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| author | David Shah <dave@ds0.me> | 2019-02-25 11:56:10 +0000 |
|---|---|---|
| committer | David Shah <dave@ds0.me> | 2019-03-22 10:31:54 +0000 |
| commit | 7142db28a8b828da557729a706c20c8f330ba129 (patch) | |
| tree | ad9898be5e31227bcfeabde06b4c24c5455d143b /common/timing_opt.cc | |
| parent | 1c824709e21b18073bfdc182793351e40269c373 (diff) | |
| download | nextpnr-7142db28a8b828da557729a706c20c8f330ba129.tar.gz nextpnr-7142db28a8b828da557729a706c20c8f330ba129.tar.bz2 nextpnr-7142db28a8b828da557729a706c20c8f330ba129.zip | |
HeAP: Make HeAP placer optional
A CMake option 'BUILD_HEAP' (default on) configures building of the
HeAP placer and the associated Eigen3 dependency.
Default for the iCE40 is SA placer, with --heap-placer to use HeAP
Default for the ECP5 is HeAP placer, as SA placer can take 1hr+ for
large ECP5 designs and HeAP tends to give better QoR. --sa-placer can
be used to use SA instead, and auto-fallback to SA if HeAP not built.
Signed-off-by: David Shah <dave@ds0.me>
Diffstat (limited to 'common/timing_opt.cc')
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