killed $al killed $eax
+; AVX512-NEXT:    retq
+  %1 = icmp slt <16 x i8> %a0, zeroinitializer
+  %2 = bitcast <16 x i1> %1 to <2 x i8>
+  %3 = extractelement <2 x i8> %2, i32 0
+  %4 = extractelement <2 x i8> %2, i32 1
+  %5 = add i8 %3, %4
+  ret i8 %5
+}
+
+;
+; 256-bit vectors
+;
+
+define i2 @bitcast_v4i64_to_v2i2(<4 x i64> %a0) nounwind {
+; SSE2-SSSE3-LABEL: bitcast_v4i64_to_v2i2:
+; SSE2-SSSE3:       # %bb.0:
+; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm2 = [2147483648,2147483648]
+; SSE2-SSSE3-NEXT:    pxor %xmm2, %xmm1
+; SSE2-SSSE3-NEXT:    movdqa %xmm2, %xmm3
+; SSE2-SSSE3-NEXT:    pcmpgtd %xmm1, %xmm3
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm4 = xmm3[0,0,2,2]
+; SSE2-SSSE3-NEXT:    pcmpeqd %xmm2, %xmm1
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm5 = xmm1[1,1,3,3]
+; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm5
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm3[1,1,3,3]
+; SSE2-SSSE3-NEXT:    por %xmm5, %xmm1
+; SSE2-SSSE3-NEXT:    pxor %xmm2, %xmm0
+; SSE2-SSSE3-NEXT:    movdqa %xmm2, %xmm3
+; SSE2-SSSE3-NEXT:    pcmpgtd %xmm0, %xmm3
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm4 = xmm3[0,0,2,2]
+; SSE2-SSSE3-NEXT:    pcmpeqd %xmm2, %xmm0
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
+; SSE2-SSSE3-NEXT:    pand %xmm4, %xmm0
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[1,1,3,3]
+; SSE2-SSSE3-NEXT:    por %xmm0, %xmm2
+; SSE2-SSSE3-NEXT:    movdqa %xmm2, %xmm0
+; SSE2-SSSE3-NEXT:    shufps {{.*#+}} xmm0 = xmm0[2,2],xmm1[0,2]
+; SSE2-SSSE3-NEXT:    movd %xmm0, %eax
+; SSE2-SSSE3-NEXT:    andb $1, %al
+; SSE2-SSSE3-NEXT:    addb %al, %al
+; SSE2-SSSE3-NEXT:    movd %xmm2, %ecx
+; SSE2-SSSE3-NEXT:    andb $1, %cl
+; SSE2-SSSE3-NEXT:    orb %al, %cl
+; SSE2-SSSE3-NEXT:    movd %xmm1, %eax
+; SSE2-SSSE3-NEXT:    andb $1, %al
+; SSE2-SSSE3-NEXT:    shlb $2, %al
+; SSE2-SSSE3-NEXT:    orb %cl, %al
+; SSE2-SSSE3-NEXT:    shufps {{.*#+}} xmm2 = xmm2[0,2],xmm1[0,2]
+; SSE2-SSSE3-NEXT:    shufps {{.*#+}} xmm2 = xmm2[3,1,2,3]
+; SSE2-SSSE3-NEXT:    movd %xmm2, %ecx
+; SSE2-SSSE3-NEXT:    shlb $3, %cl
+; SSE2-SSSE3-NEXT:    orb %al, %cl
+; SSE2-SSSE3-NEXT:    andb $15, %cl
+; SSE2-SSSE3-NEXT:    movzbl %cl, %eax
+; SSE2-SSSE3-NEXT:    movl %eax, %ecx
+; SSE2-SSSE3-NEXT:    shrl $2, %ecx
+; SSE2-SSSE3-NEXT:    movq %rcx, %xmm0
+; SSE2-SSSE3-NEXT:    andl $3, %eax
+; SSE2-SSSE3-NEXT:    movq %rax, %xmm1
+; SSE2-SSSE3-NEXT:    punpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm0[0]
+; SSE2-SSSE3-NEXT:    movdqa %xmm1, -{{[0-9]+}}(%rsp)
+; SSE2-SSSE3-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    retq
+;
+; AVX1-LABEL: bitcast_v4i64_to_v2i2:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
+; AVX1-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; AVX1-NEXT:    vpcmpgtq %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vpcmpgtq %xmm0, %xmm2, %xmm0
+; AVX1-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vmovd %xmm0, %eax
+; AVX1-NEXT:    andb $1, %al
+; AVX1-NEXT:    vpextrd $1, %xmm0, %ecx
+; AVX1-NEXT:    andb $1, %cl
+; AVX1-NEXT:    addb %cl, %cl
+; AVX1-NEXT:    orb %al, %cl
+; AVX1-NEXT:    vpextrd $2, %xmm0, %eax
+; AVX1-NEXT:    andb $1, %al
+; AVX1-NEXT:    shlb $2, %al
+; AVX1-NEXT:    orb %cl, %al
+; AVX1-NEXT:    vpextrd $3, %xmm0, %ecx
+; AVX1-NEXT:    shlb $3, %cl
+; AVX1-NEXT:    orb %al, %cl
+; AVX1-NEXT:    andb $15, %cl
+; AVX1-NEXT:    movzbl %cl, %eax
+; AVX1-NEXT:    movl %eax, %ecx
+; AVX1-NEXT:    shrl $2, %ecx
+; AVX1-NEXT:    vmovd %ecx, %xmm0
+; AVX1-NEXT:    andl $3, %eax
+; AVX1-NEXT:    vmovd %eax, %xmm1
+; AVX1-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX1-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX1-NEXT:    addb %cl, %al
+; AVX1-NEXT:    # kill: def $al killed $al killed $eax
+; AVX1-NEXT:    vzeroupper
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: bitcast_v4i64_to_v2i2:
+; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX2-NEXT:    vpcmpgtq %ymm0, %ymm1, %ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
+; AVX2-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vmovd %xmm0, %eax
+; AVX2-NEXT:    andb $1, %al
+; AVX2-NEXT:    vpextrd $1, %xmm0, %ecx
+; AVX2-NEXT:    andb $1, %cl
+; AVX2-NEXT:    addb %cl, %cl
+; AVX2-NEXT:    orb %al, %cl
+; AVX2-NEXT:    vpextrd $2, %xmm0, %eax
+; AVX2-NEXT:    andb $1, %al
+; AVX2-NEXT:    shlb $2, %al
+; AVX2-NEXT:    orb %cl, %al
+; AVX2-NEXT:    vpextrd $3, %xmm0, %ecx
+; AVX2-NEXT:    shlb $3, %cl
+; AVX2-NEXT:    orb %al, %cl
+; AVX2-NEXT:    andb $15, %cl
+; AVX2-NEXT:    movzbl %cl, %eax
+; AVX2-NEXT:    movl %eax, %ecx
+; AVX2-NEXT:    shrl $2, %ecx
+; AVX2-NEXT:    vmovd %ecx, %xmm0
+; AVX2-NEXT:    andl $3, %eax
+; AVX2-NEXT:    vmovd %eax, %xmm1
+; AVX2-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX2-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX2-NEXT:    addb %cl, %al
+; AVX2-NEXT:    # kill: def $al killed $al killed $eax
+; AVX2-NEXT:    vzeroupper
+; AVX2-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v4i64_to_v2i2:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX512-NEXT:    vpcmpgtq %ymm0, %ymm1, %k0
+; AVX512-NEXT:    kmovd %k0, %eax
+; AVX512-NEXT:    movzbl %al, %ecx
+; AVX512-NEXT:    shrl $2, %ecx
+; AVX512-NEXT:    andl $3, %ecx
+; AVX512-NEXT:    vmovd %ecx, %xmm0
+; AVX512-NEXT:    andl $3, %eax
+; AVX512-NEXT:    vmovd %eax, %xmm1
+; AVX512-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX512-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX512-NEXT:    addb %cl, %al
+; AVX512-NEXT:    # kill: def $al killed $al killed $eax
+; AVX512-NEXT:    vzeroupper
+; AVX512-NEXT:    retq
+  %1 = icmp slt <4 x i64> %a0, zeroinitializer
+  %2 = bitcast <4 x i1> %1 to <2 x i2>
+  %3 = extractelement <2 x i2> %2, i32 0
+  %4 = extractelement <2 x i2> %2, i32 1
+  %5 = add i2 %3, %4
+  ret i2 %5
+}
+
+define i4 @bitcast_v8i32_to_v2i4(<8 x i32> %a0) nounwind {
+; SSE2-SSSE3-LABEL: bitcast_v8i32_to_v2i4:
+; SSE2-SSSE3:       # %bb.0:
+; SSE2-SSSE3-NEXT:    pxor %xmm2, %xmm2
+; SSE2-SSSE3-NEXT:    pxor %xmm3, %xmm3
+; SSE2-SSSE3-NEXT:    pcmpgtd %xmm0, %xmm3
+; SSE2-SSSE3-NEXT:    pextrw $0, %xmm3, %ecx
+; SSE2-SSSE3-NEXT:    pextrw $2, %xmm3, %eax
+; SSE2-SSSE3-NEXT:    andb $1, %al
+; SSE2-SSSE3-NEXT:    addb %al, %al
+; SSE2-SSSE3-NEXT:    subb %cl, %al
+; SSE2-SSSE3-NEXT:    pextrw $4, %xmm3, %ecx
+; SSE2-SSSE3-NEXT:    andb $1, %cl
+; SSE2-SSSE3-NEXT:    shlb $2, %cl
+; SSE2-SSSE3-NEXT:    pextrw $6, %xmm3, %edx
+; SSE2-SSSE3-NEXT:    andb $1, %dl
+; SSE2-SSSE3-NEXT:    shlb $3, %dl
+; SSE2-SSSE3-NEXT:    orb %cl, %dl
+; SSE2-SSSE3-NEXT:    pcmpgtd %xmm1, %xmm2
+; SSE2-SSSE3-NEXT:    pextrw $0, %xmm2, %ecx
+; SSE2-SSSE3-NEXT:    andb $1, %cl
+; SSE2-SSSE3-NEXT:    shlb $4, %cl
+; SSE2-SSSE3-NEXT:    orb %dl, %cl
+; SSE2-SSSE3-NEXT:    pextrw $2, %xmm2, %edx
+; SSE2-SSSE3-NEXT:    andb $1, %dl
+; SSE2-SSSE3-NEXT:    shlb $5, %dl
+; SSE2-SSSE3-NEXT:    orb %cl, %dl
+; SSE2-SSSE3-NEXT:    pextrw $4, %xmm2, %ecx
+; SSE2-SSSE3-NEXT:    andb $1, %cl
+; SSE2-SSSE3-NEXT:    shlb $6, %cl
+; SSE2-SSSE3-NEXT:    orb %dl, %cl
+; SSE2-SSSE3-NEXT:    pextrw $6, %xmm2, %edx
+; SSE2-SSSE3-NEXT:    shlb $7, %dl
+; SSE2-SSSE3-NEXT:    orb %cl, %dl
+; SSE2-SSSE3-NEXT:    orb %al, %dl
+; SSE2-SSSE3-NEXT:    movzbl %dl, %eax
+; SSE2-SSSE3-NEXT:    movq %rax, %rcx
+; SSE2-SSSE3-NEXT:    shrq $4, %rcx
+; SSE2-SSSE3-NEXT:    movq %rcx, %xmm0
+; SSE2-SSSE3-NEXT:    andl $15, %eax
+; SSE2-SSSE3-NEXT:    movq %rax, %xmm1
+; SSE2-SSSE3-NEXT:    punpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm0[0]
+; SSE2-SSSE3-NEXT:    movdqa %xmm1, -{{[0-9]+}}(%rsp)
+; SSE2-SSSE3-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    retq
+;
+; AVX1-LABEL: bitcast_v8i32_to_v2i4:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX1-NEXT:    vpcmpgtd %xmm0, %xmm1, %xmm2
+; AVX1-NEXT:    vpextrw $0, %xmm2, %ecx
+; AVX1-NEXT:    vpextrw $2, %xmm2, %eax
+; AVX1-NEXT:    andb $1, %al
+; AVX1-NEXT:    addb %al, %al
+; AVX1-NEXT:    subb %cl, %al
+; AVX1-NEXT:    vpextrw $4, %xmm2, %ecx
+; AVX1-NEXT:    andb $1, %cl
+; AVX1-NEXT:    shlb $2, %cl
+; AVX1-NEXT:    vpextrw $6, %xmm2, %edx
+; AVX1-NEXT:    andb $1, %dl
+; AVX1-NEXT:    shlb $3, %dl
+; AVX1-NEXT:    orb %cl, %dl
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
+; AVX1-NEXT:    vpcmpgtd %xmm0, %xmm1, %xmm0
+; AVX1-NEXT:    vpextrw $0, %xmm0, %ecx
+; AVX1-NEXT:    andb $1, %cl
+; AVX1-NEXT:    shlb $4, %cl
+; AVX1-NEXT:    orb %dl, %cl
+; AVX1-NEXT:    vpextrw $2, %xmm0, %edx
+; AVX1-NEXT:    andb $1, %dl
+; AVX1-NEXT:    shlb $5, %dl
+; AVX1-NEXT:    orb %cl, %dl
+; AVX1-NEXT:    vpextrw $4, %xmm0, %ecx
+; AVX1-NEXT:    andb $1, %cl
+; AVX1-NEXT:    shlb $6, %cl
+; AVX1-NEXT:    orb %dl, %cl
+; AVX1-NEXT:    vpextrw $6, %xmm0, %edx
+; AVX1-NEXT:    shlb $7, %dl
+; AVX1-NEXT:    orb %cl, %dl
+; AVX1-NEXT:    orb %al, %dl
+; AVX1-NEXT:    movzbl %dl, %eax
+; AVX1-NEXT:    movl %eax, %ecx
+; AVX1-NEXT:    shrl $4, %ecx
+; AVX1-NEXT:    vmovd %ecx, %xmm0
+; AVX1-NEXT:    andl $15, %eax
+; AVX1-NEXT:    vmovd %eax, %xmm1
+; AVX1-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX1-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX1-NEXT:    addb %cl, %al
+; AVX1-NEXT:    # kill: def $al killed $al killed $eax
+; AVX1-NEXT:    vzeroupper
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: bitcast_v8i32_to_v2i4:
+; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX2-NEXT:    vpcmpgtd %ymm0, %ymm1, %ymm0
+; AVX2-NEXT:    vpextrw $0, %xmm0, %ecx
+; AVX2-NEXT:    vpextrw $2, %xmm0, %eax
+; AVX2-NEXT:    andb $1, %al
+; AVX2-NEXT:    addb %al, %al
+; AVX2-NEXT:    subb %cl, %al
+; AVX2-NEXT:    vpextrw $4, %xmm0, %ecx
+; AVX2-NEXT:    andb $1, %cl
+; AVX2-NEXT:    shlb $2, %cl
+; AVX2-NEXT:    vpextrw $6, %xmm0, %edx
+; AVX2-NEXT:    andb $1, %dl
+; AVX2-NEXT:    shlb $3, %dl
+; AVX2-NEXT:    orb %cl, %dl
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm0
+; AVX2-NEXT:    vpextrw $0, %xmm0, %ecx
+; AVX2-NEXT:    andb $1, %cl
+; AVX2-NEXT:    shlb $4, %cl
+; AVX2-NEXT:    orb %dl, %cl
+; AVX2-NEXT:    vpextrw $2, %xmm0, %edx
+; AVX2-NEXT:    andb $1, %dl
+; AVX2-NEXT:    shlb $5, %dl
+; AVX2-NEXT:    orb %cl, %dl
+; AVX2-NEXT:    vpextrw $4, %xmm0, %ecx
+; AVX2-NEXT:    andb $1, %cl
+; AVX2-NEXT:    shlb $6, %cl
+; AVX2-NEXT:    orb %dl, %cl
+; AVX2-NEXT:    vpextrw $6, %xmm0, %edx
+; AVX2-NEXT:    shlb $7, %dl
+; AVX2-NEXT:    orb %cl, %dl
+; AVX2-NEXT:    orb %al, %dl
+; AVX2-NEXT:    movzbl %dl, %eax
+; AVX2-NEXT:    movl %eax, %ecx
+; AVX2-NEXT:    shrl $4, %ecx
+; AVX2-NEXT:    vmovd %ecx, %xmm0
+; AVX2-NEXT:    andl $15, %eax
+; AVX2-NEXT:    vmovd %eax, %xmm1
+; AVX2-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX2-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX2-NEXT:    addb %cl, %al
+; AVX2-NEXT:    # kill: def $al killed $al killed $eax
+; AVX2-NEXT:    vzeroupper
+; AVX2-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v8i32_to_v2i4:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX512-NEXT:    vpcmpgtd %ymm0, %ymm1, %k0
+; AVX512-NEXT:    kmovd %k0, %eax
+; AVX512-NEXT:    movzbl %al, %ecx
+; AVX512-NEXT:    shrl $4, %ecx
+; AVX512-NEXT:    vmovd %ecx, %xmm0
+; AVX512-NEXT:    andl $15, %eax
+; AVX512-NEXT:    vmovd %eax, %xmm1
+; AVX512-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX512-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX512-NEXT:    addb %cl, %al
+; AVX512-NEXT:    # kill: def $al killed $al killed $eax
+; AVX512-NEXT:    vzeroupper
+; AVX512-NEXT:    retq
+  %1 = icmp slt <8 x i32> %a0, zeroinitializer
+  %2 = bitcast <8 x i1> %1 to <2 x i4>
+  %3 = extractelement <2 x i4> %2, i32 0
+  %4 = extractelement <2 x i4> %2, i32 1
+  %5 = add i4 %3, %4
+  ret i4 %5
+}
+
+define i8 @bitcast_v16i16_to_v2i8(<16 x i16> %a0) nounwind {
+; SSE2-LABEL: bitcast_v16i16_to_v2i8:
+; SSE2:       # %bb.0:
+; SSE2-NEXT:    pxor %xmm2, %xmm2
+; SSE2-NEXT:    pxor %xmm3, %xmm3
+; SSE2-NEXT:    pcmpgtw %xmm1, %xmm3
+; SSE2-NEXT:    pcmpgtw %xmm0, %xmm2
+; SSE2-NEXT:    packsswb %xmm3, %xmm2
+; SSE2-NEXT:    movdqa %xmm2, -{{[0-9]+}}(%rsp)
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSE2-NEXT:    andl $1, %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    leal (%rcx,%rax,2), %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    leal (%rax,%rcx,4), %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    leal (%rax,%rcx,8), %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $4, %ecx
+; SSE2-NEXT:    orl %eax, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSE2-NEXT:    andl $1, %eax
+; SSE2-NEXT:    shll $5, %eax
+; SSE2-NEXT:    orl %ecx, %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $6, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $7, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $8, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $9, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $10, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $11, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $12, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $13, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $14, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    shll $15, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    orl %eax, %edx
+; SSE2-NEXT:    movd %edx, %xmm0
+; SSE2-NEXT:    punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
+; SSE2-NEXT:    punpcklwd {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[0,1,1,3]
+; SSE2-NEXT:    movdqa %xmm0, -{{[0-9]+}}(%rsp)
+; SSE2-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSE2-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSE2-NEXT:    retq
+;
+; SSSE3-LABEL: bitcast_v16i16_to_v2i8:
+; SSSE3:       # %bb.0:
+; SSSE3-NEXT:    pxor %xmm2, %xmm2
+; SSSE3-NEXT:    pxor %xmm3, %xmm3
+; SSSE3-NEXT:    pcmpgtw %xmm1, %xmm3
+; SSSE3-NEXT:    pcmpgtw %xmm0, %xmm2
+; SSSE3-NEXT:    packsswb %xmm3, %xmm2
+; SSSE3-NEXT:    movdqa %xmm2, -{{[0-9]+}}(%rsp)
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSSE3-NEXT:    andl $1, %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    leal (%rcx,%rax,2), %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    leal (%rax,%rcx,4), %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    leal (%rax,%rcx,8), %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $4, %ecx
+; SSSE3-NEXT:    orl %eax, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSSE3-NEXT:    andl $1, %eax
+; SSSE3-NEXT:    shll $5, %eax
+; SSSE3-NEXT:    orl %ecx, %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $6, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $7, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $8, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $9, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $10, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $11, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $12, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $13, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $14, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    shll $15, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    orl %eax, %edx
+; SSSE3-NEXT:    movd %edx, %xmm0
+; SSSE3-NEXT:    pshufb {{.*#+}} xmm0 = xmm0[0],zero,zero,zero,zero,zero,zero,zero,xmm0[1],zero,zero,zero,zero,zero,zero,zero
+; SSSE3-NEXT:    movdqa %xmm0, -{{[0-9]+}}(%rsp)
+; SSSE3-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSSE3-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSSE3-NEXT:    retq
+;
+; AVX1-LABEL: bitcast_v16i16_to_v2i8:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX1-NEXT:    vpcmpgtw %xmm0, %xmm1, %xmm2
+; AVX1-NEXT:    vpextrb $2, %xmm2, %eax
+; AVX1-NEXT:    andl $1, %eax
+; AVX1-NEXT:    vpextrb $0, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rcx,%rax,2), %eax
+; AVX1-NEXT:    vpextrb $4, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rax,%rcx,4), %eax
+; AVX1-NEXT:    vpextrb $6, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rax,%rcx,8), %eax
+; AVX1-NEXT:    vpextrb $8, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $4, %ecx
+; AVX1-NEXT:    orl %eax, %ecx
+; AVX1-NEXT:    vpextrb $10, %xmm2, %eax
+; AVX1-NEXT:    andl $1, %eax
+; AVX1-NEXT:    shll $5, %eax
+; AVX1-NEXT:    orl %ecx, %eax
+; AVX1-NEXT:    vpextrb $12, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $6, %ecx
+; AVX1-NEXT:    vpextrb $14, %xmm2, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $7, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
+; AVX1-NEXT:    vpcmpgtw %xmm0, %xmm1, %xmm0
+; AVX1-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $8, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $2, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $9, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $10, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $6, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $11, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $12, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $10, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $13, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $14, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $14, %xmm0, %edx
+; AVX1-NEXT:    shll $15, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    orl %eax, %edx
+; AVX1-NEXT:    vmovd %edx, %xmm0
+; AVX1-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX1-NEXT:    vpextrb $1, %xmm0, %eax
+; AVX1-NEXT:    addb %cl, %al
+; AVX1-NEXT:    # kill: def $al killed $al killed $eax
+; AVX1-NEXT:    vzeroupper
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: bitcast_v16i16_to_v2i8:
+; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX2-NEXT:    vpcmpgtw %ymm0, %ymm1, %ymm0
+; AVX2-NEXT:    vpextrb $2, %xmm0, %eax
+; AVX2-NEXT:    andl $1, %eax
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rcx,%rax,2), %eax
+; AVX2-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rax,%rcx,4), %eax
+; AVX2-NEXT:    vpextrb $6, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rax,%rcx,8), %eax
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $4, %ecx
+; AVX2-NEXT:    orl %eax, %ecx
+; AVX2-NEXT:    vpextrb $10, %xmm0, %eax
+; AVX2-NEXT:    andl $1, %eax
+; AVX2-NEXT:    shll $5, %eax
+; AVX2-NEXT:    orl %ecx, %eax
+; AVX2-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $6, %ecx
+; AVX2-NEXT:    vpextrb $14, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $7, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm0
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $8, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $2, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $9, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $10, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $6, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $11, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $12, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $10, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $13, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $14, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $14, %xmm0, %edx
+; AVX2-NEXT:    shll $15, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    orl %eax, %edx
+; AVX2-NEXT:    vmovd %edx, %xmm0
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    vpextrb $1, %xmm0, %eax
+; AVX2-NEXT:    addb %cl, %al
+; AVX2-NEXT:    # kill: def $al killed $al killed $eax
+; AVX2-NEXT:    vzeroupper
+; AVX2-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v16i16_to_v2i8:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vpmovw2m %ymm0, %k0
+; AVX512-NEXT:    kmovw %k0, -{{[0-9]+}}(%rsp)
+; AVX512-NEXT:    vmovd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; AVX512-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX512-NEXT:    vpextrb $1, %xmm0, %eax
+; AVX512-NEXT:    addb %cl, %al
+; AVX512-NEXT:    # kill: def $al killed $al killed $eax
+; AVX512-NEXT:    vzeroupper
+; AVX512-NEXT:    retq
+  %1 = icmp slt <16 x i16> %a0, zeroinitializer
+  %2 = bitcast <16 x i1> %1 to <2 x i8>
+  %3 = extractelement <2 x i8> %2, i32 0
+  %4 = extractelement <2 x i8> %2, i32 1
+  %5 = add i8 %3, %4
+  ret i8 %5
+}
+
+define i16 @bitcast_v32i8_to_v2i16(<32 x i8> %a0) nounwind {
+; SSE2-SSSE3-LABEL: bitcast_v32i8_to_v2i16:
+; SSE2-SSSE3:       # %bb.0:
+; SSE2-SSSE3-NEXT:    retq
+;
+; AVX1-LABEL: bitcast_v32i8_to_v2i16:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    pushq %rbp
+; AVX1-NEXT:    movq %rsp, %rbp
+; AVX1-NEXT:    andq $-32, %rsp
+; AVX1-NEXT:    subq $32, %rsp
+; AVX1-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX1-NEXT:    vpcmpgtb %xmm0, %xmm1, %xmm2
+; AVX1-NEXT:    vpextrb $1, %xmm2, %eax
+; AVX1-NEXT:    andl $1, %eax
+; AVX1-NEXT:    vpextrb $0, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rcx,%rax,2), %eax
+; AVX1-NEXT:    vpextrb $2, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rax,%rcx,4), %eax
+; AVX1-NEXT:    vpextrb $3, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rax,%rcx,8), %eax
+; AVX1-NEXT:    vpextrb $4, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $4, %ecx
+; AVX1-NEXT:    orl %eax, %ecx
+; AVX1-NEXT:    vpextrb $5, %xmm2, %eax
+; AVX1-NEXT:    andl $1, %eax
+; AVX1-NEXT:    shll $5, %eax
+; AVX1-NEXT:    orl %ecx, %eax
+; AVX1-NEXT:    vpextrb $6, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $6, %ecx
+; AVX1-NEXT:    vpextrb $7, %xmm2, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $7, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $8, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $8, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $9, %xmm2, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $9, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $10, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $10, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $11, %xmm2, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $11, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $12, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $12, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $13, %xmm2, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $13, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $14, %xmm2, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $14, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $15, %xmm2, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $15, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
+; AVX1-NEXT:    vpcmpgtb %xmm0, %xmm1, %xmm0
+; AVX1-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $16, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $1, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $17, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $2, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $18, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $3, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $19, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $20, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $5, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $21, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $6, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $22, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $7, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $23, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $24, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $9, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $25, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $10, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $26, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $11, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $27, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $28, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $13, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $29, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $14, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $30, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $15, %xmm0, %edx
+; AVX1-NEXT:    shll $31, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    orl %eax, %edx
+; AVX1-NEXT:    vmovd %edx, %xmm0
+; AVX1-NEXT:    vpextrw $0, %xmm0, %ecx
+; AVX1-NEXT:    vpextrw $1, %xmm0, %eax
+; AVX1-NEXT:    addl %ecx, %eax
+; AVX1-NEXT:    # kill: def $ax killed $ax killed $eax
+; AVX1-NEXT:    movq %rbp, %rsp
+; AVX1-NEXT:    popq %rbp
+; AVX1-NEXT:    vzeroupper
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: bitcast_v32i8_to_v2i16:
+; AVX2:       # %bb.0:
+; AVX2-NEXT:    pushq %rbp
+; AVX2-NEXT:    movq %rsp, %rbp
+; AVX2-NEXT:    andq $-32, %rsp
+; AVX2-NEXT:    subq $32, %rsp
+; AVX2-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX2-NEXT:    vpcmpgtb %ymm0, %ymm1, %ymm0
+; AVX2-NEXT:    vpextrb $1, %xmm0, %eax
+; AVX2-NEXT:    andl $1, %eax
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rcx,%rax,2), %eax
+; AVX2-NEXT:    vpextrb $2, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rax,%rcx,4), %eax
+; AVX2-NEXT:    vpextrb $3, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rax,%rcx,8), %eax
+; AVX2-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $4, %ecx
+; AVX2-NEXT:    orl %eax, %ecx
+; AVX2-NEXT:    vpextrb $5, %xmm0, %eax
+; AVX2-NEXT:    andl $1, %eax
+; AVX2-NEXT:    shll $5, %eax
+; AVX2-NEXT:    orl %ecx, %eax
+; AVX2-NEXT:    vpextrb $6, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $6, %ecx
+; AVX2-NEXT:    vpextrb $7, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $7, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $8, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $9, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $9, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $10, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $10, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $11, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $11, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $12, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $13, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $13, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $14, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $14, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $15, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $15, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm0
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $16, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $1, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $17, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $2, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $18, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $3, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $19, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $20, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $5, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $21, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $6, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $22, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $7, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $23, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $24, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $9, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $25, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $10, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $26, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $11, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $27, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $28, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $13, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $29, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $14, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $30, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $15, %xmm0, %edx
+; AVX2-NEXT:    shll $31, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    orl %eax, %edx
+; AVX2-NEXT:    vmovd %edx, %xmm0
+; AVX2-NEXT:    vpextrw $0, %xmm0, %ecx
+; AVX2-NEXT:    vpextrw $1, %xmm0, %eax
+; AVX2-NEXT:    addl %ecx, %eax
+; AVX2-NEXT:    # kill: def $ax killed $ax killed $eax
+; AVX2-NEXT:    movq %rbp, %rsp
+; AVX2-NEXT:    popq %rbp
+; AVX2-NEXT:    vzeroupper
+; AVX2-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v32i8_to_v2i16:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    pushq %rbp
+; AVX512-NEXT:    movq %rsp, %rbp
+; AVX512-NEXT:    andq $-32, %rsp
+; AVX512-NEXT:    subq $32, %rsp
+; AVX512-NEXT:    vpmovb2m %ymm0, %k0
+; AVX512-NEXT:    kmovd %k0, (%rsp)
+; AVX512-NEXT:    vmovd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; AVX512-NEXT:    vpextrw $0, %xmm0, %ecx
+; AVX512-NEXT:    vpextrw $1, %xmm0, %eax
+; AVX512-NEXT:    addl %ecx, %eax
+; AVX512-NEXT:    # kill: def $ax killed $ax killed $eax
+; AVX512-NEXT:    movq %rbp, %rsp
+; AVX512-NEXT:    popq %rbp
+; AVX512-NEXT:    vzeroupper
+; AVX512-NEXT:    retq
+  %1 = icmp slt <32 x i8> %a0, zeroinitializer
+  %2 = bitcast <32 x i1> %1 to <2 x i16>
+  %3 = extractelement <2 x i16> %2, i32 0
+  %4 = extractelement <2 x i16> %2, i32 1
+  %5 = add i16 %3, %4
+  ret i16 %5
+}
+
+;
+; 512-bit vectors
+;
+
+define i4 @bitcast_v8i64_to_v2i4(<8 x i64> %a0) nounwind {
+; SSE2-SSSE3-LABEL: bitcast_v8i64_to_v2i4:
+; SSE2-SSSE3:       # %bb.0:
+; SSE2-SSSE3-NEXT:    movdqa {{.*#+}} xmm4 = [2147483648,2147483648]
+; SSE2-SSSE3-NEXT:    pxor %xmm4, %xmm0
+; SSE2-SSSE3-NEXT:    movdqa %xmm4, %xmm5
+; SSE2-SSSE3-NEXT:    pcmpgtd %xmm0, %xmm5
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm6 = xmm5[0,0,2,2]
+; SSE2-SSSE3-NEXT:    pcmpeqd %xmm4, %xmm0
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
+; SSE2-SSSE3-NEXT:    pand %xmm6, %xmm0
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm5 = xmm5[1,1,3,3]
+; SSE2-SSSE3-NEXT:    por %xmm0, %xmm5
+; SSE2-SSSE3-NEXT:    pextrw $0, %xmm5, %eax
+; SSE2-SSSE3-NEXT:    andb $1, %al
+; SSE2-SSSE3-NEXT:    pextrw $4, %xmm5, %ecx
+; SSE2-SSSE3-NEXT:    andb $1, %cl
+; SSE2-SSSE3-NEXT:    addb %cl, %cl
+; SSE2-SSSE3-NEXT:    orb %al, %cl
+; SSE2-SSSE3-NEXT:    pxor %xmm4, %xmm1
+; SSE2-SSSE3-NEXT:    movdqa %xmm4, %xmm0
+; SSE2-SSSE3-NEXT:    pcmpgtd %xmm1, %xmm0
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm5 = xmm0[0,0,2,2]
+; SSE2-SSSE3-NEXT:    pcmpeqd %xmm4, %xmm1
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
+; SSE2-SSSE3-NEXT:    pand %xmm5, %xmm1
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
+; SSE2-SSSE3-NEXT:    por %xmm1, %xmm0
+; SSE2-SSSE3-NEXT:    pextrw $0, %xmm0, %eax
+; SSE2-SSSE3-NEXT:    andb $1, %al
+; SSE2-SSSE3-NEXT:    shlb $2, %al
+; SSE2-SSSE3-NEXT:    orb %cl, %al
+; SSE2-SSSE3-NEXT:    pextrw $4, %xmm0, %ecx
+; SSE2-SSSE3-NEXT:    andb $1, %cl
+; SSE2-SSSE3-NEXT:    shlb $3, %cl
+; SSE2-SSSE3-NEXT:    orb %al, %cl
+; SSE2-SSSE3-NEXT:    pxor %xmm4, %xmm2
+; SSE2-SSSE3-NEXT:    movdqa %xmm4, %xmm0
+; SSE2-SSSE3-NEXT:    pcmpgtd %xmm2, %xmm0
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm0[0,0,2,2]
+; SSE2-SSSE3-NEXT:    pcmpeqd %xmm4, %xmm2
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm2 = xmm2[1,1,3,3]
+; SSE2-SSSE3-NEXT:    pand %xmm1, %xmm2
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
+; SSE2-SSSE3-NEXT:    por %xmm2, %xmm0
+; SSE2-SSSE3-NEXT:    pextrw $0, %xmm0, %edx
+; SSE2-SSSE3-NEXT:    andb $1, %dl
+; SSE2-SSSE3-NEXT:    shlb $4, %dl
+; SSE2-SSSE3-NEXT:    orb %cl, %dl
+; SSE2-SSSE3-NEXT:    pextrw $4, %xmm0, %eax
+; SSE2-SSSE3-NEXT:    andb $1, %al
+; SSE2-SSSE3-NEXT:    shlb $5, %al
+; SSE2-SSSE3-NEXT:    orb %dl, %al
+; SSE2-SSSE3-NEXT:    pxor %xmm4, %xmm3
+; SSE2-SSSE3-NEXT:    movdqa %xmm4, %xmm0
+; SSE2-SSSE3-NEXT:    pcmpgtd %xmm3, %xmm0
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm1 = xmm0[0,0,2,2]
+; SSE2-SSSE3-NEXT:    pcmpeqd %xmm4, %xmm3
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm2 = xmm3[1,1,3,3]
+; SSE2-SSSE3-NEXT:    pand %xmm1, %xmm2
+; SSE2-SSSE3-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
+; SSE2-SSSE3-NEXT:    por %xmm2, %xmm0
+; SSE2-SSSE3-NEXT:    pextrw $0, %xmm0, %ecx
+; SSE2-SSSE3-NEXT:    andb $1, %cl
+; SSE2-SSSE3-NEXT:    shlb $6, %cl
+; SSE2-SSSE3-NEXT:    pextrw $4, %xmm0, %edx
+; SSE2-SSSE3-NEXT:    shlb $7, %dl
+; SSE2-SSSE3-NEXT:    orb %cl, %dl
+; SSE2-SSSE3-NEXT:    orb %al, %dl
+; SSE2-SSSE3-NEXT:    movzbl %dl, %eax
+; SSE2-SSSE3-NEXT:    movq %rax, %rcx
+; SSE2-SSSE3-NEXT:    shrq $4, %rcx
+; SSE2-SSSE3-NEXT:    movq %rcx, %xmm0
+; SSE2-SSSE3-NEXT:    andl $15, %eax
+; SSE2-SSSE3-NEXT:    movq %rax, %xmm1
+; SSE2-SSSE3-NEXT:    punpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm0[0]
+; SSE2-SSSE3-NEXT:    movdqa %xmm1, -{{[0-9]+}}(%rsp)
+; SSE2-SSSE3-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSE2-SSSE3-NEXT:    retq
+;
+; AVX1-LABEL: bitcast_v8i64_to_v2i4:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
+; AVX1-NEXT:    vpxor %xmm3, %xmm3, %xmm3
+; AVX1-NEXT:    vpcmpgtq %xmm2, %xmm3, %xmm2
+; AVX1-NEXT:    vpcmpgtq %xmm1, %xmm3, %xmm1
+; AVX1-NEXT:    vpackssdw %xmm2, %xmm1, %xmm1
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
+; AVX1-NEXT:    vpcmpgtq %xmm2, %xmm3, %xmm2
+; AVX1-NEXT:    vpcmpgtq %xmm0, %xmm3, %xmm0
+; AVX1-NEXT:    vpackssdw %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vmovd %xmm0, %eax
+; AVX1-NEXT:    andb $1, %al
+; AVX1-NEXT:    vpextrw $1, %xmm0, %ecx
+; AVX1-NEXT:    andb $1, %cl
+; AVX1-NEXT:    addb %cl, %cl
+; AVX1-NEXT:    orb %al, %cl
+; AVX1-NEXT:    vpextrw $2, %xmm0, %eax
+; AVX1-NEXT:    andb $1, %al
+; AVX1-NEXT:    shlb $2, %al
+; AVX1-NEXT:    orb %cl, %al
+; AVX1-NEXT:    vpextrw $3, %xmm0, %ecx
+; AVX1-NEXT:    andb $1, %cl
+; AVX1-NEXT:    shlb $3, %cl
+; AVX1-NEXT:    orb %al, %cl
+; AVX1-NEXT:    vpextrw $4, %xmm0, %eax
+; AVX1-NEXT:    andb $1, %al
+; AVX1-NEXT:    shlb $4, %al
+; AVX1-NEXT:    orb %cl, %al
+; AVX1-NEXT:    vpextrw $5, %xmm0, %ecx
+; AVX1-NEXT:    andb $1, %cl
+; AVX1-NEXT:    shlb $5, %cl
+; AVX1-NEXT:    orb %al, %cl
+; AVX1-NEXT:    vpextrw $6, %xmm0, %eax
+; AVX1-NEXT:    andb $1, %al
+; AVX1-NEXT:    shlb $6, %al
+; AVX1-NEXT:    vpextrw $7, %xmm0, %edx
+; AVX1-NEXT:    shlb $7, %dl
+; AVX1-NEXT:    orb %al, %dl
+; AVX1-NEXT:    orb %cl, %dl
+; AVX1-NEXT:    movzbl %dl, %eax
+; AVX1-NEXT:    movl %eax, %ecx
+; AVX1-NEXT:    shrl $4, %ecx
+; AVX1-NEXT:    vmovd %ecx, %xmm0
+; AVX1-NEXT:    andl $15, %eax
+; AVX1-NEXT:    vmovd %eax, %xmm1
+; AVX1-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX1-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX1-NEXT:    addb %cl, %al
+; AVX1-NEXT:    # kill: def $al killed $al killed $eax
+; AVX1-NEXT:    vzeroupper
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: bitcast_v8i64_to_v2i4:
+; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; AVX2-NEXT:    vpcmpgtq %ymm1, %ymm2, %ymm1
+; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm3
+; AVX2-NEXT:    vpackssdw %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vpcmpgtq %ymm0, %ymm2, %ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
+; AVX2-NEXT:    vpackssdw %xmm2, %xmm0, %xmm0
+; AVX2-NEXT:    vpackssdw %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vmovd %xmm0, %eax
+; AVX2-NEXT:    andb $1, %al
+; AVX2-NEXT:    vpextrw $1, %xmm0, %ecx
+; AVX2-NEXT:    andb $1, %cl
+; AVX2-NEXT:    addb %cl, %cl
+; AVX2-NEXT:    orb %al, %cl
+; AVX2-NEXT:    vpextrw $2, %xmm0, %eax
+; AVX2-NEXT:    andb $1, %al
+; AVX2-NEXT:    shlb $2, %al
+; AVX2-NEXT:    orb %cl, %al
+; AVX2-NEXT:    vpextrw $3, %xmm0, %ecx
+; AVX2-NEXT:    andb $1, %cl
+; AVX2-NEXT:    shlb $3, %cl
+; AVX2-NEXT:    orb %al, %cl
+; AVX2-NEXT:    vpextrw $4, %xmm0, %eax
+; AVX2-NEXT:    andb $1, %al
+; AVX2-NEXT:    shlb $4, %al
+; AVX2-NEXT:    orb %cl, %al
+; AVX2-NEXT:    vpextrw $5, %xmm0, %ecx
+; AVX2-NEXT:    andb $1, %cl
+; AVX2-NEXT:    shlb $5, %cl
+; AVX2-NEXT:    orb %al, %cl
+; AVX2-NEXT:    vpextrw $6, %xmm0, %eax
+; AVX2-NEXT:    andb $1, %al
+; AVX2-NEXT:    shlb $6, %al
+; AVX2-NEXT:    vpextrw $7, %xmm0, %edx
+; AVX2-NEXT:    shlb $7, %dl
+; AVX2-NEXT:    orb %al, %dl
+; AVX2-NEXT:    orb %cl, %dl
+; AVX2-NEXT:    movzbl %dl, %eax
+; AVX2-NEXT:    movl %eax, %ecx
+; AVX2-NEXT:    shrl $4, %ecx
+; AVX2-NEXT:    vmovd %ecx, %xmm0
+; AVX2-NEXT:    andl $15, %eax
+; AVX2-NEXT:    vmovd %eax, %xmm1
+; AVX2-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX2-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX2-NEXT:    addb %cl, %al
+; AVX2-NEXT:    # kill: def $al killed $al killed $eax
+; AVX2-NEXT:    vzeroupper
+; AVX2-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v8i64_to_v2i4:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX512-NEXT:    vpcmpgtq %zmm0, %zmm1, %k0
+; AVX512-NEXT:    kmovd %k0, %eax
+; AVX512-NEXT:    movzbl %al, %ecx
+; AVX512-NEXT:    shrl $4, %ecx
+; AVX512-NEXT:    vmovd %ecx, %xmm0
+; AVX512-NEXT:    andl $15, %eax
+; AVX512-NEXT:    vmovd %eax, %xmm1
+; AVX512-NEXT:    vpextrb $0, %xmm1, %ecx
+; AVX512-NEXT:    vpextrb $0, %xmm0, %eax
+; AVX512-NEXT:    addb %cl, %al
+; AVX512-NEXT:    # kill: def $al killed $al killed $eax
+; AVX512-NEXT:    vzeroupper
+; AVX512-NEXT:    retq
+  %1 = icmp slt <8 x i64> %a0, zeroinitializer
+  %2 = bitcast <8 x i1> %1 to <2 x i4>
+  %3 = extractelement <2 x i4> %2, i32 0
+  %4 = extractelement <2 x i4> %2, i32 1
+  %5 = add i4 %3, %4
+  ret i4 %5
+}
+
+define i8 @bitcast_v16i32_to_v2i8(<16 x i32> %a0) nounwind {
+; SSE2-LABEL: bitcast_v16i32_to_v2i8:
+; SSE2:       # %bb.0:
+; SSE2-NEXT:    pxor %xmm4, %xmm4
+; SSE2-NEXT:    pxor %xmm5, %xmm5
+; SSE2-NEXT:    pcmpgtd %xmm3, %xmm5
+; SSE2-NEXT:    movdqa {{.*#+}} xmm3 = [255,255,255,255]
+; SSE2-NEXT:    pand %xmm3, %xmm5
+; SSE2-NEXT:    pxor %xmm6, %xmm6
+; SSE2-NEXT:    pcmpgtd %xmm2, %xmm6
+; SSE2-NEXT:    pand %xmm3, %xmm6
+; SSE2-NEXT:    packuswb %xmm5, %xmm6
+; SSE2-NEXT:    pxor %xmm2, %xmm2
+; SSE2-NEXT:    pcmpgtd %xmm1, %xmm2
+; SSE2-NEXT:    pand %xmm3, %xmm2
+; SSE2-NEXT:    pcmpgtd %xmm0, %xmm4
+; SSE2-NEXT:    pand %xmm3, %xmm4
+; SSE2-NEXT:    packuswb %xmm2, %xmm4
+; SSE2-NEXT:    packuswb %xmm6, %xmm4
+; SSE2-NEXT:    movdqa %xmm4, -{{[0-9]+}}(%rsp)
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSE2-NEXT:    andl $1, %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    leal (%rcx,%rax,2), %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    leal (%rax,%rcx,4), %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    leal (%rax,%rcx,8), %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $4, %ecx
+; SSE2-NEXT:    orl %eax, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSE2-NEXT:    andl $1, %eax
+; SSE2-NEXT:    shll $5, %eax
+; SSE2-NEXT:    orl %ecx, %eax
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $6, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $7, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $8, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $9, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $10, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $11, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $12, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    andl $1, %edx
+; SSE2-NEXT:    shll $13, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSE2-NEXT:    andl $1, %ecx
+; SSE2-NEXT:    shll $14, %ecx
+; SSE2-NEXT:    orl %edx, %ecx
+; SSE2-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSE2-NEXT:    shll $15, %edx
+; SSE2-NEXT:    orl %ecx, %edx
+; SSE2-NEXT:    orl %eax, %edx
+; SSE2-NEXT:    movd %edx, %xmm0
+; SSE2-NEXT:    punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
+; SSE2-NEXT:    punpcklwd {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3]
+; SSE2-NEXT:    pshufd {{.*#+}} xmm0 = xmm0[0,1,1,3]
+; SSE2-NEXT:    movdqa %xmm0, -{{[0-9]+}}(%rsp)
+; SSE2-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSE2-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSE2-NEXT:    retq
+;
+; SSSE3-LABEL: bitcast_v16i32_to_v2i8:
+; SSSE3:       # %bb.0:
+; SSSE3-NEXT:    pxor %xmm4, %xmm4
+; SSSE3-NEXT:    pxor %xmm5, %xmm5
+; SSSE3-NEXT:    pcmpgtd %xmm1, %xmm5
+; SSSE3-NEXT:    movdqa {{.*#+}} xmm1 = <0,4,8,12,u,u,u,u,u,u,u,u,u,u,u,u>
+; SSSE3-NEXT:    pshufb %xmm1, %xmm5
+; SSSE3-NEXT:    pxor %xmm6, %xmm6
+; SSSE3-NEXT:    pcmpgtd %xmm0, %xmm6
+; SSSE3-NEXT:    pshufb %xmm1, %xmm6
+; SSSE3-NEXT:    punpckldq {{.*#+}} xmm6 = xmm6[0],xmm5[0],xmm6[1],xmm5[1]
+; SSSE3-NEXT:    pxor %xmm0, %xmm0
+; SSSE3-NEXT:    pcmpgtd %xmm3, %xmm0
+; SSSE3-NEXT:    movdqa {{.*#+}} xmm1 = <u,u,u,u,0,4,8,12,u,u,u,u,u,u,u,u>
+; SSSE3-NEXT:    pshufb %xmm1, %xmm0
+; SSSE3-NEXT:    pcmpgtd %xmm2, %xmm4
+; SSSE3-NEXT:    pshufb %xmm1, %xmm4
+; SSSE3-NEXT:    punpckldq {{.*#+}} xmm4 = xmm4[0],xmm0[0],xmm4[1],xmm0[1]
+; SSSE3-NEXT:    movsd {{.*#+}} xmm4 = xmm6[0],xmm4[1]
+; SSSE3-NEXT:    movapd %xmm4, -{{[0-9]+}}(%rsp)
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSSE3-NEXT:    andl $1, %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    leal (%rcx,%rax,2), %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    leal (%rax,%rcx,4), %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    leal (%rax,%rcx,8), %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $4, %ecx
+; SSSE3-NEXT:    orl %eax, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
+; SSSE3-NEXT:    andl $1, %eax
+; SSSE3-NEXT:    shll $5, %eax
+; SSSE3-NEXT:    orl %ecx, %eax
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $6, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $7, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $8, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $9, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $10, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $11, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $12, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    andl $1, %edx
+; SSSE3-NEXT:    shll $13, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %ecx
+; SSSE3-NEXT:    andl $1, %ecx
+; SSSE3-NEXT:    shll $14, %ecx
+; SSSE3-NEXT:    orl %edx, %ecx
+; SSSE3-NEXT:    movzbl -{{[0-9]+}}(%rsp), %edx
+; SSSE3-NEXT:    shll $15, %edx
+; SSSE3-NEXT:    orl %ecx, %edx
+; SSSE3-NEXT:    orl %eax, %edx
+; SSSE3-NEXT:    movd %edx, %xmm0
+; SSSE3-NEXT:    pshufb {{.*#+}} xmm0 = xmm0[0],zero,zero,zero,zero,zero,zero,zero,xmm0[1],zero,zero,zero,zero,zero,zero,zero
+; SSSE3-NEXT:    movdqa %xmm0, -{{[0-9]+}}(%rsp)
+; SSSE3-NEXT:    movb -{{[0-9]+}}(%rsp), %al
+; SSSE3-NEXT:    addb -{{[0-9]+}}(%rsp), %al
+; SSSE3-NEXT:    retq
+;
+; AVX1-LABEL: bitcast_v16i32_to_v2i8:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; AVX1-NEXT:    vpcmpgtd %xmm0, %xmm2, %xmm3
+; AVX1-NEXT:    vpextrb $4, %xmm3, %eax
+; AVX1-NEXT:    andl $1, %eax
+; AVX1-NEXT:    vpextrb $0, %xmm3, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rcx,%rax,2), %eax
+; AVX1-NEXT:    vpextrb $8, %xmm3, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rax,%rcx,4), %eax
+; AVX1-NEXT:    vpextrb $12, %xmm3, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rax,%rcx,8), %eax
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
+; AVX1-NEXT:    vpcmpgtd %xmm0, %xmm2, %xmm0
+; AVX1-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $4, %ecx
+; AVX1-NEXT:    orl %eax, %ecx
+; AVX1-NEXT:    vpextrb $4, %xmm0, %eax
+; AVX1-NEXT:    andl $1, %eax
+; AVX1-NEXT:    shll $5, %eax
+; AVX1-NEXT:    orl %ecx, %eax
+; AVX1-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $6, %ecx
+; AVX1-NEXT:    vpextrb $12, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $7, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpcmpgtd %xmm1, %xmm2, %xmm0
+; AVX1-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $8, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $4, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $9, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $10, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $12, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $11, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm0
+; AVX1-NEXT:    vpcmpgtd %xmm0, %xmm2, %xmm0
+; AVX1-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $12, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $4, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $13, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $14, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $12, %xmm0, %edx
+; AVX1-NEXT:    shll $15, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    orl %eax, %edx
+; AVX1-NEXT:    vmovd %edx, %xmm0
+; AVX1-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX1-NEXT:    vpextrb $1, %xmm0, %eax
+; AVX1-NEXT:    addb %cl, %al
+; AVX1-NEXT:    # kill: def $al killed $al killed $eax
+; AVX1-NEXT:    vzeroupper
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: bitcast_v16i32_to_v2i8:
+; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; AVX2-NEXT:    vpcmpgtd %ymm0, %ymm2, %ymm0
+; AVX2-NEXT:    vpextrb $4, %xmm0, %eax
+; AVX2-NEXT:    andl $1, %eax
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rcx,%rax,2), %eax
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rax,%rcx,4), %eax
+; AVX2-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rax,%rcx,8), %eax
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm0
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $4, %ecx
+; AVX2-NEXT:    orl %eax, %ecx
+; AVX2-NEXT:    vpextrb $4, %xmm0, %eax
+; AVX2-NEXT:    andl $1, %eax
+; AVX2-NEXT:    shll $5, %eax
+; AVX2-NEXT:    orl %ecx, %eax
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $6, %ecx
+; AVX2-NEXT:    vpextrb $12, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $7, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpcmpgtd %ymm1, %ymm2, %ymm0
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $8, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $4, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $9, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $10, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $12, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $11, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm0
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $12, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $4, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $13, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $14, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $12, %xmm0, %edx
+; AVX2-NEXT:    shll $15, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    orl %eax, %edx
+; AVX2-NEXT:    vmovd %edx, %xmm0
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    vpextrb $1, %xmm0, %eax
+; AVX2-NEXT:    addb %cl, %al
+; AVX2-NEXT:    # kill: def $al killed $al killed $eax
+; AVX2-NEXT:    vzeroupper
+; AVX2-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v16i32_to_v2i8:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; AVX512-NEXT:    vpcmpgtd %zmm0, %zmm1, %k0
+; AVX512-NEXT:    kmovw %k0, -{{[0-9]+}}(%rsp)
+; AVX512-NEXT:    vmovd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; AVX512-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX512-NEXT:    vpextrb $1, %xmm0, %eax
+; AVX512-NEXT:    addb %cl, %al
+; AVX512-NEXT:    # kill: def $al killed $al killed $eax
+; AVX512-NEXT:    vzeroupper
+; AVX512-NEXT:    retq
+  %1 = icmp slt <16 x i32> %a0, zeroinitializer
+  %2 = bitcast <16 x i1> %1 to <2 x i8>
+  %3 = extractelement <2 x i8> %2, i32 0
+  %4 = extractelement <2 x i8> %2, i32 1
+  %5 = add i8 %3, %4
+  ret i8 %5
+}
+
+define i16 @bitcast_v32i16_to_v2i16(<32 x i16> %a0) nounwind {
+; SSE2-SSSE3-LABEL: bitcast_v32i16_to_v2i16:
+; SSE2-SSSE3:       # %bb.0:
+; SSE2-SSSE3-NEXT:    retq
+;
+; AVX1-LABEL: bitcast_v32i16_to_v2i16:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    pushq %rbp
+; AVX1-NEXT:    movq %rsp, %rbp
+; AVX1-NEXT:    andq $-32, %rsp
+; AVX1-NEXT:    subq $32, %rsp
+; AVX1-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; AVX1-NEXT:    vpcmpgtw %xmm0, %xmm2, %xmm3
+; AVX1-NEXT:    vpextrb $2, %xmm3, %eax
+; AVX1-NEXT:    andl $1, %eax
+; AVX1-NEXT:    vpextrb $0, %xmm3, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rcx,%rax,2), %eax
+; AVX1-NEXT:    vpextrb $4, %xmm3, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rax,%rcx,4), %eax
+; AVX1-NEXT:    vpextrb $6, %xmm3, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    leal (%rax,%rcx,8), %eax
+; AVX1-NEXT:    vpextrb $8, %xmm3, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $4, %ecx
+; AVX1-NEXT:    orl %eax, %ecx
+; AVX1-NEXT:    vpextrb $10, %xmm3, %eax
+; AVX1-NEXT:    andl $1, %eax
+; AVX1-NEXT:    shll $5, %eax
+; AVX1-NEXT:    orl %ecx, %eax
+; AVX1-NEXT:    vpextrb $12, %xmm3, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $6, %ecx
+; AVX1-NEXT:    vpextrb $14, %xmm3, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $7, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
+; AVX1-NEXT:    vpcmpgtw %xmm0, %xmm2, %xmm0
+; AVX1-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $8, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $2, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $9, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $10, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $6, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $11, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $12, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $10, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $13, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $14, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $14, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $15, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpcmpgtw %xmm1, %xmm2, %xmm0
+; AVX1-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $16, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $2, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $17, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $18, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $6, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $19, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $20, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $10, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $21, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $22, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $14, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $23, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm0
+; AVX1-NEXT:    vpcmpgtw %xmm0, %xmm2, %xmm0
+; AVX1-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $24, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $2, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $25, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $26, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $6, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $27, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $28, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $10, %xmm0, %edx
+; AVX1-NEXT:    andl $1, %edx
+; AVX1-NEXT:    shll $29, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX1-NEXT:    andl $1, %ecx
+; AVX1-NEXT:    shll $30, %ecx
+; AVX1-NEXT:    orl %edx, %ecx
+; AVX1-NEXT:    vpextrb $14, %xmm0, %edx
+; AVX1-NEXT:    shll $31, %edx
+; AVX1-NEXT:    orl %ecx, %edx
+; AVX1-NEXT:    orl %eax, %edx
+; AVX1-NEXT:    vmovd %edx, %xmm0
+; AVX1-NEXT:    vpextrw $0, %xmm0, %ecx
+; AVX1-NEXT:    vpextrw $1, %xmm0, %eax
+; AVX1-NEXT:    addl %ecx, %eax
+; AVX1-NEXT:    # kill: def $ax killed $ax killed $eax
+; AVX1-NEXT:    movq %rbp, %rsp
+; AVX1-NEXT:    popq %rbp
+; AVX1-NEXT:    vzeroupper
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: bitcast_v32i16_to_v2i16:
+; AVX2:       # %bb.0:
+; AVX2-NEXT:    pushq %rbp
+; AVX2-NEXT:    movq %rsp, %rbp
+; AVX2-NEXT:    andq $-32, %rsp
+; AVX2-NEXT:    subq $32, %rsp
+; AVX2-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; AVX2-NEXT:    vpcmpgtw %ymm0, %ymm2, %ymm0
+; AVX2-NEXT:    vpextrb $2, %xmm0, %eax
+; AVX2-NEXT:    andl $1, %eax
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rcx,%rax,2), %eax
+; AVX2-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rax,%rcx,4), %eax
+; AVX2-NEXT:    vpextrb $6, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    leal (%rax,%rcx,8), %eax
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $4, %ecx
+; AVX2-NEXT:    orl %eax, %ecx
+; AVX2-NEXT:    vpextrb $10, %xmm0, %eax
+; AVX2-NEXT:    andl $1, %eax
+; AVX2-NEXT:    shll $5, %eax
+; AVX2-NEXT:    orl %ecx, %eax
+; AVX2-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $6, %ecx
+; AVX2-NEXT:    vpextrb $14, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $7, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm0
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $8, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $2, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $9, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $10, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $6, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $11, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $12, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $10, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $13, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $14, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $14, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $15, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpcmpgtw %ymm1, %ymm2, %ymm0
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $16, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $2, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $17, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $18, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $6, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $19, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $20, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $10, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $21, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $22, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $14, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $23, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm0
+; AVX2-NEXT:    vpextrb $0, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $24, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $2, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $25, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $4, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $26, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $6, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $27, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $8, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $28, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $10, %xmm0, %edx
+; AVX2-NEXT:    andl $1, %edx
+; AVX2-NEXT:    shll $29, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    vpextrb $12, %xmm0, %ecx
+; AVX2-NEXT:    andl $1, %ecx
+; AVX2-NEXT:    shll $30, %ecx
+; AVX2-NEXT:    orl %edx, %ecx
+; AVX2-NEXT:    vpextrb $14, %xmm0, %edx
+; AVX2-NEXT:    shll $31, %edx
+; AVX2-NEXT:    orl %ecx, %edx
+; AVX2-NEXT:    orl %eax, %edx
+; AVX2-NEXT:    vmovd %edx, %xmm0
+; AVX2-NEXT:    vpextrw $0, %xmm0, %ecx
+; AVX2-NEXT:    vpextrw $1, %xmm0, %eax
+; AVX2-NEXT:    addl %ecx, %eax
+; AVX2-NEXT:    # kill: def $ax killed $ax killed $eax
+; AVX2-NEXT:    movq %rbp, %rsp
+; AVX2-NEXT:    popq %rbp
+; AVX2-NEXT:    vzeroupper
+; AVX2-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v32i16_to_v2i16:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    pushq %rbp
+; AVX512-NEXT:    movq %rsp, %rbp
+; AVX512-NEXT:    andq $-32, %rsp
+; AVX512-NEXT:    subq $32, %rsp
+; AVX512-NEXT:    vpmovw2m %zmm0, %k0
+; AVX512-NEXT:    kmovd %k0, (%rsp)
+; AVX512-NEXT:    vmovd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; AVX512-NEXT:    vpextrw $0, %xmm0, %ecx
+; AVX512-NEXT:    vpextrw $1, %xmm0, %eax
+; AVX512-NEXT:    addl %ecx, %eax
+; AVX512-NEXT:    # kill: def $ax killed $ax killed $eax
+; AVX512-NEXT:    movq %rbp, %rsp
+; AVX512-NEXT:    popq %rbp
+; AVX512-NEXT:    vzeroupper
+; AVX512-NEXT:    retq
+  %1 = icmp slt <32 x i16> %a0, zeroinitializer
+  %2 = bitcast <32 x i1> %1 to <2 x i16>
+  %3 = extractelement <2 x i16> %2, i32 0
+  %4 = extractelement <2 x i16> %2, i32 1
+  %5 = add i16 %3, %4
+  ret i16 %5
+}
+
+define i32 @bitcast_v64i8_to_v2i8(<64 x i8> %a0) nounwind {
+; SSE2-SSSE3-LABEL: bitcast_v64i8_to_v2i8:
+; SSE2-SSSE3:       # %bb.0:
+; SSE2-SSSE3-NEXT:    retq
+;
+; AVX12-LABEL: bitcast_v64i8_to_v2i8:
+; AVX12:       # %bb.0:
+; AVX12-NEXT:    retq
+;
+; AVX512-LABEL: bitcast_v64i8_to_v2i8:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vpmovb2m %zmm0, %k0
+; AVX512-NEXT:    kmovq %k0, -{{[0-9]+}}(%rsp)
+; AVX512-NEXT:    vmovq {{.*#+}} xmm0 = mem[0],zero
+; AVX512-NEXT:    vmovd %xmm0, %ecx
+; AVX512-NEXT:    vpextrd $1, %xmm0, %eax
+; AVX512-NEXT:    addl %ecx, %eax
+; AVX512-NEXT:    vzeroupper
+; AVX512-NEXT:    retq
+  %1 = icmp slt <64 x i8> %a0, zeroinitializer
+  %2 = bitcast <64 x i1> %1 to <2 x i32>
+  %3 = extractelement <2 x i32> %2, i32 0
+  %4 = extractelement <2 x i32> %2, i32 1
+  %5 = add i32 %3, %4
+  ret i32 %5
+}




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