diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/jump_sign.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/CodeGen/X86/jump_sign.ll b/test/CodeGen/X86/jump_sign.ll index 567490b..e84f49c 100644 --- a/test/CodeGen/X86/jump_sign.ll +++ b/test/CodeGen/X86/jump_sign.ll @@ -102,6 +102,24 @@ entry: %cond = select i1 %cmp, i32 %b, i32 %sub ret i32 %cond } +; If EFLAGS is live-out, we can't remove cmp if there exists +; a swapped sub. +define i32 @l2(i32 %a, i32 %b) nounwind { +entry: +; CHECK: l2: +; CHECK: cmp + %cmp = icmp eq i32 %b, %a + %sub = sub nsw i32 %a, %b + br i1 %cmp, label %if.then, label %if.else + +if.then: + %cmp2 = icmp sgt i32 %b, %a + %sel = select i1 %cmp2, i32 %sub, i32 %a + ret i32 %sel + +if.else: + ret i32 %sub +} ; rdar://11540023 define i32 @n(i32 %x, i32 %y) nounwind { entry: |