LLVM JIT (+autogen llvm instead of llvmlite) (#8486)

* LLVM JIT

* Autogen LLVM

* Update autogen

* Move things around

* even more non-determinism

* windows

* more autogen weirdness

* more windows stuff

* blind windows development try 2

* more blind windows development

* even more blind windows development

* maybe i should just set up a windows vm...

* why can't everyone just use sysv abi?

* cleanup debugging stuff

* unused import

* icache flushing isn't required on x86

* merge jit_nt and jit_unix

* more

* Temporary hack to not segfault

* better error

* bad conflict resolution

* Attempt to simplify support/llvm.py

* More refactoring

---------

Co-authored-by: George Hotz <72895+geohot@users.noreply.github.com>

autogen_stubs.sh

@@ -222,6 +222,24 @@ generate_libc() {
   fixup $BASE/libc.py
 }
 
+generate_llvm() {
+  INC="$(llvm-config-14 --includedir)"
+  clang2py -k cdefstum \
+    $(find "$INC/llvm-c/" -type f -name '*.h' | sort) \
+    "$INC/llvm/Config/Targets.def" \
+    "$INC/llvm/Config/AsmPrinters.def" \
+    "$INC/llvm/Config/AsmParsers.def" \
+    "$INC/llvm/Config/Disassemblers.def" \
+    --clang-args="$(llvm-config-14 --cflags)" \
+    -o "$BASE/llvm.py"
+
+  sed -i "s\import ctypes\import ctypes, tinygrad.runtime.support.llvm as llvm_support\g" "$BASE/llvm.py"
+  sed -i "s\FIXME_STUB\llvm\g" "$BASE/llvm.py"
+  sed -i "s\FunctionFactoryStub()\ctypes.CDLL(llvm_support.LLVM_PATH)\g" "$BASE/llvm.py"
+
+  fixup "$BASE/llvm.py"
+}
+
 generate_kgsl() {
   clang2py extra/qcom_gpu_driver/msm_kgsl.h -o $BASE/kgsl.py -k cdefstum
   fixup $BASE/kgsl.py
@@ -346,6 +364,7 @@ elif [ "$1" == "am" ]; then generate_am
 elif [ "$1" == "qcom" ]; then generate_qcom
 elif [ "$1" == "io_uring" ]; then generate_io_uring
 elif [ "$1" == "libc" ]; then generate_libc
+elif [ "$1" == "llvm" ]; then generate_llvm
 elif [ "$1" == "kgsl" ]; then generate_kgsl
 elif [ "$1" == "adreno" ]; then generate_adreno
 elif [ "$1" == "pci" ]; then generate_pciaccess