m68k.c (m68k_sched_variable_issue): Handle -fsched-pressure.

	* config/m68k/m68k.c (m68k_sched_variable_issue): Handle
	-fsched-pressure.

From-SVN: r172481

gcc/ChangeLog

+2011-04-15  Maxim Kuvyrkov  <maxim@codesourcery.com>
+
+	* config/m68k/m68k.c (m68k_sched_variable_issue): Handle
+	-fsched-pressure.
+
 2011-04-15  Georg-Johann Lay  <avr@gjlay.de>
 	
 	* config/avr/avr.md ("rotl<mode>3",mode=HIDI): Use match_dup

gcc/config/m68k/m68k.c

@@ -6128,7 +6128,14 @@ m68k_sched_variable_issue (FILE *sched_dump ATTRIBUTE_UNUSED,
 	  gcc_unreachable ();
 	}
 
-      gcc_assert (insn_size <= sched_ib.filled);
+      if (insn_size > sched_ib.filled)
+	/* Scheduling for register pressure does not always take DFA into
+	   account.  Workaround instruction buffer not being filled enough.  */
+	{
+	  gcc_assert (sched_pressure_p);
+	  insn_size = sched_ib.filled;
+	}
+
       --can_issue_more;
     }
   else if (GET_CODE (PATTERN (insn)) == ASM_INPUT