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[APInt] Use getNumWords function in udiv/urem/udivrem instead of reimplementinging it.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302625 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper
2017-05-10 07:50:15 +00:00
parent 4d70cb577b
commit 78609efbe9
1 changed files with 6 additions and 12 deletions
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lib/Support/APInt.cpp
+6 -12
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@@ -1578,11 +1578,9 @@ APInt APInt::udiv(const APInt& RHS) const {
}
// Get some facts about the LHS and RHS number of bits and words
unsigned rhsBits = RHS.getActiveBits();
unsigned rhsWords = !rhsBits ? 0 : (APInt::whichWord(rhsBits - 1) + 1);
unsigned rhsWords = getNumWords(RHS.getActiveBits());
assert(rhsWords && "Divided by zero???");
unsigned lhsBits = this->getActiveBits();
unsigned lhsWords = !lhsBits ? 0 : (APInt::whichWord(lhsBits - 1) + 1);
unsigned lhsWords = getNumWords(getActiveBits());
// Deal with some degenerate cases
if (!lhsWords)
@@ -1623,12 +1621,10 @@ APInt APInt::urem(const APInt& RHS) const {
}
// Get some facts about the LHS
unsigned lhsBits = getActiveBits();
unsigned lhsWords = !lhsBits ? 0 : (whichWord(lhsBits - 1) + 1);
unsigned lhsWords = getNumWords(getActiveBits());
// Get some facts about the RHS
unsigned rhsBits = RHS.getActiveBits();
unsigned rhsWords = !rhsBits ? 0 : (APInt::whichWord(rhsBits - 1) + 1);
unsigned rhsWords = getNumWords(RHS.getActiveBits());
assert(rhsWords && "Performing remainder operation by zero ???");
// Check the degenerate cases
@@ -1677,10 +1673,8 @@ void APInt::udivrem(const APInt &LHS, const APInt &RHS,
}
// Get some size facts about the dividend and divisor
unsigned lhsBits = LHS.getActiveBits();
unsigned lhsWords = !lhsBits ? 0 : (APInt::whichWord(lhsBits - 1) + 1);
unsigned rhsBits = RHS.getActiveBits();
unsigned rhsWords = !rhsBits ? 0 : (APInt::whichWord(rhsBits - 1) + 1);
unsigned lhsWords = getNumWords(LHS.getActiveBits());
unsigned rhsWords = getNumWords(RHS.getActiveBits());
// Check the degenerate cases
if (lhsWords == 0) {