cmd/compile: plumb PGO profile through inliner and body reader

During inlining of instantiations of imported generic functions,
the compiler reads the generic function body which can trigger
CanInlineFuncs on newly instantiated functions. Currently, on
this code path CanInlineFuncs is called with a nil profile, even
if PGO is enabled, which causes some inconsistency. In particular,
with newinliner, CanInlineFuncs calls analyzeFuncProps, which
calls inlheur.AnalyzeFunc, which calls revisitInlinability, which
could set fn.Inl to nil if it determined it is not inlineable
(without the profile) whereas the function is actually to be
inlined (because of PGO). This causes compiler crash. Fix this by
plumbing the profile through.

Fixes #80064.

Change-Id: Ifd6b93ba4cbfae1f65334e1338ef23ef8ead0b57
Reviewed-on: https://go-review.googlesource.com/c/go/+/793042
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
3 files changed
tree: 636af271c9ebded29d503828f70f53cfa50bd364
  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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