diff options
| author | Dan Gohman <gohman@apple.com> | 2010-02-24 19:31:47 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-02-24 19:31:47 +0000 |
| commit | e177c9a9bcd84ca654427b869900c858a9a48e1a (patch) | |
| tree | f4ff49943049193ab2ee9f6d5d18bfdda653c4a2 /lib/Analysis/ScalarEvolution.cpp | |
| parent | 8f767d987f5603b024054095beb75a87a8476757 (diff) | |
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
Diffstat (limited to 'lib/Analysis/ScalarEvolution.cpp')
| -rw-r--r-- | lib/Analysis/ScalarEvolution.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index 7fb2e5e753..5bad4b2972 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<CmpInst>(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); } } |