Bug 150454 - Air needs to know which subset of an argument an operation will use or def
Summary: Air needs to know which subset of an argument an operation will use or def
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: JavaScriptCore (show other bugs)
Version: WebKit Nightly Build
Hardware: All All
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks: 150279
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Reported: 2015-10-22 11:02 PDT by Filip Pizlo
Modified: 2016-01-26 21:58 PST (History)
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Description Filip Pizlo 2015-10-22 11:02:03 PDT
That would allow us to spill it more compactly and emit tighter code in general.

It would also be cool if Def32 could be made to clearly imply that the high bits are zero'd, since that would allow us to eliminate more zero extensions from the code.
Comment 1 Filip Pizlo 2016-01-26 21:58:57 PST
We fixed this already.