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| author | Eli Friedman <eli.friedman@gmail.com> | 2011-08-17 22:22:24 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2011-08-17 22:22:24 +0000 |
| commit | 56efe24431b045be120d1fd5f6b0aa43a6b01c48 (patch) | |
| tree | 61079456e621c36efec6f4efff6f91faaa0d8c76 /test/Transforms/MemCpyOpt | |
| parent | 0dd80b0d695b94b3baa8ec9195e9b41f3493da4f (diff) | |
| download | llvm-56efe24431b045be120d1fd5f6b0aa43a6b01c48.tar.gz llvm-56efe24431b045be120d1fd5f6b0aa43a6b01c48.tar.bz2 llvm-56efe24431b045be120d1fd5f6b0aa43a6b01c48.tar.xz | |
Atomic load/store handling for the passes using memdep (GVN, DSE, memcpyopt).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137888 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/MemCpyOpt')
| -rw-r--r-- | test/Transforms/MemCpyOpt/atomic.ll | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/test/Transforms/MemCpyOpt/atomic.ll b/test/Transforms/MemCpyOpt/atomic.ll new file mode 100644 index 0000000000..f351e6792e --- /dev/null +++ b/test/Transforms/MemCpyOpt/atomic.ll @@ -0,0 +1,41 @@ +; RUN: opt -basicaa -memcpyopt -S < %s | FileCheck %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" +target triple = "x86_64-apple-macosx10.7.0" + +@x = global i32 0 + +declare void @otherf(i32*) + +declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind + +; memcpyopt should not touch atomic ops +define void @test1() nounwind uwtable ssp { +; CHECK: test1 +; CHECK: store atomic + %x = alloca [101 x i32], align 16 + %bc = bitcast [101 x i32]* %x to i8* + call void @llvm.memset.p0i8.i64(i8* %bc, i8 0, i64 400, i32 16, i1 false) + %gep1 = getelementptr inbounds [101 x i32]* %x, i32 0, i32 100 + store atomic i32 0, i32* %gep1 unordered, align 4 + %gep2 = getelementptr inbounds [101 x i32]* %x, i32 0, i32 0 + call void @otherf(i32* %gep2) + ret void +} + +; memcpyopt across unordered store +define void @test2() nounwind uwtable ssp { +; CHECK: test2 +; CHECK: call +; CHECK-NEXT: store atomic +; CHECK-NEXT: call + %old = alloca i32 + %new = alloca i32 + call void @otherf(i32* nocapture %old) + store atomic i32 0, i32* @x unordered, align 4 + %v = load i32* %old + store i32 %v, i32* %new + call void @otherf(i32* nocapture %new) + ret void +} + |