Ruby Issue Tracking System

08/01/2025

09:56 PM Ruby Revision afac2264 (git): ZJIT: Fix side-exit panicking when there's too many locals

Previously, ARM64 panicked due to compiled_side_exits() when the memory
displacement got large enough to exceed the 9... alanwu (Alan Wu)

09:56 PM Ruby Revision 3ad6bba1 (git): ZJIT: Refer to scratch registers in operands

Co-authored-by: Takashi Kokubun <takashi.kokubun@shopify.com> alanwu (Alan Wu)

09:32 PM Ruby Revision f58fca7d (git): ZJIT: A64: Use MOVN for small negative immediates

Save a couple instructions to load a small negative constant into a
register. In fact MOVN is speced to alias as `mov... alanwu (Alan Wu)

07/31/2025

08:23 PM Ruby Revision 5a7be72c (git): Also include shape type in assert

The assert also fails on interpreter-only runs:
https://github.com/ruby/ruby/actions/runs/16658231740/job/47148610283 alanwu (Alan Wu)

07:30 PM Ruby Revision 84ee71df (git): Print shape id when a flaky shapes assert fails

This has been failing intermittently during
`test_marshal_with_ivar_and_id` for ZJIT and YJIT builds.
https://github... alanwu (Alan Wu)

05:45 PM Ruby Revision dd352461 (git): ZJIT: A64: Add add_extended() which can add a register to sp

alanwu (Alan Wu)

05:45 PM Ruby Revision 214d587a (git): ZJIT: Only build the assembler for `target_arch`

Fixes test error from running the ARM assembler on x86, but then trying
to disassemble it as x86. alanwu (Alan Wu)

05:45 PM Ruby Revision 0aabbbe3 (git): ZJIT: Remove false comment [ci skip]

alanwu (Alan Wu)

05:45 PM Ruby Revision da0de3cb (git): ZJIT: A64: Fix splitting for large memory displacements

On the ruby side, this fixes a crash for methods with 39 or more
parameters. We used to miscomp those entry points du... alanwu (Alan Wu)

07/28/2025

07:30 PM Ruby Revision ff428b4d (git): ZJIT: Keep a frame pointer and use it for memory params

Previously, ZJIT miscompiled the following because of native SP
interference.
def a(n1,n2,n3,n4,n5,n6,n7,n8) = [... alanwu (Alan Wu)