diff options
Diffstat (limited to 'gcc/ifcvt.c')
| -rw-r--r-- | gcc/ifcvt.c | 29 |
1 files changed, 11 insertions, 18 deletions
diff --git a/gcc/ifcvt.c b/gcc/ifcvt.c index 75458589..fd682a4 100644 --- a/gcc/ifcvt.c +++ b/gcc/ifcvt.c @@ -78,7 +78,7 @@ static int cond_exec_changed_p; /* Forward references. */ static int count_bb_insns (const_basic_block); -static bool cheap_bb_rtx_cost_p (const_basic_block, int, int); +static bool cheap_bb_rtx_cost_p (const_basic_block, profile_probability, int); static rtx_insn *first_active_insn (basic_block); static rtx_insn *last_active_insn (basic_block, int); static rtx_insn *find_active_insn_before (basic_block, rtx_insn *); @@ -132,11 +132,14 @@ count_bb_insns (const_basic_block bb) plus a small fudge factor. */ static bool -cheap_bb_rtx_cost_p (const_basic_block bb, int scale, int max_cost) +cheap_bb_rtx_cost_p (const_basic_block bb, + profile_probability prob, int max_cost) { int count = 0; rtx_insn *insn = BB_HEAD (bb); bool speed = optimize_bb_for_speed_p (bb); + int scale = prob.initialized_p () ? prob.to_reg_br_prob_base () + : REG_BR_PROB_BASE; /* Set scale to REG_BR_PROB_BASE to void the identical scaling applied to insn_rtx_cost when optimizing for size. Only do @@ -4807,7 +4810,8 @@ find_if_case_1 (basic_block test_bb, edge then_edge, edge else_edge) basic_block then_bb = then_edge->dest; basic_block else_bb = else_edge->dest; basic_block new_bb; - int then_bb_index, then_prob; + int then_bb_index; + profile_probability then_prob; rtx else_target = NULL_RTX; /* If we are partitioning hot/cold basic blocks, we don't want to @@ -4853,10 +4857,7 @@ find_if_case_1 (basic_block test_bb, edge then_edge, edge else_edge) "\nIF-CASE-1 found, start %d, then %d\n", test_bb->index, then_bb->index); - if (then_edge->probability) - then_prob = REG_BR_PROB_BASE - then_edge->probability; - else - then_prob = REG_BR_PROB_BASE / 2; + then_prob = then_edge->probability.invert (); /* We're speculating from the THEN path, we want to make sure the cost of speculation is within reason. */ @@ -4927,7 +4928,7 @@ find_if_case_2 (basic_block test_bb, edge then_edge, edge else_edge) basic_block then_bb = then_edge->dest; basic_block else_bb = else_edge->dest; edge else_succ; - int then_prob, else_prob; + profile_probability then_prob, else_prob; /* We do not want to speculate (empty) loop latches. */ if (current_loops @@ -4973,16 +4974,8 @@ find_if_case_2 (basic_block test_bb, edge then_edge, edge else_edge) if (then_bb->index < NUM_FIXED_BLOCKS) return FALSE; - if (else_edge->probability) - { - else_prob = else_edge->probability; - then_prob = REG_BR_PROB_BASE - else_prob; - } - else - { - else_prob = REG_BR_PROB_BASE / 2; - then_prob = REG_BR_PROB_BASE / 2; - } + else_prob = else_edge->probability; + then_prob = else_prob.invert (); /* ELSE is predicted or SUCC(ELSE) postdominates THEN. */ if (else_prob > then_prob) |