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| author | Richard Henderson <rth@redhat.com> | 2001-12-11 19:00:01 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2001-12-11 19:00:01 -0800 |
| commit | a8c7e72da252fa6d01037d70d9bf24f9af37b07d (patch) | |
| tree | 33bcb4fa6a02617cfdb400f1965f75f861fee372 | |
| parent | 98ce21b3b388f4f93b1926c1bac451ead787292a (diff) | |
| download | gcc-a8c7e72da252fa6d01037d70d9bf24f9af37b07d.zip gcc-a8c7e72da252fa6d01037d70d9bf24f9af37b07d.tar.gz gcc-a8c7e72da252fa6d01037d70d9bf24f9af37b07d.tar.bz2 | |
expmed.c (expand_divmod): Ignore sdiv_pow2_cheap for modes in which there is no divide expander.
* expmed.c (expand_divmod): Ignore sdiv_pow2_cheap for modes in
which there is no divide expander.
From-SVN: r47916
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/expmed.c | 11 |
2 files changed, 15 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 95d55b1..47d63a6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 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 consider RNL_BLOCKED a directly reachable region. (sjlj_assign_call_site_values): Trust directly_reachable. diff --git a/gcc/expmed.c b/gcc/expmed.c index 8a7b6b9..8eecca3 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -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)) { |