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[heap] reorder empty scope info in the root list.

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Apparently the previous clean up has regressed performance in some
cases. This is an attempt to recover these regressions.

R=ulan@chromium.org
BUG=chromium:661567

Review-Url: https://codereview.chromium.org/2471493003
Cr-Commit-Position: refs/heads/master@{#40707}
This commit is contained in:
yangguo 2016-11-02 08:19:16 -07:00 committed by Commit bot
parent 0fbf7243c6
commit e3f2910da7
1 changed files with 2 additions and 1 deletions
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3
src/heap/heap.h
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@ -65,6 +65,8 @@ using v8::MemoryPressureLevel;
/* The roots above this line should be boring from a GC point of view. */ \
/* This means they are never in new space and never on a page that is */ \
/* being compacted. */ \
/* Empty scope info */ \
V(ScopeInfo, empty_scope_info, EmptyScopeInfo) \
/* Oddballs */ \
V(Oddball, no_interceptor_result_sentinel, NoInterceptorResultSentinel) \
V(Oddball, arguments_marker, ArgumentsMarker) \
@ -140,7 +142,6 @@ using v8::MemoryPressureLevel;
V(Map, uint8x16_map, Uint8x16Map) \
V(Map, bool8x16_map, Bool8x16Map) \
/* Canonical empty values */ \
V(ScopeInfo, empty_scope_info, EmptyScopeInfo) \
V(ByteArray, empty_byte_array, EmptyByteArray) \
V(FixedTypedArrayBase, empty_fixed_uint8_array, EmptyFixedUint8Array) \
V(FixedTypedArrayBase, empty_fixed_int8_array, EmptyFixedInt8Array) \