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Port icmp to ISLE (AArch64) (#4898)

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* Port `icmp` to ISLE (AArch64)

Ported the existing implementation of `icmp` (and, by extension, the
`lower_icmp` function) to ISLE for AArch64.

Copyright (c) 2022 Arm Limited

* Allow 'producer chains', eliminating `Nop0`s

Copyright (c) 2022 Arm Limited
This commit is contained in:
Damian Heaton
2022-09-13 16:56:50 +01:00
committed by GitHub
parent c3f8415ac7
commit e9b08b856d
11 changed files with 310 additions and 54 deletions
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3
cranelift/codegen/src/isa/aarch64/lower.isle
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@@ -1730,6 +1730,9 @@
(vec_size VectorSize (vector_size ty)))
(value_reg (int_cmp_zero_swap cond rn vec_size))))
(rule -1 (lower (has_type out_ty (icmp cond x @ (value_type in_ty) y)))
(lower_icmp_into_reg cond x y in_ty out_ty))
;;;; Rules for `trap` ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(rule (lower (trap trap_code))