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Update the comments for ComputeMaskedBits, which lost its Mask parameter

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in r154011.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208757 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jay Foad
2014-05-14 08:00:07 +00:00
parent b8236e532a
commit 5fa4d1cd1a
4 changed files with 9 additions and 12 deletions
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lib/Analysis/ValueTracking.cpp
+2 -2
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@@ -211,7 +211,7 @@ void llvm::computeMaskedBitsLoad(const MDNode &Ranges, APInt &KnownZero) {
KnownZero = APInt::getHighBitsSet(BitWidth, MinLeadingZeros);
}
/// ComputeMaskedBits - Determine which of the bits are known to be either zero
/// ComputeMaskedBits - Determine which bits of V are known to be either zero
/// or one and return them in the KnownZero/KnownOne bit sets.
///
/// NOTE: we cannot consider 'undef' to be "IsZero" here. The problem is that
@@ -241,7 +241,7 @@ void llvm::ComputeMaskedBits(Value *V, APInt &KnownZero, APInt &KnownOne,
V->getType()->getScalarSizeInBits() == BitWidth) &&
KnownZero.getBitWidth() == BitWidth &&
KnownOne.getBitWidth() == BitWidth &&
"V, Mask, KnownOne and KnownZero should have same BitWidth");
"V, KnownOne and KnownZero should have same BitWidth");
if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
// We know all of the bits for a constant!