tree bbcbf3828382dfe0435bed9f504f3b56c36340e1
parent 76dd01f45786757a08f1e070245d174cd64559be
author Robert Griesemer <gri@golang.org> 1634692170 -0700
committer Robert Griesemer <gri@golang.org> 1634937990 +0000

cmd/compile/internal/types2: more detailed error messages for generic conversions

- slightly refactor convertibleTo and convertibleToImpl
- provide ability to return a conversion failure cause
- add detailed cause for generic conversions

For #47150.

Change-Id: Ie97d89be0234414ef4df22a6920e18acc944a102
Reviewed-on: https://go-review.googlesource.com/c/go/+/357249
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>