[jdk17u-dev] RFR: 8296389: C2: PhaseCFG::convert_NeverBranch_to_Goto must handle both orders of successors

Wed Jan 11 15:38:37 UTC 2023

I backport this for parity with 17.0.7-oracle.

I added nique_ctrl_out_or_null() to workaround 8281732
missing in 17 in node.hpp
I include 8298568 to not break the build.

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Commit messages:
 - Backport 173778e2fee58e47d35197b78eb23f46154b5b2b
 - 8281732 missing in 17
 - Backport fabda246960cfdfff13c5a87de53d97169248172
 - Backport d562d3fcbe22a0443037c5b447e1a41401275814

Changes: https://git.openjdk.org/jdk17u-dev/pull/1059/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1059&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8296389
  Stats: 213 lines in 11 files changed: 163 ins; 11 del; 39 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1059.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/1059/head:pull/1059

PR: https://git.openjdk.org/jdk17u-dev/pull/1059