Move non-trivial methods out of line to avoid code-size bloat.

llvm-svn: 55138

1 files changed, 92 insertions, 0 deletions

diff --git a/llvm/lib/Support/raw_ostream.cpp b/llvm/lib/Support/raw_ostream.cpp
index 39686cbcc6a..b1209a2da73 100644
--- a/llvm/lib/Support/raw_ostream.cpp
+++ b/llvm/lib/Support/raw_ostream.cpp
@@ -33,6 +33,98 @@ using namespace llvm;
 // An out of line virtual method to provide a home for the class vtable.
 void raw_ostream::handle() {}
 
+raw_ostream &raw_ostream::operator<<(unsigned long N) {
+  // Zero is a special case.
+  if (N == 0)
+    return *this << '0';
+  
+  char NumberBuffer[20];
+  char *EndPtr = NumberBuffer+sizeof(NumberBuffer);
+  char *CurPtr = EndPtr;
+  
+  while (N) {
+    *--CurPtr = '0' + char(N % 10);
+    N /= 10;
+  }
+  return write(CurPtr, EndPtr-CurPtr);
+}
+
+raw_ostream &raw_ostream::operator<<(long N) {
+  if (N <  0) {
+    if (OutBufCur >= OutBufEnd)
+      flush_impl();
+    *OutBufCur++ = '-';
+    
+    N = -N;
+  }
+  
+  return this->operator<<(static_cast<unsigned long>(N));
+}
+
+raw_ostream &raw_ostream::operator<<(unsigned long long N) {
+  // Zero is a special case.
+  if (N == 0)
+    return *this << '0';
+  
+  char NumberBuffer[20];
+  char *EndPtr = NumberBuffer+sizeof(NumberBuffer);
+  char *CurPtr = EndPtr;
+  
+  while (N) {
+    *--CurPtr = '0' + char(N % 10);
+    N /= 10;
+  }
+  return write(CurPtr, EndPtr-CurPtr);
+}
+
+raw_ostream &raw_ostream::operator<<(long long N) {
+  if (N <  0) {
+    if (OutBufCur >= OutBufEnd)
+      flush_impl();
+    *OutBufCur++ = '-';
+    
+    N = -N;
+  }
+  
+  return this->operator<<(static_cast<unsigned long long>(N));
+}
+
+raw_ostream &raw_ostream::write(const char *Ptr, unsigned Size) {
+  if (OutBufCur+Size > OutBufEnd)
+    flush_impl();
+  
+  // Handle short strings specially, memcpy isn't very good at very short
+  // strings.
+  switch (Size) {
+  case 4: OutBufCur[3] = Ptr[3]; // FALL THROUGH
+  case 3: OutBufCur[2] = Ptr[2]; // FALL THROUGH
+  case 2: OutBufCur[1] = Ptr[1]; // FALL THROUGH
+  case 1: OutBufCur[0] = Ptr[0]; // FALL THROUGH
+  case 0: break;
+  default:
+    // Normally the string to emit is shorter than the buffer.
+    if (Size <= unsigned(OutBufEnd-OutBufStart)) {
+      memcpy(OutBufCur, Ptr, Size);
+      break;
+    }
+
+    // If emitting a string larger than our buffer, emit in chunks.  In this
+    // case we know that we just flushed the buffer.
+    while (Size) {
+      unsigned NumToEmit = OutBufEnd-OutBufStart;
+      if (Size < NumToEmit) NumToEmit = Size;
+      assert(OutBufCur == OutBufStart);
+      memcpy(OutBufStart, Ptr, NumToEmit);
+      Ptr += NumToEmit;
+      OutBufCur = OutBufStart + NumToEmit;
+      flush_impl();
+    }
+    break;
+  }
+  OutBufCur += Size;
+  return *this;
+}
+
 //===----------------------------------------------------------------------===//
 //  raw_fd_ostream
 //===----------------------------------------------------------------------===//