Both HGlobalObject and HGlobalReceiver can be replaced with HLoadNamedField.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/148453009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18891 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
ES6: Map and Set needs to normalize minus zero

BUG=v8:3069
LOG=Y
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/147143003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18892 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Kill obsolete HLoadExternalArrayPointer instruction.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/141583011

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18893 ce2b1a6d-e550-0410-aec6-3dcde31c8c00