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1. Commits on Nov 2, 2026

   • Update to latest Mojo

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2. Commits on Nov 1, 2026

   • `SIMD` now declares upstream's `_dynamic_shuffle` with `_pshuf_or_tbl1`, `_pshuf`, and `_tbl1` (R1777), and the LLVM intrinsic table gains `llvm.x86.ssse3.pshuf.b.128` and `llvm.aarch64.neon.tbl1`,…

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   • The native backend's `String`, `repr`, and `Writer.write` of a `SIMD` value now call its declared `write_to` and `write_repr_to`, as `print` and the VM do (R1664), so vector conversions and `Bool`-…

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   • SIMD's `%`, `%=`, `divmod`, and `ceildiv` are now upstream's `__mod__`, `__rmod__`, `__imod__`, `__divmod__`, and `__ceildiv__` bodies, and SIMD declares DivModable and CeilDivable (R1623). An inte…

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3. Commits on Oct 31, 2026

   • SIMD[...] now binds its brackets through the declared struct, and Scalar, Byte, and the sized aliases are std.simd's comptime aliases in the prelude, so keyword brackets, alias imports, and a progr…

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   • SIMD now declares upstream's IntLiteral and FloatLiteral initializers over #pop.int_literal_convert and #pop<float_literal_convert>, and FloatLiteral declares __float__, write_to, and write_repr_to…

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   • A bare `IntLiteral` or `FloatLiteral` parameter is now auto-parameterized as upstream's per-call `IntLiteral[x.value]`, and an argument that cannot solve such a binder gets the pin's "depends on an…

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   • A numeric literal's type is now the application it names, `IntLiteral[4]` or `FloatLiteral[2.5]`, and a literal-only expression's type carries its folded value (R1779). `type_of` of a literal now w…

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   • The prelude now declares upstream's IntLiteral[value] and FloatLiteral[value] structs over new !pop.int_literal and !pop.float_literal attributes, so IntLiteral[(4).value]() and its members run as …

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   • SIMD's mlir_value= initializer is now upstream's declared overload, and a !kgen.simd parameter pattern binds dtype and length only from slots a binder spells, retiring the checker's storage-constru…

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   • SIMD now declares upstream's rotate_left/right, shift_left/right, reversed, and the two IndexList shuffle overloads, which previously reported "has no method". A method's overload symbol now keys w…

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   • Bundle upstream's std/utils/index.mojo (IndexList, Index, product), re-exported from std.utils, with a leading-dot parameter default now rooted at its parameter's type and a struct value's declared…

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   • SIMD's reduce_and, reduce_or, and reduce_bit_count are now upstream's declared bodies, with size_out, over llvm.vector.reduce.and/or, which now take bool lanes. This replaces the checker rule that …

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   • SIMD's reductions are now upstream's declared `reduce` tree, ported verbatim with both `reduce` overloads and `size_out`, replacing the checker, VM, and Pliron rules for `reduce_add`, `reduce_mul`,…

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   • `SIMD` declares upstream's `comptime _T = SIMD[Self.dtype, _]`, and `Self._T[n]` inside a `SIMD` method (or `SIMD[d, w]._T[n]` in a program) now resolves instead of failing. The port of upstream's …

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   • `CompilationTarget`'s string-field predicates (`is_x86`, `is_linux`, `_os`, the Neon, RISC-V, Apple, GPU, and OS queries) and the free GPU and AMD predicates are upstream's, verbatim, so they answe…

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   • `SIMD` now declares `Roundable` with upstream's two `__round__` members, and `round` is upstream's library `std.math.round`, so `round` over a vector, `round(x, ndigits)`, and `round` of any sized …

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   • `**` and `**=` now call upstream's `SIMD.__pow__`, `__rpow__`, and `__ipow__` over a verbatim `_pow`, so fractional powers print the pin's `exp(log)` digits, `Int32(3) ** 2` runs, and a negative in…

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   • `std.math` now ports upstream's `exp` verbatim (`_Expable`, both overloads, `_exp_impl`, `_exp_taylor`), so `from std.math import exp` prints the pin's digits at run time and compile time (R1743). …

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   • The checker now declares every module `def` before checking any body, so file-scope functions call one declared below them and recurse mutually, as at the pin (R393, R127). The bundled library take…

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   • `std.simd` now ports upstream's `_floor`, `_modf_scalar`, and `_modf` verbatim, so they run on both backends and at compile time with the pin's output (R1722). `std.math.modf` waits on the `std.sim…

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   • `std.math` now ports upstream's `log` and `frexp` verbatim, with `_log_accurate` for `float64` and `_log_base[27]` otherwise, so `from std.math import log` runs on both backends and at compile time…

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   • `StringLiteral`'s comparisons and `+` are now upstream's dunders, with `__add__` over `#pop.string_concat` and the `String`/`StringSpan` concatenation members upstream declares, replacing the check…

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   • A package module's `from . import name` now binds the package `__init__`'s member, re-exports included and on its import cycle, loading the submodule only when the package has no such member, as at…

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   • A loading module's top-level imports now resolve on demand when a module on its import cycle looks a name up, as upstream resolves import declarations, so a package `__init__`'s re-exports are read…

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   • `std.math` now has upstream's `ldexp` over `_ldexp_impl`, whose AVX-512 arm calls `llvm.x86.avx512.mask.scalef.ps.512`, now computed on the VM and natively and refused at compile time as at the pin…

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   • `List` now declares upstream's constructor from an iterable, so `List(xs[1:3])`, `List[Int](span)`, and `List(dict)` copy the elements as at the pin, on both backends (R1154). An initializer's `out…

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   • `std.utils.numerics` now declares upstream's `FPUtils` verbatim, `_constraint` default included, so its members run as at the pin on both backends (R1721). A compile-time argument over a local `com…

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   • `SIMD` now declares upstream's `slice`, `insert`, `split`, `interleave`, and `deinterleave`, retiring the checker's `slice` rule and the `lane_slice` mask, so all five run on both backends as at th…

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4. Commits on Oct 30, 2026

   • SIMD now declares upstream's `shuffle` overloads and `join` over `_shuffle_list` and `pop.simd.shuffle`, retiring the checker intrinsics, so two-operand shuffles and masks indexing up to twice the …

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   • `std.sys.info` declares upstream's `size_of`, `align_of`, `bit_width_of`, and `simd_width_of` with their `target` parameter, plus `is_32bit` and `is_64bit`, over KGEN's `get_sizeof` and `get_aligno…

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   • `SIMD` declares upstream's `@staticmethod` `from_bits=` initializer, so `Float32(from_bits=UInt32(1065353216))` and a `bool` mask from `uint8` lanes run on both backends as at the pin (R1593). A st…

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   • A compile-time `Span` parameter now binds a list display through `Span`'s `Array` constructor, so upstream's `std.math.polynomial` is ported and `polynomial_evaluate[[Scalar[dtype](1.0), 2.0, 3.0]]…

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   • `Span` gains upstream's `@implicit` constructor from an `Array` (R1725), so `k([4, 5])` and `k(a)` over a `Span[Int, _]` parameter, `g[Span([4, 5, 6])]()`, and `comptime n = len(Span([1, 2, 3]))` r…

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   • `std.math` becomes upstream's package with `copysign` and `std.math.constants`, and `std.utils.numerics` gains `nan`, `isnan`, `isinf`, and `isfinite` over a new `llvm.is.fpclass` intrinsic on the …

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