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Convert isplit / iconcat to ISLE (AArch64) (#4402)

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Converted the existing implementations for `isplit` and `iconcat` for
AArch64 to ISLE.

Copyright (c) 2022 Arm Limited
This commit is contained in:
Damian Heaton
2022-07-09 01:12:42 +01:00
committed by GitHub
parent 28eef73aeb
commit 6c70428735
3 changed files with 28 additions and 50 deletions
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14
cranelift/codegen/src/isa/aarch64/lower.isle
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@@ -107,6 +107,20 @@
(rule (lower (has_type vec_i128_ty (swizzle rn rm)))
(vec_tbl rn rm #f))
;;;; Rules for `isplit` ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(rule (lower (has_type $I64 (isplit x)))
(let
((x_regs ValueRegs x)
(x_lo ValueRegs (value_regs_get x_regs 0))
(x_hi ValueRegs (value_regs_get x_regs 1)))
(output_pair x_lo x_hi)))
;;;; Rules for `iconcat` ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(rule (lower (has_type $I128 (iconcat lo hi)))
(output (value_regs lo hi)))
;;;; Rules for `iadd_pairwise` ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(rule (lower (has_type $I16X8 (iadd_pairwise (swiden_low x) (swiden_high y))))