[jdk8u-dev] RFR: 8311813: C1: Uninitialized PhiResolver::_loop field [v2]

[Chad Rakoczy]

> [JDK-8311813](https://bugs.openjdk.org/browse/JDK-8311813)
> 
> Initialize `PhiResolver::_loop` field to `nullptr`
> 
> Clean backport

Chad Rakoczy has updated the pull request incrementally with one additional commit since the last revision:

  Change nullptr to NULL

-------------

Changes:
  - all: https://git.openjdk.org/jdk8u-dev/pull/369/files
  - new: https://git.openjdk.org/jdk8u-dev/pull/369/files/d1233fd4..daff8417

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=369&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=369&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/369.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/369/head:pull/369

PR: https://git.openjdk.org/jdk8u-dev/pull/369