# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple aarch64-apple-ios  -run-pass=aarch64-prelegalizer-combiner %s -o - | FileCheck %s

---
name: shuffle_vector_unused_lhs
tracksRegLiveness: true
body:             |
  bb.1:
    liveins: $d0, $d1

    ; CHECK-LABEL: name: shuffle_vector_unused_lhs
    ; CHECK: liveins: $d0, $d1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<2 x s32>) = COPY $d1
    ; CHECK-NEXT: [[DEF:%[0-9]+]]:_(<2 x s32>) = G_IMPLICIT_DEF
    ; CHECK-NEXT: [[SHUF:%[0-9]+]]:_(<4 x s32>) = G_SHUFFLE_VECTOR [[COPY]](<2 x s32>), [[DEF]], shufflemask(1, 0, 1, 0)
    ; CHECK-NEXT: RET_ReallyLR implicit [[SHUF]](<4 x s32>)
    %0:_(<2 x s32>) = COPY $d0
    %1:_(<2 x s32>) = COPY $d1
    %2:_(<4 x s32>) = G_SHUFFLE_VECTOR %0(<2 x s32>), %1(<2 x s32>), shufflemask(3, 2, 3, 2)
    RET_ReallyLR implicit %2
...

---
name: shuffle_vector_unused_rhs
tracksRegLiveness: true
body:             |
  bb.1:
    liveins: $d0, $d1

    ; CHECK-LABEL: name: shuffle_vector_unused_rhs
    ; CHECK: liveins: $d0, $d1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<2 x s32>) = COPY $d0
    ; CHECK-NEXT: [[DEF:%[0-9]+]]:_(<2 x s32>) = G_IMPLICIT_DEF
    ; CHECK-NEXT: [[SHUF:%[0-9]+]]:_(<4 x s32>) = G_SHUFFLE_VECTOR [[COPY]](<2 x s32>), [[DEF]], shufflemask(0, 0, 1, 1)
    ; CHECK-NEXT: RET_ReallyLR implicit [[SHUF]](<4 x s32>)
    %0:_(<2 x s32>) = COPY $d0
    %1:_(<2 x s32>) = COPY $d1
    %2:_(<4 x s32>) = G_SHUFFLE_VECTOR %0, %1, shufflemask(0,0,1,1)
    RET_ReallyLR implicit %2
...

---
name: shuffle_vector_both_used
tracksRegLiveness: true
body:             |
  bb.1:
    liveins: $d0, $d1

    ; CHECK-LABEL: name: shuffle_vector_both_used
    ; CHECK: liveins: $d0, $d1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<2 x s32>) = COPY $d0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<2 x s32>) = COPY $d1
    ; CHECK-NEXT: [[SHUF:%[0-9]+]]:_(<4 x s32>) = G_SHUFFLE_VECTOR [[COPY]](<2 x s32>), [[COPY1]], shufflemask(0, 2, 1, 3)
    ; CHECK-NEXT: RET_ReallyLR implicit [[SHUF]](<4 x s32>)
    %0:_(<2 x s32>) = COPY $d0
    %1:_(<2 x s32>) = COPY $d1
    %2:_(<4 x s32>) = G_SHUFFLE_VECTOR %0, %1, shufflemask(0,2,1,3)
    RET_ReallyLR implicit %2
...

---
name: shuffle_vector_undef_elems
tracksRegLiveness: true
body:             |
  bb.1:
    liveins: $d0, $d1

    ; CHECK-LABEL: name: shuffle_vector_undef_elems
    ; CHECK: liveins: $d0, $d1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<2 x s32>) = COPY $d0
    ; CHECK-NEXT: [[DEF:%[0-9]+]]:_(<2 x s32>) = G_IMPLICIT_DEF
    ; CHECK-NEXT: [[SHUF:%[0-9]+]]:_(<4 x s32>) = G_SHUFFLE_VECTOR [[COPY]](<2 x s32>), [[DEF]], shufflemask(undef, 0, 1, undef)
    ; CHECK-NEXT: RET_ReallyLR implicit [[SHUF]](<4 x s32>)
    %0:_(<2 x s32>) = COPY $d0
    %1:_(<2 x s32>) = COPY $d1
    %2:_(<4 x s32>) = G_SHUFFLE_VECTOR %0, %1, shufflemask(-1,0,1,-1)
    RET_ReallyLR implicit %2
...