re PR target/63312 (FAIL: gcc.dg/torture/float128-exact-underflow.c -O0 execution test)

	PR target/63312
	* config/ia64/sfp-machine.h (FE_EX_ALL, FP_TRAPPING_EXCEPTIONS):
	New macros.

From-SVN: r215458

libgcc/ChangeLog

+2014-09-22  Joseph Myers  <joseph@codesourcery.com>
+
+	PR target/63312
+	* config/ia64/sfp-machine.h (FE_EX_ALL, FP_TRAPPING_EXCEPTIONS):
+	New macros.
+
 2014-09-22  Hans-Peter Nilsson  <hp@axis.com>
 
 	* crtstuff.c (USE_EH_FRAME_REGISTRY): Let USE_EH_FRAME_REGISTRY_ALWAYS

libgcc/config/ia64/sfp-machine.h

@@ -56,6 +56,9 @@ typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
 #define FP_EX_OVERFLOW		0x08
 #define FP_EX_UNDERFLOW		0x10
 #define FP_EX_INEXACT		0x20
+#define FP_EX_ALL \
+	(FP_EX_INVALID | FP_EX_DENORM | FP_EX_DIVZERO | FP_EX_OVERFLOW \
+	 | FP_EX_UNDERFLOW | FP_EX_INEXACT)
 
 #define _FP_TININESS_AFTER_ROUNDING 1
 
@@ -67,6 +70,8 @@ void __sfp_handle_exceptions (int);
       __sfp_handle_exceptions (_fex);		\
   } while (0);
 
+#define FP_TRAPPING_EXCEPTIONS	(~_fcw & FP_EX_ALL)
+
 #define FP_RND_NEAREST		0
 #define FP_RND_ZERO		0xc00L
 #define FP_RND_PINF		0x800L