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| author | Chris Lattner <sabre@nondot.org> | 2010-12-09 07:45:45 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-12-09 07:45:45 +0000 |
| commit | 8fdca6a8738c1ad7091137688ee48c9e623b75bb (patch) | |
| tree | dd602005f72a1c2d1c9011431295da866fe3d7cc /test/Transforms/MemCpyOpt | |
| parent | f7f35467a9aac818bd5813c17e80d7efb66dadd7 (diff) | |
| download | llvm-8fdca6a8738c1ad7091137688ee48c9e623b75bb.tar.gz llvm-8fdca6a8738c1ad7091137688ee48c9e623b75bb.tar.bz2 llvm-8fdca6a8738c1ad7091137688ee48c9e623b75bb.tar.xz | |
enhance memcpyopt to zap memcpy's that have the same src/dst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121362 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/MemCpyOpt')
| -rw-r--r-- | test/Transforms/MemCpyOpt/memcpy.ll | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/Transforms/MemCpyOpt/memcpy.ll b/test/Transforms/MemCpyOpt/memcpy.ll index 16b80a628a..b387d32a7d 100644 --- a/test/Transforms/MemCpyOpt/memcpy.ll +++ b/test/Transforms/MemCpyOpt/memcpy.ll @@ -100,3 +100,12 @@ entry: ; CHECK: store i8 4 ; CHECK: call void @test5a(%struct.S* byval align 16 %y) } + +;; Noop memcpy should be zapped. +define void @test6(i8 *%P) { + call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %P, i64 8, i32 4, i1 false) + ret void +; CHECK: @test6 +; CHECK-NEXT: ret void +} + |