JDK 9 RFR of JDK-8132854: Adjust tier 1 and 2 definitions for nio-related intrinsics

[joe darcy]

Hello,

With the fix for

         JDK-8076112: Add @HotSpotIntrinsicCandidate annotation to 
indicate methods for which Java Runtime has intrinsics

the sources for the libraries clearly indicate which methods might have 
intrinsic support in HotSpot, that is, which methods might have their 
Java source implementation replaced by some other code sequence 
maintained in HotSpot, such as a special-purpose processor-specific 
instruction.

To ease testing, it would be help if all the intrinsified methods were 
included in the tier 1 test group. Most of the intrinics are in 
java.lang, java.math, and java.util, packages whose tests are already in 
tier 1. Two nio-related classes are marked with @HotSpotIntrinsicCandidate:

     ./java.base/share/classes/sun/nio/cs/ISO_8859_1.java # 
implEncodeISOArray marked
     ./java.base/share/classes/java/nio/Buffer.java # index check

Therefore, I propose moving the tests that directly cover those areas to 
tier 1:

--- a/test/TEST.groups    Mon Aug 03 09:25:02 2015 +0800
+++ b/test/TEST.groups    Sun Aug 02 20:16:00 2015 -0700
@@ -28,11 +28,15 @@
  tier1 = \
      :jdk_lang \
      :jdk_util \
+    sun/nio/cs/ISO8859x.java \
+    java/nio/Buffer \
      :jdk_math

  tier2 = \
      :jdk_io \
      :jdk_nio \
+    -sun/nio/cs/ISO8859x.java \
+    -java/nio/Buffer \
      :jdk_net \
      :jdk_time \
      :jdk_security \

Full webrev at

     http://cr.openjdk.java.net/~darcy/8132854.0/

Thanks,

-Joe