llvm/test/CodeGen/MIR/X86/undefined-fixed-stack-object.mir

# RUN: not llc -march=x86-64 -run-pass none -o /dev/null %s 2>&1 | FileCheck %s
--- |

  define i32 @test(i32 %a) {
  entry:
    %b = alloca i32
    %0 = alloca i32
    store i32 %a, i32* %b
    store i32 2, i32* %0
    %c = load i32, i32* %b
    ret i32 %c
  }

...
---
name:            test
tracksRegLiveness: true
registers:
  - { id: 0, class: gr32 }
  - { id: 1, class: gr32 }
frameInfo:
  maxAlignment:    4
fixedStack:
  - { id: 0, offset: 0, size: 4, isImmutable: true, isAliased: false }
stack:
  - { id: 0, name: b, size: 4, alignment: 4 }
  - { id: 1, size: 4, alignment: 4 }
body: |
  bb.0.entry:
    ; CHECK: [[@LINE+1]]:18: use of undefined fixed stack object '%fixed-stack.11'
    %0 = MOV32rm %fixed-stack.11, 1, _, 0, _
    MOV32mr %stack.0, 1, _, 0, _, %0
    MOV32mi %stack.1, 1, _, 0, _, 2
    %1 = MOV32rm %stack.0, 1, _, 0, _
    $eax = COPY %1
    RET32 $eax
...