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| author | Jan Hubicka <jh@suse.cz> | 2001-06-23 01:27:48 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2001-06-22 23:27:48 +0000 |
| commit | 9401afe31a29a1b933a87eb5f11d20e950cae82d (patch) | |
| tree | 1487bbd44b4837e8ff22896787a36be48e22e427 /gcc/flow.c | |
| parent | 44f498639c0cdfd08c184f834ebae07b8dc51831 (diff) | |
| download | gcc-9401afe31a29a1b933a87eb5f11d20e950cae82d.zip gcc-9401afe31a29a1b933a87eb5f11d20e950cae82d.tar.gz gcc-9401afe31a29a1b933a87eb5f11d20e950cae82d.tar.bz2 | |
flow.c (mark_set_1, [...]): compute REG_FREQ using bb->frequency.
* flow.c (mark_set_1, attempt_auto_inc, mark_used_reg,
try_pre_increment_1): compute REG_FREQ using bb->frequency.
* regclass.c (loop_cost): Kill.
(frequency): New global variable.
(record_operand_costs): Replace loop_cost by frequency.
(scan_one_insn): Likewise.
(regclass): Likewise; set frequency according to bb->frequency.
* flow.c (split_edge): Set frequency.
From-SVN: r43523
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 14 |
1 files changed, 9 insertions, 5 deletions
@@ -1627,7 +1627,8 @@ split_edge (edge_in) bb->pred = edge_in; bb->succ = edge_out; bb->count = edge_in->count; - /* ??? Set bb->frequency. */ + bb->frequency = (edge_in->probability * edge_in->src->frequency + / REG_BR_PROB_BASE); edge_in->dest = bb; edge_in->flags &= ~EDGE_CRITICAL; @@ -4857,7 +4858,8 @@ mark_set_1 (pbi, code, reg, cond, insn, flags) register twice if it is modified, but that is correct. */ REG_N_SETS (i) += 1; REG_N_REFS (i) += 1; - REG_FREQ (i) += (optimize_size ? 1 : pbi->bb->loop_depth + 1); + REG_FREQ (i) += (optimize_size || !pbi->bb->frequency + ? 1 : pbi->bb->frequency); /* The insns where a reg is live are normally counted elsewhere, but we want the count to include the insn @@ -5524,7 +5526,8 @@ attempt_auto_inc (pbi, inc, insn, mem, incr, incr_reg) /* Count an extra reference to the reg. When a reg is incremented, spilling it is worse, so we want to make that less likely. */ - REG_FREQ (regno) += (optimize_size ? 1 : pbi->bb->loop_depth + 1); + REG_FREQ (regno) += (optimize_size || !phi->bb->frequency + ? 1 : pbi->bb->frequency); /* Count the increment as a setting of the register, even though it isn't a SET in rtl. */ @@ -5690,7 +5693,7 @@ mark_used_reg (pbi, reg, cond, insn) /* Count (weighted) number of uses of each reg. */ REG_FREQ (regno_first) - += (optimize_size ? 1 : pbi->bb->loop_depth + 1); + += (optimize_size || !pbi->bb->frequency ? 1 : pbi->bb->frequency); REG_N_REFS (regno_first)++; } } @@ -6112,7 +6115,8 @@ try_pre_increment_1 (pbi, insn) so we want to make that less likely. */ if (regno >= FIRST_PSEUDO_REGISTER) { - REG_FREQ (regno) += (optimize_size ? 1 : pbi->bb->loop_depth + 1); + REG_FREQ (regno) += (optimize_size || !phi->bb->frequency + ? 1 : pbi->bb->frequency); REG_N_SETS (regno)++; } |