vendor/llvm/llvm-trunk-r301939

1 files changed, 15 insertions, 19 deletions

diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp
index 1227d7528c8f..b6c8cbee66df 100644
--- a/lib/Support/APInt.cpp
+++ b/lib/Support/APInt.cpp
@@ -392,13 +392,6 @@ int APInt::compareSigned(const APInt& RHS) const {
   return tcCompare(pVal, RHS.pVal, getNumWords());
 }
 
-void APInt::setBit(unsigned bitPosition) {
-  if (isSingleWord())
-    VAL |= maskBit(bitPosition);
-  else
-    pVal[whichWord(bitPosition)] |= maskBit(bitPosition);
-}
-
 void APInt::setBitsSlowCase(unsigned loBit, unsigned hiBit) {
   unsigned loWord = whichWord(loBit);
   unsigned hiWord = whichWord(hiBit);
@@ -426,15 +419,6 @@ void APInt::setBitsSlowCase(unsigned loBit, unsigned hiBit) {
     pVal[word] = WORD_MAX;
 }
 
-/// Set the given bit to 0 whose position is given as "bitPosition".
-/// @brief Set a given bit to 0.
-void APInt::clearBit(unsigned bitPosition) {
-  if (isSingleWord())
-    VAL &= ~maskBit(bitPosition);
-  else
-    pVal[whichWord(bitPosition)] &= ~maskBit(bitPosition);
-}
-
 /// @brief Toggle every bit to its opposite value.
 void APInt::flipAllBitsSlowCase() {
   tcComplement(pVal, getNumWords());
@@ -625,6 +609,17 @@ APInt APInt::getLoBits(unsigned numBits) const {
   return Result;
 }
 
+/// Return a value containing V broadcasted over NewLen bits.
+APInt APInt::getSplat(unsigned NewLen, const APInt &V) {
+  assert(NewLen >= V.getBitWidth() && "Can't splat to smaller bit width!");
+
+  APInt Val = V.zextOrSelf(NewLen);
+  for (unsigned I = V.getBitWidth(); I < NewLen; I <<= 1)
+    Val |= Val << I;
+
+  return Val;
+}
+
 unsigned APInt::countLeadingZerosSlowCase() const {
   unsigned Count = 0;
   for (int i = getNumWords()-1; i >= 0; --i) {
@@ -844,7 +839,7 @@ APInt llvm::APIntOps::RoundDoubleToAPInt(double Double, unsigned width) {
 
   // Otherwise, we have to shift the mantissa bits up to the right location
   APInt Tmp(width, mantissa);
-  Tmp = Tmp.shl((unsigned)exp - 52);
+  Tmp <<= (unsigned)exp - 52;
   return isNeg ? -Tmp : Tmp;
 }
 
@@ -1072,9 +1067,10 @@ void APInt::lshrSlowCase(unsigned ShiftAmt) {
 
 /// Left-shift this APInt by shiftAmt.
 /// @brief Left-shift function.
-APInt APInt::shl(const APInt &shiftAmt) const {
+APInt &APInt::operator<<=(const APInt &shiftAmt) {
   // It's undefined behavior in C to shift by BitWidth or greater.
-  return shl((unsigned)shiftAmt.getLimitedValue(BitWidth));
+  *this <<= (unsigned)shiftAmt.getLimitedValue(BitWidth);
+  return *this;
 }
 
 void APInt::shlSlowCase(unsigned ShiftAmt) {