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Make raw_ostream::operator<<(const void *) fast; it doesn't matter but

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it is easy.

llvm-svn: 67054
This commit is contained in:
Daniel Dunbar 2009-03-16 22:08:44 +00:00
parent c64fdabf4f
commit 5ef319c7d7
1 changed files with 19 additions and 2 deletions
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21
lib/Support/raw_ostream.cpp
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@ -96,8 +96,24 @@ raw_ostream &raw_ostream::operator<<(long long N) {
}
raw_ostream &raw_ostream::operator<<(const void *P) {
// FIXME: This could be much faster if it matters.
return *this << format("%p", P);
uintptr_t N = (uintptr_t) P;
*this << '0' << 'x';
// Zero is a special case.
if (N == 0)
return *this << '0';
char NumberBuffer[20];
char *EndPtr = NumberBuffer+sizeof(NumberBuffer);
char *CurPtr = EndPtr;
while (N) {
unsigned x = N % 16;
*--CurPtr = (x < 10 ? '0' + x : 'a' + x - 10);
N /= 16;
}
return write(CurPtr, EndPtr-CurPtr);
}
raw_ostream &raw_ostream::write(unsigned char C) {
@ -105,6 +121,7 @@ raw_ostream &raw_ostream::write(unsigned char C) {
flush_impl();
*OutBufCur++ = C;
return *this;
}
raw_ostream &raw_ostream::write(const char *Ptr, unsigned Size) {