[GR-73325] Template and Top of Stack optimization#13108
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graalvmbot wants to merge 1 commit intomasterfrom
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[GR-73325] Template and Top of Stack optimization#13108graalvmbot wants to merge 1 commit intomasterfrom
graalvmbot wants to merge 1 commit intomasterfrom
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This PR introduces support for template-based specialization and top-of-stack (TOS) optimization in the Graal/Truffle interpreter's "one compilation per bytecode handler" infrastructure. It enables generating multiple handler stub variants (templates), each specialized for different TOS state, by marking an expanded
@Argumentfield as the template variable. The PR also adds framework integration for managing handler tables keyed by template index, ensuring correct handler selection in interpreter threading.Key Changes:
@HostCompilerDirectives.BytecodeInterpreterHandlerConfig.Argument.Fieldannotation with atemplateVariableproperty to designate an int field as the template selector for handler specialization.templatesparameter to@HostCompilerDirectives.BytecodeInterpreterHandlerConfigto specify the number of template variants.TruffleBytecodeHandlerCallsite, handler stub generation, and stub lowering to inject a compile-time constant template variable, enabling specialization based on TOS or similar state.See detail documentation at
OneCompilationPerBytecodeHandler.md