The regex pattern to determine if code cache segmentation is turned on does not work with some versions of grep. See for example this run:

http://aurora.ru.oracle.com/functional/faces/RunDetails.xhtml?names=590676.JAVASE.NIGHTLY.VM.Comp_Baseline-Tiered.2014-09-19-101
http://scaaa008.us.oracle.com:9502/runs%2F590676.JAVASE.NIGHTLY.VM.Comp_Baseline-Tiered.2014-09-19-101/results/ResultDir/CodeCacheInfo/CodeCacheInfo.log

Code cache segmentation is turned on and the SegmentedCodeCache flag shows true but grep returns 0.

On the failing machine:
  echo ' bool SegmentedCodeCache := true ' | grep -c '\sSegmentedCodeCache\s*:\?=\s*true'
  0

On my local machine:
  echo ' bool SegmentedCodeCache := true ' | grep -c '\sSegmentedCodeCache\s*:\?=\s*true'
  1

I would suggest to use something like grep -c "SegmentedCodeCache.*=.*true".

Other runs that fail:
http://aurora.ru.oracle.com/functional/faces/RunDetails.xhtml?names=590676.JAVASE.NIGHTLY.VM.Comp_Baseline-Tiered.2014-09-19-64
http://aurora.ru.oracle.com/functional/faces/RunDetails.xhtml?names=590676.JAVASE.NIGHTLY.VM.Comp_Baseline-Tiered.2014-09-19-138