test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-xor-of-and-with-same-reg.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py

# RUN: llc -mtriple aarch64 -debugify-and-strip-all-safe -run-pass=aarch64-prelegalizer-combiner -verify-machineinstrs %s -o - | FileCheck %s

...
---
name:            fold_scalar
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $w0, $w1
    ; (xor (and x, y), y) -> (and (not x), y)
    ; CHECK-LABEL: name: fold_scalar
    ; CHECK: liveins: $w0, $w1
    ; CHECK: %x:_(s32) = COPY $w0
    ; CHECK: %y:_(s32) = COPY $w1
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; CHECK: [[XOR:%[0-9]+]]:_(s32) = G_XOR %x, [[C]]
    ; CHECK: %xor:_(s32) = G_AND [[XOR]], %y
    ; CHECK: $w0 = COPY %xor(s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %x:_(s32) = COPY $w0
    %y:_(s32) = COPY $w1
    %and:_(s32) = G_AND %x, %y
    %xor:_(s32) = G_XOR %and, %y
    $w0 = COPY %xor(s32)
    RET_ReallyLR implicit $w0

...
---
name:            fold_vector
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $x0, $x1
    ; Vector edition
    ; CHECK-LABEL: name: fold_vector
    ; CHECK: liveins: $x0, $x1
    ; CHECK: %x:_(<2 x s32>) = COPY $x0
    ; CHECK: %y:_(<2 x s32>) = COPY $x1
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; CHECK: [[BUILD_VECTOR:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[C]](s32), [[C]](s32)
    ; CHECK: [[XOR:%[0-9]+]]:_(<2 x s32>) = G_XOR %x, [[BUILD_VECTOR]]
    ; CHECK: %xor:_(<2 x s32>) = G_AND [[XOR]], %y
    ; CHECK: $x0 = COPY %xor(<2 x s32>)
    ; CHECK: RET_ReallyLR implicit $x0
    %x:_(<2 x s32>) = COPY $x0
    %y:_(<2 x s32>) = COPY $x1
    %and:_(<2 x s32>) = G_AND %x, %y
    %xor:_(<2 x s32>) = G_XOR %and, %y
    $x0 = COPY %xor(<2 x s32>)
    RET_ReallyLR implicit $x0

...
---
name:            fold_commuted_and
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $w0, $w1
    ; (xor (and y, x), y) -> (and (not x), y)
    ; CHECK-LABEL: name: fold_commuted_and
    ; CHECK: liveins: $w0, $w1
    ; CHECK: %x:_(s32) = COPY $w0
    ; CHECK: %y:_(s32) = COPY $w1
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; CHECK: [[XOR:%[0-9]+]]:_(s32) = G_XOR %x, [[C]]
    ; CHECK: %xor:_(s32) = G_AND [[XOR]], %y
    ; CHECK: $w0 = COPY %xor(s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %x:_(s32) = COPY $w0
    %y:_(s32) = COPY $w1
    %and:_(s32) = G_AND %y, %x
    %xor:_(s32) = G_XOR %and, %y
    $w0 = COPY %xor(s32)
    RET_ReallyLR implicit $w0

...
---
name:            fold_commuted_xor
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $w0, $w1
    ; (xor y, (and x, y)) -> (and (not x), y)
    ; CHECK-LABEL: name: fold_commuted_xor
    ; CHECK: liveins: $w0, $w1
    ; CHECK: %x:_(s32) = COPY $w0
    ; CHECK: %y:_(s32) = COPY $w1
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; CHECK: [[XOR:%[0-9]+]]:_(s32) = G_XOR %x, [[C]]
    ; CHECK: %xor:_(s32) = G_AND [[XOR]], %y
    ; CHECK: $w0 = COPY %xor(s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %x:_(s32) = COPY $w0
    %y:_(s32) = COPY $w1
    %and:_(s32) = G_AND %x, %y
    %xor:_(s32) = G_XOR %y, %and
    $w0 = COPY %xor(s32)
    RET_ReallyLR implicit $w0

...
---
name:            fold_commuted_xor_and
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $w0, $w1
    ; (xor y, (and x, y)) -> (and (not x), y)
    ; CHECK-LABEL: name: fold_commuted_xor_and
    ; CHECK: liveins: $w0, $w1
    ; CHECK: %x:_(s32) = COPY $w0
    ; CHECK: %y:_(s32) = COPY $w1
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; CHECK: [[XOR:%[0-9]+]]:_(s32) = G_XOR %x, [[C]]
    ; CHECK: %xor:_(s32) = G_AND [[XOR]], %y
    ; CHECK: $w0 = COPY %xor(s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %x:_(s32) = COPY $w0
    %y:_(s32) = COPY $w1
    %and:_(s32) = G_AND %y, %x
    %xor:_(s32) = G_XOR %y, %and
    $w0 = COPY %xor(s32)
    RET_ReallyLR implicit $w0

...
---
name:            dont_fold_different_regs
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $w0, $w1, $w2
    ; The G_AND does not share any registers with the G_XOR
    ; CHECK-LABEL: name: dont_fold_different_regs
    ; CHECK: liveins: $w0, $w1, $w2
    ; CHECK: %x:_(s32) = COPY $w0
    ; CHECK: %y:_(s32) = COPY $w1
    ; CHECK: %z:_(s32) = COPY $w2
    ; CHECK: %and:_(s32) = G_AND %x, %z
    ; CHECK: %xor:_(s32) = G_XOR %and, %y
    ; CHECK: $w0 = COPY %xor(s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %x:_(s32) = COPY $w0
    %y:_(s32) = COPY $w1
    %z:_(s32) = COPY $w2
    %and:_(s32) = G_AND %x, %z
    %xor:_(s32) = G_XOR %and, %y
    $w0 = COPY %xor(s32)
    RET_ReallyLR implicit $w0

...
---
name:            dont_fold_more_than_one_use
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $w0, $w1, $w2
    ; Don't fold when the G_AND is used outside the G_XOR.
    ;
    ; CHECK-LABEL: name: dont_fold_more_than_one_use
    ; CHECK: liveins: $w0, $w1, $w2
    ; CHECK: %x:_(s32) = COPY $w0
    ; CHECK: %y:_(s32) = COPY $w1
    ; CHECK: %z:_(s32) = COPY $w2
    ; CHECK: %and:_(s32) = G_AND %x, %z
    ; CHECK: %xor:_(s32) = G_XOR %and, %y
    ; CHECK: %add:_(s32) = G_ADD %and, %xor
    ; CHECK: $w0 = COPY %add(s32)
    ; CHECK: RET_ReallyLR implicit $w0
    %x:_(s32) = COPY $w0
    %y:_(s32) = COPY $w1
    %z:_(s32) = COPY $w2
    %and:_(s32) = G_AND %x, %z
    %xor:_(s32) = G_XOR %and, %y
    %add:_(s32) = G_ADD %and, %xor
    $w0 = COPY %add(s32)
    RET_ReallyLR implicit $w0