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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 | bc4457e31750565283f47c66ae1e44dba8362996 (patch) | |
| tree | 694e2b6bfd4c3868d9eb404aa728f8319cf9b8d4 /llvm/test/Transforms/MemCpyOpt/memcpy.ll | |
| parent | fd51c52ef6b9ad28b271ca27cf6ae24075a838d9 (diff) | |
| download | bcm5719-llvm-bc4457e31750565283f47c66ae1e44dba8362996.tar.gz bcm5719-llvm-bc4457e31750565283f47c66ae1e44dba8362996.zip | |
enhance memcpyopt to zap memcpy's that have the same src/dst.
llvm-svn: 121362
Diffstat (limited to 'llvm/test/Transforms/MemCpyOpt/memcpy.ll')
| -rw-r--r-- | llvm/test/Transforms/MemCpyOpt/memcpy.ll | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/test/Transforms/MemCpyOpt/memcpy.ll b/llvm/test/Transforms/MemCpyOpt/memcpy.ll index 16b80a628a3..b387d32a7d5 100644 --- a/llvm/test/Transforms/MemCpyOpt/memcpy.ll +++ b/llvm/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 +} + |
