forked from OSchip/llvm-project
29 lines
560 B
YAML
29 lines
560 B
YAML
# RUN: llc -o - %s -mtriple=i686-- -run-pass branch-folder | FileCheck %s
|
|
# Test that tail merging drops undef flags that aren't present on all
|
|
# instructions to be merged.
|
|
--- |
|
|
define void @func() { ret void }
|
|
...
|
|
---
|
|
# CHECK-LABEL: name: func
|
|
# CHECK: bb.1:
|
|
# CHECK: $eax = MOV32ri 2
|
|
# CHECK-NOT: RET
|
|
# CHECK: bb.2:
|
|
# CHECK-NOT: RET 0, undef $eax
|
|
# CHECK: RET 0, $eax
|
|
name: func
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
JE_1 %bb.1, implicit undef $eflags
|
|
JMP_1 %bb.2
|
|
|
|
bb.1:
|
|
$eax = MOV32ri 2
|
|
RET 0, $eax
|
|
|
|
bb.2:
|
|
RET 0, undef $eax
|
|
...
|