[Tarantool-patches] [PATCH luajit 0/2] Fix corner cases of for loop recording

[Sergey Kaplun]

The first patch prevents recording of useless traces with always-fail
guards for NaN control vars or -0 step values. The second patch is the
follow-up to fix DUALNUM mode.

Branch: https://github.com/tarantool/luajit/tree/skaplun/lj-1432-1433-bad-for-loops
Related issues:
* https://github.com/LuaJIT/LuaJIT/issues/1432
* https://github.com/LuaJIT/LuaJIT/issues/1433
* https://github.com/LuaJIT/LuaJIT/issues/1438
* https://github.com/tarantool/tarantool/issues/12134

Mike Pall (2):
  Prevent recording of loops with -0 step or NaN values.
  DUALNUM: Fix recording of loops broken by previous change.

 src/lj_record.c                               |  6 ++
 .../lj-1432-minus-zero-step.test.lua          | 57 +++++++++++++
 .../lj-1433-nan-for-control-var.test.lua      | 79 +++++++++++++++++++
 .../lj-1438-jit-for-canary.test.lua           | 22 ++++++
 4 files changed, 164 insertions(+)
 create mode 100644 test/tarantool-tests/lj-1432-minus-zero-step.test.lua
 create mode 100644 test/tarantool-tests/lj-1433-nan-for-control-var.test.lua
 create mode 100644 test/tarantool-tests/lj-1438-jit-for-canary.test.lua

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2.53.0