diff options
Diffstat (limited to 'gcc/tree-inline.c')
| -rw-r--r-- | gcc/tree-inline.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/gcc/tree-inline.c b/gcc/tree-inline.c index 8c5626d..f825c5d 100644 --- a/gcc/tree-inline.c +++ b/gcc/tree-inline.c @@ -2387,9 +2387,12 @@ estimate_num_insns_1 (tree *tp, int *walk_subtrees, void *data) break; case SWITCH_EXPR: - /* TODO: Cost of a switch should be derived from the number of - branches. */ - d->count += d->weights->switch_cost; + /* Take into account cost of the switch + guess 2 conditional jumps for + each case label. + + TODO: once the switch expansion logic is sufficiently separated, we can + do better job on estimating cost of the switch. */ + d->count += TREE_VEC_LENGTH (SWITCH_LABELS (x)) * 2; break; /* Few special cases of expensive operations. This is useful @@ -2518,13 +2521,11 @@ init_inline_once (void) eni_inlining_weights.call_cost = PARAM_VALUE (PARAM_INLINE_CALL_COST); eni_inlining_weights.target_builtin_call_cost = 1; eni_inlining_weights.div_mod_cost = 10; - eni_inlining_weights.switch_cost = 1; eni_inlining_weights.omp_cost = 40; eni_size_weights.call_cost = 1; eni_size_weights.target_builtin_call_cost = 1; eni_size_weights.div_mod_cost = 1; - eni_size_weights.switch_cost = 10; eni_size_weights.omp_cost = 40; /* Estimating time for call is difficult, since we have no idea what the @@ -2534,7 +2535,6 @@ init_inline_once (void) eni_time_weights.call_cost = 10; eni_time_weights.target_builtin_call_cost = 10; eni_time_weights.div_mod_cost = 10; - eni_time_weights.switch_cost = 4; eni_time_weights.omp_cost = 40; } |