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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/LoopStrengthReduce/related_indvars.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/LoopStrengthReduce/related_indvars.ll')
| -rw-r--r-- | test/Transforms/LoopStrengthReduce/related_indvars.ll | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/related_indvars.ll b/test/Transforms/LoopStrengthReduce/related_indvars.ll new file mode 100644 index 0000000..12942bf --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/related_indvars.ll @@ -0,0 +1,27 @@ +; RUN: opt < %s -loop-reduce -S | grep phi | count 1 + +; This should only result in one PHI node! + +; void foo(double *D, double *E, double F) { +; while (D != E) +; *D++ = F; +; } + +define void @foo(double* %D, double* %E, double %F) nounwind { +entry: + %tmp.24 = icmp eq double* %D, %E ; <i1> [#uses=1] + br i1 %tmp.24, label %return, label %no_exit +no_exit: ; preds = %no_exit, %entry + %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %no_exit ] ; <i32> [#uses=2] + %D_addr.0.0.rec = bitcast i32 %indvar to i32 ; <i32> [#uses=2] + %D_addr.0.0 = getelementptr double* %D, i32 %D_addr.0.0.rec ; <double*> [#uses=1] + %inc.rec = add i32 %D_addr.0.0.rec, 1 ; <i32> [#uses=1] + %inc = getelementptr double* %D, i32 %inc.rec ; <double*> [#uses=1] + store double %F, double* %D_addr.0.0 + %tmp.2 = icmp eq double* %inc, %E ; <i1> [#uses=1] + %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] + br i1 %tmp.2, label %return, label %no_exit +return: ; preds = %no_exit, %entry + ret void +} + |