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ZJIT: --zjit-trace-fallbacks (rb_zjit_record_exit_stack) not ractor safe

Status: Open.

#1054 In Shopify/ruby;

· XrXr opened on Sep 17, 2026

ZJIT: Inline Array#first and Array#last

Status: Open.

#1052 In Shopify/ruby;

· k0kubun opened on Sep 16, 2026

ZJIT: Compute the String#<< encoding check in HIR

Status: Open.

#1051 In Shopify/ruby;

· k0kubun opened on Sep 16, 2026

ZJIT: Investigate FxHash

Status: Open.

#1049 In Shopify/ruby;

· tekknolagi opened on Sep 14, 2026

ZJIT: Add a wrapper of method call metadata and frame layout

Status: Open.

#1048 In Shopify/ruby;

· k0kubun opened on Sep 11, 2026

ZJIT: Support lazy allocation of Array in stack maps

Status: Open.

#1046 In Shopify/ruby;

· k0kubun opened on Sep 9, 2026

ZJIT: Seed ObjectAllocClass flags

Status: Open.

#1045 In Shopify/ruby;

· tekknolagi opened on Sep 9, 2026

ZJIT: Implement Global Load Store Optimization

Status: Open.

Feature

#1043 In Shopify/ruby;

· jacob-shops opened on Sep 8, 2026

ZJIT: Do less GC work for ProfiledType

Status: Open.

#1042 In Shopify/ruby;

· tekknolagi opened on Sep 8, 2026

ZJIT: Hoist load of specval out of loops that do invokeblock

Status: Open.

#1041 In Shopify/ruby;

· tekknolagi opened on Sep 4, 2026

ZJIT: lobsters perf burndown

Status: Open.

#1039 In Shopify/ruby;

· k0kubun opened on Sep 1, 2026

ZJIT: Add fast path for String#force_encoding

Status: Open.

#1038 In Shopify/ruby;

· tekknolagi opened on Aug 29, 2026