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expmed.c (expand_divmod): Ignore sdiv_pow2_cheap for modes in which there is no divide expander.

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* expmed.c (expand_divmod): Ignore sdiv_pow2_cheap for modes in
        which there is no divide expander.

From-SVN: r47916
This commit is contained in:
Richard Henderson 2001-12-11 19:00:01 -08:00 committed by Richard Henderson
parent 98ce21b3b3
commit a8c7e72da2
2 changed files with 15 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2001-12-11 Richard Henderson <rth@redhat.com>
* expmed.c (expand_divmod): Ignore sdiv_pow2_cheap for modes in
which there is no divide expander.
2001-12-11 Richard Henderson <rth@redhat.com>
* except.c (sjlj_find_directly_reachable_regions): Don't

11
gcc/expmed.c
View File

@ -3271,7 +3271,16 @@ expand_divmod (rem_flag, code, mode, op0, op1, target, unsignedp)
goto fail1;
}
else if (EXACT_POWER_OF_2_OR_ZERO_P (d)
&& (rem_flag ? smod_pow2_cheap : sdiv_pow2_cheap))
&& (rem_flag ? smod_pow2_cheap : sdiv_pow2_cheap)
/* ??? The cheap metric is computed only for
word_mode. If this operation is wider, this may
not be so. Assume true if the optab has an
expander for this mode. */
&& (((rem_flag ? smod_optab : sdiv_optab)
->handlers[(int) compute_mode].insn_code
!= CODE_FOR_nothing)
|| (sdivmod_optab->handlers[(int) compute_mode]
.insn_code != CODE_FOR_nothing)))
;
else if (EXACT_POWER_OF_2_OR_ZERO_P (abs_d))
{