RFR: 8280003: C1: Reconsider uses of logical_and immediates in LIRGenerator::do_getObjectSize [v5]

[Aleksey Shipilev]

> See the discussion in the bug.
> 
> Additional testing:
>  - [x] Linux x86_64 fastdebug `java/lang/instrument`
>  - [x] Linux x86_32 fastdebug `java/lang/instrument`
>  - [x] Linux AArch64 fastdebug `java/lang/instrument`
>  - [x] Linux ARM32 fastdebug `java/lang/instrument`
>  - [x] Linux PPC64 fastdebug `java/lang/instrument`
>  - [x] Linux x86_64 fastdebug `tier1`
>  - [x] Linux x86_32 fastdebug `tier1`
>  - [x] Linux AArch64 fastdebug `tier1`
>  - [x] Linux PPC64 fastdebug `tier1`

Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:

  Revert ARM32 checks

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7080/files
  - new: https://git.openjdk.java.net/jdk/pull/7080/files/f2331d05..784cff46

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7080&range=04
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7080&range=03-04

  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7080.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7080/head:pull/7080

PR: https://git.openjdk.java.net/jdk/pull/7080