[Webkit-unassigned] [Bug 196578] New: B3 peephole optimizations should live in their own file, and be used by FTLOutput.cpp

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Apr 3 16:44:30 PDT 2019


https://bugs.webkit.org/show_bug.cgi?id=196578

            Bug ID: 196578
           Summary: B3 peephole optimizations should live in their own
                    file, and be used by FTLOutput.cpp
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rmorisset at apple.com

Currently, the peephole optimizations are part of B3ReduceStrength.
I plan to make it possible to run them on the fly as we create new values and put them in their own file (form which they will be publicly visible) so that FTLOutput.h can call them directly.
This should help feed B3 some leaner/faster to compile code.

In the long term, this refactoring should also help create an abstract interpreter that also calls these peephole optimizations, feeding them extra information.

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