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| author | Dan Gohman <gohman@apple.com> | 2007-08-27 16:26:13 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2007-08-27 16:26:13 +0000 |
| commit | 5f43f92c69aae9837064cf08291db1b36a82789f (patch) | |
| tree | 26231252b664c1aa83d6b5c0b55b0418d495ac30 /test/CodeGen/X86/memmove-0.ll | |
| parent | e3784951af0c2ddc6447805b321db222689aa1d2 (diff) | |
| download | external_llvm-5f43f92c69aae9837064cf08291db1b36a82789f.zip external_llvm-5f43f92c69aae9837064cf08291db1b36a82789f.tar.gz external_llvm-5f43f92c69aae9837064cf08291db1b36a82789f.tar.bz2 | |
If the source and destination pointers in an llvm.memmove are known
to not alias each other, it can be translated as an llvm.memcpy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41489 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/memmove-0.ll')
| -rw-r--r-- | test/CodeGen/X86/memmove-0.ll | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/CodeGen/X86/memmove-0.ll b/test/CodeGen/X86/memmove-0.ll new file mode 100644 index 0000000..4632aaa --- /dev/null +++ b/test/CodeGen/X86/memmove-0.ll @@ -0,0 +1,9 @@ +; RUN: llvm-as < %s | llc -march=x86 | grep {call memcpy} + +declare void @llvm.memmove.i64(i8* %d, i8* %s, i64 %l, i32 %a) + +define void @foo(i8* noalias %d, i8* noalias %s, i64 %l) +{ + call void @llvm.memmove.i64(i8* %d, i8* %s, i64 %l, i32 1) + ret void +} |