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| author | Jan Hubicka <hubicka@ucw.cz> | 2015-04-13 16:13:06 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2015-04-13 14:13:06 +0000 |
| commit | 95d81ba561d69d63c65ac00c059555ce33d6e77a (patch) | |
| tree | 74982fec36d08d32de9a64445a9832adb8ee9bf9 /gcc | |
| parent | 9586973b6089e2a7782b83bd7457170ed7082ad4 (diff) | |
| download | gcc-95d81ba561d69d63c65ac00c059555ce33d6e77a.zip gcc-95d81ba561d69d63c65ac00c059555ce33d6e77a.tar.gz gcc-95d81ba561d69d63c65ac00c059555ce33d6e77a.tar.bz2 | |
ipa-profie.c (ipa_profile): Check number of parameters and possible polymorphic call targets before...
* ipa-profie.c (ipa_profile): Check number of parameters
and possible polymorphic call targets before
devirtualizing.
From-SVN: r222053
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/ipa-profile.c | 30 |
2 files changed, 36 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e846816..9dcdea6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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 diff --git a/gcc/ipa-profile.c b/gcc/ipa-profile.c index 0929877..e9f937f 100644 --- a/gcc/ipa-profile.c +++ b/gcc/ipa-profile.c @@ -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); |