c0bbeb0982
With this change, the shift checking code matches the corresponding go/types code, but for the differences in the internal error reporting, and call of check.overflow. The change leads to the recording of an untyped int value if the RHS of a non-constant shift is an untyped integer value. Adjust the type in the compiler's irgen accordingly. Add test/shift3.go to verify behavior. Change-Id: I20386fcb1d5c48becffdc2203081fb70c08b282d Reviewed-on: https://go-review.googlesource.com/c/go/+/398236 Trust: Robert Griesemer <gri@golang.org> Run-TryBot: Robert Griesemer <gri@golang.org> Trust: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Robert Findley <rfindley@google.com>
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