tree 2966de1b868bb0b3a034a20b6841a2f9304fbea4
parent 10839444701bbe731953b55bc3f1fa3e901f9b28
author Peter Collingbourne <peter@pcc.me.uk> 1559592865 +0000
committer Peter Collingbourne <peter@pcc.me.uk> 1559592865 +0000

ELF: Introduce a separate bit for tracking whether an output section has ever had an input section added to it. NFCI.

We currently (ab)use the Live bit on output sections to track whether
the section has ever had an input section added to it, and then later
use it during orphan placement. This will conflict with one of my upcoming
partition-related changes that will assign all output sections to a partition
(thus marking them as live) so that they can be added to the correct segment
by the code that creates program headers.

Instead of using the Live bit for this purpose, create a new flag and
start using it to track the property explicitly.

Differential Revision: https://reviews.llvm.org/D62348

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@362444 91177308-0d34-0410-b5e6-96231b3b80d8