You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
2.1 KiB
61 lines
2.1 KiB
import { expect } from "chai"
|
|
|
|
import { edgeConnects } from "../lib/data/graph"
|
|
import { Loc } from "../lib/ir/loc"
|
|
import type { AbsInsn2 } from "../lib/ir/insn"
|
|
import { allocateRegisters, interference, liveness } from "../lib/regalloc"
|
|
import { R8 } from "../lib/sm83/cpu"
|
|
|
|
describe("liveness", () => {
|
|
it("computes liveness", () => {
|
|
const x = [0, 1, 2].map(i => Loc.vari("x" + i))
|
|
const y = [0, 1].map(i => Loc.vari("y" + i))
|
|
|
|
const block: Array<AbsInsn2> = [
|
|
{ type: "copy", dest: x[0], source: 1 },
|
|
{ type: "unary", dest: x[1], source: x[0], op: "add" },
|
|
{ type: "unary", dest: x[2], source: x[1], op: "add" },
|
|
{ type: "unary", dest: y[0], source: x[0], op: "add" },
|
|
{ type: "unary", dest: y[1], source: y[0], op: "add" },
|
|
]
|
|
|
|
const info = liveness(block)
|
|
|
|
expect(info[0]).to.deep.equal(new Set())
|
|
expect(info[1]).to.deep.equal(new Set([x[0]]))
|
|
expect(info[2]).to.deep.equal(new Set([x[0], x[1]]))
|
|
expect(info[3]).to.deep.equal(new Set([x[0], x[1], x[2]]))
|
|
expect(info[4]).to.deep.equal(new Set([y[0], x[2]]))
|
|
})
|
|
})
|
|
|
|
describe("interference", () => {
|
|
it("computes interference", () => {
|
|
const block: Array<AbsInsn2> = [
|
|
{ type: "copy", dest: Loc.vari("a"), source: 7 },
|
|
{ type: "copy", dest: Loc.vari("b"), source: 3 },
|
|
{ type: "copy", dest: Loc.vari("x"), source: Loc.vari("a") },
|
|
]
|
|
|
|
const info = liveness(block)
|
|
const g = interference(block, info)
|
|
|
|
expect(edgeConnects(g, "a", "b")).to.be.true
|
|
})
|
|
})
|
|
|
|
describe("allocateRegisters", () => {
|
|
it("allocates registers", () => {
|
|
const block: Array<AbsInsn2> = [
|
|
{ type: "copy", dest: Loc.vari("a"), source: 7 },
|
|
{ type: "copy", dest: Loc.vari("b"), source: 3 },
|
|
{ type: "copy", dest: Loc.vari("x"), source: Loc.vari("a") }
|
|
]
|
|
|
|
const alloc = allocateRegisters(block, Object.values(R8))
|
|
|
|
expect(alloc.a).to.equal("A")
|
|
expect(alloc.b).to.equal("B")
|
|
expect(alloc.x).to.equal("A")
|
|
})
|
|
})
|