tree 6ed0e7fe6a724b07c6c6e84fe24905a209b6eb2d
parent 70ed28e5f763d08ee0d3be7bde14b35ce3d6322e
author Cherry Zhang <cherryyz@google.com> 1618157253 -0400
committer Cherry Zhang <cherryyz@google.com> 1618247329 +0000

cmd/compile: preserve name association when eliding copies in expand_calls

If v is a Copy of x, we will rewrite v to x. If v has a name
associated to it, let the name associate to x.

Under register ABI, this helps associate in-register Arg values
to the parameters' names. (But does not address all cases.)

Change-Id: I47c779e56c9d0823a88890497e32326bc0290f82
Reviewed-on: https://go-review.googlesource.com/c/go/+/309330
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>