[Webkit-unassigned] [Bug 162124] New: Unite op_get_by_id_with_this with op_get_by_id

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sat Sep 17 18:37:43 PDT 2016


            Bug ID: 162124
           Summary: Unite op_get_by_id_with_this with op_get_by_id
    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_get_by_id_with_this to handle super getter bindings correctly. This operand is just a call to slow path which means that getters 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_get_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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