llvm/llvm/test/CodeGen/AArch64/GlobalISel/postlegalizer-lowering-uzp.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
#
# Check that we can recognize a shuffle mask for a uzp instruction and produce
# a G_UZP1 or G_UZP2 where appropriate.
#
# RUN: llc -mtriple aarch64 -run-pass=aarch64-postlegalizer-lowering -verify-machineinstrs %s -o - | FileCheck %s

...
---
name:            uzp1_v4s32
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $q0, $q1

    ; CHECK-LABEL: name: uzp1_v4s32
    ; CHECK: liveins: $q0, $q1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s32>) = COPY $q0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<4 x s32>) = COPY $q1
    ; CHECK-NEXT: [[UZP1_:%[0-9]+]]:_(<4 x s32>) = G_UZP1 [[COPY]], [[COPY1]]
    ; CHECK-NEXT: $q0 = COPY [[UZP1_]](<4 x s32>)
    ; CHECK-NEXT: RET_ReallyLR implicit $q0
    %0:_(<4 x s32>) = COPY $q0
    %1:_(<4 x s32>) = COPY $q1
    %2:_(<4 x s32>) = G_SHUFFLE_VECTOR %0(<4 x s32>), %1, shufflemask(0, 2, 4, 6)
    $q0 = COPY %2(<4 x s32>)
    RET_ReallyLR implicit $q0

...
---
name:            uzp2_v4s32
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $q0, $q1

    ; CHECK-LABEL: name: uzp2_v4s32
    ; CHECK: liveins: $q0, $q1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s32>) = COPY $q0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<4 x s32>) = COPY $q1
    ; CHECK-NEXT: [[UZP2_:%[0-9]+]]:_(<4 x s32>) = G_UZP2 [[COPY]], [[COPY1]]
    ; CHECK-NEXT: $q0 = COPY [[UZP2_]](<4 x s32>)
    ; CHECK-NEXT: RET_ReallyLR implicit $q0
    %0:_(<4 x s32>) = COPY $q0
    %1:_(<4 x s32>) = COPY $q1
    %2:_(<4 x s32>) = G_SHUFFLE_VECTOR %0(<4 x s32>), %1, shufflemask(1, 3, 5, 7)
    $q0 = COPY %2(<4 x s32>)
    RET_ReallyLR implicit $q0

...
---
name:            no_uzp1
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $q0, $q1

    ; See isUZPMask: Mask[1] != 2 * i + 0

    ; CHECK-LABEL: name: no_uzp1
    ; CHECK: liveins: $q0, $q1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s32>) = COPY $q0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<4 x s32>) = COPY $q1
    ; CHECK-NEXT: [[SHUF:%[0-9]+]]:_(<4 x s32>) = G_SHUFFLE_VECTOR [[COPY]](<4 x s32>), [[COPY1]], shufflemask(0, 1, 4, 6)
    ; CHECK-NEXT: $q0 = COPY [[SHUF]](<4 x s32>)
    ; CHECK-NEXT: RET_ReallyLR implicit $q0
    %0:_(<4 x s32>) = COPY $q0
    %1:_(<4 x s32>) = COPY $q1
    %2:_(<4 x s32>) = G_SHUFFLE_VECTOR %0(<4 x s32>), %1, shufflemask(0, 1, 4, 6)
    $q0 = COPY %2(<4 x s32>)
    RET_ReallyLR implicit $q0

...
---
name:            no_uzp2
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $q0, $q1

    ; See isUZPMask: Mask[1] != 2 * i + 1

    ; CHECK-LABEL: name: no_uzp2
    ; CHECK: liveins: $q0, $q1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s32>) = COPY $q0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<4 x s32>) = COPY $q1
    ; CHECK-NEXT: [[SHUF:%[0-9]+]]:_(<4 x s32>) = G_SHUFFLE_VECTOR [[COPY]](<4 x s32>), [[COPY1]], shufflemask(1, 4, 5, 7)
    ; CHECK-NEXT: $q0 = COPY [[SHUF]](<4 x s32>)
    ; CHECK-NEXT: RET_ReallyLR implicit $q0
    %0:_(<4 x s32>) = COPY $q0
    %1:_(<4 x s32>) = COPY $q1
    %2:_(<4 x s32>) = G_SHUFFLE_VECTOR %0(<4 x s32>), %1, shufflemask(1, 4, 5, 7)
    $q0 = COPY %2(<4 x s32>)
    RET_ReallyLR implicit $q0

...
---
name:            uzp1_undef
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $q0, $q1

    ; Make sure that we can still produce a uzp1/uzp2 with undef indices.

    ; CHECK-LABEL: name: uzp1_undef
    ; CHECK: liveins: $q0, $q1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s32>) = COPY $q0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<4 x s32>) = COPY $q1
    ; CHECK-NEXT: [[UZP1_:%[0-9]+]]:_(<4 x s32>) = G_UZP1 [[COPY]], [[COPY1]]
    ; CHECK-NEXT: $q0 = COPY [[UZP1_]](<4 x s32>)
    ; CHECK-NEXT: RET_ReallyLR implicit $q0
    %0:_(<4 x s32>) = COPY $q0
    %1:_(<4 x s32>) = COPY $q1
    %2:_(<4 x s32>) = G_SHUFFLE_VECTOR %0(<4 x s32>), %1, shufflemask(0, -1, 4, 6)
    $q0 = COPY %2(<4 x s32>)
    RET_ReallyLR implicit $q0

...
---
name:            uzp2_undef
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $q0, $q1

    ; Make sure that we can still produce a uzp1/uzp2 with undef indices.

    ; CHECK-LABEL: name: uzp2_undef
    ; CHECK: liveins: $q0, $q1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s32>) = COPY $q0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<4 x s32>) = COPY $q1
    ; CHECK-NEXT: [[UZP2_:%[0-9]+]]:_(<4 x s32>) = G_UZP2 [[COPY]], [[COPY1]]
    ; CHECK-NEXT: $q0 = COPY [[UZP2_]](<4 x s32>)
    ; CHECK-NEXT: RET_ReallyLR implicit $q0
    %0:_(<4 x s32>) = COPY $q0
    %1:_(<4 x s32>) = COPY $q1
    %2:_(<4 x s32>) = G_SHUFFLE_VECTOR %0(<4 x s32>), %1, shufflemask(1, 3, -1, 7)
    $q0 = COPY %2(<4 x s32>)
    RET_ReallyLR implicit $q0