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[APInt] Take advantage of new operator*=(uint64_t) to remove a temporary APInt. 

llvm-svn: 302403
This commit is contained in:
Craig Topper 2017-05-08 04:55:12 +00:00
parent a51941f314
commit f15bec5541
1 changed files with 1 additions and 5 deletions
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6
llvm/lib/Support/APInt.cpp
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@ -1842,10 +1842,6 @@ void APInt::fromString(unsigned numbits, StringRef str, uint8_t radix) {
// Figure out if we can shift instead of multiply // Figure out if we can shift instead of multiply
unsigned shift = (radix == 16 ? 4 : radix == 8 ? 3 : radix == 2 ? 1 : 0); unsigned shift = (radix == 16 ? 4 : radix == 8 ? 3 : radix == 2 ? 1 : 0);
// Set up an APInt for the radix multiplier outside the loop so we don't
// constantly construct/destruct it.
APInt apradix(getBitWidth(), radix);
// Enter digit traversal loop // Enter digit traversal loop
for (StringRef::iterator e = str.end(); p != e; ++p) { for (StringRef::iterator e = str.end(); p != e; ++p) {
unsigned digit = getDigit(*p, radix); unsigned digit = getDigit(*p, radix);
@ -1856,7 +1852,7 @@ void APInt::fromString(unsigned numbits, StringRef str, uint8_t radix) {
if (shift) if (shift)
*this <<= shift; *this <<= shift;
else else
*this *= apradix; *this *= radix;
} }
// Add in the digit we just interpreted // Add in the digit we just interpreted