[PATCH, libgcc]: Use __builtin_expect when checking for soft-fp exceptions

[Uros Bizjak]

Hello!

2012-06-17  Uros Bizjak  <ubiz...@gmail.com>

        * config/i386/sfp-machine.h (FP_HANDLE_EXCEPTIONS): Use
        __builtin_expect when checking for exceptions.
        * config/ia64/sfp-machine.h (FP_HANDLE_EXCEPTIONS): Ditto.

Tested on x86_64-pc-linux-gnu {,-m32} and ia64-unknown-linux-gnu,
committed to mainline SVN.

Uros.

Index: config/ia64/sfp-machine.h
===================================================================
--- config/ia64/sfp-machine.h   (revision 188696)
+++ config/ia64/sfp-machine.h   (working copy)
@@ -60,7 +60,7 @@
 
 #define FP_HANDLE_EXCEPTIONS                   \
   do {                                         \
-    if (_fex)                                  \
+    if (__builtin_expect (_fex, 0))            \
       __sfp_handle_exceptions (_fex);          \
   } while (0);
 
Index: config/i386/sfp-machine.h
===================================================================
--- config/i386/sfp-machine.h   (revision 188696)
+++ config/i386/sfp-machine.h   (working copy)
@@ -51,7 +51,7 @@
 
 #define FP_HANDLE_EXCEPTIONS                   \
   do {                                         \
-    if (_fex)                                  \
+    if (__builtin_expect (_fex, 0))            \
       __sfp_handle_exceptions (_fex);          \
   } while (0);