mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-22 04:22:57 +02:00
863f0216d5
Use memory barriers to force if-conversion off for these tests instead of the internal llc command line option ifcvt-limit. llvm-svn: 134986
27 lines
849 B
LLVM
27 lines
849 B
LLVM
; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s
|
|
; RUN: llc < %s -march=thumb -mattr=+thumb2 | not grep it
|
|
; If-conversion defeats the purpose of this test, which is to check CBZ
|
|
; generation, so use memory barrier instruction to make sure it doesn't
|
|
; happen and we get actual branches.
|
|
|
|
define i32 @t1(i32 %a, i32 %b, i32 %c) {
|
|
; CHECK: t1:
|
|
; CHECK: cbz
|
|
%tmp2 = icmp eq i32 %a, 0
|
|
br i1 %tmp2, label %cond_false, label %cond_true
|
|
|
|
cond_true:
|
|
call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
|
|
%tmp5 = add i32 %b, 1
|
|
%tmp6 = and i32 %tmp5, %c
|
|
ret i32 %tmp6
|
|
|
|
cond_false:
|
|
call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
|
|
%tmp7 = add i32 %b, -1
|
|
%tmp8 = xor i32 %tmp7, %c
|
|
ret i32 %tmp8
|
|
}
|
|
|
|
declare void @llvm.memory.barrier(i1, i1, i1, i1, i1) nounwind
|