* ia64-protos.h (addp4_optimize_ok): New.

[pf3gnuchains/gcc-fork.git] / gcc / config / ia64 / ia64.c

diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index bbcd90d..3f867b5 100644 (file)
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -48,6 +48,7 @@ Boston, MA 02111-1307, USA.  */
 #include "target-def.h"
 #include "tm_p.h"
 #include "hashtab.h"
+#include "langhooks.h"
 
 /* This is used for communication between ASM_OUTPUT_LABEL and
    ASM_OUTPUT_LABELREF.  */
@@ -1075,6 +1076,21 @@ ia64_move_ok (dst, src)
     return GET_CODE (src) == CONST_DOUBLE && CONST_DOUBLE_OK_FOR_G (src);
 }
 
+/* Return 0 if we are doing C++ code.  This optimization fails with
+   C++ because of GNAT c++/6685.  */
+
+int
+addp4_optimize_ok (op1, op2)
+     rtx op1, op2;
+{
+
+  if (!strcmp (lang_hooks.name, "GNU C++"))
+    return 0;
+
+  return (basereg_operand (op1, GET_MODE(op1)) !=
+         basereg_operand (op2, GET_MODE(op2)));
+}
+
 /* Check if OP is a mask suitable for use with SHIFT in a dep.z instruction.
    Return the length of the field, or <= 0 on failure.  */