Integrated: 8281553: Ensure we only require liveness from mach-nodes with barriers

[Emanuel Peter]

On Wed, 9 Feb 2022 17:42:09 GMT, Emanuel Peter <duke at openjdk.java.net> wrote:

> Adding NULL check. This also ensures we are not returning a NULL reference.
> 
> Ran tests to ensure assert is never triggered.

This pull request has now been integrated.

Changeset: c61d629a
Author:    Emanuel Peter <emanuel.peter at oracle.com>
Committer: Christian Hagedorn <chagedorn at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/c61d629add65f9c25f73c335f2a3c5095da5be52
Stats:     3 lines in 1 file changed: 2 ins; 0 del; 1 mod

8281553: Ensure we only require liveness from mach-nodes with barriers

Reviewed-by: neliasso, chagedorn

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PR: https://git.openjdk.java.net/jdk/pull/7407