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| author | Duncan Sands <baldrick@free.fr> | 2008-12-31 16:14:43 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2008-12-31 16:14:43 +0000 |
| commit | 9e89ba31f16a960239a750a26a982b4c9dfe8949 (patch) | |
| tree | 4b985f2525e7c6470e7a9d345b5c7eb7ffa889fe /test/Transforms/FunctionAttrs/2008-12-29-Constant.ll | |
| parent | 0c913735c7f66d6bcf0807fac4018a867c3a77e0 (diff) | |
| download | external_llvm-9e89ba31f16a960239a750a26a982b4c9dfe8949.zip external_llvm-9e89ba31f16a960239a750a26a982b4c9dfe8949.tar.gz external_llvm-9e89ba31f16a960239a750a26a982b4c9dfe8949.tar.bz2 | |
Rename AddReadAttrs to FunctionAttrs, and teach it how
to work out (in a very simplistic way) which function
arguments (pointer arguments only) are only dereferenced
and so do not escape. Mark such arguments 'nocapture'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61525 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/FunctionAttrs/2008-12-29-Constant.ll')
| -rw-r--r-- | test/Transforms/FunctionAttrs/2008-12-29-Constant.ll | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/test/Transforms/FunctionAttrs/2008-12-29-Constant.ll b/test/Transforms/FunctionAttrs/2008-12-29-Constant.ll new file mode 100644 index 0000000..d9c0117 --- /dev/null +++ b/test/Transforms/FunctionAttrs/2008-12-29-Constant.ll @@ -0,0 +1,8 @@ +; RUN: llvm-as < %s | opt -functionattrs | llvm-dis | grep readnone + +@s = external constant i8 ; <i8*> [#uses=1] + +define i8 @f() { + %tmp = load i8* @s ; <i8> [#uses=1] + ret i8 %tmp +} |