Do not rely on actual NaN value for testing extractps.

BUG=cctest/test-assembler-ia32/AssemblerIa32Extractps, cctest/test-assembler-x64/AssemblerX64Extractps
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/26704004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17218 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
AllocationSites for all literals

BUG=
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/24250005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17219 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Make TestJSArrayForAllocationMemento less awkward.

Generated code ended up having two conditional jump statements in a
row. Also introduce JumpIfJSArrayHasAllocationMemento which handles
most cases more simply.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/26841009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17220 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Simplify array element access in Hydrogen.

No change in functionality intended.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/26986004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17221 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "AllocationSites for all literals"

This reverts commit r17219 due to WebKit failures.

R=mstarzinger@chromium.org
TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/26539010

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17222 ce2b1a6d-e550-0410-aec6-3dcde31c8c00