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| author | Shih-wei Liao <sliao@google.com> | 2010-02-10 11:10:31 -0800 |
|---|---|---|
| committer | Shih-wei Liao <sliao@google.com> | 2010-02-10 11:10:31 -0800 |
| commit | e264f62ca09a8f65c87a46d562a4d0f9ec5d457e (patch) | |
| tree | 59e3d57ef656cef79afa708ae0a3daf25cd91fcf /test/Transforms/Reassociate/2002-05-15-SubReassociate2.ll | |
| download | external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.zip external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.tar.gz external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.tar.bz2 | |
Check in LLVM r95781.
Diffstat (limited to 'test/Transforms/Reassociate/2002-05-15-SubReassociate2.ll')
| -rw-r--r-- | test/Transforms/Reassociate/2002-05-15-SubReassociate2.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/Transforms/Reassociate/2002-05-15-SubReassociate2.ll b/test/Transforms/Reassociate/2002-05-15-SubReassociate2.ll new file mode 100644 index 0000000..5848821 --- /dev/null +++ b/test/Transforms/Reassociate/2002-05-15-SubReassociate2.ll @@ -0,0 +1,13 @@ +; With sub reassociation, constant folding can eliminate the two 12 constants. +; +; RUN: opt < %s -reassociate -constprop -dce -S | not grep 12 + +define i32 @test(i32 %A, i32 %B, i32 %C, i32 %D) { + %M = add i32 %A, 12 ; <i32> [#uses=1] + %N = add i32 %M, %B ; <i32> [#uses=1] + %O = add i32 %N, %C ; <i32> [#uses=1] + %P = sub i32 %D, %O ; <i32> [#uses=1] + %Q = add i32 %P, 12 ; <i32> [#uses=1] + ret i32 %Q +} + |