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obstack-per-frchain changes

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stabs.c caching changes
obstack chunksize changes
This commit is contained in:
Ken Raeburn 1995-10-18 21:23:09 +00:00
parent d19dcb6715
commit 3366a224eb
1 changed files with 46 additions and 0 deletions
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@ -1,5 +1,51 @@
Wed Oct 18 13:20:32 1995 Ken Raeburn <raeburn@cygnus.com>
* Use one active frag and one obstack per frag chain:
* frags.c (frags): Variable deleted.
(frag_alloc): New function.
(frag_grow, frag_more, frag_variant, frag_now_fix,
frag_append_1_char): Refer to frchain_now->frch_obstack instead of
frags variable.
(frag_new): Ditto. Verify that frch_last and frag_now match on
entry and exit, and that old frag_now has non-zero type. Replace
"know" uses with "assert". Use frag_alloc instead of mucking with
obstack alignment.
* frags.h (frags): Declaration deleted.
* subsegs.h (struct frchain): Add new field frch_frag_now.
* subsegs.c (frchains, dummy_frag, absolute_frchain): New static
variables.
(subsegs_begin): Initialize frchains obstack. Under gcc, don't
give it any stricter alignment than frchainS structures need. Do
not initialize frags obstack. Set frag_now to point to
dummy_obstack. Initialize absolute_frchain.
(subseg_set_rest): Save and restore frag_now in frch_frag_now
field of frchainS. Don't create new frags on section switch, and
use frag_alloc when creating a new frag chain. For absolute
section, set frchain_now to absolute_frchain. Verify that
frch_last and frag_now match on entry and exit. Initialize
per-chain obstack, and under gcc, set required alignment to that
needed by fragS structure.
* write.c (chain_frchains_together_1): Verify fr_type is nonzero.
* stabs.c (get_stab_string_offset): Only copy input string if a
fresh copy is needed, not if the section already exists.
(s_stab_generic): Cache stab section name to bypass lookups, since
usually it will match. Could be made faster still by changing the
memory allocation rules.
(s_xstab): Cache section name to bypass repeated string
allocation.
* frags.c (frag_new): Deleted register declarations.
* listing.c (frag_now): Don't declare.
* as.c (chunksize): New variable.
(debug_memory): New variable.
(main): If debug_memory is set, reduce chunksize and
_bfd_chunksize.
* as.h (chunksize): Declare it.
* read.c (read_begin): Use it.
* config/tc-alpha.c (md_shortopts): Include 'g'.
(md_parse_option): Ignore it.