tree ac13372ad74b9f72623fd62ae2186738f72ab5d6
parent 13c98c3477647888fc7a186e9055793b0961e806
author Than McIntosh <thanm@google.com> 1551890549 -0500
committer Ian Lance Taylor <iant@golang.org> 1551904795 +0000

compiler: emit underlying constant in array_type length export

In Array_type::do_export, when emitting a concrete array length,
evaluate the length expression to an integer constant and emit that
constant, instead of calling the more general method for emitting
expressions. This is to avoid the possibility that we will need
to emit a conversion, which could confuse the gccgoimporter.

Fixes golang/go#30628.

Change-Id: Idfa5057256fe6997d08f7de81d853fc873f95eb8
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/165741
Reviewed-by: Ian Lance Taylor <iant@golang.org>