From e177c9a9bcd84ca654427b869900c858a9a48e1a Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Wed, 24 Feb 2010 19:31:47 +0000 Subject: [PATCH] ConstantFoldInstOperands can theoretically return null if it didn't fold anything. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97049 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Analysis/ScalarEvolution.cpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index 7fb2e5e7539..5bad4b2972e 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -4226,14 +4226,15 @@ const SCEV *ScalarEvolution::computeSCEVAtScope(const SCEV *V, const Loop *L) { } } - Constant *C; + Constant *C = 0; if (const CmpInst *CI = dyn_cast(I)) C = ConstantFoldCompareInstOperands(CI->getPredicate(), Operands[0], Operands[1], TD); else C = ConstantFoldInstOperands(I->getOpcode(), I->getType(), &Operands[0], Operands.size(), TD); - return getSCEV(C); + if (C) + return getSCEV(C); } } -- 2.34.1