Closed Bug 619849 Opened 11 years ago Closed 11 years ago

JM: shrink JITScript on 64-bit platforms

Categories

(Core :: JavaScript Engine, defect)

defect
Not set
normal

Tracking

()

RESOLVED FIXED
Tracking Status
blocking2.0 --- betaN+

People

(Reporter: n.nethercote, Assigned: n.nethercote)

References

Details

(Whiteboard: [cib-memory], fixed-in-tracemonkey)

Attachments

(1 file)

JITScript is sub-optimally packed on 64-bit platforms.  The attached patch reduces its size from 232 to 200 bytes.  On a 20-tab cad-comics browser run, this saves 357,102 bytes.  It's a small win, but it's a dead-simple patch.
Attachment #498271 - Flags: review?(dvander)
blocking2.0: --- → ?
Whiteboard: [cib-memory]
Attachment #498271 - Flags: review?(dvander) → review+
A |bool singleStepMode| field was added since I created the patch, I squeezed that into the bottom bit of |nCallSites|.

http://hg.mozilla.org/tracemonkey/rev/35697ebafa6c
Whiteboard: [cib-memory] → [cib-memory], fixed-in-tracemonkey
blocking2.0: ? → beta9+
http://hg.mozilla.org/mozilla-central/rev/35697ebafa6c
Status: ASSIGNED → RESOLVED
Closed: 11 years ago
Resolution: --- → FIXED
As per today's meeting, beta 9 will be a time-based release. Marking these all betaN+. Please move it back to beta9+ if you believe it MUST be in the next beta (ie: trunk is in an unshippable state without this)
No longer blocks: JaegerShrink
blocking2.0: beta9+ → betaN+
Fixing fields my automated script accidentally blanked. Apologies for the bugspam
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