Vector coverage update and Vf running

[georgiatai]

Bringing back most of Vx coverage (left with 2 instructions that are not 100%) and Vf running.

The stuff in RISCV_coverage_common.svh are kept as comment instead of delete because these reference might come in handy when generating config files from UDB.

[Copilot]

Pull request overview

This PR aims to restore/expand vector functional coverage (“Vx” and “Vf”) by updating the vector test generator and multiple coverage templates, plus small adjustments to signature region handling and shared coverage macros.

Changes:

• Update vector test generation logic (signature update macros/args, mask generation, testplan expansion for Vf effew variants).
• Adjust unprivileged vector testgen coverpoint inclusion mapping and unsupported test list handling.
• Revise multiple coverage templates for widening/overlap coverpoints and XLEN-conditional sections; keep some shared ELEN selection logic as comments.

Reviewed changes

Copilot reviewed 3 out of 13 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/env/test_setup.h	Removes RVTEST_VECTOR-only alignment before signature_base.
generators/testgen/scripts/vector_testgen_common.py	Updates template metadata, signature update register selection, mask generation op, and Vf testplan handling.
generators/testgen/scripts/vector-testgen-unpriv.py	Updates unsupported tests list, expands coverpoint inclusions for widening overlap, and changes initial vl setup emission.
generators/coverage/templates/cp_custom_wwv_all.txt	Adjusts bins for vs1 modulo coverpoints used in widening overlap scenarios.
generators/coverage/templates/cp_custom_wwv.txt	Same as above for non-“all” variant.
generators/coverage/templates/cp_custom_wvx_all.txt	Simplifies overlap/no-overlap coverpoints and updates bins/crosses.
generators/coverage/templates/cp_custom_wvx.txt	Same as above for non-“all” variant (contains a bin-name typo).
generators/coverage/templates/cp_custom_wvv_all.txt	Updates modulo bins and revises no-overlap/unaligned coverpoints used in crosses.
generators/coverage/templates/cp_custom_wvv.txt	Same as above for non-“all” variant.
generators/coverage/templates/cp_custom_vindexVX_sew8.txt	Updates XLEN guards and rs1 target literal width (currently incorrect for XLEN64).
generators/coverage/templates/cp_custom_vindexVX_sew32.txt	Updates XLEN guard and fixes rs1 target literal width for XLEN64.
generators/coverage/templates/cp_custom_vindexVX_sew16.txt	Updates XLEN guards and rs1 target literal widths.
framework/src/act/fcov/coverage/RISCV_coverage_common.svh	Comments out ELEN selection blocks (kept for future reference/config generation).

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[davidharrishmc]

One minor Copilot suggestion and then looks good.