cmd/link: move cgo export map from loadcgo to setCgoAttr

Currently, both loadcgo and setCgoAttr do some processing of
cgo_export_static and cgo_export_dynamic cgo directives, which means
they both have to parse them. There's no reason to do this in loadcgo,
so move all directive processing to setCgoAttr.

For #40724.

Change-Id: Icb3cdf7ef3517e866dd220e40a5f5dec7fd47e2b
Reviewed-on: https://go-review.googlesource.com/c/go/+/309339
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2 files changed
tree: 9892a4d1d242c2db96797a6ce0add4aca0a98486
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. codereview.cfg
  12. CONTRIBUTING.md
  13. CONTRIBUTORS
  14. LICENSE
  15. PATENTS
  16. README.md
  17. SECURITY.md
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