diff options
| 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/LoopStrengthReduce/dont_reduce_bytes.ll | |
| download | external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.tar.gz external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.tar.bz2 external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.zip | |
Check in LLVM r95781.
Diffstat (limited to 'test/Transforms/LoopStrengthReduce/dont_reduce_bytes.ll')
| -rw-r--r-- | test/Transforms/LoopStrengthReduce/dont_reduce_bytes.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/dont_reduce_bytes.ll b/test/Transforms/LoopStrengthReduce/dont_reduce_bytes.ll new file mode 100644 index 0000000000..20300002eb --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/dont_reduce_bytes.ll @@ -0,0 +1,22 @@ +; Don't reduce the byte access to P[i], at least not on targets that +; support an efficient 'mem[r1+r2]' addressing mode. + +; RUN: opt < %s -loop-reduce -disable-output + + +declare i1 @pred(i32) + +define void @test(i8* %PTR) { +; <label>:0 + br label %Loop +Loop: ; preds = %Loop, %0 + %INDVAR = phi i32 [ 0, %0 ], [ %INDVAR2, %Loop ] ; <i32> [#uses=2] + %STRRED = getelementptr i8* %PTR, i32 %INDVAR ; <i8*> [#uses=1] + store i8 0, i8* %STRRED + %INDVAR2 = add i32 %INDVAR, 1 ; <i32> [#uses=2] + ;; cannot eliminate indvar + %cond = call i1 @pred( i32 %INDVAR2 ) ; <i1> [#uses=1] + br i1 %cond, label %Loop, label %Out +Out: ; preds = %Loop + ret void +} |