cmd/compile: expose ir.Func to ssa

ssagen.ssafn already holds the ir.Func, and ssa.Frontend.SetWBPos and
ssa.Frontend.Lsym are simple wrappers around parts of the ir.Func.

Expose the ir.Func through ssa.Frontend, allowing us to remove these
wrapper methods and allowing future access to additional features of the
ir.Func if needed.

While we're here, drop ssa.Frontend.Line, which is unused.

For #58298.

Change-Id: I30c4cbd2743e9ad991d8c6b388484a7d1e95f3ae
Reviewed-on: https://go-review.googlesource.com/c/go/+/484215
Auto-Submit: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
5 files changed
tree: 0177a6db0372c311d93eca479126f4f296d30758
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. codereview.cfg
  11. CONTRIBUTING.md
  12. go.env
  13. LICENSE
  14. PATENTS
  15. README.md
  16. SECURITY.md
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