diff options
Diffstat (limited to 'test/Transforms/MemCpyOpt/memcpy-to-memset.ll')
| -rw-r--r-- | test/Transforms/MemCpyOpt/memcpy-to-memset.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/Transforms/MemCpyOpt/memcpy-to-memset.ll b/test/Transforms/MemCpyOpt/memcpy-to-memset.ll new file mode 100644 index 0000000..b18d176 --- /dev/null +++ b/test/Transforms/MemCpyOpt/memcpy-to-memset.ll @@ -0,0 +1,19 @@ +; RUN: opt -memcpyopt -S < %s | FileCheck %s + +@cst = internal constant [3 x i32] [i32 -1, i32 -1, i32 -1], align 4 + +declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind +declare void @foo(i32*) nounwind + +define void @test1() nounwind { + %arr = alloca [3 x i32], align 4 + %arr_i8 = bitcast [3 x i32]* %arr to i8* + call void @llvm.memcpy.p0i8.p0i8.i64(i8* %arr_i8, i8* bitcast ([3 x i32]* @cst to i8*), i64 12, i32 4, i1 false) + %arraydecay = getelementptr inbounds [3 x i32]* %arr, i64 0, i64 0 + call void @foo(i32* %arraydecay) nounwind + ret void +; CHECK: @test1 +; CHECK: call void @llvm.memset +; CHECK-NOT: call void @llvm.memcpy +; CHECK: ret void +} |
