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- import type { BinaryOp, UnaryOp } from "../ast"
- import type { Loc } from "./loc"
-
- export type Operand = Loc | number
-
- export type AbsInsnCopy = {
- type: "copy",
- dest: Loc,
- source: Operand,
- }
-
- type UnaryInsn<Op> = {
- type: "unary",
- dest: Loc,
- op: Op,
- source: Operand,
- }
-
- // NOTE: We convert binary -> unary when going SSA3 -> SSA2
- export type AbsInsn2Unary = UnaryInsn<UnaryOp | BinaryOp>
-
- // Abstract instruction in two-address form
- export type AbsInsn2 = AbsInsnCopy | AbsInsn2Unary
-
- type CopyFn<A> = (dest: Loc, source: Operand) => A
- type UnaryFn<Op, A> = (dest: Loc, op: Op, source: Operand) => A
- type UnaryFn2<A> = UnaryFn<UnaryOp | BinaryOp, A>
-
- export const insnReduce2 = <A>(copy: CopyFn<A>, unary: UnaryFn2<A>, insn: AbsInsn2): A =>
- insn.type === 'copy'
- ? copy(insn.dest, insn.source)
- : unary(insn.dest, insn.op, insn.source)
-
- export type AbsInsn3Unary = UnaryInsn<UnaryOp>
-
- export type AbsInsnBinary = {
- type: "binary",
- dest: Loc,
- source: Operand,
- op: BinaryOp,
- source1: Operand
- }
-
- // Abstract instruction in three-address form
- export type AbsInsn3 = AbsInsnCopy | AbsInsn3Unary | AbsInsnBinary
-
- export const CopyInsn = (dest: Loc, source: Operand): AbsInsnCopy => ({
- type: 'copy',
- dest,
- source,
- })
-
- export const UnaryInsn = <Op>(dest: Loc, op: Op, source: Operand): UnaryInsn<Op> => ({
- type: 'unary',
- dest,
- op,
- source,
- })
-
- export const BinaryInsn = (dest: Loc, source: Operand, op: BinaryOp, source1: Operand): AbsInsnBinary => ({
- type: 'binary',
- dest,
- source,
- op,
- source1,
- })
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