# ruff: noqa: F405, F403
# allow define from star imports

import unittest
import functools

from tinygrad import Device, Tensor
from tinygrad.uop.ops import UOp, Ops, KernelInfo
from tinygrad.device import Compiler
from tinygrad.runtime.support.compiler_amd import HIPCompiler
from tinygrad.viz.serve import amdgpu_cfg

from extra.assembly.amd.autogen.rdna3.ins import *
from extra.assembly.amd.dsl import s

# TODO: this belongs to the dsl infrastructure
from extra.gemm.amd_asm_matmul import Kernel

# TODO: shouldn't need compiler once we can output ELF
# outputs a text disassembly for humans and a machine readable binary
def assemble(name:str, k:Kernel, compiler:Compiler) -> tuple[str, bytes]:
  src = k.to_asm()
  return (src, compiler.compile(src))

def asm_kernel(out:UOp, k:Kernel, name:str, device:str, compiler:Compiler, n_threads:int=1, n_workgroups:int=1) -> UOp:
  lidx = UOp.special(n_threads, "lidx0")
  gidx = UOp.special(n_workgroups, "gidx0")
  sink = UOp.sink(out, lidx, gidx, arg=KernelInfo(name=name))
  src, lib = assemble(name, k, compiler)
  return UOp(Ops.PROGRAM, src=(sink, UOp(Ops.DEVICE, arg=device), UOp(Ops.LINEAR, src=(*sink.src, sink)),
                               UOp(Ops.SOURCE, arg=src), UOp(Ops.BINARY, arg=lib)))

def run_asm(name:str, k:Kernel) -> None:
  fxn = functools.partial(asm_kernel, k=k, name=name, device=Device.DEFAULT, compiler=HIPCompiler(Device[Device.DEFAULT].renderer.arch))
  out = Tensor.custom_kernel(Tensor.empty(1), fxn=fxn)[0]
  out.realize()

@unittest.skipUnless(Device.DEFAULT == "AMD", "only on AMD")
class TestCfg(unittest.TestCase):
  def setUp(self):
    arch = Device["AMD"].arch
    if not any(arch.startswith(a) for a in {"gfx11", "gfx12"}):
      self.skipTest(f"tests written for RDNA, got arch {arch}")

  def test_simple(self):
    k = Kernel(arch=Device["AMD"].arch)
    k.label("entry")
    k.emit(s_branch(), target="bb1")
    k.label("bb1")
    k.emit(s_endpgm())
    k.emit(s_code_end())
    run_asm("simple", k)

  def test_diamond(self):
    k = Kernel(arch=Device["AMD"].arch)
    k.label("entry")
    k.emit(s_mov_b32(s[0], 0))
    k.emit(s_mov_b32(s[1], 0))
    k.emit(s_cmp_eq_u64(s[0:1], 0))
    k.emit(s_cbranch_scc1(), target="if")
    k.emit(s_branch(), target="else")
    k.label("if")
    k.emit(s_nop(1))
    k.emit(s_branch(), target="end")
    k.label("else")
    k.emit(s_nop(0))
    k.label("end")
    k.emit(s_endpgm())
    k.emit(s_code_end())
    run_asm("diamond", k)
    _, lib = assemble("diamond", k, HIPCompiler(Device[Device.DEFAULT].arch))
    cfg = amdgpu_cfg(lib, Device[Device.DEFAULT].device_props()["gfx_target_version"])["data"]
    self.assertEqual(len(cfg["blocks"]), 5)
    edge_count = sum(len(v) for v in cfg["paths"].values())
    self.assertEqual(edge_count, 5)
    references:dict[str, list[str]] = {}
    for pc, tokens in cfg["pc_tokens"].items():
      for t in tokens:
        for key in t["keys"]: references.setdefault(key, []).append(pc)
    self.assertEqual(len(references["r0"]), 2)
    insts = [cfg["pc_tokens"][pc][0]["st"] for pc in references["r0"]]
    self.assertEqual(insts, ['s_mov_b32', 's_cmp_eq_u64'])

  def test_loop(self):
    k = Kernel(arch=Device["AMD"].arch)
    k.label("entry")
    k.emit(s_mov_b32(s[1], 4))
    k.label("loop")
    k.emit(s_add_u32(s[1], s[1], -1))
    k.emit(s_cmp_eq_i32(s[1], 0))
    k.emit(s_cbranch_scc0(), target="loop")
    k.emit(s_endpgm())
    k.emit(s_code_end())
    run_asm("simple_loop", k)

  def test_loop_branch(self):
    k = Kernel(arch=Device["AMD"].arch)
    k.label("entry")
    k.emit(s_mov_b32(s[1], 4))
    k.label("loop")
    k.emit(s_add_u32(s[1], s[1], -1))
    k.emit(s_cmp_eq_i32(s[1], 2))
    k.emit(s_cbranch_scc1(), target="cond")
    k.emit(s_branch(), target="cont")
    k.label("cond")
    k.emit(s_add_u32(s[1], s[1], -2))
    k.label("cont")
    k.emit(s_cmp_eq_i32(s[1], 0))
    k.emit(s_cbranch_scc0(), target="loop")
    k.emit(s_endpgm())
    k.emit(s_code_end())
    run_asm("loop_if", k)

  def test_loop_break(self):
    k = Kernel(arch=Device["AMD"].arch)
    k.label("entry")
    k.emit(s_mov_b32(s[1], 8))
    k.label("loop")
    k.emit(s_add_u32(s[1], s[1], -1))
    k.emit(s_cmp_eq_i32(s[1], 5))
    k.emit(s_cbranch_scc1(), target="break")
    k.emit(s_cmp_eq_i32(s[1], 0))
    k.emit(s_cbranch_scc0(), target="loop")
    k.label("break")
    k.emit(s_endpgm())
    k.emit(s_code_end())
    run_asm("loop_break", k)

  def test_switch(self):
    k = Kernel(arch=Device["AMD"].arch)
    k.label("entry")
    k.emit(s_cmp_eq_i32(s[0], 0))
    k.emit(s_cbranch_scc1(), target="case0")
    k.emit(s_cmp_eq_i32(s[0], 1))
    k.emit(s_cbranch_scc1(), target="case1")
    k.emit(s_branch(), target="case2")
    k.label("case0")
    k.emit(s_nop(0))
    k.emit(s_branch(), target="join")
    k.label("case1")
    k.emit(s_nop(1))
    k.emit(s_branch(), target="join")
    k.label("case2")
    k.emit(s_nop(2))
    k.emit(s_branch(), target="join")
    k.label("join")
    k.emit(s_endpgm())
    k.emit(s_code_end())
    run_asm("switch_case", k)

  def test_ping_pong(self):
    k = Kernel(arch=Device["AMD"].arch)
    k.label("entry")
    k.emit(s_cmp_eq_i32(s[0], 0))
    k.emit(s_cbranch_scc1(), target="ping")
    k.emit(s_branch(), target="pong")
    k.label("ping")
    k.emit(s_cmp_eq_i32(s[1], 0))
    k.emit(s_cbranch_scc1(), target="pong")
    k.emit(s_branch(), target="end")
    k.label("pong")
    k.emit(s_cmp_eq_i32(s[2], 0))
    k.emit(s_cbranch_scc1(), target="ping")
    k.label("end")
    k.emit(s_endpgm())
    k.emit(s_code_end())
    run_asm("ping_pong", k)

  def test_colored_blocks(self):
    N = 10
    k = Kernel(arch=Device["AMD"].arch)
    k.label("entry")
    k.emit(s_branch(), target="init0")
    for i in range(N):
      loop = f"loop{i}"
      k.label(f"init{i}")
      k.emit(s_mov_b32(s[1], i + 1))
      k.emit(s_branch(), target=loop)
      k.label(loop)
      k.emit(s_nop(i & 7))
      k.emit(s_add_u32(s[1], s[1], -1))
      k.emit(s_cmp_eq_i32(s[1], 0))
      k.emit(s_cbranch_scc0(), target=loop)
      k.emit(s_branch(), target=f"init{i+1}" if i + 1 < N else "end")
    k.label("end")
    k.emit(s_endpgm())
    k.emit(s_code_end())
    run_asm("test_colored_blocks", k)

  def test_jump_back_to_end(self):
    k = Kernel(arch=Device["AMD"].arch)
    k.label("entry")
    k.emit(s_mov_b32(s[1], 2))
    k.emit(s_cbranch_execz(), target="loop")
    k.label("end")
    k.emit(s_endpgm())
    k.label("loop")
    k.emit(s_add_u32(s[1], s[1], -1))
    k.emit(s_cmp_eq_i32(s[1], 0))
    k.emit(s_branch(), target="end")
    k.emit(s_code_end())
    run_asm("jump_back_to_end", k)

  def test_hit_count(self):
    k = Kernel(arch=Device["AMD"].arch)
    k.label("entry")
    k.emit(s_mov_b32(s[1], 1))
    k.emit(s_branch(), target="alt")
    k.label("continue")
    k.emit(s_mov_b32(s[2], 2))
    k.emit(s_add_u32(s[1], s[1], s[2]))
    k.label("alt")
    k.emit(s_add_u32(s[1], s[1], -1))
    k.emit(s_endpgm())
    k.emit(s_code_end())
    run_asm("test_hit_count", k)

if __name__ == "__main__":
  unittest.main()