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add an assert for safety; NFC

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llvm-svn: 265969
This commit is contained in:
Sanjay Patel 2016-04-11 17:27:44 +00:00
parent 3172549776
commit 86526c47b6
1 changed files with 2 additions and 0 deletions
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2
lib/Transforms/InstCombine/InstCombineShifts.cpp
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@ -61,6 +61,8 @@ static bool canEvaluateShiftedShift(unsigned FirstShiftAmt,
bool IsFirstShiftLeft,
Instruction *SecondShift, InstCombiner &IC,
Instruction *CxtI) {
assert(SecondShift->isLogicalShift() && "Unexpected instruction type");
// We need constant shifts.
auto *SecondShiftConst = dyn_cast<ConstantInt>(SecondShift->getOperand(1));
if (!SecondShiftConst)