RFR: 8267982: Set the node after peephole optimization to be removed

[SUN Guoyun]

On Tue, 1 Jun 2021 06:37:17 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

>> Hi all,
>> 
>> Enable peephole can cause SIGSEGV sometimes in OopFlow::build_oop_map(Node*, int, PhaseRegAlloc*, int*)+0x238 , so must set a removed-flags for the peephole-nodes , to avoid be set-live-bit() and cause crash.
>>  Please review this trivial change.
>> 
>> Thanks,
>> Sun Guoyun
>
> The PR title needs to match the JIRA bug title (including the bug number). Please also change it to something more descriptive (like the one you had previously).

@TobiHartmann @vnkozlov can you help me ? I made a mistake to closed this PR, but now I can not re-open this PR.
My new commit is  https://github.com/sunny868/jdk/commit/00a73ec58c9102132609765997b47b7f2c409833 .

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PR: https://git.openjdk.java.net/jdk/pull/4276