Open
Bug 1102001
Opened 11 years ago
Updated 4 years ago
Improve codegen of MSubstr
Categories
(Core :: JavaScript Engine: JIT, defect, P3)
Core
JavaScript Engine: JIT
Tracking
()
NEW
People
(Reporter: h4writer, Unassigned)
References
(Blocks 1 open bug)
Details
(Keywords: perf)
Attachments
(1 file)
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18.93 KB,
patch
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Details | Diff | Splinter Review |
1) length gets overwritten and gets restored using a load. It should be possible to never overwrite the length register
2) We have a CreateDependentString function. It might be possible to share more code.
3) see if we can use useAtStart during lowering
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Reporter | |
Comment 1•11 years ago
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4) Use orConstant for length and index. (to decrease register pressure)
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Reporter | |
Comment 2•11 years ago
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Reporter | |
Updated•10 years ago
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Blocks: sm-js-perf
Priority: -- → P3
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Updated•4 years ago
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Severity: normal → S3
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Description
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