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b6d4882c05
While accessing the ivars of other types is too complicated to realistically generate the ASM for it, we can at least provide the ivar index as to not have to lookup the shape tree every time. ``` compare-ruby: ruby 3.5.0dev (2025-08-27T14:58:58Z merge-vm-setivar-d.. 5b749d8e53) +YJIT +PRISM [arm64-darwin24] built-ruby: ruby 3.5.0dev (2025-08-28T17:58:32Z yjit-get-exivar efaa8c9b09) +YJIT +PRISM [arm64-darwin24] | |compare-ruby|built-ruby| |:--------------------------|-----------:|---------:| |vm_ivar_get_on_obj | 930.458| 936.865| | | -| 1.01x| |vm_ivar_get_on_class | 134.471| 431.622| | | -| 3.21x| |vm_ivar_get_on_generic | 146.679| 284.408| | | -| 1.94x| ``` Co-Authored-By: Aaron Patterson <tenderlove@ruby-lang.org>