llvm-project/llvm/test/CodeGen/MIR/X86/undefined-ir-block-in-blockaddress.mir

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

--- |

  @addr = global i8* null

  define void @test() {
  entry:
    store volatile i8* blockaddress(@test, %block), i8** @addr
    %val = load volatile i8*, i8** @addr
    indirectbr i8* %val, [label %block]

  block:
    ret void
  }

...
---
name:            test
body: |
  bb.0.entry:
    successors: %bb.1.block
    ; CHECK: [[@LINE+1]]:51: use of undefined IR block '%ir-block."block "'
    %rax = LEA64r %rip, 1, _, blockaddress(@test, %ir-block."block "), _
    MOV64mr %rip, 1, _, @addr, _, killed %rax
    JMP64m %rip, 1, _, @addr, _

  bb.1.block (address-taken):
    RETQ
...