[LLVM] parameterize LLVM commit

.github/workflows/build_llvm.yml

@@ -18,6 +18,11 @@ on:
         description: 'Run the build with a tmate session ONLY in case of failure'
         required: false
         default: false
+      llvm_commit:
+        description: 'llvm commit to build'
+        type: string
+        required: false
+        default: ''
   pull_request:
     paths:
       - ".github/actions/setup_base"
@@ -133,12 +138,21 @@ jobs:
         run: |
 
           export LLVM_SOURCE_DIR="$PWD/third_party/llvm-project"
+
+          if [ x"${{ inputs.llvm_commit }}" != x"" ]; then
+            pushd $LLVM_SOURCE_DIR
+            git fetch --unshallow
+            git reset --hard "${{ inputs.llvm_commit }}"
+            popd
+          fi
+
           export LLVM_BUILD_DIR="$PWD/llvm-build"
           # double nested so that upload artifacts uploads a folder 
           export LLVM_INSTALL_DIR="$PWD/llvm-install/llvm-install"
 
           ccache -z
-          $python3_command -m pip install -r third_party/llvm-project/mlir/python/requirements.txt
+
+          $python3_command -m pip install PyYAML nanobind pybind11 numpy
 
           if [[ "${{ matrix.arch }}" == "wasm32-wasi" ]]; then
             scripts/build_llvm_wasi.sh

scripts/clean_gh_releases.py

@@ -1,4 +1,5 @@
 import os
+import re
 import time
 
 from github import Github
@@ -19,21 +20,30 @@
 #   -H "X-GitHub-Api-Version: 2022-11-28" \
 #   /repos/llvm/eudsl/releases
 
+skip = [
+    # last commit before typed-pointers in MLIR is removed
+    "35ca64989"
+]
+
+skip_re = re.compile("|".join(skip))
+
 n_deleted = 0
 for rel in [
     # llvm
     253845177,
     # eudsl
     253847293,
     # mlir-python-bindings
-    253847610
+    253847610,
 ]:
     for _ in range(100):
         n_deleted = 0
         repo = g.get_repo("llvm/eudsl")
         release = repo.get_release(rel)
         assets = release.get_assets()
         for ass in assets:
+            if skip_re.search(ass.name):
+                continue
             if ass.created_at.date() < thirty_days_ago:
                 print(ass.name)
                 assert ass.delete_asset()

scripts/cmake/llvm_cache.cmake

@@ -108,7 +108,7 @@ set(LLVM_MlirDevelopment_DISTRIBUTION_COMPONENTS
     mlir-libraries
     mlir-linalg-ods-yaml-gen
     mlir-opt
-    mlir-python-sources
+    # mlir-python-sources
     mlir-reduce
     mlir-tblgen
     mlir-translate