In gcc4-8, the max einline iterations are restricted to 1. For
AutoFDO, this is bad because early inline is not size restricted. This
patch allows einline to do multiple iterations in AutoFDO. It also
enables tracer optimization in AutoFDO.
Bootstrapped and passed regression test.
OK for googel-4_8?
Thanks,
Dehao
Index: gcc/ipa-inline.c
===================================================================
--- gcc/ipa-inline.c (revision 199416)
+++ gcc/ipa-inline.c (working copy)
@@ -2161,7 +2161,8 @@ early_inliner (void)
{
/* We iterate incremental inlining to get trivial cases of indirect
inlining. */
- while (iterations < PARAM_VALUE (PARAM_EARLY_INLINER_MAX_ITERATIONS)
+ while ((flag_auto_profile
+ || iterations < PARAM_VALUE (PARAM_EARLY_INLINER_MAX_ITERATIONS))
&& early_inline_small_functions (node))
{
timevar_push (TV_INTEGRATION);
Index: gcc/opts.c
===================================================================
--- gcc/opts.c (revision 199416)
+++ gcc/opts.c (working copy)
@@ -1644,6 +1644,8 @@ common_handle_option (struct gcc_options *opts,
opts->x_flag_peel_loops = value;
if (!opts_set->x_flag_value_profile_transformations)
opts->x_flag_value_profile_transformations = value;
+ if (!opts_set->x_flag_tracer)
+ opts->x_flag_tracer = value;
if (!opts_set->x_flag_inline_functions)
opts->x_flag_inline_functions = value;
if (!opts_set->x_flag_ipa_cp)
