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Fix budget realloc

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This commit is contained in:
Eddie Hung 2018-07-26 21:35:02 -07:00
parent d5c2332ebf
commit 5622dc0444
1 changed files with 4 additions and 7 deletions
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11
common/timing.cc
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@ -180,10 +180,7 @@ void update_budget(Context *ctx)
// If user has not specified a frequency, adjust the frequency dynamically:
if (!ctx->user_freq) {
if (min_slack < 0)
ctx->target_freq = 1e12 / (default_slack - 0.99 * min_slack);
else
ctx->target_freq = 1e12 / (default_slack - 1.05 * min_slack);
ctx->target_freq = 1e12 / (default_slack - min_slack);
if (ctx->verbose)
log_info("minimum slack for this update = %d, target Fmax for next update = %.2f MHz\n", min_slack,
ctx->target_freq / 1e6);
@ -197,7 +194,7 @@ void update_budget(Context *ctx)
auto it = updates.find(pi);
if (it == updates.end())
continue;
user.budget = ctx->getNetinfoRouteDelay(net.second.get(), i) + it->second;
user.budget = ctx->getNetinfoRouteDelay(net.second.get(), i) - it->second;
// Post-update check
if (ctx->verbose) {
@ -236,8 +233,8 @@ void compute_fmax(Context *ctx, bool print_fmax, bool print_path)
auto net = port.net;
unsigned i = 0;
for (auto &usr : net->users)
if (&usr == sink)
break;
if (&usr == sink) break;
else ++i;
auto &driver = net->driver;
auto driver_cell = driver.cell;
delay_t comb_delay;