diff options
| author | Jeffrey A Law <law@cygnus.com> | 1998-11-24 23:15:19 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1998-11-24 16:15:19 -0700 |
| commit | 940da3246db50a1c1fde531ba1457e6bef61b3f9 (patch) | |
| tree | 488e0bd31e47424105f777ed841d306134aabbfd /gcc/loop.c | |
| parent | 83f660b7585eed3232073f360075fd93a2c66468 (diff) | |
| download | gcc-940da3246db50a1c1fde531ba1457e6bef61b3f9.zip gcc-940da3246db50a1c1fde531ba1457e6bef61b3f9.tar.gz gcc-940da3246db50a1c1fde531ba1457e6bef61b3f9.tar.bz2 | |
cse.c (fold_rtx): Make autoincrement addressing mode tests be runtime selectable.
* cse.c (fold_rtx): Make autoincrement addressing mode tests be
runtime selectable.
* expr.c (move_by_pieces): Similarly.
(move_by_pieces_1, clear_by_pieces, clear_by_pieces_1): Similarly.
* flow.c (find_auto_inc): Similarly.
(try_pre_increment): Similarly.
* loop.c (strength_reduce): Similarly.
* regclass.c (auto_inc_dec_reg_p): Similarly.
* regmove.c (try_auto_increment): Similarly.
(fixup_match_1): Similarly.
* rtl.h (HAVE_PRE_INCREMENT): Define if not already defined.
(HAVE_PRE_DECREMENT): Similarly.
(HAVE_POST_INCREMENT, HAVE_POST_DECREMENT): Similarly.
sponding changes to all target header files.
From-SVN: r23837
Diffstat (limited to 'gcc/loop.c')
| -rw-r--r-- | gcc/loop.c | 16 |
1 files changed, 10 insertions, 6 deletions
@@ -4168,14 +4168,18 @@ strength_reduce (scan_start, end, loop_top, insn_count, if (v->giv_type == DEST_ADDR && GET_CODE (v->mult_val) == CONST_INT) { -#if defined (HAVE_POST_INCREMENT) || defined (HAVE_PRE_INCREMENT) - if (INTVAL (v->mult_val) == GET_MODE_SIZE (v->mem_mode)) + if (HAVE_POST_INCREMENT + && INTVAL (v->mult_val) == GET_MODE_SIZE (v->mem_mode)) benefit += add_cost * bl->biv_count; -#endif -#if defined (HAVE_POST_DECREMENT) || defined (HAVE_PRE_DECREMENT) - if (-INTVAL (v->mult_val) == GET_MODE_SIZE (v->mem_mode)) + else if (HAVE_PRE_INCREMENT + && INTVAL (v->mult_val) == GET_MODE_SIZE (v->mem_mode)) + benefit += add_cost * bl->biv_count; + else if (HAVE_POST_DECREMENT + && -INTVAL (v->mult_val) == GET_MODE_SIZE (v->mem_mode)) + benefit += add_cost * bl->biv_count; + else if (HAVE_PRE_DECREMENT + && -INTVAL (v->mult_val) == GET_MODE_SIZE (v->mem_mode)) benefit += add_cost * bl->biv_count; -#endif } #endif |