test/CodeGen/AArch64/machine-sink-getmemoperandwithoffset.mir

# RUN: llc -mtriple=aarch64-none-linux-gnu -run-pass machine-sink -o - %s | FileCheck %s
--- |
  define i8 @g() {
  else.7:
    br i1 undef, label %then.8, label %else.8, !make.implicit !0

  then.8:                                           ; preds = %else.8, %else.7
    %merge = phi i8 [ 1, %else.7 ], [ 0, %else.8 ]
    ret i8 %merge ;1 ;%merge

  else.8:                                           ; preds = %else.7
    %icmp.8 = icmp eq i64 undef, undef
  ;  ret i8 0 ; added
    br i1 %icmp.8, label %else.11, label %then.8

  else.11:                                          ; preds = %else.8
    ret i8 undef
  }

  !0 = !{}
...
---
name:            g
tracksRegLiveness: true
registers:
  - { id: 0, class: gpr32all }
  - { id: 1, class: gpr32all }
  - { id: 2, class: gpr32 }
  - { id: 3, class: gpr32 }
  - { id: 4, class: gpr32all }
  - { id: 5, class: gpr32 }
  - { id: 6, class: gpr32all }
body:             |
  ; Just check that the pass didn't crash/assert.
  ; CHECK-LABEL: name: g
  bb.0.else.7:
    successors: %bb.1, %bb.2

    %2:gpr32 = MOVi32imm 1
  ; Sinking the below COPY instruction caused an assert to trigger before
  ; requiring getMemOperandWithOffset to return false rather than assert
  ; when handling non-memory operations.
    %1:gpr32all = COPY %2
    %3:gpr32 = COPY $wzr
    CBNZW %3, %bb.2
    B %bb.1

  bb.1.then.8:
    %0:gpr32all = PHI %1, %bb.0, %4, %bb.2
    $w0 = COPY %0
    RET_ReallyLR implicit $w0

  bb.2.else.8:
    successors: %bb.3, %bb.1

    %5:gpr32 = COPY $wzr
    %4:gpr32all = COPY %5
    CBNZW %5, %bb.1
    B %bb.3

  bb.3.else.11:
    %6:gpr32all = IMPLICIT_DEF
    $w0 = COPY %6
    RET_ReallyLR implicit $w0
...