Add slow path for single character write, and use exclusively for

single characters writes outside of the fast path in raw_ostream.h


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67053 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 3 deletions

diff --git a/include/llvm/Support/raw_ostream.h b/include/llvm/Support/raw_ostream.h
index 1eb92ed..8574659 100644
--- a/include/llvm/Support/raw_ostream.h
+++ b/include/llvm/Support/raw_ostream.h
@@ -82,7 +82,7 @@ public:
 
   raw_ostream &operator<<(char C) {
     if (OutBufCur >= OutBufEnd)
-      flush_impl();
+      return write(C);
     *OutBufCur++ = C;
     if (Unbuffered)
       flush_impl();
@@ -91,7 +91,7 @@ public:
 
   raw_ostream &operator<<(unsigned char C) {
     if (OutBufCur >= OutBufEnd)
-      flush_impl();
+      return write(C);
     *OutBufCur++ = C;
     if (Unbuffered)
       flush_impl();
@@ -100,7 +100,7 @@ public:
 
   raw_ostream &operator<<(signed char C) {
     if (OutBufCur >= OutBufEnd)
-      flush_impl();
+      return write(C);
     *OutBufCur++ = C;
     if (Unbuffered)
       flush_impl();
@@ -132,6 +132,7 @@ public:
     return this->operator<<(ftostr(N));
   }
 
+  raw_ostream &write(unsigned char C);
   raw_ostream &write(const char *Ptr, unsigned Size);
 
   // Formatted output, see the format() function in Support/Format.h.