test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-simplify-add.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:            pat1
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $x0, $x1
    ; Fold ((0-A) + B) -> B - A
    ; CHECK-LABEL: name: pat1
    ; CHECK: liveins: $x0, $x1
    ; CHECK: %copy1:_(s64) = COPY $x0
    ; CHECK: %copy2:_(s64) = COPY $x1
    ; CHECK: %add:_(s64) = G_SUB %copy2, %copy1
    ; CHECK: $x0 = COPY %add(s64)
    ; CHECK: RET_ReallyLR implicit $x0
    %copy1:_(s64) = COPY $x0
    %copy2:_(s64) = COPY $x1
    %zero:_(s64) = G_CONSTANT i64 0
    %sub:_(s64) = G_SUB %zero, %copy1
    %add:_(s64) = G_ADD %sub, %copy2
    $x0 = COPY %add(s64)
    RET_ReallyLR implicit $x0

...
---
name:            pat2
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $x0, $x1
    ; Fold (A + (0-B)) -> A - B
    ; CHECK-LABEL: name: pat2
    ; CHECK: liveins: $x0, $x1
    ; CHECK: %copy1:_(s64) = COPY $x0
    ; CHECK: %copy2:_(s64) = COPY $x1
    ; CHECK: %add:_(s64) = G_SUB %copy1, %copy2
    ; CHECK: $x0 = COPY %add(s64)
    ; CHECK: RET_ReallyLR implicit $x0
    %copy1:_(s64) = COPY $x0
    %copy2:_(s64) = COPY $x1
    %zero:_(s64) = G_CONSTANT i64 0
    %sub:_(s64) = G_SUB %zero, %copy2
    %add:_(s64) = G_ADD %copy1, %sub
    $x0 = COPY %add(s64)
    RET_ReallyLR implicit $x0

...