cmd/compile: eagerly CalcStructSize for synthetic ABI types

The next CL is going to replace Type.Width with Type.Size(), but
Type.Size() isn't safe to call concurrently. So this CL calls
CalcStructSize, which *is* allowed to be used concurrently, but then
it's the caller's responsibility to ensure it's called right after
NewStruct.

Change-Id: If9cd81650ccb3a867b4449af757375fa56227901
Reviewed-on: https://go-review.googlesource.com/c/go/+/345483
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
1 file changed
tree: 9faca4389a0570d9e42bc2c2f80e1cfcc9340f1a
  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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