Use pages from lower to higher addresses in new space.

Use pages from lower to higher addresses in new space.

This CL constitutes the invariant that the top pointer in new space is always larger than objects allocated since the last new space garbage collection.

BUG=
R=mstarzinger@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=17185

[Michael Starzinger, 2013-10-14 09:03:51]

LGTM.

https://codereview.chromium.org/26865004/diff/1002/src/spaces.cc
File src/spaces.cc (right):

https://codereview.chromium.org/26865004/diff/1002/src/spaces.cc#newcode1532
src/spaces.cc:1532: NewSpacePage::Initialize(heap(), start_ +  i *
Page::kPageSize, this);
nit: Only one white-space after operator.

https://codereview.chromium.org/26865004/diff/1002/src/spaces.cc#newcode1611
src/spaces.cc:1611: // end of the space.
nit: Comment is outdated, let's just drop it.

[Hannes Payer (out of office), 2013-10-14 09:24:28]

https://codereview.chromium.org/26865004/diff/1002/src/spaces.cc
File src/spaces.cc (right):

https://codereview.chromium.org/26865004/diff/1002/src/spaces.cc#newcode1532
src/spaces.cc:1532: NewSpacePage::Initialize(heap(), start_ +  i *
Page::kPageSize, this);
On 2013/10/14 09:03:51, Michael Starzinger wrote:
> nit: Only one white-space after operator.

Done.

https://codereview.chromium.org/26865004/diff/1002/src/spaces.cc#newcode1611
src/spaces.cc:1611: // end of the space.
On 2013/10/14 09:03:51, Michael Starzinger wrote:
> nit: Comment is outdated, let's just drop it.

Done.

[Hannes Payer (out of office), 2013-10-14 09:48:57]

Committed patchset #3 manually as r17185 (presubmit successful).