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| author | Daniel Jacobowitz <dan@debian.org> | 2004-09-13 23:25:12 +0000 |
|---|---|---|
| committer | Daniel Jacobowitz <drow@gcc.gnu.org> | 2004-09-13 23:25:12 +0000 |
| commit | 3ab0f29005da8dbc7a51fd8a995559e1b40f88e7 (patch) | |
| tree | 5241e18372b0806679b1ea09b8e21501d956f9b3 /gcc | |
| parent | 6674a6ce49dc1cba7ca46cdd9cf4a62ede556568 (diff) | |
| download | gcc-3ab0f29005da8dbc7a51fd8a995559e1b40f88e7.zip gcc-3ab0f29005da8dbc7a51fd8a995559e1b40f88e7.tar.gz gcc-3ab0f29005da8dbc7a51fd8a995559e1b40f88e7.tar.bz2 | |
expmed.c (synth_mult): Initialize latency.
* expmed.c (synth_mult): Initialize latency. Check cost before
checking ops count.
From-SVN: r87456
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/expmed.c | 9 |
2 files changed, 10 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5609638..419c409 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-09-13 Daniel Jacobowitz <dan@debian.org> + + * expmed.c (synth_mult): Initialize latency. Check cost before + checking ops count. + 2004-09-26 Kenneth Zadeck <Kenneth.Zadeck@NaturalBridge.com> diff --git a/gcc/expmed.c b/gcc/expmed.c index eb8226d..232381f 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -2247,6 +2247,7 @@ synth_mult (struct algorithm *alg_out, unsigned HOST_WIDE_INT t, /* Indicate that no algorithm is yet found. If no algorithm is found, this value will be returned and indicate failure. */ alg_out->cost.cost = cost_limit->cost + 1; + alg_out->cost.latency = cost_limit->latency + 1; if (cost_limit->cost < 0 || (cost_limit->cost == 0 && cost_limit->latency <= 0)) @@ -2516,15 +2517,15 @@ synth_mult (struct algorithm *alg_out, unsigned HOST_WIDE_INT t, } } + /* If best_cost has not decreased, we have not found any algorithm. */ + if (!CHEAPER_MULT_COST (&best_cost, cost_limit)) + return; + /* If we are getting a too long sequence for `struct algorithm' to record, make this search fail. */ if (best_alg->ops == MAX_BITS_PER_WORD) return; - /* If best_cost has not decreased, we have not found any algorithm. */ - if (!CHEAPER_MULT_COST (&best_cost, cost_limit)) - return; - /* Copy the algorithm from temporary space to the space at alg_out. We avoid using structure assignment because the majority of best_alg is normally undefined, and this is a critical function. */ |