diff options
| author | Akira Hatanaka <ahatanak@gmail.com> | 2011-07-19 23:30:50 +0000 |
|---|---|---|
| committer | Akira Hatanaka <ahatanak@gmail.com> | 2011-07-19 23:30:50 +0000 |
| commit | db54826f20c6cbcb9b195c4b49c946d6488156dd (patch) | |
| tree | 22c9baff4f7abcbbf2bcd0c6e28900e19ac57762 /test/CodeGen/Mips | |
| parent | 70955c2d12bd64dbb2faa626ea8fe18abb621e1c (diff) | |
| download | external_llvm-db54826f20c6cbcb9b195c4b49c946d6488156dd.zip external_llvm-db54826f20c6cbcb9b195c4b49c946d6488156dd.tar.gz external_llvm-db54826f20c6cbcb9b195c4b49c946d6488156dd.tar.bz2 | |
Lower memory barriers to sync instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135537 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/Mips')
| -rw-r--r-- | test/CodeGen/Mips/atomic.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/CodeGen/Mips/atomic.ll b/test/CodeGen/Mips/atomic.ll index e110602..50bcc09 100644 --- a/test/CodeGen/Mips/atomic.ll +++ b/test/CodeGen/Mips/atomic.ll @@ -12,6 +12,7 @@ declare i8 @llvm.atomic.load.nand.i8.p0i8(i8* nocapture, i8) nounwind declare i8 @llvm.atomic.swap.i8.p0i8(i8* nocapture, i8) nounwind declare i8 @llvm.atomic.cmp.swap.i8.p0i8(i8* nocapture, i8, i8) nounwind +declare void @llvm.memory.barrier(i1, i1, i1, i1, i1) nounwind @x = common global i32 0, align 4 @@ -239,3 +240,21 @@ entry: ; CHECK: sll $[[R17:[0-9]+]], $[[R16]], 24 ; CHECK: sra $2, $[[R17]], 24 } + +@countsint = common global i32 0, align 4 + +define i32 @CheckSync(i32 %v) nounwind noinline { +entry: + tail call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true) + %0 = tail call i32 @llvm.atomic.load.add.i32.p0i32(i32* @countsint, i32 %v) + tail call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true) + ret i32 %0 + +; CHECK: CheckSync: +; CHECK: sync 0 +; CHECK: ll +; CHECK: sc +; CHECK: beq +; CHECK: sync 0 +} + |