tree 52697d814d0d0fa7f4a19db456c0d7f24e8beeb8
parent d1fa6c34e56eade6fb5b6291f0a727b1a12bf6f1
author Ian Lance Taylor <iant@golang.org> 1569564764 -0700
committer Ian Lance Taylor <iant@golang.org> 1569605664 +0000

compiler: only check whether struct or array types are big

Fetching the size of a type typically involves a hash table lookup,
and is generally non-trivial.  The escape analysis code calls is_big
more than one might expect.  So only fetch the size if we need it.

Change-Id: I44f28030f75c3e993020932631eea46fc6158b30
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/197699
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>