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remove iadd_cout and isub_bout (#6198)

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This commit is contained in:
T0b1-iOS
2023-04-12 01:39:32 +02:00
committed by GitHub
parent c0166f78f9
commit f684a5fbee
16 changed files with 7 additions and 390 deletions
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13
cranelift/codegen/src/isa/x64/lower.isle
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@@ -98,19 +98,6 @@
(with_flags (x64_add_with_flags_paired $I64 x_lo y_lo)
(x64_adc_paired $I64 x_hi y_hi)))))
;;;; Rules for `iadd_cout` ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; TODO: i8 and i16 support. Requires either learning how to encode ALU
;; operations on values narrower than 32-bits (better code; big change) or doing
;; the same extend-to-32-bits trick that aarch64 does (worse code; small
;; change).
(rule (lower (iadd_cout x y @ (value_type (ty_32_or_64 ty))))
(let ((results ValueRegs (with_flags (x64_add_with_flags_paired ty x y)
(x64_setcc_paired (CC.O)))))
(output_pair (value_regs_get results 0)
(value_regs_get results 1))))
;;;; Helpers for `*_overflow` ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(decl construct_overflow_op (CC ProducesFlags) InstOutput)