[Tarantool-patches] [PATCH luajit 0/3] Narrowing unary minus dualnum

[Sergey Kaplun via Tarantool-patches <tarantool-patches@dev.tarantool.org>]

This patch-set backports the fixes for the unary minus in the DUALNUM
build for 0 and -0. The first commit is required for simplified skip
conditions in the tests.

Branch: https://github.com/tarantool/luajit/tree/skaplun/lj-1418-1422-dualnum-narrowing-0
Related issues:
* https://github.com/LuaJIT/LuaJIT/issues/1418
* https://github.com/LuaJIT/LuaJIT/issues/1422
* https://github.com/LuaJIT/LuaJIT/issues/1442
* https://github.com/tarantool/tarantool/issues/12134

Mike Pall (3):
  Add ffi.abi("dualnum").
  DUALNUM: Fix narrowing of unary minus.
  DUALNUM: Improve/fix edge cases of unary minus.

 doc/ext_ffi_api.html                          |  2 +
 src/lib_ffi.c                                 |  3 ++
 src/lj_opt_narrow.c                           |  5 +-
 src/vm_arm.dasc                               |  5 +-
 src/vm_arm64.dasc                             |  2 +
 src/vm_mips.dasc                              |  6 ++-
 src/vm_mips64.dasc                            |  6 ++-
 src/vm_ppc.dasc                               |  7 ++-
 src/vm_x64.dasc                               |  4 ++
 src/vm_x86.dasc                               |  5 ++
 .../fix-jit-dump-ir-conv.test.lua             |  4 +-
 .../lj-1166-error-stitch-oom-ir-buff.test.lua |  3 +-
 ...lj-1418-dualnum-narrowing-minus-0.test.lua | 49 +++++++++++++++++
 .../lj-1422-incorrect-unm-for-mzero.test.lua  | 54 +++++++++++++++++++
 .../tarantool-tests/lj-1422-unm-zero.test.lua | 12 +++++
 .../lj-859-math-ceil-sign.test.lua            |  3 +-
 16 files changed, 160 insertions(+), 10 deletions(-)
 create mode 100644 test/tarantool-tests/lj-1418-dualnum-narrowing-minus-0.test.lua
 create mode 100644 test/tarantool-tests/lj-1422-incorrect-unm-for-mzero.test.lua
 create mode 100644 test/tarantool-tests/lj-1422-unm-zero.test.lua

-- 
2.53.0