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Revert 166726 because it may have broken a number of SPEC tests. PR14183.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166739 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem
2012-10-25 23:51:48 +00:00
parent 82149a9106
commit 0636291137
2 changed files with 2 additions and 54 deletions
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5
lib/Analysis/ValueTracking.cpp
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@ -437,9 +437,8 @@ void llvm::ComputeMaskedBits(Value *V, APInt &KnownZero, APInt &KnownOne,
if (SrcTy->isPointerTy())
SrcBitWidth = TD->getTypeSizeInBits(SrcTy);
else
SrcBitWidth = TD->getTypeSizeInBits(SrcTy->getScalarType());
assert(SrcBitWidth && "SrcBitWidth can't be zero");
SrcBitWidth = SrcTy->getScalarSizeInBits();
KnownZero = KnownZero.zextOrTrunc(SrcBitWidth);
KnownOne = KnownOne.zextOrTrunc(SrcBitWidth);
ComputeMaskedBits(I->getOperand(0), KnownZero, KnownOne, TD, Depth+1);