diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/predict.c | 44 | ||||
| -rw-r--r-- | gcc/selftest-run-tests.c | 1 | ||||
| -rw-r--r-- | gcc/selftest.h | 1 |
4 files changed, 54 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 285d56a..ded9797 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2017-06-09 Martin Liska <mliska@suse.cz> + + * predict.c (struct branch_predictor): New struct. + (test_prediction_value_range): New test. + (predict_c_tests): New function. + * selftest-run-tests.c (selftest::run_tests): Run the function. + * selftest.h: Declare new tests. + 2017-06-09 Segher Boessenkool <segher@kernel.crashing.org> PR target/80966 diff --git a/gcc/predict.c b/gcc/predict.c index bf93230..ca40068 100644 --- a/gcc/predict.c +++ b/gcc/predict.c @@ -57,6 +57,7 @@ along with GCC; see the file COPYING3. If not see #include "tree-scalar-evolution.h" #include "ipa-utils.h" #include "gimple-pretty-print.h" +#include "selftest.h" /* Enum with reasons why a predictor is ignored. */ @@ -4016,3 +4017,46 @@ force_edge_cold (edge e, bool impossible) impossible ? "impossible" : "cold"); } } + +#if CHECKING_P + +namespace selftest { + +/* Test that value range of predictor values defined in predict.def is + within range (50, 100]. */ + +struct branch_predictor +{ + const char *name; + unsigned probability; +}; + +#define DEF_PREDICTOR(ENUM, NAME, HITRATE, FLAGS) { NAME, HITRATE }, + +static void +test_prediction_value_range () +{ + branch_predictor predictors[] = { +#include "predict.def" + {NULL, -1} + }; + + for (unsigned i = 0; predictors[i].name != NULL; i++) + { + unsigned p = 100 * predictors[i].probability / REG_BR_PROB_BASE; + ASSERT_TRUE (p > 50 && p <= 100); + } +} + +#undef DEF_PREDICTOR + +/* Run all of the selfests within this file. */ + +void +predict_c_tests () +{ + test_prediction_value_range (); +} + +} // namespace selftest +#endif /* CHECKING_P. */ diff --git a/gcc/selftest-run-tests.c b/gcc/selftest-run-tests.c index f62bc72..30e476d 100644 --- a/gcc/selftest-run-tests.c +++ b/gcc/selftest-run-tests.c @@ -92,6 +92,7 @@ selftest::run_tests () targetm.run_target_selftests (); store_merging_c_tests (); + predict_c_tests (); /* Run any lang-specific selftests. */ lang_hooks.run_lang_selftests (); diff --git a/gcc/selftest.h b/gcc/selftest.h index dad53e9..0572fef 100644 --- a/gcc/selftest.h +++ b/gcc/selftest.h @@ -196,6 +196,7 @@ extern void tree_c_tests (); extern void tree_cfg_c_tests (); extern void vec_c_tests (); extern void wide_int_cc_tests (); +extern void predict_c_tests (); extern int num_passes; |