llvm-project/llvm/test/CodeGen/MIR/successor-basic-blocks.mir
Alex Lorenz f09df00daa MIR Serialization: Serialize MBB successors.
This commit implements serialization of the machine basic block successors. It
uses a YAML flow sequence that contains strings that have the MBB references.
The MBB references in those strings use the same syntax as the MBB machine
operands in the machine instruction strings.

Reviewers: Duncan P. N. Exon Smith

Differential Revision: http://reviews.llvm.org/D10699

llvm-svn: 241093
2015-06-30 18:16:42 +00:00

59 lines
1.1 KiB
YAML

# 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
...