From 5272f3c669c7a2d43dd4796aded314ecc00c66b8 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Mon, 8 Aug 2005 05:47:49 +0000 Subject: [PATCH] Implement LoopStrengthReduce/share_code_in_preheader.ll by having one rewriter for all code inserted into the preheader, which is never flushed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22702 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Transforms/Scalar/LoopStrengthReduce.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp index cf974b8876e..f11976fe879 100644 --- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp @@ -542,6 +542,8 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(Value *Stride, } SCEVExpander Rewriter(*SE, *LI); + SCEVExpander PreheaderRewriter(*SE, *LI); + BasicBlock *Preheader = L->getLoopPreheader(); Instruction *PreInsertPt = Preheader->getTerminator(); Instruction *PhiInsertBefore = L->getHeader()->begin(); @@ -578,7 +580,8 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(Value *Stride, // Emit the initial base value into the loop preheader, and add it to the // Phi node. - Value *BaseV = Rewriter.expandCodeFor(Base, PreInsertPt, ReplacedTy); + Value *BaseV = PreheaderRewriter.expandCodeFor(Base, PreInsertPt, + ReplacedTy); NewPHI->addIncoming(BaseV, Preheader); // Emit the increment of the base value before the terminator of the loop