From fb7d35f22a958747dd3ae8861ae3ce018146131c Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Sat, 2 May 2009 17:43:35 +0000 Subject: When ScalarEvolution is told to forget the trip count for a loop, have it also forget any SCEVs associated with loop-header PHIs in the loop, as they may be dependent on trip count information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70633 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/Analysis/ScalarEvolution.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') diff --git a/include/llvm/Analysis/ScalarEvolution.h b/include/llvm/Analysis/ScalarEvolution.h index 6ef0b35..a0a7c1e 100644 --- a/include/llvm/Analysis/ScalarEvolution.h +++ b/include/llvm/Analysis/ScalarEvolution.h @@ -333,6 +333,11 @@ namespace llvm { /// expression cannot be evaluated, return UnknownValue itself. SCEVHandle getSCEVAtScope(SCEV *S, const Loop *L); + /// forgetLoopPHIs - Delete the memoized SCEVs associated with the + /// PHI nodes in the given loop. This is used when the trip count of + /// the loop may have changed. + void forgetLoopPHIs(const Loop *L); + public: static char ID; // Pass identification, replacement for typeid ScalarEvolution(); -- cgit v1.1