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ipa-profie.c (ipa_profile): Check number of parameters and possible polymorphic call targets before...

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* ipa-profie.c (ipa_profile): Check number of parameters
	and possible polymorphic call targets before
	devirtualizing.

From-SVN: r222053
This commit is contained in:
Jan Hubicka 2015-04-13 16:13:06 +02:00 committed by Jan Hubicka
parent 9586973b60
commit 95d81ba561
2 changed files with 36 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2015-04-12 Jan Hubicka <hubicka@ucw.cz>
* ipa-profie.c (ipa_profile): Check number of parameters
and possible polymorphic call targets before
devirtualizing.
2015-04-13 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.md (*bmi2_umul<mode><dwi>3_1): Merge from

30
gcc/ipa-profile.c
View File

@ -524,6 +524,7 @@ ipa_profile (void)
gcov_type overall_time = 0, cutoff = 0, cumulated = 0, overall_size = 0;
struct cgraph_node *n,*n2;
int nindirect = 0, ncommon = 0, nunknown = 0, nuseless = 0, nconverted = 0;
int nmismatch = 0, nimpossible = 0;
bool node_map_initialized = false;
if (dump_file)
@ -651,6 +652,31 @@ ipa_profile (void)
"Not speculating: target is overwritable "
"and can be discarded.\n");
}
else if (ipa_node_params_sum && ipa_edge_args_vector
&& !IPA_NODE_REF (n2)->descriptors.is_empty ()
&& ipa_get_param_count (IPA_NODE_REF (n2))
!= ipa_get_cs_argument_count (IPA_EDGE_REF (e))
&& (ipa_get_param_count (IPA_NODE_REF (n2))
>= ipa_get_cs_argument_count (IPA_EDGE_REF (e))
|| !stdarg_p (TREE_TYPE (n2->decl))))
{
nmismatch++;
if (dump_file)
fprintf (dump_file,
"Not speculating: "
"parameter count mistmatch\n");
}
else if (e->indirect_info->polymorphic
&& !opt_for_fn (n->decl, flag_devirtualize)
&& !possible_polymorphic_call_target_p (e, n2))
{
nimpossible++;
if (dump_file)
fprintf (dump_file,
"Not speculating: "
"function is not in the polymorphic "
"call target list\n");
}
else
{
/* Target may be overwritable, but profile says that
@ -693,11 +719,15 @@ ipa_profile (void)
"%i indirect calls trained.\n"
"%i (%3.2f%%) have common target.\n"
"%i (%3.2f%%) targets was not found.\n"
"%i (%3.2f%%) targets had parameter count mismatch.\n"
"%i (%3.2f%%) targets was not in polymorphic call target list.\n"
"%i (%3.2f%%) speculations seems useless.\n"
"%i (%3.2f%%) speculations produced.\n",
nindirect,
ncommon, ncommon * 100.0 / nindirect,
nunknown, nunknown * 100.0 / nindirect,
nmismatch, nmismatch * 100.0 / nindirect,
nimpossible, nimpossible * 100.0 / nindirect,
nuseless, nuseless * 100.0 / nindirect,
nconverted, nconverted * 100.0 / nindirect);