Open Bug 566578 Opened 14 years ago Updated 2 years ago

Consider clearing the GC mark bitmaps using SSE2/SSE3

Categories

(Core :: JavaScript Engine, defect, P3)

Product:
Core
Component:
JavaScript Engine
Platform:
x86
macOS
Type:
defect

Tracking

()

People

(Reporter: igor, Unassigned)

References

Details

+++ This bug was initially created as a clone of Bug #565229 +++ The changes from the bug 565229 clears the GC mark bitmap of all GC arenas from the same chunk in one go using memset(bitmaps_array, 0, size). But that does not take the advantage of the fact that bitmaps_array is a multiple of 64 bytes, is rather long (about 16K) and starts on 4K boundary. This should allow to use SSE2/SSE3 instructions to clear the bitmap while checking for SSE support at runtime.
Assignee: general → nobody
Blocks: 1508327
Priority: -- → P3
Severity: normal → S3
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