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aarch64: Migrate {s,u}mulhi to ISLE

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This starts moving over some sign/zero-extend helpers also present in
lowering in Rust. Otherwise this is a relatively unsurprising transition
with the various cases of the instructions mapping well to ISLE
utilities.
This commit is contained in:
Alex Crichton
2021-11-19 11:34:00 -08:00
parent 3f16cc86cb
commit 25b380d5fc
11 changed files with 289 additions and 104 deletions
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6
cranelift/codegen/src/prelude.isle
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@@ -139,9 +139,13 @@
(extern const $F64X2 Type)
;; Get the bit width of a given type.
(decl ty_bits (Type) u16)
(decl ty_bits (Type) u8)
(extern constructor ty_bits ty_bits)
;; Get the bit width of a given type.
(decl ty_bits_u16 (Type) u16)
(extern constructor ty_bits_u16 ty_bits_u16)
;;;; Helper Clif Extractors ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; An extractor that only matches types that can fit in 32 bits.