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cranelift: Port trap and resumable_trap lowering to ISLE on x64

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This commit is contained in:
Nick Fitzgerald
2022-01-13 15:39:41 -08:00
parent 5bb3645bd4
commit 658c5d33c1
9 changed files with 299 additions and 185 deletions
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15
cranelift/codegen/src/prelude.isle
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@@ -57,6 +57,10 @@
(decl value_regs (Reg Reg) ValueRegs)
(extern constructor value_regs value_regs)
;; Construct an empty `ValueRegs` containing only invalid register sentinals.
(decl value_regs_invalid () ValueRegs)
(extern constructor value_regs_invalid value_regs_invalid)
;; Get a temporary register for writing.
(decl temp_writable_reg (Type) WritableReg)
(extern constructor temp_writable_reg temp_writable_reg)
@@ -270,6 +274,17 @@
(extractor (u64_from_iconst x)
(def_inst (iconst (u64_from_imm64 x))))
;;;; Helpers for Side-Effectful Instructions Without Results ;;;;;;;;;;;;;;;;;;;
(type SideEffectNoResult (enum (Inst (inst MInst))))
;; Create an empty `ValueRegs`, but do emit the given side-effectful
;; instruction.
(decl value_regs_none (SideEffectNoResult) ValueRegs)
(rule (value_regs_none (SideEffectNoResult.Inst inst))
(let ((_ Unit (emit inst)))
(value_regs_invalid)))
;;;; Helpers for Working with Flags ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Newtype wrapper around `MInst` for instructions that are used for their