RFR: 8277324: C2 compilation fails with "bad AD file" on x86-32 after JDK-8276162 due to missing match rule [v2]

[Tobias Hartmann]

> [JDK-8276162](https://bugs.openjdk.java.net/browse/JDK-8276162) introduced an optimization that creates `CMoveI (Bool (CmpUL ...) ...)` shapes but x86-32 misses the corresponding match rules in C2's backend.
> 
> I also fixed two comments incorrectly referring to ints instead of ptrs.
> 
> Thanks,
> Tobias

Tobias Hartmann has updated the pull request incrementally with one additional commit since the last revision:

  Use expand

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6427/files
  - new: https://git.openjdk.java.net/jdk/pull/6427/files/8b315cdc..1e55fd19

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6427&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6427&range=00-01

  Stats: 34 lines in 1 file changed: 0 ins; 10 del; 24 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6427.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6427/head:pull/6427

PR: https://git.openjdk.java.net/jdk/pull/6427