[jdk11u-dev] RFR: 8269795: C2: Out of bounds array load floats above its range check in loop peeling resulting in SEGV

[Martin Doerr]

Backport of JDK-8269795. Doesn't apply cleanly because cleanup change JDK-8223142 is not it 11u. Taken new PhaseIdealLoop::peeled_dom_test_elim which includes the cleanup.

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Commit messages:
 - Backport 040c02b942a2829626b5bc4a63c3335cd3fe53f4

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/166/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=166&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8269795
  Stats: 91 lines in 2 files changed: 73 ins; 2 del; 16 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/166.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/166/head:pull/166

PR: https://git.openjdk.java.net/jdk11u-dev/pull/166