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| author | Jim Grosbach <grosbach@apple.com> | 2011-07-12 16:06:01 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2011-07-12 16:06:01 +0000 |
| commit | 92bf81ddd06b6ed16069fb1bf7f10a14508344d9 (patch) | |
| tree | 64e01c3d96b29bbd259b3a47b1d2afc21c5284d6 /test/CodeGen/Thumb2/thumb2-bcc.ll | |
| parent | c0f33cb59006d42d9d37b02a9158e1a370fc246b (diff) | |
| download | external_llvm-92bf81ddd06b6ed16069fb1bf7f10a14508344d9.zip external_llvm-92bf81ddd06b6ed16069fb1bf7f10a14508344d9.tar.gz external_llvm-92bf81ddd06b6ed16069fb1bf7f10a14508344d9.tar.bz2 | |
Improve test cases from r134746.
Use memory barriers to force if-conversion off for these tests instead of
the internal llc command line option ifcvt-limit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134986 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/Thumb2/thumb2-bcc.ll')
| -rw-r--r-- | test/CodeGen/Thumb2/thumb2-bcc.ll | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/test/CodeGen/Thumb2/thumb2-bcc.ll b/test/CodeGen/Thumb2/thumb2-bcc.ll index 5e07b7c..70febc0 100644 --- a/test/CodeGen/Thumb2/thumb2-bcc.ll +++ b/test/CodeGen/Thumb2/thumb2-bcc.ll @@ -1,7 +1,8 @@ -; RUN: llc < %s -ifcvt-limit=0 -march=thumb -mattr=+thumb2 | FileCheck %s -; RUN: llc < %s -ifcvt-limit=0 -march=thumb -mattr=+thumb2 | not grep it +; 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 turn it off. +; 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: @@ -10,12 +11,16 @@ define i32 @t1(i32 %a, i32 %b, i32 %c) { 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 |