cmd/compile: introduce special ssa Aux type for calls

This is prerequisite to moving call expansion later into SSA,
and probably a good idea anyway.  Passes tests.

This is the first minimal CL that does a 1-for-1 substitution
of *ssa.AuxCall for *obj.LSym.  Next step (next CL) is to make
this change for all calls so that additional information can
be stored in AuxCall.

Change-Id: Ia3a7715648fd9fb1a176850767a726e6f5b959eb
Reviewed-on: https://go-review.googlesource.com/c/go/+/237680
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
27 files changed
tree: 797af18469a87f78659d0678295e4465e7e2a2c0
  1. .gitattributes
  2. .github/
  3. .gitignore
  4. AUTHORS
  5. CONTRIBUTING.md
  6. CONTRIBUTORS
  7. LICENSE
  8. PATENTS
  9. README.md
  10. SECURITY.md
  11. api/
  12. doc/
  13. favicon.ico
  14. lib/
  15. misc/
  16. robots.txt
  17. src/
  18. test/
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