except.c (sjlj_mark_call_sites): Do not search for assignments to non-argumment…

except.c (sjlj_mark_call_sites): Do not search for assignments to non-argumment registers that are mentioned in...

        * except.c (sjlj_mark_call_sites): Do not search for assignments to
        non-argumment registers that are mentioned in CALL_INSN_FUNCTION_USAGE.

From-SVN: r41896

gcc/ChangeLog

 Mon May  7 09:30:14 2001  Jeffrey A Law  (law@cygnus.com)
 
+	* except.c (sjlj_mark_call_sites): Do not search for assignments to
+	non-argumment registers that are mentioned in CALL_INSN_FUNCTION_USAGE.
+
 	* pa.h (MAX_LONG_TYPE_SIZE): Should be 32, not 64.
 	* pa-64.h (*_TYPE_SIZE): Undefine before redefining.
 

gcc/except.c

@@ -2087,6 +2087,11 @@ sjlj_mark_call_sites (lp_info)
 		if (REGNO (XEXP (XEXP (p, 0), 0)) >= FIRST_PSEUDO_REGISTER)
 		  abort ();
 
+		/* We only care about registers which can hold function
+		   arguments.  */
+		if (! FUNCTION_ARG_REGNO_P (REGNO (XEXP (XEXP (p, 0), 0))))
+		  continue;
+
 		SET_HARD_REG_BIT (parm_regs, REGNO (XEXP (XEXP (p, 0), 0)));
 		nparm_regs++;
 	      }