test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-undef.mir

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

name:            uitofp_to_zero
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: uitofp_to_zero
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_FCONSTANT float 0.000000e+00
    ; CHECK: $s0 = COPY [[C]](s32)
    ; CHECK: RET_ReallyLR implicit $s0
    %0:_(s32) = G_IMPLICIT_DEF
    %1:_(s32) = G_UITOFP %0(s32)
    $s0 = COPY %1(s32)
    RET_ReallyLR implicit $s0

...
---
name:            sitofp_to_zero
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: sitofp_to_zero
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_FCONSTANT float 0.000000e+00
    ; CHECK: $s0 = COPY [[C]](s32)
    ; CHECK: RET_ReallyLR implicit $s0
    %0:_(s32) = G_IMPLICIT_DEF
    %1:_(s32) = G_SITOFP %0(s32)
    $s0 = COPY %1(s32)
    RET_ReallyLR implicit $s0

...
---
name:            and_to_zero
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: and_to_zero
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; CHECK: $w0 = COPY [[C]](s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %0:_(s32) = G_CONSTANT i32 10
    %1:_(s32) = G_IMPLICIT_DEF
    %2:_(s32) = G_AND %0, %1
    $w0 = COPY %2(s32)
    RET_ReallyLR implicit $w0

...
---
name:            mul_to_zero
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: mul_to_zero
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; CHECK: $w0 = COPY [[C]](s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %0:_(s32) = G_CONSTANT i32 10
    %1:_(s32) = G_IMPLICIT_DEF
    %2:_(s32) = G_MUL %0, %1
    $w0 = COPY %2(s32)
    RET_ReallyLR implicit $w0

...
---
name:            or_to_negative_one
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: or_to_negative_one
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; CHECK: $w0 = COPY [[C]](s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %0:_(s32) = G_CONSTANT i32 10
    %1:_(s32) = G_IMPLICIT_DEF
    %2:_(s32) = G_OR %0, %1
    $w0 = COPY %2(s32)
    RET_ReallyLR implicit $w0

...
---
name:            xor_to_undef
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: xor_to_undef
    ; CHECK: [[DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
    ; CHECK: $w0 = COPY [[DEF]](s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %0:_(s32) = G_CONSTANT i32 10
    %1:_(s32) = G_IMPLICIT_DEF
    %2:_(s32) = G_XOR %0, %1
    $w0 = COPY %2(s32)
    RET_ReallyLR implicit $w0

...
---
name:            add_to_undef
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: add_to_undef
    ; CHECK: [[DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
    ; CHECK: $w0 = COPY [[DEF]](s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %0:_(s32) = G_CONSTANT i32 10
    %1:_(s32) = G_IMPLICIT_DEF
    %2:_(s32) = G_ADD %0, %1
    $w0 = COPY %2(s32)
    RET_ReallyLR implicit $w0

...
---
name:            sub_to_undef
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: sub_to_undef
    ; CHECK: [[DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
    ; CHECK: $w0 = COPY [[DEF]](s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %0:_(s32) = G_CONSTANT i32 10
    %1:_(s32) = G_IMPLICIT_DEF
    %2:_(s32) = G_SUB %0, %1
    $w0 = COPY %2(s32)
    RET_ReallyLR implicit $w0

...
---
name:            fptoui_to_undef
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: fptoui_to_undef
    ; CHECK: [[DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
    ; CHECK: $w0 = COPY [[DEF]](s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %0:_(s32) = G_IMPLICIT_DEF
    %1:_(s32) = G_FPTOUI %0(s32)
    $w0 = COPY %1(s32)
    RET_ReallyLR implicit $w0

...
---
name:            fptosi_to_undef
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: fptosi_to_undef
    ; CHECK: [[DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
    ; CHECK: $w0 = COPY [[DEF]](s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %0:_(s32) = G_IMPLICIT_DEF
    %1:_(s32) = G_FPTOSI %0(s32)
    $w0 = COPY %1(s32)
    RET_ReallyLR implicit $w0

...
---
name:            shufflevector_undef_ops_to_undef
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: shufflevector_undef_ops_to_undef
    ; CHECK: [[DEF:%[0-9]+]]:_(<2 x s32>) = G_IMPLICIT_DEF
    ; CHECK: $d0 = COPY [[DEF]](<2 x s32>)
    ; CHECK: RET_ReallyLR implicit $d0
    %1:_(<2 x s32>) = G_IMPLICIT_DEF
    %2:_(<2 x s32>) = G_IMPLICIT_DEF
    %0:_(<2 x s32>) = G_SHUFFLE_VECTOR %1(<2 x s32>), %2(<2 x s32>), shufflemask(0, 1)
    $d0 = COPY %0(<2 x s32>)
    RET_ReallyLR implicit $d0

...
---
name:            shufflevector_undef_mask_to_undef
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $d0, $d1
    ; CHECK-LABEL: name: shufflevector_undef_mask_to_undef
    ; CHECK: liveins: $d0, $d1
    ; CHECK: [[DEF:%[0-9]+]]:_(<2 x s32>) = G_IMPLICIT_DEF
    ; CHECK: $d0 = COPY [[DEF]](<2 x s32>)
    ; CHECK: RET_ReallyLR implicit $d0
    %0:_(<2 x s32>) = COPY $d0
    %1:_(<2 x s32>) = COPY $d1
    %2:_(<2 x s32>) = G_SHUFFLE_VECTOR %0(<2 x s32>), %1, shufflemask(undef, undef)
    $d0 = COPY %2(<2 x s32>)
    RET_ReallyLR implicit $d0

...
---
name:            shufflevector_not_all_ops_undef
alignment:       4
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $d0
    ; Show that we don't do the combine when one of the vectors is not a
    ; G_IMPLICIT_DEF.
    ;
    ; CHECK-LABEL: name: shufflevector_not_all_ops_undef
    ; CHECK: liveins: $d0
    ; CHECK: [[DEF:%[0-9]+]]:_(<2 x s32>) = G_IMPLICIT_DEF
    ; CHECK: [[COPY:%[0-9]+]]:_(<2 x s32>) = COPY $d0
    ; CHECK: [[SHUF:%[0-9]+]]:_(<2 x s32>) = G_SHUFFLE_VECTOR [[DEF]](<2 x s32>), [[COPY]], shufflemask(0, 1)
    ; CHECK: $d0 = COPY [[SHUF]](<2 x s32>)
    ; CHECK: RET_ReallyLR implicit $d0
    %1:_(<2 x s32>) = G_IMPLICIT_DEF
    %2:_(<2 x s32>) = COPY $d0
    %0:_(<2 x s32>) = G_SHUFFLE_VECTOR %1(<2 x s32>), %2(<2 x s32>), shufflemask(0, 1)
    $d0 = COPY %0(<2 x s32>)
    RET_ReallyLR implicit $d0