third_party/llvm-7.0/llvm/test/CodeGen/X86/GlobalISel/select-unmerge-vec256.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-linux-gnu -mattr=+avx               -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=AVX
# RUN: llc -mtriple=x86_64-linux-gnu -mattr=+avx512f,+avx512vl -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=AVX512VL
--- |
  define void @test_unmerge() {
    ret void
  }

...
---
name:            test_unmerge
#
alignment:       4
legalized:       true
regBankSelected: true
#
registers:
  - { id: 0, class: vecr }
  - { id: 1, class: vecr }
  - { id: 2, class: vecr }
#
body:             |
  bb.1 (%ir-block.0):

    ; AVX-LABEL: name: test_unmerge
    ; AVX: [[DEF:%[0-9]+]]:vr256 = IMPLICIT_DEF
    ; AVX: [[COPY:%[0-9]+]]:vr128 = COPY [[DEF]].sub_xmm
    ; AVX: [[VEXTRACTF128rr:%[0-9]+]]:vr128 = VEXTRACTF128rr [[DEF]], 1
    ; AVX: $xmm0 = COPY [[COPY]]
    ; AVX: $xmm1 = COPY [[VEXTRACTF128rr]]
    ; AVX: RET 0, implicit $xmm0, implicit $xmm1
    ; AVX512VL-LABEL: name: test_unmerge
    ; AVX512VL: [[DEF:%[0-9]+]]:vr256x = IMPLICIT_DEF
    ; AVX512VL: [[COPY:%[0-9]+]]:vr128x = COPY [[DEF]].sub_xmm
    ; AVX512VL: [[VEXTRACTF32x4Z256rr:%[0-9]+]]:vr128x = VEXTRACTF32x4Z256rr [[DEF]], 1
    ; AVX512VL: $xmm0 = COPY [[COPY]]
    ; AVX512VL: $xmm1 = COPY [[VEXTRACTF32x4Z256rr]]
    ; AVX512VL: RET 0, implicit $xmm0, implicit $xmm1
    %0(<8 x s32>) = IMPLICIT_DEF
    %1(<4 x s32>), %2(<4 x s32>) = G_UNMERGE_VALUES %0(<8 x s32>)
    $xmm0 = COPY %1(<4 x s32>)
    $xmm1 = COPY %2(<4 x s32>)
    RET 0, implicit $xmm0, implicit $xmm1

...