Changes in skeleton.isle

cfe17cb1 - Cranelift: Generate integer numeric ops and conversions for ISLE in the meta crate (#11065)

Thu, 19 Jun 2025 00:24:34 +0000

Cranelift: Generate integer numeric ops and conversions for ISLE in the meta crate (#11065)* Cranelift: Generate integer numeric ops and conversions for ISLE in the meta crateThis automatically generates operations and conversions for integer types foruse in ISLE.Supported types are: `{i,u}{8,16,32,64,128}`We generate* Comparisons (eq, ne, lt, lt_eq, gt, gt_eq)* Arithmetic operations (add, sub, mul, div, neg) * These each have checked, wrapping, and unwrapping variants* Bitwise operations (and, or, xor, shifts, counting leading/trailing zeros/ones)* A variety of predicates (is_zero, is_power_of_two, is_odd, etc...) * These generate both partial constructors and a handful of extractors* Conversions * These come in a variety of flavors: fallible, infallible, truncating, unwrapping, sign-reinterpretation * Fallible conversions are also available as an extractor* Fix copy paste* Rename `x_reinterpret_as_y` to `x_cast_[un]signed`* Collapse some fallible conversions in pulley lowering* Clean up pulley iconst lowering, make sure narrowest `xconst*` instruction is always used* Avoid an unnecessary truncation in riscv64 lowering* Use extractor instead of partial constructor in x64 `imm` rule* Clean up `op mem, imm` x64 lowering rules* Use `(i64_eq a b)` instead of `(u64_eq (i64_cast_unsigned a) (i64_cast_unsigned b))`* Rename `_unwrapping_` to `_` List of files: /wasmtime-44.0.1/cranelift/codegen/src/opts/skeleton.isle

0e7fc1c7 - add rule and tests (#10978)

Mon, 09 Jun 2025 14:40:02 +0000

add rule and tests (#10978) List of files: /wasmtime-44.0.1/cranelift/codegen/src/opts/skeleton.isle

7bf31723 - Cranelift: simplify some side-effectful instructions in ISLE (#10524)

Tue, 08 Apr 2025 17:57:03 +0000

Cranelift: simplify some side-effectful instructions in ISLE (#10524)* Cranelift: simplify some side-effectful instructions in ISLEThis commit adds a new top-level ISLE entrypoint specifically for instructionsin the side-effectful skeleton: `simplify_skeleton`. While these rewrites areprocessed during the egraph pass, values from skeleton instructions still do notget inserted into the egraph. Indeed, `simplify_skeleton` operateson *instructions* rather than *values* because we do not represent side effectsas values; values do not have side effects in CLIF, instructions do. Therefore,rather than doing a whole dynamic-programming style extraction of the bestcandidate simplification like we do with the egraph, we take an eager and greedyapproach.Furthermore, `simplify_skeleton` is limited only to skeleton instructions thatdo not involve control-flow or terminators right now. This is because changingthe control-flow graph can change whether a use is dominated by a def or not,and we do not currently have the machinery to track and fix up invalidateduses. Addressing this is left for future commits.* fix `MIN / -1` cprop and add negative tests for things simplify_skeleton cannot handle yet List of files: /wasmtime-44.0.1/cranelift/codegen/src/opts/skeleton.isle