[Webkit-unassigned] [Bug 162125] New: Unit put_by_id_with_this and put_by_id instructions

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=162125

            Bug ID: 162125
           Summary: Unit put_by_id_with_this and put_by_id instructions
    Classification: Unclassified
           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: ticaiolima at gmail.com

The current implementation is using the instruction op_put_by_id_with_this to handle super setter bindings correctly. This operand is just a call to slow path which means that setters called from super aren't optimized to use IC or accessor inlining.

To unify these opcodes, we need to add one more operand on op_put_by_id to store the this reference and teach the following layers and ICs that base and this operands sometimes aren't the same.

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