test/CodeGen/MIR/X86/unknown-machine-basic-block.mir

# RUN: not llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o /dev/null %s 2>&1 | FileCheck %s
# This test ensures that an error is reported when an invalid machine basic
# block index is used.


--- |

  define i32 @foo(i32* %p) {
  entry:
    %a = load i32, i32* %p
    %b = icmp sle i32 %a, 10
    br i1 %b, label %0, label %1

  ; <label>:0
    ret i32 0

  ; <label>:1
    ret i32 %a
  }

...
---
name:            foo
body:
 - id: 0
   name:         entry
   instructions:
     - '%eax = MOV32rm %rdi, 1, _, 0, _'
     - 'CMP32ri8 %eax, 10, implicit-def %eflags'
     # CHECK: [[@LINE+1]]:14: use of undefined machine basic block #4
     - 'JG_1 %bb.4, implicit %eflags'
 - id: 1
   instructions:
     - '%eax = MOV32r0 implicit-def %eflags'
 - id: 2
   instructions:
     - 'RETQ %eax'
...