SROA: Do not generate GEPs when direct address is available

[vaivaswatha]

Fixes #7433

[vaivaswatha]

I've also added a CLI flag to specify running the verifier after passes, that works quite similarly to the IR printing flag.

This flag isn't enabled in the CI though, yet. I'll do that as a separate PR (possibly after fixing issues, if any found, because of the verifier failing)

[codspeed-hq]

CodSpeed Performance Report

Merging #7457 will not alter performance

_{Comparing vaivaswatha/sroa_gep_fix (40c324f) with master (00b9d02)}

Summary

✅ 25 untouched

[vaivaswatha]

This flag isn't enabled in the CI though, yet. I'll do that as a separate PR (possibly after fixing issues, if any found, because of the verifier failing)

I've enabled the flag now, and there aren't any failures, so we could have it as part of this PR itself.