RFR: 8256535: C2: randomize CCP processing order for stress testing

Tue Dec 15 08:38:13 UTC 2020

On Mon, 14 Dec 2020 12:36:37 GMT, Roberto Castañeda Lozano <rcastanedalo at openjdk.org> wrote:

>> Add `StressCCP` option to randomize the selection of the node to be examined in each CCP iteration.
>
> Add 'StressCCP' option to randomize the selection of the node to be examined in
> each CCP iteration.

Tested with:

-  test cases updated in this change (`TestStressOptions.java`, `TestGenerateStressSeed.java`, `TestStressIGVNAndCCP.java`)
- 20 repetitions of the `hotspot_compiler` test group with `-XX:+StressCCP`

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PR: https://git.openjdk.java.net/jdk/pull/1765