From 52cc146a67346f8a797d1ea133c7757a7330992d Mon Sep 17 00:00:00 2001 From: Eddie Hung Date: Sat, 28 Jul 2018 22:57:37 -0700 Subject: Keep things simple by not overconstraining Fmax --- common/timing.cc | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'common') diff --git a/common/timing.cc b/common/timing.cc index c6e2b037..c9e1cabd 100644 --- a/common/timing.cc +++ b/common/timing.cc @@ -158,13 +158,10 @@ void assign_budget(Context *ctx, bool quiet) } } - // If user has not specified a frequency, adjust the target frequency dynamically - // TODO(eddieh): Tune these factors + // If user has not specified a frequency, dynamically adjust the target + // frequency to be the current maximum if (!ctx->user_freq) { - if (min_slack < 0) - ctx->target_freq = 1e12 / (default_slack - 0.95 * min_slack); - else - ctx->target_freq = 1e12 / (default_slack - 1.2 * min_slack); + ctx->target_freq = 1e12 / (default_slack - 1.2 * min_slack); if (ctx->verbose) log_info("minimum slack for this assign = %d, target Fmax for next update = %.2f MHz\n", min_slack, ctx->target_freq / 1e6); -- cgit v1.2.3