tree 0f162ae944b8869194b7b6116b9033ee521fcdfb
parent e7e2b1c2b91320ef0ddf025d330061d56115dd53
author Matthew Dempsky <mdempsky@google.com> 1568171211 -0700
committer Matthew Dempsky <mdempsky@google.com> 1568244791 +0000

cmd/compile: move duplicate type-case checking into typecheck

Part of the general trend of moving yyerror calls out of walk and into
typecheck.

Notably, this requires splitting test/typeswitch2.go into two files,
because now some of the errors are reported during typecheck and
others are still reported during walk; and if there were any errors
during typecheck, then cmd/compile exits without invoking walk.

Passes toolstash-check.

Change-Id: I05ee0c00b99af659ee1eef098d342d0d736cf31e
Reviewed-on: https://go-review.googlesource.com/c/go/+/194659
Reviewed-by: Robert Griesemer <gri@golang.org>