RFR: 8005885: enhance PrintCodeCache to print more data [v3]

[Yi-Fan Tsai]

> An example of the modified data.
> 
> java -XX:+TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:+PrintCodeCache -XX:+Verbose
> 
> Tier 0:
>  #45 live = 38K (hdr 16K, loc 4K, code 18K, stub 0K, [oops 0K, metadata 0K, data 0K, pcs 0K])
>  #0 dead = 0K
> Tier 1:
>  #56 live = 43K (hdr 20K, loc 3K, code 9K, stub 4K, [oops 0K, metadata 0K, data 0K, pcs 3K])
>  #0 dead = 0K
> Tier 2:
>  #0 live = 0K
>  #0 dead = 0K
> Tier 3:
>  #306 live = 773K (hdr 109K, loc 61K, code 354K, stub 37K, [oops 0K, metadata 6K, data 67K, pcs 122K])
>  #0 dead = 0K
> Tier 4:
>  #37 live = 110K (hdr 13K, loc 6K, code 43K, stub 1K, [oops 0K, metadata 1K, data 13K, pcs 28K])
>  #0 dead = 0K
> Stubs:
>  #60 runtime = 34K (hdr 7K, loc 1K, code 24K, stub 0K, [oops 0K, metadata 0K, data 0K, pcs 0K])
>  #1 uncommon trap = 0K (hdr 0K, loc 0K, code 0K, stub 0K, [oops 0K, metadata 0K, data 0K, pcs 0K])
>  #1 deoptimization = 1K (hdr 0K, loc 0K, code 1K, stub 0K, [oops 0K, metadata 0K, data 0K, pcs 0K])
>  #667 adapter = 512K (hdr 78K, loc 45K, code 376K, stub 0K, [oops 0K, metadata 0K, data 0K, pcs 0K])
>  #17 buffer blob = 3163K (hdr 1K, loc 0K, code 3161K, stub 0K, [oops 0K, metadata 0K, data 0K, pcs 0K])
>  #4 other = 2K (hdr 0K, loc 0K, code 1K, stub 0K, [oops 0K, metadata 0K, data 0K, pcs 0K])

Yi-Fan Tsai has updated the pull request incrementally with one additional commit since the last revision:

  Add back percentage and change descriptions

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7389/files
  - new: https://git.openjdk.java.net/jdk/pull/7389/files/2afb2938..09583321

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7389&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7389&range=01-02

  Stats: 33 lines in 1 file changed: 17 ins; 0 del; 16 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7389.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7389/head:pull/7389

PR: https://git.openjdk.java.net/jdk/pull/7389