[jdk8u-dev] RFR: 8317507: C2 compilation fails with "Exceeded _node_regs array"

[Martin Balao]

Hi,

I'd like to propose this backport to 8u-dev. The 17u/11u fix does not apply cleanly: 8u does not have either 8054033 or 8034812 so the `Compiler` reference is passed by parameter instead of taken from the `Compile::current` method. I ran and debugged the test to make sure that it is triggering the faulty behavior.

Thanks,
Martin.-

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Commit messages:
 - 8317507: C2 compilation fails with "Exceeded _node_regs array"

Changes: https://git.openjdk.org/jdk8u-dev/pull/470/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=470&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317507
  Stats: 601 lines in 2 files changed: 601 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/470.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/470/head:pull/470

PR: https://git.openjdk.org/jdk8u-dev/pull/470