gcc: another round of merges from the gcc pre-43 branch.

Bring The following revisions from the gcc43 branch[1]:

118360, 118361, 118363, 118576, 119820,
123906, 125246, and 125721.

They all have in common that the were merged long ago
into Apple's gcc and should help improve the general
quality of the compiler and make it easier to bring
new features from Apple's gcc42.

For details please review the additions to the files:
gcc/ChangeLog.gcc43
gcc/cp/ChangeLog.gcc43 (new, adds previous revisions)

Reference:
[1] http://gcc.gnu.org/viewcvs/gcc/trunk/?pathrev=126700

Obtained from:	gcc pre4.3 (GPLv2) branch
MFC after:	3 weeks

1 files changed, 25 insertions, 1 deletions

diff --git a/contrib/gcc/libgcc2.c b/contrib/gcc/libgcc2.c
index 851bdd073c70..58ad32039a4b 100644
--- a/contrib/gcc/libgcc2.c
+++ b/contrib/gcc/libgcc2.c
@@ -492,6 +492,30 @@ __ashrdi3 (DWtype u, word_type b)
 }
 #endif
 
+#ifdef L_bswapsi2
+UWtype
+__bswapsi2 (UWtype u)
+{
+  return ((((u) & 0xff000000) >> 24)
+	  | (((u) & 0x00ff0000) >>  8)
+	  | (((u) & 0x0000ff00) <<  8)
+	  | (((u) & 0x000000ff) << 24));
+}
+#endif
+#ifdef L_bswapdi2
+UDWtype
+__bswapdi2 (UDWtype u)
+{
+  return ((((u) & 0xff00000000000000ull) >> 56)
+	  | (((u) & 0x00ff000000000000ull) >> 40)
+	  | (((u) & 0x0000ff0000000000ull) >> 24)
+	  | (((u) & 0x000000ff00000000ull) >>  8)
+	  | (((u) & 0x00000000ff000000ull) <<  8)
+	  | (((u) & 0x0000000000ff0000ull) << 24)
+	  | (((u) & 0x000000000000ff00ull) << 40)
+	  | (((u) & 0x00000000000000ffull) << 56));
+}
+#endif
 #ifdef L_ffssi2
 #undef int
 int
@@ -1862,7 +1886,7 @@ CONCAT3(__div,MODE,3) (MTYPE a, MTYPE b, MTYPE c, MTYPE d)
 {
   MTYPE denom, ratio, x, y;
 
-  /* ??? We can get better behavior from logarithmic scaling instead of 
+  /* ??? We can get better behavior from logarithmic scaling instead of
      the division.  But that would mean starting to link libgcc against
      libm.  We could implement something akin to ldexp/frexp as gcc builtins
      fairly easily...  */