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| author | Devang Patel <dpatel@apple.com> | 2008-08-14 20:58:31 +0000 |
|---|---|---|
| committer | Devang Patel <dpatel@apple.com> | 2008-08-14 20:58:31 +0000 |
| commit | 79ceb4463efc699c8aa1647d4ecbc15bed19e1c9 (patch) | |
| tree | c32e28beb1c4b5af12d1c466f6be2ee3ecef3613 /test/Transforms/LoopStrengthReduce | |
| parent | 9d7f0b76aac3bf0524e9285101e34c15e1e2c599 (diff) | |
If IV is used in a int-to-float cast inside the loop then try to eliminate the cast opeation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54786 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/LoopStrengthReduce')
| -rw-r--r-- | test/Transforms/LoopStrengthReduce/2008-08-14-ShadowIV.ll | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/2008-08-14-ShadowIV.ll b/test/Transforms/LoopStrengthReduce/2008-08-14-ShadowIV.ll new file mode 100644 index 0000000000..681c9be167 --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/2008-08-14-ShadowIV.ll @@ -0,0 +1,27 @@ +; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | grep "phi double" + +define void @foobar(i32 %n) nounwind { +entry: + icmp eq i32 %n, 0 ; <i1>:0 [#uses=2] + br i1 %0, label %return, label %bb.nph + +bb.nph: ; preds = %entry + %umax = select i1 %0, i32 1, i32 %n ; <i32> [#uses=1] + br label %bb + +bb: ; preds = %bb, %bb.nph + %i.03 = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb ] ; <i32> [#uses=3] + tail call void @bar( i32 %i.03 ) nounwind + uitofp i32 %i.03 to double ; <double>:1 [#uses=1] + tail call void @foo( double %1 ) nounwind + %indvar.next = add i32 %i.03, 1 ; <i32> [#uses=2] + %exitcond = icmp eq i32 %indvar.next, %umax ; <i1> [#uses=1] + br i1 %exitcond, label %return, label %bb + +return: ; preds = %bb, %entry + ret void +} + +declare void @bar(i32) + +declare void @foo(double) |