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Fix PR 1889, infinite loop compiling code with bad user template.

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* config/tc-ia64.c (emit_one_bundle): Perform last_slot < 0 check
even when manual_bundling isn't set.
This commit is contained in:
Jim Wilson 2005-11-23 01:40:55 +00:00
parent 6e572af013
commit 6abae71cc3
2 changed files with 22 additions and 13 deletions
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5
gas/ChangeLog
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@ -1,3 +1,8 @@
2005-11-22 James E Wilson <wilson@specifix.com>
* config/tc-ia64.c (emit_one_bundle): Perform last_slot < 0 check
even when manual_bundling isn't set.
2005-11-18 Jie Zhang <jie.zhang@analog.com>
* config/bfin-defs.h (IS_BREG, IS_LREG): New macros.

30
gas/config/tc-ia64.c
View file

@ -7084,25 +7084,28 @@ emit_one_bundle ()
curr = (curr + 1) % NUM_SLOTS;
idesc = md.slot[curr].idesc;
}
if (manual_bundling > 0)
/* A user template was specified, but the first following instruction did
not fit. This can happen with or without manual bundling. */
if (md.num_slots_in_use > 0 && last_slot < 0)
{
as_bad_where (md.slot[curr].src_file, md.slot[curr].src_line,
"`%s' does not fit into %s template",
idesc->name, ia64_templ_desc[template].name);
/* Drop first insn so we don't livelock. */
--md.num_slots_in_use;
know (curr == first);
ia64_free_opcode (md.slot[curr].idesc);
memset (md.slot + curr, 0, sizeof (md.slot[curr]));
md.slot[curr].user_template = -1;
}
else if (manual_bundling > 0)
{
if (md.num_slots_in_use > 0)
{
if (last_slot >= 2)
as_bad_where (md.slot[curr].src_file, md.slot[curr].src_line,
"`%s' does not fit into bundle", idesc->name);
else if (last_slot < 0)
{
as_bad_where (md.slot[curr].src_file, md.slot[curr].src_line,
"`%s' does not fit into %s template",
idesc->name, ia64_templ_desc[template].name);
/* Drop first insn so we don't livelock. */
--md.num_slots_in_use;
know (curr == first);
ia64_free_opcode (md.slot[curr].idesc);
memset (md.slot + curr, 0, sizeof (md.slot[curr]));
md.slot[curr].user_template = -1;
}
else
{
const char *where;
@ -7122,6 +7125,7 @@ emit_one_bundle ()
as_bad_where (md.slot[curr].src_file, md.slot[curr].src_line,
"Missing '}' at end of file");
}
know (md.num_slots_in_use < NUM_SLOTS);
t0 = end_of_insn_group | (template << 1) | (insn[0] << 5) | (insn[1] << 46);