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

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3c2499b0946610c9005beab6da4080b6cc60c239..bb58b304eac3ca74bb79d991d6db6b72f7f64fff 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+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.

diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c
index 70a7034c300bb66e9df5977cc6913b85ca46cc7b..41f2665a73a7cad7e7a4d33cd00fc54d042165f2 100644 (file)
--- a/gcc/config/s390/s390.c
+++ b/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);