Load target types and handlers before IC computation.

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/170563002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19455 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
A64: Minor code generation improvement: only load the object map if needed.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/170503004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19456 ce2b1a6d-e550-0410-aec6-3dcde31c8c00