Add SSA compiler pipeline and unified backends (#164)

* Add SSA compiler pipeline and unified backends

* refine ssa multibackend PR boundaries and pass registration

* move backend ssa pass registration into backend modules

* Add backend SSA pass contracts and registry validation

* revert test_aot_auto_tuning.py

* fix ruff

* style: satisfy contributing style checks after rebase

* Refactor SSA compiler naming (#169)

* Refactor IR dataclass constructors (#172)

* unify SSA compilation and executable multi-backend support

* Fix ruff error, refine SSA compiler structure and address review feedback

* Refactor SSA backend pipeline and restore Triton runtime autotining

* Removing TVM backend and refine Triton, CUDA, TileLang backends

* Fix zero-like GPU launches, architecture-aware caching, and JIT API

* Fix Triton AOT multi-context launches (#195)

* Add Triton AOT multi-context design

* Fix Triton AOT multi-context launches

* Cover fresh Triton AOT context guard

* Remove development process documents

* Address remaining SSA review comments (#196)

* Address remaining SSA review comments

* Sort test imports for Ruff

* Remove redundant entrypoint assertions

---------

Co-authored-by: Jiacheng Huang <45955067+voltjia@users.noreply.github.com>

Author: whjthu

src/ninetoothed/__init__.py

@@ -1,4 +1,5 @@
 from ninetoothed.build import build
+from ninetoothed.compiler.jit import jit
 from ninetoothed.dtype import (
     bfloat16,
     float16,
@@ -15,7 +16,6 @@
 )
 from ninetoothed.eval import _eval as eval
 from ninetoothed.eval import _subs as subs
-from ninetoothed.jit import jit
 from ninetoothed.make import make
 from ninetoothed.symbol import Symbol, block_size
 from ninetoothed.tensor import Tensor