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Try to dump some information before aborting.

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From-SVN: r37699
This commit is contained in:
Bernd Schmidt 2000-11-23 18:19:18 +00:00 • committed by Bernd Schmidt
parent ab09753510
commit f9b697bfa1
2 changed files with 41 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2000-11-23 Bernd Schmidt <bernds@redhat.co.uk>
* flow.c (print_rtl_and_abort): New function.
(verify_wide_reg, verify_local_live_at_start): Try to dump more
information before aborting.
2000-11-23 Alexandre Oliva <aoliva@redhat.com>
* emit-rtl.c (gen_lowpart_common): Use word 0 if register mode

38
gcc/flow.c
View file

@ -405,6 +405,7 @@ static void mark_used_regs PARAMS ((struct propagate_block_info *,
void dump_flow_info PARAMS ((FILE *));
void debug_flow_info PARAMS ((void));
static void dump_edge_info PARAMS ((FILE *, edge, int));
static void print_rtl_and_abort PARAMS ((void));
static void invalidate_mems_from_autoinc PARAMS ((struct propagate_block_info *,
rtx));
@ -2863,7 +2864,9 @@ verify_wide_reg (regno, head, end)
}
/* We didn't find the register at all. Something's way screwy. */
abort ();
if (rtl_dump_file)
fprintf (rtl_dump_file, "Aborting in verify_wide_reg; reg %d\n", regno);
print_rtl_and_abort ();
}
/* A subroutine of update_life_info. Verify that there are no untoward
@ -2879,7 +2882,17 @@ verify_local_live_at_start (new_live_at_start, bb)
/* After reload, there are no pseudos, nor subregs of multi-word
registers. The regsets should exactly match. */
if (! REG_SET_EQUAL_P (new_live_at_start, bb->global_live_at_start))
abort ();
{
if (rtl_dump_file)
{
fprintf (rtl_dump_file,
"live_at_start mismatch in bb %d, aborting\n",
bb->index);
debug_bitmap_file (rtl_dump_file, bb->global_live_at_start);
debug_bitmap_file (rtl_dump_file, new_live_at_start);
}
print_rtl_and_abort ();
}
}
else
{
@ -2892,7 +2905,14 @@ verify_local_live_at_start (new_live_at_start, bb)
{
/* No registers should die. */
if (REGNO_REG_SET_P (bb->global_live_at_start, i))
abort ();
{
if (rtl_dump_file)
fprintf (rtl_dump_file,
"Register %d died unexpectedly in block %d\n", i,
bb->index);
print_rtl_and_abort ();
}
/* Verify that the now-live register is wider than word_mode. */
verify_wide_reg (i, bb->head, bb->end);
});
@ -6247,6 +6267,18 @@ print_rtl_with_bb (outf, rtx_first)
}
}
/* Dump the rtl into the current debugging dump file, then abort. */
static void
print_rtl_and_abort (void)
{
if (rtl_dump_file)
{
print_rtl_with_bb (rtl_dump_file, get_insns ());
fclose (rtl_dump_file);
}
abort ();
}
/* Recompute register set/reference counts immediately prior to register
allocation.