| commit | 9d0b88cb29fcc3395f0f2307c04a19603e4e9bd6 | [log] [tgz] |
|---|---|---|
| author | Srikrishna Iyer <sriyer@google.com> | Fri Jun 11 00:25:02 2021 -0700 |
| committer | Srikrishna Iyer <46467186+sriyerg@users.noreply.github.com> | Fri Jun 11 12:31:30 2021 -0700 |
| tree | 9a5eb4804a2514e853d0ef0e1f3dd4ccd76fdff3 | |
| parent | 37efb88c5f3c3a15c13ea1550c6fd93ae19e0631 [diff] |
[doc] Fix the functional coverage requirements Previously, the coverpoints and crosses were computed separately and averaged to show the final covergroup coverage score. To illustrate with an example, if a covergroup had a cp with 90% coverage and cr with 50%, it would compute the total score as 90+50/2 = 70%. This could be misleading, becuase the cross could have orders of magnitude more bins to cover than the coverpoint. With `-group ratio` enabled in the previous commit, the coverge score is computed more realistically as total bins covered in all coverpoints and crosses / total bins in all coverpoints and crosses, which gives a more realistic picture of the remaining work to be done. But the side effect of that is the tool no longer provides a separate score for coverpoints and crosses. Hence, we need to update the V2 and V3 functional coverage criteria to look at the overall score instead. Signed-off-by: Srikrishna Iyer <sriyer@google.com>
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