Use getauxval() if available.

This fixes the problem of not being able to detect ARM features on
ChromeOS because sandbox cannot access /proc/self/auxv and
/proc/cpuinfo there.

Drive-by-cleanup to libc detection in two other places.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/672543002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24789 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add support for a target new space size

When this flag is set, we will commit additional pages up until the
target size before doing a scavenge.

I made sure that all tests pass when a target size of 16MB is set.

BUG=v8:3626
R=ulan@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/652543007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24790 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix newly added test to not run with optimize-for-size

TBR=ulan@chromium.org
BUG=none
LOG=n

Review URL: https://codereview.chromium.org/673593002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24792 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Spread the knowledge!

R=arv@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/670623005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24793 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Enable libstdc++ debug mode in debug builds.

For now it's only enabled on Linux/Intel.

R=mstarzinger@chromium.org
BUG=v8:3638
LOG=y

Review URL: https://codereview.chromium.org/650013006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24794 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Really disable test when running with optimize for size

R=bmeurer@chromium.org
TBR=bmeurer@chromium.org
LOG=n
BUG=none

Review URL: https://codereview.chromium.org/652903008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24795 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Flatten the string in StringToDouble function.

R=yangguo@chromium.org
BUG=chromium:425551
LOG=N

Review URL: https://codereview.chromium.org/654763003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24796 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove testing artifacts from Schedule::AddFoo.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/641553003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24797 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Disable libstdc++ debug mode on x64 for now.

TBR=mstarzinger@chromium.org

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24798 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS64: Spread the knowledge!

Port r24793 (c0c2b0d)

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24799 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add FRINTP (round towards positive infinity) instruction.

Macro Assember, assembler and simulator for ARM64 were missing FRINTP.

R=rodolph.perfetta@arm.com, ulan@chromium.org

Review URL: https://codereview.chromium.org/669923002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24800 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Perf tests for fromCodePoint and codePointAt.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/670463005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24801 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
[turbofan] Add support for deferred code.

Branch can now have an optional hint, when the condition is
likely true or false, and if such a hint is present the other
basic block will be marked as deferred and placed at the end
of the function.

We currently use this feature for tagging int32/uint32 in
change lowering, and for load/store bounds checks in simplified
lowering.

TEST=cctest,unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/642883003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24802 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Switch ScheduleLateNodeVisitor to use explicit queue.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/672583002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24803 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Whitespace change to test new git workflow.

TBR=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/638883006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24804 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add an --msan flag to run-tests.py.

Currently a no-op and added only for consistency with ASan/TSan.

BUG=chromium:425187
R=machenbach@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/667903004

Patch from Sergey Matveev <earthdok@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24805 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Move js perf tests to a common root on the perf dashboard.

BUG=
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/667373004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24806 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Array.prototype.{reduce, reduceRight}: Wrong order of operations when determining initial value.

BUG=v8:3534
LOG=
R=svenpanne@chromium.org, wingo@igalia.com

Review URL: https://codereview.chromium.org/614733002

Patch from Diego Pino <dpino@igalia.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24807 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove [[PROTOTYPE]] from ObjectToStringHarmony

harmony-tostring needs to emulate InstallFunctions --- InstallFunctions will fail
in Debug builds because the `toString` property already exists in Object.prototype.

The fix is to add some of the other features from InstallFunctions() to the
setup of ObjectToStringHarmony.

R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/667263004

Patch from Caitlin Potter <caitpotter88@gmail.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24808 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'