Reviewers: Michael Starzinger,
Message:
This was an idea Toon had. It seems to saves ~3KB (every little helps...)
on
descriptor arrays for Octane and doesn't cost any performance.
PTAL.
Description:
Return descriptor ownership after TrimDescriptorArray to allow resharing of
descriptor arrays
BUG=None
Please review this at https://codereview.chromium.org/27197002/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+2, -0 lines):
M src/objects.cc
Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index
530fb6d804d5d7eb5a4bccd380eaa40b60733ff3..0c46ad603c579261bdb7e0e3caf3851a87ecdb54
100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -9246,6 +9246,8 @@ static void TrimDescriptorArray(Heap* heap,
if (descriptors->HasEnumCache()) TrimEnumCache(heap, map, descriptors);
descriptors->Sort();
+
+ map->set_owns_descriptors(true);
}
--
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