Convert CONSTANT_FUNCTION to CONSTANT

R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/19485008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15858 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add --trace-hydrogen-stubs flag (default = false).

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/20084003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15859 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
wrap gc callbacks in handlescopes

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/19845007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15860 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add the emitp function for X64 assembler

R=danno@chromium.org

Review URL: https://codereview.chromium.org/19752004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15861 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Allow handle dereference for --print-code.

R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/20040004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15862 ce2b1a6d-e550-0410-aec6-3dcde31c8c00