[pull] master from verilog-to-routing:master #565
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…unts into a local/static helper function
Being based off the packer, APPack also uses iterative re-packing when a dense enough clustering cannot be found. APPack has some special options that it can use to increase the density of clustering further without hurting quality as much as the default flow. Updated the iterative re-packing algorithm to use these options if needed. Having this safer fall-back has allowed me to tune some numbers that I knew would improve the quality of most circuits but was causing a few circuits to fail packing. These few that were failing should now hit this fall-back paths which resolves this issue.
I expect the sanitized test to be the tall pole for the speed of the CI due to its long run time on the testcases. After investigating with Vaughn, we realized that this test was using the debug build of VTR. This was likely making it much slower than it needed to be. To improve the speed of this test, moved it to use the release build. We still want symbols to give good error messages.
…packing [APPack] Iterative Re-Packing
Add CHANZ type
The compatibility CI builds are taking longer than expected, especially for the GCC builds. They appear to be having issues with CCache. Trying to clean up the tests to speed them up. Removed the GCC-11 compatibility test since it was already being tested in the Jammy compatibility test. Removed Odin from the compatibility test since it is not the default flow. Cleaned up some enviornment variables. I found that using a release build caches much better than a debug build. This ends up saving way more time than we gain from using a debug build.
Stage reporting update
…anup [CI] Moved Sanitized Test from Debug to RelWithDebInfo
Flat Routing Visualization
…ng_cost Fix divison by zero when the timing cost is zero
[Build] Updated VTR Versioning
…t-builds [CI] Speeding Up Compatibility Builds
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