From d8b4fb4aab4d6fedb2b14bed1b846451b17bde7c Mon Sep 17 00:00:00 2001 From: Jay Foad Date: Wed, 30 Mar 2011 11:19:20 +0000 Subject: (Almost) always call reserveOperandSpace() on newly created PHINodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128535 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Transforms/Scalar/SimplifyCFGPass.cpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'lib/Transforms/Scalar/SimplifyCFGPass.cpp') diff --git a/lib/Transforms/Scalar/SimplifyCFGPass.cpp b/lib/Transforms/Scalar/SimplifyCFGPass.cpp index ce5dd73..e3a9329 100644 --- a/lib/Transforms/Scalar/SimplifyCFGPass.cpp +++ b/lib/Transforms/Scalar/SimplifyCFGPass.cpp @@ -259,11 +259,12 @@ static bool MergeEmptyReturnBlocks(Function &F) { PHINode *RetBlockPHI = dyn_cast(RetBlock->begin()); if (RetBlockPHI == 0) { Value *InVal = cast(RetBlock->getTerminator())->getOperand(0); + pred_iterator PB = pred_begin(RetBlock), PE = pred_end(RetBlock); RetBlockPHI = PHINode::Create(Ret->getOperand(0)->getType(), "merge", &RetBlock->front()); + RetBlockPHI->reserveOperandSpace(std::distance(PB, PE)); - for (pred_iterator PI = pred_begin(RetBlock), E = pred_end(RetBlock); - PI != E; ++PI) + for (pred_iterator PI = PB; PI != PE; ++PI) RetBlockPHI->addIncoming(InVal, *PI); RetBlock->getTerminator()->setOperand(0, RetBlockPHI); } -- cgit v1.1