RFR: 8296190: TestMD5Intrinsics and TestMD5MultiBlockIntrinsics don't test the intrinsics [v2]

[Yi-Fan Tsai]

> Increase WARMUP_ITERATIONS to get MD5 hash from the intrinsic.
> 
> Both TestMD5Intrinsics and TestMD5MultiBlockIntrinsics are run with options "-XX:CompileThreshold=500 -XX:Tier4InvocationThreshold=500", so the current value is too low for the intrinsic to be executed.

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

  Set WARMUP_ITERATIONS based on Tier4InvocationThreshold

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Changes:
  - all: https://git.openjdk.org/jdk/pull/10954/files
  - new: https://git.openjdk.org/jdk/pull/10954/files/b1ff22d2..b11fe5a3

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10954&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10954&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/10954.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10954/head:pull/10954

PR: https://git.openjdk.org/jdk/pull/10954