diff options
Diffstat (limited to 'gcc/tree-ssa-loop-ivopts.c')
| -rw-r--r-- | gcc/tree-ssa-loop-ivopts.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c index c0a2194..83ec13e 100644 --- a/gcc/tree-ssa-loop-ivopts.c +++ b/gcc/tree-ssa-loop-ivopts.c @@ -260,6 +260,9 @@ struct ivopts_data /* Are we optimizing for speed? */ bool speed; + + /* Whether the loop body includes any function calls. */ + bool body_includes_call; }; /* An assignment of iv candidates to uses. */ @@ -4431,7 +4434,8 @@ ivopts_global_cost_for_size (struct ivopts_data *data, unsigned size) { /* We add size to the cost, so that we prefer eliminating ivs if possible. */ - return size + estimate_reg_pressure_cost (size, data->regs_used, data->speed); + return size + estimate_reg_pressure_cost (size, data->regs_used, data->speed, + data->body_includes_call); } /* For each size of the induction variable set determine the penalty. */ @@ -4450,6 +4454,7 @@ determine_set_costs (struct ivopts_data *data) { fprintf (dump_file, "Global costs:\n"); fprintf (dump_file, " target_avail_regs %d\n", target_avail_regs); + fprintf (dump_file, " target_clobbered_regs %d\n", target_clobbered_regs); fprintf (dump_file, " target_reg_cost %d\n", target_reg_cost[data->speed]); fprintf (dump_file, " target_spill_cost %d\n", target_spill_cost[data->speed]); } @@ -5859,6 +5864,25 @@ tree_ssa_iv_optimize_finalize (struct ivopts_data *data) VEC_free (iv_cand_p, heap, data->iv_candidates); } +/* Returns true if the loop body BODY includes any function calls. */ + +static bool +loop_body_includes_call (basic_block *body, unsigned num_nodes) +{ + gimple_stmt_iterator gsi; + unsigned i; + + for (i = 0; i < num_nodes; i++) + for (gsi = gsi_start_bb (body[i]); !gsi_end_p (gsi); gsi_next (&gsi)) + { + gimple stmt = gsi_stmt (gsi); + if (is_gimple_call (stmt) + && !is_inexpensive_builtin (gimple_call_fndecl (stmt))) + return true; + } + return false; +} + /* Optimizes the LOOP. Returns true if anything changed. */ static bool @@ -5890,6 +5914,7 @@ tree_ssa_iv_optimize_loop (struct ivopts_data *data, struct loop *loop) } body = get_loop_body (loop); + data->body_includes_call = loop_body_includes_call (body, loop->num_nodes); renumber_gimple_stmt_uids_in_blocks (body, loop->num_nodes); free (body); |