test/CodeGen/MIR/successor-basic-blocks.mir

# RUN: llc -start-after branch-folder -stop-after branch-folder -o /dev/null %s | FileCheck %s
# This test ensures that the MIR parser parses basic block successors correctly.

--- |

  define i32 @foo(i32 %a) {
  entry:
    %0 = icmp sle i32 %a, 10
    br i1 %0, label %less, label %exit

  less:
    ret i32 0

  exit:
    ret i32 %a
  }

  define i32 @bar(i32 %a) {
  entry:
    %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:
  # CHECK: name: entry
  # CHECK: successors: [ '%bb.1.less', '%bb.2.exit' ]
  # CHECK: name: less
  - id:          0
    name:        entry
    successors:  [ '%bb.1.less', '%bb.2.exit' ]
  - id:          1
    name:        less
  - id:          2
    name:        exit
...
---
name:            bar
body:
  # CHECK: name: bar
  # CHECK: name: entry
  # CHECK: successors: [ '%bb.1', '%bb.2' ]
  # CHECK: id: 1
  # CHECK: id: 2
  - id:          0
    name:        entry
    successors:  [ '%bb.1', '%bb.2' ]
  - id:          1
  - id:          2
...