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| author | Duncan Sands <baldrick@free.fr> | 2008-10-04 13:24:24 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2008-10-04 13:24:24 +0000 |
| commit | 1d650eeaf15bc0c8868c5c312c900bcb9645e014 (patch) | |
| tree | 64fec2d7d3157af9f6595b2bc6e554a543e201b9 /test/Transforms | |
| parent | d96819f779f4b879a383b2b5c53171585149b3d6 (diff) | |
| download | external_llvm-1d650eeaf15bc0c8868c5c312c900bcb9645e014.zip external_llvm-1d650eeaf15bc0c8868c5c312c900bcb9645e014.tar.gz external_llvm-1d650eeaf15bc0c8868c5c312c900bcb9645e014.tar.bz2 | |
Ignore loads from and stores to local memory (i.e. allocas)
when deciding whether to mark a function readnone/readonly.
Since the pass is currently run before SROA, this may be
quite helpful. Requested by Chris on IRC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57050 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/AddReadAttrs/2008-10-04-LocalMemory.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/Transforms/AddReadAttrs/2008-10-04-LocalMemory.ll b/test/Transforms/AddReadAttrs/2008-10-04-LocalMemory.ll new file mode 100644 index 0000000..0f63c1a --- /dev/null +++ b/test/Transforms/AddReadAttrs/2008-10-04-LocalMemory.ll @@ -0,0 +1,10 @@ +; RUN: llvm-as < %s | opt -addreadattrs | llvm-dis | grep readnone | count 2 + +declare i32 @g(i32*) readnone + +define i32 @f() { + %x = alloca i32 ; <i32*> [#uses=2] + store i32 0, i32* %x + %y = call i32 @g(i32* %x) ; <i32> [#uses=1] + ret i32 %y +} |