S/390: Perform more aggressive inlining

This patch sets the inlining parameters for z13 and later to rather
aggressive values in response to PR85103 that caused performance
regressions in SPEC2006's sjeng and gobmk benchmarks.

From-SVN: r269623

gcc/ChangeLog

 2019-03-12  Robin Dapp  <rdapp@linux.ibm.com>
 
+	* config/s390/s390.c (s390_option_override_internal): Use more
+	aggressive inlining parameters.
+
+2019-03-12  Robin Dapp  <rdapp@linux.ibm.com>
+
 	* config/s390/3906.md: New file.
 	* config/s390/s390.c (MAX_SCHED_UNITS): Increase.
 	(LONGRUNNING_THRESHOLD): Remove.

gcc/config/s390/s390.c

@@ -15072,6 +15072,18 @@ s390_option_override_internal (struct gcc_options *opts,
 			 opts->x_param_values,
 			 opts_set->x_param_values);
 
+  /* Use aggressive inlining parameters.  */
+  if (opts->x_s390_tune >= PROCESSOR_2964_Z13)
+    {
+      maybe_set_param_value (PARAM_INLINE_MIN_SPEEDUP, 2,
+			     opts->x_param_values,
+			     opts_set->x_param_values);
+
+      maybe_set_param_value (PARAM_MAX_INLINE_INSNS_AUTO, 80,
+			     opts->x_param_values,
+			     opts_set->x_param_values);
+    }
+
   /* Set the default alignment.  */
   s390_default_align (opts);