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-dA enhancement 

From-SVN: r172212
This commit is contained in:
Xinliang David Li 2011-04-08 21:01:08 +00:00 committed by Xinliang David Li
parent d5f3624e37
commit 6a801cf261
2 changed files with 83 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-04-08 Xinliang David Li <davidxl@google.com>
* final.c (dump_basic_block_info): New function.
(final): Dump basic block.
(final_scan_insn): Remove old dump.
2011-04-08 Steven G. Kargl <kargl@gcc.gnu.org>
PR 47829

81
gcc/final.c
View File

@ -1672,6 +1672,54 @@ final_end_function (void)
dwarf2out_end_epilogue (last_linenum, last_filename);
}
/* Dumper helper for basic block information. FILE is the assembly
output file, and INSN is the instruction being emitted. */
static void
dump_basic_block_info (FILE *file, rtx insn, basic_block *start_to_bb,
basic_block *end_to_bb, int bb_map_size, int *bb_seqn)
{
basic_block bb;
if (!flag_debug_asm)
return;
if (INSN_UID (insn) < bb_map_size
&& (bb = start_to_bb[INSN_UID (insn)]) != NULL)
{
edge e;
edge_iterator ei;
fprintf (file, "# BLOCK %d", bb->index);
if (bb->frequency)
fprintf (file, " freq:%d", bb->frequency);
if (bb->count)
fprintf (file, " count:" HOST_WIDEST_INT_PRINT_DEC,
bb->count);
fprintf (file, " seq:%d", (*bb_seqn)++);
fprintf (file, "\n# PRED:");
FOR_EACH_EDGE (e, ei, bb->preds)
{
dump_edge_info (file, e, 0);
}
fprintf (file, "\n");
}
if (INSN_UID (insn) < bb_map_size
&& (bb = end_to_bb[INSN_UID (insn)]) != NULL)
{
edge e;
edge_iterator ei;
fprintf (asm_out_file, "# SUCC:");
FOR_EACH_EDGE (e, ei, bb->succs)
{
dump_edge_info (asm_out_file, e, 1);
}
fprintf (file, "\n");
}
}
/* Output assembler code for some insns: all or part of a function.
For description of args, see `final_start_function', above. */
@ -1682,6 +1730,12 @@ final (rtx first, FILE *file, int optimize_p)
int max_uid = 0;
int seen = 0;
/* Used for -dA dump. */
basic_block *start_to_bb = NULL;
basic_block *end_to_bb = NULL;
int bb_map_size = 0;
int bb_seqn = 0;
last_ignored_compare = 0;
for (insn = first; insn; insn = NEXT_INSN (insn))
@ -1706,6 +1760,21 @@ final (rtx first, FILE *file, int optimize_p)
CC_STATUS_INIT;
if (flag_debug_asm)
{
basic_block bb;
bb_map_size = get_max_uid () + 1;
start_to_bb = XCNEWVEC (basic_block, bb_map_size);
end_to_bb = XCNEWVEC (basic_block, bb_map_size);
FOR_EACH_BB_REVERSE (bb)
{
start_to_bb[INSN_UID (BB_HEAD (bb))] = bb;
end_to_bb[INSN_UID (BB_END (bb))] = bb;
}
}
/* Output the insns. */
for (insn = first; insn;)
{
@ -1721,8 +1790,16 @@ final (rtx first, FILE *file, int optimize_p)
insn_current_address = INSN_ADDRESSES (INSN_UID (insn));
#endif /* HAVE_ATTR_length */
dump_basic_block_info (file, insn, start_to_bb, end_to_bb,
bb_map_size, &bb_seqn);
insn = final_scan_insn (insn, file, optimize_p, 0, &seen);
}
if (flag_debug_asm)
{
free (start_to_bb);
free (end_to_bb);
}
}
const char *
@ -1858,10 +1935,6 @@ final_scan_insn (rtx insn, FILE *file, int optimize_p ATTRIBUTE_UNUSED,
if (targetm.asm_out.unwind_emit)
targetm.asm_out.unwind_emit (asm_out_file, insn);
if (flag_debug_asm)
fprintf (asm_out_file, "\t%s basic block %d\n",
ASM_COMMENT_START, NOTE_BASIC_BLOCK (insn)->index);
if ((*seen & (SEEN_EMITTED | SEEN_BB)) == SEEN_BB)
{
*seen |= SEEN_EMITTED;