RFR: 8263075: C2: simplify anti-dependence check in PhaseCFG::implicit_null_check() [v2]

[Roberto Castañeda Lozano]

On Thu, 19 May 2022 07:20:43 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

> Looks good to me and tests passed. @robcasloz should also have a look.

Running some additional tests, will come back with the results.

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PR: https://git.openjdk.java.net/jdk/pull/8684