Closed
Bug 1556571
Opened 5 years ago
Closed 5 years ago
Use FJCVTZS for convertDoubleToInt32
Categories
(Core :: JavaScript Engine: JIT, enhancement, P2)
Tracking
()
RESOLVED
FIXED
mozilla69
| Tracking | Status | |
|---|---|---|
| firefox69 | --- | fixed |
People
(Reporter: sstangl, Assigned: sstangl)
References
Details
Attachments
(1 file)
|
(deleted),
text/x-phabricator-request
|
Details |
With Bug 1555509 landed, we can use FJCVTZS for convertDoubleToInt32 on ARMv8.3 chipsets.
The attached patch detects hardware capabilities using Linux getauxval(AT_HWCAP) which works on both Linux and Android. Windows is left out of the loop, but the systems we're targeting there are still ARMv8.2.
Although I don't have the hardware to test this, and only tested it in a simulator, it is expected to be a massive speedup in math-heavy code, and the primary benefit of ARMv8.
|
Assignee | |
Updated•5 years ago
|
Priority: -- → P2
|
|
Assignee | |
Comment 1•5 years ago
|
||
Pushed by sstangl@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/5902299b20aa
Use FJCVTZS for convertDoubleToInt32. r=nbp
|
||
Comment 3•5 years ago
|
||
| bugherder | ||
Status: ASSIGNED → RESOLVED
Closed: 5 years ago
status-firefox69:
--- → fixed
Resolution: --- → FIXED
Target Milestone: --- → mozilla69
You need to log in
before you can comment on or make changes to this bug.
Description
•