2009-05-06 Javier Miranda <miranda@adacore.com>

[pf3gnuchains/gcc-fork.git] / gcc / real.h

diff --git a/gcc/real.h b/gcc/real.h
index 44e79c3..47efac5 100644 (file)
--- a/gcc/real.h
+++ b/gcc/real.h
@@ -43,8 +43,7 @@ enum real_value_class {
 #define SIGSZ                  (SIGNIFICAND_BITS / HOST_BITS_PER_LONG)
 #define SIG_MSB                        ((unsigned long)1 << (HOST_BITS_PER_LONG - 1))
 
-struct real_value GTY(())
-{
+struct GTY(()) real_value {
   /* Use the same underlying type for all bit-fields, so as to make
      sure they're packed together, otherwise REAL_VALUE_TYPE_SIZE will
      be miscomputed.  */
@@ -438,6 +437,11 @@ extern rtx const_double_from_real_value (REAL_VALUE_TYPE, enum machine_mode);
 /* Replace R by 1/R in the given machine mode, if the result is exact.  */
 extern bool exact_real_inverse (enum machine_mode, REAL_VALUE_TYPE *);
 
+/* Return true if arithmetic on values in IMODE that were promoted
+   from values in TMODE is equivalent to direct arithmetic on values
+   in TMODE.  */
+bool real_can_shorten_arithmetic (enum machine_mode, enum machine_mode);
+
 /* In tree.c: wrap up a REAL_VALUE_TYPE in a tree node.  */
 extern tree build_real (tree, REAL_VALUE_TYPE);