diff options
Diffstat (limited to 'gcc/profile.c')
| -rw-r--r-- | gcc/profile.c | 111 |
1 files changed, 54 insertions, 57 deletions
diff --git a/gcc/profile.c b/gcc/profile.c index 2140a0fed30..dd23628c708 100644 --- a/gcc/profile.c +++ b/gcc/profile.c @@ -66,10 +66,10 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA /* Additional information about the edges we need. */ struct edge_info { unsigned int count_valid : 1; - + /* Is on the spanning tree. */ unsigned int on_tree : 1; - + /* Pretend this edge does not exist (it is abnormal and we've inserted a fake to compensate). */ unsigned int ignore : 1; @@ -105,18 +105,21 @@ static int total_num_never_executed; static int total_num_branches; /* Forward declarations. */ -static void find_spanning_tree PARAMS ((struct edge_list *)); -static rtx gen_edge_profiler PARAMS ((int)); -static rtx gen_interval_profiler (struct histogram_value *, unsigned, unsigned); +static void find_spanning_tree (struct edge_list *); +static rtx gen_edge_profiler (int); +static rtx gen_interval_profiler (struct histogram_value *, unsigned, + unsigned); static rtx gen_pow2_profiler (struct histogram_value *, unsigned, unsigned); -static rtx gen_one_value_profiler (struct histogram_value *, unsigned, unsigned); -static rtx gen_const_delta_profiler (struct histogram_value *, unsigned, unsigned); -static unsigned instrument_edges PARAMS ((struct edge_list *)); +static rtx gen_one_value_profiler (struct histogram_value *, unsigned, + unsigned); +static rtx gen_const_delta_profiler (struct histogram_value *, unsigned, + unsigned); +static unsigned instrument_edges (struct edge_list *); static void instrument_values (unsigned, struct histogram_value *); -static void compute_branch_probabilities PARAMS ((void)); -static gcov_type * get_exec_counts PARAMS ((void)); -static basic_block find_group PARAMS ((basic_block)); -static void union_groups PARAMS ((basic_block, basic_block)); +static void compute_branch_probabilities (void); +static gcov_type * get_exec_counts (void); +static basic_block find_group (basic_block); +static void union_groups (basic_block, basic_block); /* Add edge instrumentation code to the entire insn chain. @@ -125,13 +128,12 @@ static void union_groups PARAMS ((basic_block, basic_block)); NUM_BLOCKS is the number of basic blocks found in F. */ static unsigned -instrument_edges (el) - struct edge_list *el; +instrument_edges (struct edge_list *el) { unsigned num_instr_edges = 0; int num_edges = NUM_EDGES (el); basic_block bb; - + remove_fake_edges (); FOR_BB_BETWEEN (bb, ENTRY_BLOCK_PTR, NULL, next_bb) @@ -141,11 +143,11 @@ instrument_edges (el) for (e = bb->succ; e; e = e->succ_next) { struct edge_info *inf = EDGE_INFO (e); - + if (!inf->ignore && !inf->on_tree) { rtx edge_profile; - + if (e->flags & EDGE_ABNORMAL) abort (); if (rtl_dump_file) @@ -172,7 +174,7 @@ instrument_values (unsigned n_values, struct histogram_value *values) rtx sequence; unsigned i, t; edge e; - + /* Emit code to generate the histograms before the insns. */ for (i = 0; i < n_values; i++) @@ -233,12 +235,12 @@ instrument_values (unsigned n_values, struct histogram_value *values) /* Computes hybrid profile for all matching entries in da_file. */ static gcov_type * -get_exec_counts () +get_exec_counts (void) { unsigned num_edges = 0; basic_block bb; gcov_type *counts; - + /* Count the edges to be (possibly) instrumented. */ FOR_BB_BETWEEN (bb, ENTRY_BLOCK_PTR, NULL, next_bb) { @@ -264,7 +266,7 @@ get_exec_counts () Annotate them accordingly. */ static void -compute_branch_probabilities () +compute_branch_probabilities (void) { basic_block bb; int i; @@ -616,7 +618,7 @@ compute_branch_probabilities () Main entry point of this file. */ void -branch_prob () +branch_prob (void) { basic_block bb; unsigned i; @@ -716,7 +718,7 @@ branch_prob () as possible to minimize number of edge splits necessary. */ find_spanning_tree (el); - + /* Fake edges that are not on the tree will not be instrumented, so mark them ignored. */ for (num_instrumented = i = 0; i < num_edges; i++) @@ -754,7 +756,7 @@ branch_prob () if (coverage_begin_output ()) { gcov_position_t offset; - + offset = gcov_write_tag (GCOV_TAG_BLOCKS); for (i = 0; i != (unsigned) (n_basic_blocks + 2); i++) gcov_write_unsigned (0); @@ -767,7 +769,7 @@ branch_prob () ENTRY_BLOCK_PTR->index = -1; EXIT_BLOCK_PTR->index = last_basic_block; #define BB_TO_GCOV_INDEX(bb) ((bb)->index + 1) - + /* Arcs */ if (coverage_begin_output ()) { @@ -779,14 +781,14 @@ branch_prob () offset = gcov_write_tag (GCOV_TAG_ARCS); gcov_write_unsigned (BB_TO_GCOV_INDEX (bb)); - + for (e = bb->succ; e; e = e->succ_next) { struct edge_info *i = EDGE_INFO (e); if (!i->ignore) { unsigned flag_bits = 0; - + if (i->on_tree) flag_bits |= GCOV_ARC_ON_TREE; if (e->flags & EDGE_FAKE) @@ -802,20 +804,20 @@ branch_prob () gcov_write_length (offset); } } - + /* Line numbers. */ if (coverage_begin_output ()) { char const *prev_file_name = NULL; gcov_position_t offset; - + FOR_EACH_BB (bb) { rtx insn = bb->head; int ignore_next_note = 0; - + offset = 0; - + /* We are looking for line number notes. Search backward before basic block to find correct ones. */ insn = prev_nonnote_insn (insn); @@ -823,7 +825,7 @@ branch_prob () insn = get_insns (); else insn = NEXT_INSN (insn); - + while (insn != bb->end) { if (GET_CODE (insn) == NOTE) @@ -846,7 +848,7 @@ branch_prob () offset = gcov_write_tag (GCOV_TAG_LINES); gcov_write_unsigned (BB_TO_GCOV_INDEX (bb)); } - + /* If this is a new source file, then output the file's name to the .bb file. */ if (!prev_file_name @@ -862,7 +864,7 @@ branch_prob () } insn = NEXT_INSN (insn); } - + if (offset) { /* A file of NULL indicates the end of run. */ @@ -920,8 +922,7 @@ branch_prob () aux fields. */ static basic_block -find_group (bb) - basic_block bb; +find_group (basic_block bb) { basic_block group = bb, bb1; @@ -939,8 +940,7 @@ find_group (bb) } static void -union_groups (bb1, bb2) - basic_block bb1, bb2; +union_groups (basic_block bb1, basic_block bb2) { basic_block bb1g = find_group (bb1); basic_block bb2g = find_group (bb2); @@ -961,8 +961,7 @@ union_groups (bb1, bb2) are more expensive to instrument. */ static void -find_spanning_tree (el) - struct edge_list *el; +find_spanning_tree (struct edge_list *el) { int i; int num_edges = NUM_EDGES (el); @@ -1031,7 +1030,7 @@ find_spanning_tree (el) /* Perform file-level initialization for branch-prob processing. */ void -init_branch_prob () +init_branch_prob (void) { int i; @@ -1052,7 +1051,7 @@ init_branch_prob () is completed. */ void -end_branch_prob () +end_branch_prob (void) { if (rtl_dump_file) { @@ -1092,8 +1091,7 @@ end_branch_prob () /* Output instructions as RTL to increment the edge execution count. */ static rtx -gen_edge_profiler (edgeno) - int edgeno; +gen_edge_profiler (int edgeno) { rtx ref = coverage_counter_ref (GCOV_COUNTER_ARCS, edgeno); rtx tmp; @@ -1119,8 +1117,8 @@ gen_edge_profiler (edgeno) section for counters, BASE is offset of the counter position. */ static rtx -gen_interval_profiler (struct histogram_value *value, - unsigned tag, unsigned base) +gen_interval_profiler (struct histogram_value *value, unsigned tag, + unsigned base) { unsigned gcov_size = tree_low_cst (TYPE_SIZE (GCOV_TYPE_NODE), 1); enum machine_mode mode = mode_for_size (gcov_size, MODE_INT, 0); @@ -1175,7 +1173,7 @@ gen_interval_profiler (struct histogram_value *value, emit_label (more_label); tmp1 = expand_simple_binop (Pmode, PLUS, copy_rtx (tmp), GEN_INT (per_counter * value->hdata.intvl.steps), - mr, 0, OPTAB_WIDEN); + mr, 0, OPTAB_WIDEN); if (tmp1 != mr) emit_move_insn (copy_rtx (mr), tmp1); if (value->hdata.intvl.may_be_less) @@ -1220,8 +1218,7 @@ gen_interval_profiler (struct histogram_value *value, section for counters, BASE is offset of the counter position. */ static rtx -gen_pow2_profiler (struct histogram_value *value, - unsigned tag, unsigned base) +gen_pow2_profiler (struct histogram_value *value, unsigned tag, unsigned base) { unsigned gcov_size = tree_low_cst (TYPE_SIZE (GCOV_TYPE_NODE), 1); enum machine_mode mode = mode_for_size (gcov_size, MODE_INT, 0); @@ -1254,7 +1251,7 @@ gen_pow2_profiler (struct histogram_value *value, tmp = expand_simple_binop (value->mode, AND, copy_rtx (uval), tmp, NULL_RTX, 0, OPTAB_WIDEN); do_compare_rtx_and_jump (tmp, const0_rtx, NE, 0, value->mode, NULL_RTX, - NULL_RTX, end_of_code_label); + NULL_RTX, end_of_code_label); } /* Count log_2(value). */ @@ -1294,8 +1291,8 @@ gen_pow2_profiler (struct histogram_value *value, section for counters, BASE is offset of the counter position. */ static rtx -gen_one_value_profiler (struct histogram_value *value, - unsigned tag, unsigned base) +gen_one_value_profiler (struct histogram_value *value, unsigned tag, + unsigned base) { unsigned gcov_size = tree_low_cst (TYPE_SIZE (GCOV_TYPE_NODE), 1); enum machine_mode mode = mode_for_size (gcov_size, MODE_INT, 0); @@ -1324,7 +1321,7 @@ gen_one_value_profiler (struct histogram_value *value, /* Check if the stored value matches. */ do_compare_rtx_and_jump (copy_rtx (uval), copy_rtx (stored_value), EQ, 0, mode, NULL_RTX, NULL_RTX, same_label); - + /* Does not match; check whether the counter is zero. */ do_compare_rtx_and_jump (copy_rtx (counter), const0_rtx, EQ, 0, mode, NULL_RTX, NULL_RTX, zero_label); @@ -1338,7 +1335,7 @@ gen_one_value_profiler (struct histogram_value *value, emit_jump_insn (gen_jump (end_of_code_label)); emit_barrier (); - + emit_label (zero_label); /* Set new value. */ emit_move_insn (copy_rtx (stored_value), copy_rtx (uval)); @@ -1350,7 +1347,7 @@ gen_one_value_profiler (struct histogram_value *value, if (tmp != counter) emit_move_insn (copy_rtx (counter), tmp); - + emit_label (end_of_code_label); /* Increase the counter of all executions; this seems redundant given @@ -1375,8 +1372,8 @@ gen_one_value_profiler (struct histogram_value *value, section for counters, BASE is offset of the counter position. */ static rtx -gen_const_delta_profiler (struct histogram_value *value, - unsigned tag, unsigned base) +gen_const_delta_profiler (struct histogram_value *value, unsigned tag, + unsigned base) { struct histogram_value one_value_delta; unsigned gcov_size = tree_low_cst (TYPE_SIZE (GCOV_TYPE_NODE), 1); |