From dec2b703db032342463d9366c7ca6882d7987f4a Mon Sep 17 00:00:00 2001 From: Janis Johnson Date: Wed, 11 Jul 2001 17:36:50 +0000 Subject: [PATCH] profile.c (branch_prob): Fix .bbg info for computed gotos and C++ EH code. * profile.c (branch_prob): Fix .bbg info for computed gotos and C++ EH code. From-SVN: r43942 --- gcc/ChangeLog | 5 +++++ gcc/profile.c | 49 +++++++++++++++++++++++++++++++++++++------------ 2 files changed, 42 insertions(+), 12 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7093a5c0488..f46d051a334 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-07-11 Janis Johnson + + * profile.c (branch_prob): Fix .bbg info for computed gotos + and C++ EH code. + 2001-07-11 Mark Mitchell * stmt.c (parse_output_constraint): New function, split out diff --git a/gcc/profile.c b/gcc/profile.c index 37fe3c2e707..fd03d4be074 100644 --- a/gcc/profile.c +++ b/gcc/profile.c @@ -100,6 +100,7 @@ int count_instrumented_edges; static int total_num_blocks; static int total_num_edges; +static int total_num_edges_ignored; static int total_num_edges_instrumented; static int total_num_blocks_created; static int total_num_passes; @@ -539,7 +540,7 @@ void branch_prob () { int i; - int num_edges; + int num_edges, ignored_edges; struct edge_info *edge_infos; struct edge_list *el; @@ -626,6 +627,7 @@ branch_prob () edge_infos = (struct edge_info *) xcalloc (num_edges, sizeof (struct edge_info)); + ignored_edges = 0; for (i = 0 ; i < num_edges ; i++) { edge e = INDEX_EDGE (el, i); @@ -635,17 +637,12 @@ branch_prob () /* Mark edges we've replaced by fake edges above as ignored. */ if ((e->flags & (EDGE_ABNORMAL | EDGE_ABNORMAL_CALL)) && e->src != ENTRY_BLOCK_PTR && e->dest != EXIT_BLOCK_PTR) - EDGE_INFO (e)->ignore = 1; + { + EDGE_INFO (e)->ignore = 1; + ignored_edges++; + } } - total_num_blocks += n_basic_blocks + 2; - if (rtl_dump_file) - fprintf (rtl_dump_file, "%d basic blocks\n", n_basic_blocks); - - total_num_edges += num_edges; - if (rtl_dump_file) - fprintf (rtl_dump_file, "%d edges\n", num_edges); - #ifdef ENABLE_CHECKING verify_flow_info (); #endif @@ -722,6 +719,31 @@ branch_prob () find_spanning_tree (el); + /* Fake edges that are not on the tree will not be instrumented, so + mark them ignored. */ + for (i = 0; i < num_edges; i++) + { + edge e = INDEX_EDGE (el, i); + struct edge_info *inf = EDGE_INFO (e); + if ((e->flags & EDGE_FAKE) && !inf->ignore && !inf->on_tree) + { + inf->ignore = 1; + ignored_edges++; + } + } + + total_num_blocks += n_basic_blocks + 2; + if (rtl_dump_file) + fprintf (rtl_dump_file, "%d basic blocks\n", n_basic_blocks); + + total_num_edges += num_edges; + if (rtl_dump_file) + fprintf (rtl_dump_file, "%d edges\n", num_edges); + + total_num_edges_ignored += ignored_edges; + if (rtl_dump_file) + fprintf (rtl_dump_file, "%d ignored edges\n", ignored_edges); + /* Create a .bbg file from which gcov can reconstruct the basic block graph. First output the number of basic blocks, and then for every edge output the source and target basic block numbers. @@ -733,7 +755,7 @@ branch_prob () /* The plus 2 stands for entry and exit block. */ __write_long (n_basic_blocks + 2, bbg_file, 4); - __write_long (num_edges + 1, bbg_file, 4); + __write_long (num_edges - ignored_edges + 1, bbg_file, 4); for (i = 0; i < n_basic_blocks + 1; i++) { @@ -754,7 +776,7 @@ branch_prob () flag_bits = 0; if (i->on_tree) flag_bits |= 0x1; - if (e->flags & EDGE_ABNORMAL) + if (e->flags & EDGE_FAKE) flag_bits |= 0x2; if (e->flags & EDGE_FALLTHRU) flag_bits |= 0x4; @@ -950,6 +972,7 @@ init_branch_prob (filename) total_num_blocks = 0; total_num_edges = 0; + total_num_edges_ignored = 0; total_num_edges_instrumented = 0; total_num_blocks_created = 0; total_num_passes = 0; @@ -995,6 +1018,8 @@ end_branch_prob () fprintf (rtl_dump_file, "Total number of blocks: %d\n", total_num_blocks); fprintf (rtl_dump_file, "Total number of edges: %d\n", total_num_edges); + fprintf (rtl_dump_file, "Total number of ignored edges: %d\n", + total_num_edges_ignored); fprintf (rtl_dump_file, "Total number of instrumented edges: %d\n", total_num_edges_instrumented); fprintf (rtl_dump_file, "Total number of blocks created: %d\n", -- 2.30.2