Increase precision for base conversion for large integers.

R=jkummerow@chromium.org
BUG=v8:3025
LOG=Y

Review URL: https://codereview.chromium.org/88583002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18082 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
ARM: Optimize Integer32ToSmi

Optimize register constraints and code generated for Integer32ToSmi Lithium
instruction.

TEST=none
BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/88383002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18084 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Make optimized debug builds compile with all optimizations.

This results in a speed-up of around 30% on all architectures. For local developer builds only. The bots will continue to use level 1 for now.

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/88563002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18085 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Increase test runner speed.

Let the test runner preserve the order of test suites to let suites with long running tests run first.

Mark some tests as slow that can now be skipped via --slow-tests=skip.

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/88343002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18086 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Optimize Integer32ToSmi.

Port r18084 (426bc19)

Original commit message:
Optimize register constraints and code generated for Integer32ToSmi Lithium
instruction.

TEST=none
BUG=
R=gergely@homejinni.com

Review URL: https://codereview.chromium.org/88623004

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18089 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'