re PR target/19491 (va_start incorrect, Number of floating point and integer…

re PR target/19491 (va_start incorrect, Number of floating point and integer registers counted incorrectly)

2005-01-20  David Edelsohn  <edelsohn@gnu.org>
            Andrew Pinski  <pinskia@physics.uc.edu>

        PR target/19491
        * config/rs6000/rs6000.c (rs6000_va_start): Saturate n_gpr at
        maximum number of GPRs.  Saturate n_fpr at maximum number of FPRs.

Co-Authored-By: Andrew Pinski <pinskia@physics.uc.edu>

From-SVN: r94059

gcc/ChangeLog

+2005-01-20  David Edelsohn  <edelsohn@gnu.org>
+            Andrew Pinski  <pinskia@physics.uc.edu>
+
+	PR target/19491
+	* config/rs6000/rs6000.c (rs6000_va_start): Saturate n_gpr at
+	maximum number of GPRs.  Saturate n_fpr at maximum number of FPRs.
+
 2005-01-22  Ralf Corsepius  <ralf.corsepius@rtems.org>
 
 	* config/rs6000/rtems.h: Update copyright.

gcc/config/rs6000/rs6000.c

@@ -5995,8 +5995,10 @@ rs6000_va_start (tree valist, rtx nextarg)
 
   /* Count number of gp and fp argument registers used.  */
   words = current_function_args_info.words;
-  n_gpr = current_function_args_info.sysv_gregno - GP_ARG_MIN_REG;
-  n_fpr = current_function_args_info.fregno - FP_ARG_MIN_REG;
+  n_gpr = MIN (current_function_args_info.sysv_gregno - GP_ARG_MIN_REG,
+	       GP_ARG_NUM_REG);
+  n_fpr = MIN (current_function_args_info.fregno - FP_ARG_MIN_REG,
+	       FP_ARG_NUM_REG);
 
   if (TARGET_DEBUG_ARG)
     fprintf (stderr, "va_start: words = "HOST_WIDE_INT_PRINT_DEC", n_gpr = "