diff options
Diffstat (limited to 'gcc/value-prof.c')
| -rw-r--r-- | gcc/value-prof.c | 94 |
1 files changed, 84 insertions, 10 deletions
diff --git a/gcc/value-prof.c b/gcc/value-prof.c index 7be8db4f897..66b5c6589bd 100644 --- a/gcc/value-prof.c +++ b/gcc/value-prof.c @@ -34,6 +34,8 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #include "optabs.h" #include "regs.h" +static struct value_prof_hooks *value_prof_hooks; + /* In this file value profile based optimizations will be placed (none are here just now, but they are hopefully coming soon). @@ -174,12 +176,14 @@ insn_values_to_profile (rtx insn, } /* Find list of values for that we want to measure histograms. */ -void -find_values_to_profile (unsigned *n_values, struct histogram_value **values) +static void +rtl_find_values_to_profile (unsigned *n_values, struct histogram_value **values) { rtx insn; unsigned i; + life_analysis (get_insns (), NULL, PROP_DEATH_NOTES); + *n_values = 0; *values = NULL; for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) @@ -193,7 +197,7 @@ find_values_to_profile (unsigned *n_values, struct histogram_value **values) if (dump_file) fprintf (dump_file, "Interval counter for insn %d, range %d -- %d.\n", - INSN_UID ((*values)[i].insn), + INSN_UID ((rtx)(*values)[i].insn), (*values)[i].hdata.intvl.int_start, ((*values)[i].hdata.intvl.int_start + (*values)[i].hdata.intvl.steps - 1)); @@ -206,16 +210,17 @@ find_values_to_profile (unsigned *n_values, struct histogram_value **values) if (dump_file) fprintf (dump_file, "Pow2 counter for insn %d.\n", - INSN_UID ((*values)[i].insn)); - (*values)[i].n_counters = GET_MODE_BITSIZE ((*values)[i].mode) + - ((*values)[i].hdata.pow2.may_be_other ? 1 : 0); + INSN_UID ((rtx)(*values)[i].insn)); + (*values)[i].n_counters + = GET_MODE_BITSIZE ((*values)[i].mode) + + ((*values)[i].hdata.pow2.may_be_other ? 1 : 0); break; case HIST_TYPE_SINGLE_VALUE: if (dump_file) fprintf (dump_file, "Single value counter for insn %d.\n", - INSN_UID ((*values)[i].insn)); + INSN_UID ((rtx)(*values)[i].insn)); (*values)[i].n_counters = 3; break; @@ -223,7 +228,7 @@ find_values_to_profile (unsigned *n_values, struct histogram_value **values) if (dump_file) fprintf (dump_file, "Constant delta counter for insn %d.\n", - INSN_UID ((*values)[i].insn)); + INSN_UID ((rtx)(*values)[i].insn)); (*values)[i].n_counters = 4; break; @@ -231,6 +236,7 @@ find_values_to_profile (unsigned *n_values, struct histogram_value **values) abort (); } } + allocate_reg_info (max_reg_num (), FALSE, FALSE); } /* Main entry point. Finds REG_VALUE_PROFILE notes from profiler and uses @@ -313,8 +319,8 @@ find_values_to_profile (unsigned *n_values, struct histogram_value **values) making unroller happy. Since this may grow the code significantly, we would have to be very careful here. */ -bool -value_profile_transformations (void) +static bool +rtl_value_profile_transformations (void) { rtx insn, next; int changed = false; @@ -706,3 +712,71 @@ mod_subtract_transform (rtx insn) return true; } + +/* Connection to the outside world. */ +/* Struct for IR-dependent hooks. */ +struct value_prof_hooks { + /* Find list of values for which we want to measure histograms. */ + void (*find_values_to_profile) (unsigned *, struct histogram_value **); + + /* Identify and exploit properties of values that are hard to analyze + statically. See value-prof.c for more detail. */ + bool (*value_profile_transformations) (void); +}; + +/* Hooks for RTL-based versions (the only ones that currently work). */ +static struct value_prof_hooks rtl_value_prof_hooks = +{ + rtl_find_values_to_profile, + rtl_value_profile_transformations +}; + +void +rtl_register_value_prof_hooks (void) +{ + value_prof_hooks = &rtl_value_prof_hooks; + if (ir_type ()) + abort (); +} + +/* Tree-based versions are stubs for now. */ +static void +tree_find_values_to_profile (unsigned *n_values, struct histogram_value **values) +{ + (void)n_values; + (void)values; + abort (); +} + +static bool +tree_value_profile_transformations (void) +{ + abort (); +} + +static struct value_prof_hooks tree_value_prof_hooks = { + tree_find_values_to_profile, + tree_value_profile_transformations +}; + +void +tree_register_value_prof_hooks (void) +{ + value_prof_hooks = &tree_value_prof_hooks; + if (!ir_type ()) + abort (); +} + +/* IR-independent entry points. */ +void +find_values_to_profile (unsigned *n_values, struct histogram_value **values) +{ + (value_prof_hooks->find_values_to_profile) (n_values, values); +} + +bool +value_profile_transformations (void) +{ + return (value_prof_hooks->value_profile_transformations) (); +} + |