RFR: 8282221: x86 intrinsics for divideUnsigned and remainderUnsigned methods in java.lang.Integer and java.lang.Long [v9]

[Vamsi Parasa]

> Optimizes the divideUnsigned() and remainderUnsigned() methods in java.lang.Integer and java.lang.Long classes using x86 intrinsics. This change shows 3x improvement for Integer methods and upto 25% improvement for Long. This change also implements the DivMod optimization which fuses division and modulus operations if needed. The DivMod optimization shows 3x improvement for Integer and ~65% improvement for Long.

Vamsi Parasa has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 13 commits:

 - Merge branch 'openjdk:master' into udivmod
 - add error msg for jtreg test
 - update jtreg test to run on x86_64
 - add bmi1 support check and jtreg tests
 - Merge branch 'master' of https://git.openjdk.java.net/jdk into udivmod
 - fix 32bit build issues
 - Fix line at end of file
 - Move intrinsic code to macro assembly routines; remove unused transformations for div and mod nodes
 - fix trailing white space errors
 - fix whitespaces
 - ... and 3 more: https://git.openjdk.java.net/jdk/compare/741be461...acba7c19

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Changes: https://git.openjdk.java.net/jdk/pull/7572/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7572&range=08
  Stats: 1007 lines in 20 files changed: 1005 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7572.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7572/head:pull/7572

PR: https://git.openjdk.java.net/jdk/pull/7572