During investigation of old bug 4939638 I found the next regression
caused by 20061023120554.jrose.dolphin-cleanups putback.
I attached the java file and the class file compiled by jikes.

hsdev-5% cp_prt6 20061020142756.sgoldman.6481940/ i486 2 product
hsdev-5% gamma -XX:LoopUnrollLimit=0 -XX:LoopOptsCount=0 Micro
Reflection: test(10) x 10000000
  elapsed time: 924ms
  elapsed time: 616ms
  elapsed time: 582ms
  elapsed time: 581ms
  elapsed time: 584ms
Reflection: loop in sub-method: test(10) x 10000000
  elapsed time: 630ms
  elapsed time: 637ms
  elapsed time: 584ms
  elapsed time: 583ms
  elapsed time: 583ms
Reflection: test(1..10000000)
  elapsed time: 983ms
  elapsed time: 956ms
  elapsed time: 960ms
  elapsed time: 957ms
  elapsed time: 960ms
Reflection: loop in sub-method: test(1..10000000)
  elapsed time: 975ms
  elapsed time: 933ms
  elapsed time: 950ms
  elapsed time: 952ms
  elapsed time: 977ms
result: 9999999

hsdev-5% cp_prt6 20061023120554.jrose.dolphin-cleanups/ i486 2 product
hsdev-5% gamma -XX:LoopUnrollLimit=0 -XX:LoopOptsCount=0 Micro
Reflection: test(10) x 10000000
  elapsed time: 7461ms
  elapsed time: 7363ms
  elapsed time: 7350ms
  elapsed time: 7359ms
  elapsed time: 7351ms
Reflection: loop in sub-method: test(10) x 10000000
  elapsed time: 7340ms
  elapsed time: 7339ms
  elapsed time: 7342ms
  elapsed time: 7340ms
  elapsed time: 7326ms
Reflection: test(1..10000000)
  elapsed time: 7690ms
  elapsed time: 7691ms
  elapsed time: 7694ms
  elapsed time: 7680ms
  elapsed time: 7676ms
Reflection: loop in sub-method: test(1..10000000)
  elapsed time: 7455ms
  elapsed time: 7431ms
  elapsed time: 7420ms
  elapsed time: 7401ms
  elapsed time: 7406ms
result: 9999999