[APInt] Remove shift functions from APIntOps namespace. Replace the few users with the APInt class methods. NFCI

llvm-svn: 299248

3 files changed, 9 insertions, 30 deletions

diff --git a/llvm/include/llvm/ADT/APInt.h b/llvm/include/llvm/ADT/APInt.h
index b5a5065f1cd..699f429fd3c 100644
--- a/llvm/include/llvm/ADT/APInt.h
+++ b/llvm/include/llvm/ADT/APInt.h
@@ -1984,27 +1984,6 @@ inline APInt RoundFloatToAPInt(float Float, unsigned width) {
   return RoundDoubleToAPInt(double(Float), width);
 }
 
-/// \brief Arithmetic right-shift function.
-///
-/// Arithmetic right-shift the APInt by shiftAmt.
-inline APInt ashr(const APInt &LHS, unsigned shiftAmt) {
-  return LHS.ashr(shiftAmt);
-}
-
-/// \brief Logical right-shift function.
-///
-/// Logical right-shift the APInt by shiftAmt.
-inline APInt lshr(const APInt &LHS, unsigned shiftAmt) {
-  return LHS.lshr(shiftAmt);
-}
-
-/// \brief Left-shift function.
-///
-/// Left-shift the APInt by shiftAmt.
-inline APInt shl(const APInt &LHS, unsigned shiftAmt) {
-  return LHS.shl(shiftAmt);
-}
-
 /// \brief Signed division function for APInt.
 ///
 /// Signed divide APInt LHS by APInt RHS.
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
index 6f043666cef..d4c0e7092ea 100644
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -1120,13 +1120,13 @@ static void computeKnownBitsFromOperator(const Operator *I, APInt &KnownZero,
   case Instruction::LShr: {
     // (ushr X, C1) & C2 == 0   iff  (-1 >> C1) & C2 == 0
     auto KZF = [BitWidth](const APInt &KnownZero, unsigned ShiftAmt) {
-      return APIntOps::lshr(KnownZero, ShiftAmt) |
+      return KnownZero.lshr(ShiftAmt) |
              // High bits known zero.
              APInt::getHighBitsSet(BitWidth, ShiftAmt);
     };
 
     auto KOF = [](const APInt &KnownOne, unsigned ShiftAmt) {
-      return APIntOps::lshr(KnownOne, ShiftAmt);
+      return KnownOne.lshr(ShiftAmt);
     };
 
     computeKnownBitsFromShiftOperator(I, KnownZero, KnownOne,
@@ -1137,11 +1137,11 @@ static void computeKnownBitsFromOperator(const Operator *I, APInt &KnownZero,
   case Instruction::AShr: {
     // (ashr X, C1) & C2 == 0   iff  (-1 >> C1) & C2 == 0
     auto KZF = [](const APInt &KnownZero, unsigned ShiftAmt) {
-      return APIntOps::ashr(KnownZero, ShiftAmt);
+      return KnownZero.ashr(ShiftAmt);
     };
 
     auto KOF = [](const APInt &KnownOne, unsigned ShiftAmt) {
-      return APIntOps::ashr(KnownOne, ShiftAmt);
+      return KnownOne.ashr(ShiftAmt);
     };
 
     computeKnownBitsFromShiftOperator(I, KnownZero, KnownOne,
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
index 09069464bb0..7182576b695 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
@@ -606,8 +606,8 @@ Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask,
                                Depth + 1))
         return I;
       assert(!(KnownZero & KnownOne) && "Bits known to be one AND zero?");
-      KnownZero = APIntOps::lshr(KnownZero, ShiftAmt);
-      KnownOne  = APIntOps::lshr(KnownOne, ShiftAmt);
+      KnownZero = KnownZero.lshr(ShiftAmt);
+      KnownOne  = KnownOne.lshr(ShiftAmt);
       if (ShiftAmt)
         KnownZero.setHighBits(ShiftAmt);  // high bits known zero.
     }
@@ -650,13 +650,13 @@ Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask,
       assert(!(KnownZero & KnownOne) && "Bits known to be one AND zero?");
       // Compute the new bits that are at the top now.
       APInt HighBits(APInt::getHighBitsSet(BitWidth, ShiftAmt));
-      KnownZero = APIntOps::lshr(KnownZero, ShiftAmt);
-      KnownOne  = APIntOps::lshr(KnownOne, ShiftAmt);
+      KnownZero = KnownZero.lshr(ShiftAmt);
+      KnownOne  = KnownOne.lshr(ShiftAmt);
 
       // Handle the sign bits.
       APInt SignBit(APInt::getSignBit(BitWidth));
       // Adjust to where it is now in the mask.
-      SignBit = APIntOps::lshr(SignBit, ShiftAmt);
+      SignBit = SignBit.lshr(ShiftAmt);
 
       // If the input sign bit is known to be zero, or if none of the top bits
       // are demanded, turn this into an unsigned shift right.