RFR: 8280003: C1: Reconsider uses of logical_and immediates in LIRGenerator::do_getObjectSize [v6]

[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 with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains ten additional commits since the last revision:

 - Merge branch 'master' into JDK-8280003-c1-logical-and
 - Revert ARM32 checks
 - Merge branch 'master' into JDK-8280003-c1-logical-and
 - Fixing failures in ARM32
 - Merge branch 'master' into JDK-8280003-c1-logical-and
 - Checking ARM32 code
 - Use checked_cast<jint>
 - Merge branch 'master' into JDK-8280003-c1-logical-and
 - Fix

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7080/files
  - new: https://git.openjdk.java.net/jdk/pull/7080/files/784cff46..efc32767

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7080&range=05
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7080&range=04-05

  Stats: 210360 lines in 3058 files changed: 147466 ins; 50236 del; 12658 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