Update the comments for ComputeMaskedBits, which lost its Mask parameter

in r154011.

llvm-svn: 208757

2 files changed, 4 insertions, 5 deletions

diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
index 07720d78bf0..e684dc86e90 100644
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -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!
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 4bf147730bf..62a2317d34f 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1812,10 +1812,9 @@ bool SelectionDAG::MaskedValueIsZero(SDValue Op, const APInt &Mask,
   return (KnownZero & Mask) == Mask;
 }
 
-/// ComputeMaskedBits - Determine which of the bits specified in Mask are
+/// ComputeMaskedBits - Determine which bits of Op are
 /// known to be either zero or one and return them in the KnownZero/KnownOne
-/// bitsets.  This code only analyzes bits in Mask, in order to short-circuit
-/// processing.
+/// bitsets.
 void SelectionDAG::ComputeMaskedBits(SDValue Op, APInt &KnownZero,
                                      APInt &KnownOne, unsigned Depth) const {
   const TargetLowering *TLI = TM.getTargetLowering();