diff options
| author | Torbjorn Granlund <tege@gnu.org> | 1993-11-01 11:18:32 +0000 |
|---|---|---|
| committer | Torbjorn Granlund <tege@gnu.org> | 1993-11-01 11:18:32 +0000 |
| commit | c0b262c16625f8e9650ce58fb299d1cef5383dbd (patch) | |
| tree | 3870eeba4a27d83f8e0c0634e47cf6adcfd74cd3 /gcc | |
| parent | 9022605c7e857267d092cfc3fc552fd1b08d94fb (diff) | |
| download | gcc-c0b262c16625f8e9650ce58fb299d1cef5383dbd.zip gcc-c0b262c16625f8e9650ce58fb299d1cef5383dbd.tar.gz gcc-c0b262c16625f8e9650ce58fb299d1cef5383dbd.tar.bz2 | |
(synth_mult): When factoring T, break from loop after first factor.
(expand_mult): Increase max cost to 12 again.
From-SVN: r5961
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/expmed.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index b340b6d..fe8eb27 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -1971,6 +1971,8 @@ synth_mult (alg_out, t, cost_limit) best_alg->op[best_alg->ops] = alg_add_factor; cost_limit = cost; } + /* Other factors will have been taken care of in the recursion. */ + break; } d = ((unsigned HOST_WIDE_INT) 1 << m) - 1; @@ -1988,6 +1990,7 @@ synth_mult (alg_out, t, cost_limit) best_alg->op[best_alg->ops] = alg_sub_factor; cost_limit = cost; } + break; } } @@ -2103,7 +2106,7 @@ expand_mult (mode, op0, op1, target, unsignedp) vice versa. */ mult_cost = rtx_cost (gen_rtx (MULT, mode, op0, op1), SET); - mult_cost = MIN (8 * add_cost, mult_cost); + mult_cost = MIN (12 * add_cost, mult_cost); synth_mult (&alg, val, mult_cost); synth_mult (&neg_alg, - val, |