tree 0f5db7a0079ca3af4a08e6d6c6030765f1082a19
parent 7f753feb8df400d6ed17cdbdfb364f7f3a42fb31
author Than McIntosh <thanm@google.com> 1561503189 -0400
committer Ian Lance Taylor <iant@golang.org> 1562115364 +0000

compiler: rework type and package tracking in exporter

Revamps the way the exporter tracks exported types and imported
packages that need to be mentioned in the export data.

The previous implementation wasn't properly handling the case where an
exported non-inlinable function refers to an imported type whose
method set includes an inlinable function whose body makes a call to a
function in another package that's not directly used in the original
package.

This patch integrates together two existing traversal helper classes,
"Collect_references_from_inline" and "Find_types_to_prepare" into a
single helper "Collect_export_references", so as to have common/shared
code that looks for indirectly imported packages.

Fixes golang/go#32778

Change-Id: Ice4bf2f7aac5bcf9b9cc2f29d72597b08714eef7
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/183850
Reviewed-by: Ian Lance Taylor <iant@golang.org>