sh.h (OPTIMIZATION_OPTIONS): Set flag_schedule_insns to 2 if it's already non-zero.

	* config/sh/sh.h (OPTIMIZATION_OPTIONS): Set flag_schedule_insns
	to 2 if it's already non-zero.
	(OVERRIDE_OPTIONS): Clear flag_schedule_insns if flag_exceptions
	is set and warn about it if flag_schedule_insns is 1.

From-SVN: r105496

gcc/ChangeLog

+2005-10-17  Kaz Kojima  <kkojima@gcc.gnu.org>
+
+	* config/sh/sh.h (OPTIMIZATION_OPTIONS): Set flag_schedule_insns
+	to 2 if it's already non-zero.
+	(OVERRIDE_OPTIONS): Clear flag_schedule_insns if flag_exceptions
+	is set and warn about it if flag_schedule_insns is 1.
+
 2005-10-17  Paul Woegerer  <paul.woegerer@nsc.com>
 
 	* config/crx/crx.md: Compare-and-branch instructions need to

gcc/config/sh/sh.h

@@ -486,6 +486,10 @@ do {									\
     flag_finite_math_only.  We set it to 2 here so we know if the user	\
     explicitly requested this to be on or off.  */			\
   flag_finite_math_only = 2;						\
+  /* If flag_schedule_insns is 1, we set it to 2 here so we know if	\
+     the user explicitly requested this to be on or off.  */		\
+  if (flag_schedule_insns > 0)						\
+    flag_schedule_insns = 2;						\
 } while (0)
 
 #define ASSEMBLER_DIALECT assembler_dialect
@@ -661,6 +665,17 @@ do {									\
 	 SH3 and lower as they give spill failures for R0.  */		\
       if (!TARGET_HARD_SH4) 						\
         flag_schedule_insns = 0;		 			\
+      /* ??? Current exception handling places basic block boundaries	\
+	 after call_insns.  It causes the high pressure on R0 and gives	\
+	 spill failures for R0 in reload.  See PR 22553 and the thread	\
+	 on gcc-patches							\
+         <http://gcc.gnu.org/ml/gcc-patches/2005-10/msg00816.html>.  */	\
+      else if (flag_exceptions)						\
+	{								\
+	  if (flag_schedule_insns == 1)		 			\
+	    warning (0, "ignoring -fschedule-insns because of exception handling bug");	\
+	  flag_schedule_insns = 0;		 			\
+	}								\
     }									\
 									\
   if (align_loops == 0)							\