Folding of bounded dynamic size allocations with const size allocations.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/301973014

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21675 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Rename InvertCondition and ReverseConditionForCmp on arm64 to be consistent with the other ports.

R=dcarney@chromium.org, dcarney
BUG=

Review URL: https://codereview.chromium.org/317663002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21676 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'