tree ca9dcd0cd83fab58989b1e9ac4505eb7a42c3635
parent 7008302f1f0eaa9508b2857185505d4dc7baac1e
author Cherry Zhang <cherryyz@google.com> 1529952906 -0400
committer Ian Lance Taylor <iant@golang.org> 1529965387 +0000

compiler: improve escape analysis

This CL ports recent enhancements of the escape analysis in the
gc compiler to gofrontend.

- CL 99335: unnamed receiver should not escape.

- CL 105257: propagate loop depth to field. This prevents it
  from escaping when a field's address is taken inside a loop
  (but not otherwise escape).

- CL 107597: use element type for "indirection" of slice/string.
  This prevents the slice/string from escaping when only the
  element, in case that it is pointerless, flows to outer scope.

Change-Id: I19d7e700e0384fc352dbef4c9e3d73915df6d106
Reviewed-on: https://go-review.googlesource.com/120760
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>