2003-06-25 Nathan C. Myers <ncm-nospam@cantrip.org>

	* include/bits/streambuf.tcc (sbumpc, sputbackc, sungetc,
	sputc): Move inline, from here...
	* include/std/std_streambuf.h: ... to here.

	* include/std/std_streambuf.h (snextc, sbumpc, sgetc,
	sputbackc, sungetc, sputc): Use __builtin_expect.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@68486 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 2627883..2a494a1 100644 (file)
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,12 @@
+2003-06-25  Nathan C. Myers  <ncm-nospam@cantrip.org>
+
+       * include/bits/streambuf.tcc (sbumpc, sputbackc, sungetc,
+       sputc): Move inline, from here...
+       * include/std/std_streambuf.h: ... to here.
+
+       * include/std/std_streambuf.h (snextc, sbumpc, sgetc,
+       sputbackc, sungetc, sputc): Use __builtin_expect.
+
 2003-06-24  Phil Edwards  <pme@gcc.gnu.org>
 
        * docs/doxygen/mainpage.html:  Use a useful title.

diff --git a/libstdc++-v3/include/bits/streambuf.tcc b/libstdc++-v3/include/bits/streambuf.tcc
index d78d8ea..a16169a 100644 (file)
--- a/libstdc++-v3/include/bits/streambuf.tcc
+++ b/libstdc++-v3/include/bits/streambuf.tcc
@@ -40,72 +40,6 @@
 namespace std 
 {
   template<typename _CharT, typename _Traits>
-    typename basic_streambuf<_CharT, _Traits>::int_type
-    basic_streambuf<_CharT, _Traits>::
-    sbumpc()
-    {
-      int_type __ret;
-      if (this->gptr() < this->egptr())
-       {
-         __ret = traits_type::to_int_type(*this->gptr());
-         this->gbump(1);
-       }
-      else 
-       __ret = this->uflow();
-      return __ret;
-    }
-
-  template<typename _CharT, typename _Traits>
-    typename basic_streambuf<_CharT, _Traits>::int_type
-    basic_streambuf<_CharT, _Traits>::
-    sputbackc(char_type __c) 
-    {
-      int_type __ret;
-      const bool __testpos = this->eback() < this->gptr();
-      if (!__testpos || !traits_type::eq(__c, this->gptr()[-1]))
-       __ret = this->pbackfail(traits_type::to_int_type(__c));
-      else 
-       {
-         this->gbump(-1);
-         __ret = traits_type::to_int_type(*this->gptr());
-       }
-      return __ret;
-    }
-  
-  template<typename _CharT, typename _Traits>
-    typename basic_streambuf<_CharT, _Traits>::int_type
-    basic_streambuf<_CharT, _Traits>::
-    sungetc()
-    {
-      int_type __ret;
-      if (this->eback() < this->gptr())
-       {
-         this->gbump(-1);
-         __ret = traits_type::to_int_type(*this->gptr());
-       }
-      else 
-       __ret = this->pbackfail();
-      return __ret;
-    }
-
-  template<typename _CharT, typename _Traits>
-    typename basic_streambuf<_CharT, _Traits>::int_type
-    basic_streambuf<_CharT, _Traits>::
-    sputc(char_type __c)
-    {
-      int_type __ret;
-      if (this->pptr() < this->epptr())
-       {
-         *this->pptr() = __c;
-         this->pbump(1);
-         __ret = traits_type::to_int_type(__c);
-       }
-      else
-       __ret = this->overflow(traits_type::to_int_type(__c));
-      return __ret;
-    }
-
-  template<typename _CharT, typename _Traits>
     streamsize
     basic_streambuf<_CharT, _Traits>::
     xsgetn(char_type* __s, streamsize __n)

diff --git a/libstdc++-v3/include/std/std_streambuf.h b/libstdc++-v3/include/std/std_streambuf.h
index b69de03..bf6aa42 100644 (file)
--- a/libstdc++-v3/include/std/std_streambuf.h
+++ b/libstdc++-v3/include/std/std_streambuf.h
@@ -287,7 +287,8 @@ namespace std
       snextc()
       {
        int_type __ret = traits_type::eof();
-       if (!traits_type::eq_int_type(this->sbumpc(), __ret))
+       if (__builtin_expect(!traits_type::eq_int_type(this->sbumpc(), 
+                                                      __ret), true))
          __ret = this->sgetc();
        return __ret;
       }
@@ -301,7 +302,18 @@ namespace std
        *  @c uflow().
       */
       int_type 
-      sbumpc();
+      sbumpc()
+      {
+       int_type __ret;
+       if (__builtin_expect(this->gptr() < this->egptr(), true))
+         {
+           __ret = traits_type::to_int_type(*this->gptr());
+           this->gbump(1);
+         }
+       else 
+         __ret = this->uflow();
+       return __ret;
+      }
 
       /**
        *  @brief  Getting the next character.
@@ -315,7 +327,7 @@ namespace std
       sgetc()
       {
        int_type __ret;
-       if (this->gptr() < this->egptr())
+       if (__builtin_expect(this->gptr() < this->egptr(), true))
          __ret = traits_type::to_int_type(*this->gptr());
        else 
          __ret = this->underflow();
@@ -345,7 +357,20 @@ namespace std
        *  fetched from the input stream will be @a c.
       */
       int_type 
-      sputbackc(char_type __c);
+      sputbackc(char_type __c)
+      {
+       int_type __ret;
+       const bool __testpos = this->eback() < this->gptr();
+       if (__builtin_expect(!__testpos || 
+                            !traits_type::eq(__c, this->gptr()[-1]), false))
+         __ret = this->pbackfail(traits_type::to_int_type(__c));
+       else 
+         {
+           this->gbump(-1);
+           __ret = traits_type::to_int_type(*this->gptr());
+         }
+       return __ret;
+      }
 
       /**
        *  @brief  Moving backwards in the input stream.
@@ -357,7 +382,18 @@ namespace std
        *  "gotten".
       */
       int_type 
-      sungetc();
+      sungetc()
+      {
+       int_type __ret;
+       if (__builtin_expect(this->eback() < this->gptr(), true))
+         {
+           this->gbump(-1);
+           __ret = traits_type::to_int_type(*this->gptr());
+         }
+       else 
+         __ret = this->pbackfail();
+       return __ret;
+      }
 
       // [27.5.2.2.5] put area
       /**
@@ -373,7 +409,19 @@ namespace std
        *  position is not available, returns @c overflow(c).
       */
       int_type 
-      sputc(char_type __c);
+      sputc(char_type __c)
+      {
+       int_type __ret;
+       if (__builtin_expect(this->pptr() < this->epptr(), true))
+         {
+           *this->pptr() = __c;
+           this->pbump(1);
+           __ret = traits_type::to_int_type(__c);
+         }
+       else
+         __ret = this->overflow(traits_type::to_int_type(__c));
+       return __ret;
+      }
 
       /**
        *  @brief  Entry point for all single-character output functions.