Use corerct conversions for DataView accessors.

We now use DoubleTo(U)Int32 that follows ES specification.

R=titzer@chromium.org,rossberg@chromium.org

Review URL: https://codereview.chromium.org/18703007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15659 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Turn propagate deoptimizing mark into a proper HPhase.

Also turn the recursion on the domination chain into a loop with
an explicit stack, to avoid possible stack overflow here.

R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/19150002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15660 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix possible stack overflow in range analysis.

Avoid the implicit recursion for range analysis, using a loop with
an explicit stack instead.

BUG=chromium:259452
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/19145002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15661 ce2b1a6d-e550-0410-aec6-3dcde31c8c00