Add symbiflow-vtr-optimized with PGO enabled

[HackerFoo]

This builds VPR, and then collects profile data, and uses that to compile VPR again with profile-guided optimization.

[HackerFoo]

This task runs in parallel with the first build, so that downloading and unpacking the SymbiFlow install package doesn't take any additional time.

[litghost]

The eblif should be either sourced from another repo, or compressed.

[litghost]

Comments in

[HackerFoo]

The eblif should be either sourced from another repo, or compressed.

The eblif is compressed now (180KB).

[HackerFoo]

The symbiflow-vtr-optimized package builds successfully with conda build on my machine.

[HackerFoo]

I've added an issue to update this after verilog-to-routing/vtr-verilog-to-routing#1564 is merged: #155

[litghost]

Couple things.

stdout is too long. Consider piping to a file and greping for error/warnings, etc? Or just redirect to a file and output something when an error occurs?

CI is red:

The job exceeded the maximum time limit for jobs, and has been terminated.

This may be because of the stdout length?

[mithro]

The job exceeded the maximum time limit for jobs, and has been terminated.

GitHub Actions has significantly more powerful hardware and a much longer timeout, so I think we might want to wait until after that is landed so we can take advantage of that?

[HackerFoo]

This PR is superseded by hdl/conda-eda#60