From 3851c2226983a62e8fa6e3269fbe1e7fbba94691 Mon Sep 17 00:00:00 2001
From: Johnny <johnnynuca14@gmail.com>
Date: Wed, 10 Sep 2025 03:39:34 +0200
Subject: [PATCH 01/52] draft version llvm

---
 .github/workflows/llvm-ci.yml | 158 ++++++++++++++++++++++++++++++++++
 1 file changed, 158 insertions(+)
 create mode 100644 .github/workflows/llvm-ci.yml

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
new file mode 100644
index 0000000..a1ffc52
--- /dev/null
+++ b/.github/workflows/llvm-ci.yml
@@ -0,0 +1,158 @@
+name: Build LLVM (matrix)
+
+on:
+  workflow_dispatch:
+    inputs:
+      llvm_pin:
+        description: "Commit SHA (or ref) to fetch from llvm/llvm-project"
+        required: true
+        type: string
+
+  push:
+    branches: [ main ]
+  pull_request:
+
+env:
+  # Used by your script below; workflow_dispatch input takes precedence when triggered manually.
+  LLVM_PIN: ${{ inputs.llvm_pin }}
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 120
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-22.04, ubuntu-22.04-arm64, macos-14, windows-2022]
+
+    defaults:
+      run:
+        # Use bash everywhere so your script is the same on each runner
+        shell: bash
+
+    steps:
+      - name: Checkout (sparse)
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
+      # ---------- Prereqs per OS ----------
+      - name: Install prerequisites (Ubuntu)
+        if: startsWith(matrix.os, 'ubuntu-')
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends \
+            git python3 python3-pip python3-venv \
+            cmake ninja-build build-essential
+          python3 -m pip install --upgrade pip
+
+      - name: Install prerequisites (macOS)
+        if: matrix.os == 'macos-14'
+        run: |
+          brew update
+          brew install cmake ninja || true
+          # Ensure modern Python available and up-to-date pip
+          python3 -m pip install --upgrade pip
+
+      - name: Install prerequisites (Windows)
+        if: matrix.os == 'windows-2022'
+        shell: pwsh
+        run: |
+          # Rely on preinstalled toolchain; ensure pip packages for Ninja/CMake are present as fallback
+          python -m pip install --upgrade pip
+          python -m pip install ninja cmake
+          git config --global core.autocrlf false
+
+      # ---------- Prepare install prefix (/opt) ----------
+      - name: Prepare /opt install prefix
+        if: matrix.os != 'windows-2022'
+        run: |
+          sudo mkdir -p /opt/llvm-project/install
+          sudo chown -R "$USER":"$USER" /opt/llvm-project
+
+      - name: Prepare install prefix (Windows)
+        if: matrix.os == 'windows-2022'
+        run: |
+          # Use a writable path on Windows; keep your given prefix for other OSes.
+          echo "CMAKE_INSTALL_PREFIX=${GITHUB_WORKSPACE}/llvm-project/install" >> $GITHUB_ENV
+
+      # ---------- Build ----------
+      - name: Build LLVM/MLIR with Ninja
+        env:
+          # If Windows step set CMAKE_INSTALL_PREFIX above, use it; otherwise default to /opt path.
+          CMAKE_INSTALL_PREFIX: ${{ env.CMAKE_INSTALL_PREFIX || '/opt/llvm-project/install' }}
+        run: |
+          set -euo pipefail
+
+          echo "LLVM_PIN=${LLVM_PIN:-''}"
+          if [[ -z "${LLVM_PIN:-}" ]]; then
+            echo "ERROR: LLVM_PIN is not set. Provide it via workflow_dispatch input 'llvm_pin' or env."
+            exit 2
+          fi
+
+          mkdir -p llvm-project
+          cd llvm-project
+          git init
+          git remote add origin https://github.com/llvm/llvm-project.git
+          # fetch a single commit (depth 1) for the provided pin
+          git fetch --depth 1 origin "${LLVM_PIN}"
+          git checkout FETCH_HEAD
+
+          # Apply patch if present (do not fail if missing)
+          if [[ -f /tmp/triton/llvm_sm110_patch.diff ]]; then
+            echo "Applying /tmp/triton/llvm_sm110_patch.diff"
+            git apply /tmp/triton/llvm_sm110_patch.diff
+          else
+            echo "NOTE: Patch file /tmp/triton/llvm_sm110_patch.diff not found; continuing without it."
+          fi
+
+          # Python deps for MLIR
+          python3 -m pip install -r ./mlir/python/requirements.txt
+
+          mkdir -p install build
+          cd build
+
+          # Location of top-level llvm directory within monorepo
+          LLVM_SRC_DIR="../llvm"
+
+          # Generator selection (Ninja)
+          # On Windows, prefer the Python-provided Ninja if not on PATH
+          if [[ "${{ matrix.os }}" == "windows-2022" ]]; then
+            export PATH="$HOME/AppData/Roaming/Python/Python*/Scripts:$PATH"
+          fi
+
+          cmake -G Ninja \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_INSTALL_PREFIX="${CMAKE_INSTALL_PREFIX}" \
+            -DLLVM_BUILD_UTILS=ON \
+            -DLLVM_BUILD_TOOLS=ON \
+            -DLLVM_ENABLE_ASSERTIONS=ON \
+            -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
+            -DLLVM_ENABLE_PROJECTS="llvm;clang;lld;mlir" \
+            -DLLVM_INSTALL_UTILS=ON \
+            -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" \
+            -DLLVM_ENABLE_TERMINFO=OFF \
+            "${LLVM_SRC_DIR}"
+
+          # Build and run MLIR checks that don't require full runtimes,
+          # then install into the chosen prefix
+          ninja check-mlir-build-only install
+
+      - name: Archive install (artifact)
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: llvm-install-${{ matrix.os }}
+          path: |
+            /opt/llvm-project/install
+            llvm-project/install
+          if-no-files-found: warn

From 8aa171ff99f7e498a23c1d1c7af3b20d588cecbc Mon Sep 17 00:00:00 2001
From: Johnny <johnnynuca14@gmail.com>
Date: Wed, 10 Sep 2025 03:53:09 +0200
Subject: [PATCH 02/52] Update llvm-ci.yml

---
 .github/workflows/llvm-ci.yml | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index a1ffc52..1c8fb95 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -32,7 +32,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, ubuntu-22.04-arm64, macos-14, windows-2022]
+        os: [ubuntu-22.04, ubuntu-22.04-arm64, macos-15, windows-2025]
 
     defaults:
       run:
@@ -107,14 +107,6 @@ jobs:
           git fetch --depth 1 origin "${LLVM_PIN}"
           git checkout FETCH_HEAD
 
-          # Apply patch if present (do not fail if missing)
-          if [[ -f /tmp/triton/llvm_sm110_patch.diff ]]; then
-            echo "Applying /tmp/triton/llvm_sm110_patch.diff"
-            git apply /tmp/triton/llvm_sm110_patch.diff
-          else
-            echo "NOTE: Patch file /tmp/triton/llvm_sm110_patch.diff not found; continuing without it."
-          fi
-
           # Python deps for MLIR
           python3 -m pip install -r ./mlir/python/requirements.txt
 
@@ -126,7 +118,7 @@ jobs:
 
           # Generator selection (Ninja)
           # On Windows, prefer the Python-provided Ninja if not on PATH
-          if [[ "${{ matrix.os }}" == "windows-2022" ]]; then
+          if [[ "${{ matrix.os }}" == "windows-2025" ]]; then
             export PATH="$HOME/AppData/Roaming/Python/Python*/Scripts:$PATH"
           fi
 

From 67c5bffff6f0b96686c5b3ae8953eac66e215c22 Mon Sep 17 00:00:00 2001
From: Johnny <johnnynuca14@gmail.com>
Date: Fri, 12 Sep 2025 17:49:04 +0200
Subject: [PATCH 03/52] Update llvm-ci.yml

---
 .github/workflows/llvm-ci.yml | 159 ++++++++++++++++------------------
 1 file changed, 76 insertions(+), 83 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 1c8fb95..fd80c72 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -4,18 +4,13 @@ on:
   workflow_dispatch:
     inputs:
       llvm_pin:
-        description: "Commit SHA (or ref) to fetch from llvm/llvm-project"
-        required: true
-        type: string
-
+        description: "Commit SHA, tag (e.g. llvmorg-21.1.1), or ref for llvm/llvm-project"
+        required: false
+        default: llvmorg-21.1.1
   push:
     branches: [ main ]
   pull_request:
 
-env:
-  # Used by your script below; workflow_dispatch input takes precedence when triggered manually.
-  LLVM_PIN: ${{ inputs.llvm_pin }}
-
 permissions:
   contents: read
 
@@ -27,124 +22,122 @@ jobs:
   build:
     name: ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
-    timeout-minutes: 120
+    timeout-minutes: 180
 
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, ubuntu-22.04-arm64, macos-15, windows-2025]
+        os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
+
+    # Fallback order: manual input → repo/org variable → default stable tag
+    env:
+      LLVM_PIN: ${{ github.event.inputs.llvm_pin || vars.LLVM_PIN || 'llvmorg-21.1.1' }}
 
     defaults:
       run:
-        # Use bash everywhere so your script is the same on each runner
         shell: bash
 
     steps:
-      - name: Checkout (sparse)
+      - name: Checkout
         uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
         with:
-          fetch-depth: 1
+          python-version: '3.11'
 
-      # ---------- Prereqs per OS ----------
-      - name: Install prerequisites (Ubuntu)
-        if: startsWith(matrix.os, 'ubuntu-')
+      # ---------- Prereqs ----------
+      - name: Install prerequisites (Linux)
+        if: runner.os == 'Linux'
         run: |
           sudo apt-get update
-          sudo apt-get install -y --no-install-recommends \
-            git python3 python3-pip python3-venv \
-            cmake ninja-build build-essential
-          python3 -m pip install --upgrade pip
-
+          sudo apt-get install -y --no-install-recommends git cmake ninja-build build-essential
+          python -m pip install --upgrade pip
       - name: Install prerequisites (macOS)
-        if: matrix.os == 'macos-14'
+        if: runner.os == 'macOS'
         run: |
           brew update
           brew install cmake ninja || true
-          # Ensure modern Python available and up-to-date pip
           python3 -m pip install --upgrade pip
-
       - name: Install prerequisites (Windows)
-        if: matrix.os == 'windows-2022'
+        if: runner.os == 'Windows'
         shell: pwsh
         run: |
-          # Rely on preinstalled toolchain; ensure pip packages for Ninja/CMake are present as fallback
           python -m pip install --upgrade pip
           python -m pip install ninja cmake
           git config --global core.autocrlf false
-
-      # ---------- Prepare install prefix (/opt) ----------
-      - name: Prepare /opt install prefix
-        if: matrix.os != 'windows-2022'
-        run: |
-          sudo mkdir -p /opt/llvm-project/install
-          sudo chown -R "$USER":"$USER" /opt/llvm-project
-
-      - name: Prepare install prefix (Windows)
-        if: matrix.os == 'windows-2022'
+      # ---------- Compute install prefix ----------
+      - name: Compute install prefix
+        id: prefix
         run: |
-          # Use a writable path on Windows; keep your given prefix for other OSes.
-          echo "CMAKE_INSTALL_PREFIX=${GITHUB_WORKSPACE}/llvm-project/install" >> $GITHUB_ENV
-
-      # ---------- Build ----------
-      - name: Build LLVM/MLIR with Ninja
+          set -euo pipefail
+          if [ "${RUNNER_OS}" = "Windows" ]; then
+            echo "prefix=${RUNNER_TEMP}\\llvm-install" >> "$GITHUB_OUTPUT"
+          else
+            echo "prefix=${RUNNER_TEMP}/llvm-install" >> "$GITHUB_OUTPUT"
+          fi
+      # ---------- Build *nix ----------
+      - name: Build (Linux & macOS)
+        if: runner.os != 'Windows'
         env:
-          # If Windows step set CMAKE_INSTALL_PREFIX above, use it; otherwise default to /opt path.
-          CMAKE_INSTALL_PREFIX: ${{ env.CMAKE_INSTALL_PREFIX || '/opt/llvm-project/install' }}
+          CMAKE_INSTALL_PREFIX: ${{ steps.prefix.outputs.prefix }}
         run: |
           set -euo pipefail
-
-          echo "LLVM_PIN=${LLVM_PIN:-''}"
-          if [[ -z "${LLVM_PIN:-}" ]]; then
-            echo "ERROR: LLVM_PIN is not set. Provide it via workflow_dispatch input 'llvm_pin' or env."
-            exit 2
-          fi
-
+          echo "Using LLVM_PIN=${LLVM_PIN}"
           mkdir -p llvm-project
           cd llvm-project
           git init
           git remote add origin https://github.com/llvm/llvm-project.git
-          # fetch a single commit (depth 1) for the provided pin
           git fetch --depth 1 origin "${LLVM_PIN}"
-          git checkout FETCH_HEAD
-
-          # Python deps for MLIR
-          python3 -m pip install -r ./mlir/python/requirements.txt
-
-          mkdir -p install build
-          cd build
-
-          # Location of top-level llvm directory within monorepo
-          LLVM_SRC_DIR="../llvm"
-
-          # Generator selection (Ninja)
-          # On Windows, prefer the Python-provided Ninja if not on PATH
-          if [[ "${{ matrix.os }}" == "windows-2025" ]]; then
-            export PATH="$HOME/AppData/Roaming/Python/Python*/Scripts:$PATH"
-          fi
-
-          cmake -G Ninja \
+          git checkout --detach FETCH_HEAD
+          python3 -m pip install -r mlir/python/requirements.txt
+          cmake -S llvm -B build -G Ninja \
             -DCMAKE_BUILD_TYPE=Release \
             -DCMAKE_INSTALL_PREFIX="${CMAKE_INSTALL_PREFIX}" \
-            -DLLVM_BUILD_UTILS=ON \
-            -DLLVM_BUILD_TOOLS=ON \
             -DLLVM_ENABLE_ASSERTIONS=ON \
-            -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
-            -DLLVM_ENABLE_PROJECTS="llvm;clang;lld;mlir" \
+            -DLLVM_BUILD_UTILS=ON -DLLVM_BUILD_TOOLS=ON \
             -DLLVM_INSTALL_UTILS=ON \
+            -DLLVM_ENABLE_PROJECTS="clang;lld;mlir" \
+            -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" \
-            -DLLVM_ENABLE_TERMINFO=OFF \
-            "${LLVM_SRC_DIR}"
-
-          # Build and run MLIR checks that don't require full runtimes,
-          # then install into the chosen prefix
-          ninja check-mlir-build-only install
-
+            -DLLVM_ENABLE_TERMINFO=OFF
+          cmake --build build --target all -- -k 0
+          cmake --build build --target check-mlir
+          cmake --build build --target install
+      # ---------- Build Windows ----------
+      - name: Build (Windows)
+        if: runner.os == 'Windows'
+        shell: pwsh
+        env:
+          CMAKE_INSTALL_PREFIX: ${{ steps.prefix.outputs.prefix }}
+        run: |
+          $ErrorActionPreference = 'Stop'
+          Write-Host "Using LLVM_PIN=$env:LLVM_PIN"
+          New-Item -ItemType Directory -Force -Path llvm-project | Out-Null
+          Set-Location llvm-project
+          git init
+          git remote add origin https://github.com/llvm/llvm-project.git
+          git fetch --depth 1 origin "$env:LLVM_PIN"
+          git checkout --detach FETCH_HEAD
+          python -m pip install -r mlir/python/requirements.txt
+          cmake -S llvm -B build -G "Ninja" `
+            -DCMAKE_BUILD_TYPE=Release `
+            -DCMAKE_INSTALL_PREFIX="$env:CMAKE_INSTALL_PREFIX" `
+            -DLLVM_ENABLE_ASSERTIONS=ON `
+            -DLLVM_BUILD_UTILS=ON -DLLVM_BUILD_TOOLS=ON `
+            -DLLVM_INSTALL_UTILS=ON `
+            -DLLVM_ENABLE_PROJECTS="clang;lld;mlir" `
+            -DMLIR_ENABLE_BINDINGS_PYTHON=ON `
+            -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" `
+            -DLLVM_ENABLE_TERMINFO=OFF
+          cmake --build build --target all
+          cmake --build build --target check-mlir
+          cmake --build build --target install
+      # ---------- Artifact ----------
       - name: Archive install (artifact)
         if: always()
         uses: actions/upload-artifact@v4
         with:
           name: llvm-install-${{ matrix.os }}
-          path: |
-            /opt/llvm-project/install
-            llvm-project/install
+          path: ${{ steps.prefix.outputs.prefix }}
           if-no-files-found: warn

From d5ce1f4812258bf2a1ba61112e35498afdad0932 Mon Sep 17 00:00:00 2001
From: Johnny <johnnynuca14@gmail.com>
Date: Fri, 12 Sep 2025 18:19:05 +0200
Subject: [PATCH 04/52] Update llvm-ci.yml

---
 .github/workflows/llvm-ci.yml | 121 +++++++++++++++++++++++++++++++---
 1 file changed, 112 insertions(+), 9 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index fd80c72..c2c8c94 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -23,14 +23,13 @@ jobs:
     name: ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     timeout-minutes: 180
-
     strategy:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
 
-    # Fallback order: manual input → repo/org variable → default stable tag
     env:
+      # manual input → repo/org var → default
       LLVM_PIN: ${{ github.event.inputs.llvm_pin || vars.LLVM_PIN || 'llvmorg-21.1.1' }}
 
     defaults:
@@ -46,19 +45,25 @@ jobs:
         with:
           python-version: '3.11'
 
+      # --- calm the git default-branch hint ---
+      - name: Silence git default-branch hint
+        run: git config --global init.defaultBranch main
+
       # ---------- Prereqs ----------
       - name: Install prerequisites (Linux)
         if: runner.os == 'Linux'
         run: |
           sudo apt-get update
-          sudo apt-get install -y --no-install-recommends git cmake ninja-build build-essential
+          sudo apt-get install -y --no-install-recommends git cmake ninja-build build-essential zip
           python -m pip install --upgrade pip
+
       - name: Install prerequisites (macOS)
         if: runner.os == 'macOS'
         run: |
           brew update
           brew install cmake ninja || true
           python3 -m pip install --upgrade pip
+
       - name: Install prerequisites (Windows)
         if: runner.os == 'Windows'
         shell: pwsh
@@ -66,6 +71,7 @@ jobs:
           python -m pip install --upgrade pip
           python -m pip install ninja cmake
           git config --global core.autocrlf false
+
       # ---------- Compute install prefix ----------
       - name: Compute install prefix
         id: prefix
@@ -76,6 +82,7 @@ jobs:
           else
             echo "prefix=${RUNNER_TEMP}/llvm-install" >> "$GITHUB_OUTPUT"
           fi
+
       # ---------- Build *nix ----------
       - name: Build (Linux & macOS)
         if: runner.os != 'Windows'
@@ -84,13 +91,16 @@ jobs:
         run: |
           set -euo pipefail
           echo "Using LLVM_PIN=${LLVM_PIN}"
+
           mkdir -p llvm-project
           cd llvm-project
           git init
           git remote add origin https://github.com/llvm/llvm-project.git
           git fetch --depth 1 origin "${LLVM_PIN}"
           git checkout --detach FETCH_HEAD
+
           python3 -m pip install -r mlir/python/requirements.txt
+
           cmake -S llvm -B build -G Ninja \
             -DCMAKE_BUILD_TYPE=Release \
             -DCMAKE_INSTALL_PREFIX="${CMAKE_INSTALL_PREFIX}" \
@@ -101,9 +111,11 @@ jobs:
             -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" \
             -DLLVM_ENABLE_TERMINFO=OFF
+
           cmake --build build --target all -- -k 0
           cmake --build build --target check-mlir
           cmake --build build --target install
+
       # ---------- Build Windows ----------
       - name: Build (Windows)
         if: runner.os == 'Windows'
@@ -113,13 +125,16 @@ jobs:
         run: |
           $ErrorActionPreference = 'Stop'
           Write-Host "Using LLVM_PIN=$env:LLVM_PIN"
+
           New-Item -ItemType Directory -Force -Path llvm-project | Out-Null
           Set-Location llvm-project
           git init
           git remote add origin https://github.com/llvm/llvm-project.git
           git fetch --depth 1 origin "$env:LLVM_PIN"
           git checkout --detach FETCH_HEAD
+
           python -m pip install -r mlir/python/requirements.txt
+
           cmake -S llvm -B build -G "Ninja" `
             -DCMAKE_BUILD_TYPE=Release `
             -DCMAKE_INSTALL_PREFIX="$env:CMAKE_INSTALL_PREFIX" `
@@ -130,14 +145,102 @@ jobs:
             -DMLIR_ENABLE_BINDINGS_PYTHON=ON `
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" `
             -DLLVM_ENABLE_TERMINFO=OFF
+
           cmake --build build --target all
           cmake --build build --target check-mlir
           cmake --build build --target install
-      # ---------- Artifact ----------
-      - name: Archive install (artifact)
-        if: always()
+
+      # ----------  compute package naming ----------
+      - name: Compute package name
+        id: pkgmeta
+        shell: bash
+        run: |
+          set -euo pipefail
+          os="${RUNNER_OS}"
+          arch="$(uname -m || true)"
+          case "$os" in
+            Linux)
+              if [ "$arch" = "aarch64" ] || [ "$arch" = "arm64" ]; then suffix="linux-aarch64"; else suffix="linux-x86_64"; fi
+              ;;
+            macOS)  suffix="macos-arm64" ;; # macos-15 runners are Apple Silicon
+            Windows) suffix="windows-amd64" ;;
+          esac
+          echo "suffix=$suffix" >> "$GITHUB_OUTPUT"
+          echo "zip=taichi-llvm-21-$suffix.zip" >> "$GITHUB_OUTPUT"
+
+      # ----------  package (Linux/macOS) ----------
+      - name: Package (Linux/macOS)
+        if: runner.os != 'Windows'
+        env:
+          CMAKE_INSTALL_PREFIX: ${{ steps.prefix.outputs.prefix }}
+        run: |
+          set -euo pipefail
+          pkgroot="${RUNNER_TEMP}/taichi-llvm-21-${{ steps.pkgmeta.outputs.suffix }}"
+          mkdir -p "$pkgroot"
+          # copy install tree
+          cp -R "${CMAKE_INSTALL_PREFIX}/." "$pkgroot/"
+          # bundle license
+          cp llvm-project/LICENSE.TXT "$pkgroot/LLVM-LICENSE.txt" || true
+          # optional strip to shrink size
+          if [ -x "${CMAKE_INSTALL_PREFIX}/bin/llvm-strip" ]; then
+            find "$pkgroot/bin" -type f -exec "${CMAKE_INSTALL_PREFIX}/bin/llvm-strip" --strip-unneeded {} + || true
+            find "$pkgroot/lib" -type f \( -name "*.so*" -o -name "*.dylib" -o -name "*.a" \) \
+              -exec "${CMAKE_INSTALL_PREFIX}/bin/llvm-strip" --strip-unneeded {} + || true
+          fi
+          ( cd "${RUNNER_TEMP}" && zip -r "${GITHUB_WORKSPACE}/${{ steps.pkgmeta.outputs.zip }}" \
+              "taichi-llvm-21-${{ steps.pkgmeta.outputs.suffix }}" )
+          # sha256
+          ( cd "${GITHUB_WORKSPACE}" && shasum -a 256 "${{ steps.pkgmeta.outputs.zip }}" > "${{ steps.pkgmeta.outputs.zip }}.sha256" || sha256sum "${{ steps.pkgmeta.outputs.zip }}" > "${{ steps.pkgmeta.outputs.zip }}.sha256" )
+
+      # ----------  package (Windows) ----------
+      - name: Package (Windows)
+        if: runner.os == 'Windows'
+        shell: pwsh
+        env:
+          CMAKE_INSTALL_PREFIX: ${{ steps.prefix.outputs.prefix }}
+        run: |
+          $zip = "${{ steps.pkgmeta.outputs.zip }}"
+          # Zip contents at root (strip=0 expectation)
+          Compress-Archive -Path "$env:CMAKE_INSTALL_PREFIX\*" -DestinationPath "$pwd\$zip" -Force
+          # SHA256
+          CertUtil -hashfile "$pwd\$zip" SHA256 | Out-File -FilePath "$pwd\$zip.sha256" -Encoding ascii
+
+      # ---------- Upload artifacts (for aggregator) ----------
+      - name: Upload packaged asset
         uses: actions/upload-artifact@v4
         with:
-          name: llvm-install-${{ matrix.os }}
-          path: ${{ steps.prefix.outputs.prefix }}
-          if-no-files-found: warn
+          name: ${{ steps.pkgmeta.outputs.zip }}
+          path: |
+            ${{ github.workspace }}/${{ steps.pkgmeta.outputs.zip }}
+            ${{ github.workspace }}/${{ steps.pkgmeta.outputs.zip }}.sha256
+          if-no-files-found: error
+
+  # ----------  publish a GitHub Release with all zips ----------
+  release:
+    name: Publish release ${{ needs.build.outputs.LLVM_PIN }}
+    runs-on: ubuntu-22.04
+    needs: build
+    permissions:
+      contents: write
+    env:
+      LLVM_PIN: ${{ github.event.inputs.llvm_pin || vars.LLVM_PIN || 'llvmorg-21.1.1' }}
+    steps:
+      - name: Download all assets
+        uses: actions/download-artifact@v4
+        with:
+          path: dist
+
+      - name: List assets
+        run: ls -R dist
+
+      - name: Create/Update release (tag = LLVM_PIN)
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ env.LLVM_PIN }}
+          name: LLVM assets for ${{ env.LLVM_PIN }}
+          body: |
+            Prebuilt LLVM/Clang/LLD/MLIR install trees for Taichi consumption.
+            Tag: ${{ env.LLVM_PIN }}
+          files: |
+            dist/**/taichi-llvm-21-*.zip
+            dist/**/taichi-llvm-21-*.zip.sha256

From fe6253525cb315cf4baa360932399dd97b0b1968 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 14 Sep 2025 18:16:33 -0400
Subject: [PATCH 05/52] try running everything, without mlir, on 15.0.7

---
 .github/workflows/llvm-ci.yml                 | 85 +++++++++----------
 .../{ubuntu-arm.yml => vulkan-arm.yml}        | 16 ++--
 2 files changed, 50 insertions(+), 51 deletions(-)
 rename .github/workflows/{ubuntu-arm.yml => vulkan-arm.yml} (94%)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index c2c8c94..651ce4e 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -3,13 +3,13 @@ name: Build LLVM (matrix)
 on:
   workflow_dispatch:
     inputs:
-      llvm_pin:
+      llvm_tag:
         description: "Commit SHA, tag (e.g. llvmorg-21.1.1), or ref for llvm/llvm-project"
         required: false
-        default: llvmorg-21.1.1
-  push:
-    branches: [ main ]
+        default: llvmorg-15.0.7
   pull_request:
+    paths:
+     - '.github/workflows/llvm-ci.yml'
 
 permissions:
   contents: read
@@ -30,7 +30,7 @@ jobs:
 
     env:
       # manual input → repo/org var → default
-      LLVM_PIN: ${{ github.event.inputs.llvm_pin || vars.LLVM_PIN || 'llvmorg-21.1.1' }}
+      LLVM_TAG: ${{ github.event.inputs.llvm_tag || vars.LLVM_TAG || 'llvmorg-15.0.7' }}
 
     defaults:
       run:
@@ -43,7 +43,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.11'
+          python-version: '3.10'
 
       # --- calm the git default-branch hint ---
       - name: Silence git default-branch hint
@@ -90,13 +90,13 @@ jobs:
           CMAKE_INSTALL_PREFIX: ${{ steps.prefix.outputs.prefix }}
         run: |
           set -euo pipefail
-          echo "Using LLVM_PIN=${LLVM_PIN}"
+          echo "Using LLVM_TAG=${LLVM_TAG}"
 
           mkdir -p llvm-project
           cd llvm-project
           git init
           git remote add origin https://github.com/llvm/llvm-project.git
-          git fetch --depth 1 origin "${LLVM_PIN}"
+          git fetch --depth 1 origin "${LLVM_TAG}"
           git checkout --detach FETCH_HEAD
 
           python3 -m pip install -r mlir/python/requirements.txt
@@ -124,13 +124,13 @@ jobs:
           CMAKE_INSTALL_PREFIX: ${{ steps.prefix.outputs.prefix }}
         run: |
           $ErrorActionPreference = 'Stop'
-          Write-Host "Using LLVM_PIN=$env:LLVM_PIN"
+          Write-Host "Using LLVM_TAG=$env:LLVM_TAG"
 
           New-Item -ItemType Directory -Force -Path llvm-project | Out-Null
           Set-Location llvm-project
           git init
           git remote add origin https://github.com/llvm/llvm-project.git
-          git fetch --depth 1 origin "$env:LLVM_PIN"
+          git fetch --depth 1 origin "$env:LLVM_TAG"
           git checkout --detach FETCH_HEAD
 
           python -m pip install -r mlir/python/requirements.txt
@@ -139,15 +139,13 @@ jobs:
             -DCMAKE_BUILD_TYPE=Release `
             -DCMAKE_INSTALL_PREFIX="$env:CMAKE_INSTALL_PREFIX" `
             -DLLVM_ENABLE_ASSERTIONS=ON `
-            -DLLVM_BUILD_UTILS=ON -DLLVM_BUILD_TOOLS=ON `
-            -DLLVM_INSTALL_UTILS=ON `
-            -DLLVM_ENABLE_PROJECTS="clang;lld;mlir" `
+            -DLLVM_ENABLE_PROJECTS="clang" `
+            -DLLVM_ENABLE_RTTI:BOOL=ON `
             -DMLIR_ENABLE_BINDINGS_PYTHON=ON `
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" `
             -DLLVM_ENABLE_TERMINFO=OFF
 
           cmake --build build --target all
-          cmake --build build --target check-mlir
           cmake --build build --target install
 
       # ----------  compute package naming ----------
@@ -215,32 +213,33 @@ jobs:
             ${{ github.workspace }}/${{ steps.pkgmeta.outputs.zip }}.sha256
           if-no-files-found: error
 
-  # ----------  publish a GitHub Release with all zips ----------
-  release:
-    name: Publish release ${{ needs.build.outputs.LLVM_PIN }}
-    runs-on: ubuntu-22.04
-    needs: build
-    permissions:
-      contents: write
-    env:
-      LLVM_PIN: ${{ github.event.inputs.llvm_pin || vars.LLVM_PIN || 'llvmorg-21.1.1' }}
-    steps:
-      - name: Download all assets
-        uses: actions/download-artifact@v4
-        with:
-          path: dist
-
-      - name: List assets
-        run: ls -R dist
-
-      - name: Create/Update release (tag = LLVM_PIN)
-        uses: softprops/action-gh-release@v2
-        with:
-          tag_name: ${{ env.LLVM_PIN }}
-          name: LLVM assets for ${{ env.LLVM_PIN }}
-          body: |
-            Prebuilt LLVM/Clang/LLD/MLIR install trees for Taichi consumption.
-            Tag: ${{ env.LLVM_PIN }}
-          files: |
-            dist/**/taichi-llvm-21-*.zip
-            dist/**/taichi-llvm-21-*.zip.sha256
+  # might put this back later, but with more specific name, that is ok-ish on a PR
+  # # ----------  publish a GitHub Release with all zips ----------
+  # release:
+  #   name: Publish release ${{ needs.build.outputs.LLVM_TAG }}
+  #   runs-on: ubuntu-22.04
+  #   needs: build
+  #   permissions:
+  #     contents: write
+  #   env:
+  #     LLVM_TAG: ${{ github.event.inputs.llvm_tag || vars.LLVM_TAG || 'llvmorg-21.1.1' }}
+  #   steps:
+  #     - name: Download all assets
+  #       uses: actions/download-artifact@v4
+  #       with:
+  #         path: dist
+
+  #     - name: List assets
+  #       run: ls -R dist
+
+  #     - name: Create/Update release (tag = LLVM_TAG)
+  #       uses: softprops/action-gh-release@v2
+  #       with:
+  #         tag_name: ${{ env.LLVM_TAG }}
+  #         name: LLVM assets for ${{ env.LLVM_TAG }}
+  #         body: |
+  #           Prebuilt LLVM/Clang/LLD/MLIR install trees for Taichi consumption.
+  #           Tag: ${{ env.LLVM_TAG }}
+  #         files: |
+  #           dist/**/taichi-llvm-21-*.zip
+  #           dist/**/taichi-llvm-21-*.zip.sha256
diff --git a/.github/workflows/ubuntu-arm.yml b/.github/workflows/vulkan-arm.yml
similarity index 94%
rename from .github/workflows/ubuntu-arm.yml
rename to .github/workflows/vulkan-arm.yml
index 11f3f2d..4df4087 100644
--- a/.github/workflows/ubuntu-arm.yml
+++ b/.github/workflows/vulkan-arm.yml
@@ -1,18 +1,18 @@
 name: Build-Vulkan-SDK-ARM
 
 on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
+  # disable for now
+  # pull_request:
+  #   branches:
+  #     - main
+  #  paths:
+  #   - '.github/workflows/vulkan-arm.yml'
   workflow_dispatch:
     inputs:
       version:
-        description: 'Vulkan SDK version (e.g., 1.4.304.1)'
+        description: 'Vulkan SDK version (e.g., 1.4.321.1)'
         required: false
-        default: '1.4.304.1'
+        default: '1.4.321.1'
 
 jobs:
   build-linux-arm:

From 42bf326f4a05e47eaa2f90b4e0f966b5f3a55e98 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 14 Sep 2025 18:31:10 -0400
Subject: [PATCH 06/52] removing more mlir

---
 .github/workflows/llvm-ci.yml | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 651ce4e..349b736 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -99,21 +99,16 @@ jobs:
           git fetch --depth 1 origin "${LLVM_TAG}"
           git checkout --detach FETCH_HEAD
 
-          python3 -m pip install -r mlir/python/requirements.txt
-
           cmake -S llvm -B build -G Ninja \
             -DCMAKE_BUILD_TYPE=Release \
             -DCMAKE_INSTALL_PREFIX="${CMAKE_INSTALL_PREFIX}" \
             -DLLVM_ENABLE_ASSERTIONS=ON \
-            -DLLVM_BUILD_UTILS=ON -DLLVM_BUILD_TOOLS=ON \
-            -DLLVM_INSTALL_UTILS=ON \
-            -DLLVM_ENABLE_PROJECTS="clang;lld;mlir" \
-            -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
+            -DLLVM_ENABLE_PROJECTS="clang" \
+            -DLLVM_ENABLE_RTTI:BOOL=ON `
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" \
             -DLLVM_ENABLE_TERMINFO=OFF
 
           cmake --build build --target all -- -k 0
-          cmake --build build --target check-mlir
           cmake --build build --target install
 
       # ---------- Build Windows ----------
@@ -133,15 +128,12 @@ jobs:
           git fetch --depth 1 origin "$env:LLVM_TAG"
           git checkout --detach FETCH_HEAD
 
-          python -m pip install -r mlir/python/requirements.txt
-
           cmake -S llvm -B build -G "Ninja" `
             -DCMAKE_BUILD_TYPE=Release `
             -DCMAKE_INSTALL_PREFIX="$env:CMAKE_INSTALL_PREFIX" `
             -DLLVM_ENABLE_ASSERTIONS=ON `
             -DLLVM_ENABLE_PROJECTS="clang" `
             -DLLVM_ENABLE_RTTI:BOOL=ON `
-            -DMLIR_ENABLE_BINDINGS_PYTHON=ON `
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" `
             -DLLVM_ENABLE_TERMINFO=OFF
 

From 49ef9e51a5a72345bc27897eadf8280b7a1b2f87 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 14 Sep 2025 18:34:19 -0400
Subject: [PATCH 07/52] syntax erro in yml

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 349b736..16601a6 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -104,7 +104,7 @@ jobs:
             -DCMAKE_INSTALL_PREFIX="${CMAKE_INSTALL_PREFIX}" \
             -DLLVM_ENABLE_ASSERTIONS=ON \
             -DLLVM_ENABLE_PROJECTS="clang" \
-            -DLLVM_ENABLE_RTTI:BOOL=ON `
+            -DLLVM_ENABLE_RTTI:BOOL=ON \
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" \
             -DLLVM_ENABLE_TERMINFO=OFF
 

From 4a37cd7bb9f4a667a707a03bc5b11fb1d13ec8f6 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 14 Sep 2025 18:53:52 -0400
Subject: [PATCH 08/52] llvm_version; dont hardcode 21

---
 .github/workflows/llvm-ci.yml | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 16601a6..75bd73a 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -3,10 +3,10 @@ name: Build LLVM (matrix)
 on:
   workflow_dispatch:
     inputs:
-      llvm_tag:
-        description: "Commit SHA, tag (e.g. llvmorg-21.1.1), or ref for llvm/llvm-project"
+      llvm_version:
+        description: "e.g. 15.0.7, 21.1.1, etc"
         required: false
-        default: llvmorg-15.0.7
+        default: 15.0.7
   pull_request:
     paths:
      - '.github/workflows/llvm-ci.yml'
@@ -30,7 +30,7 @@ jobs:
 
     env:
       # manual input → repo/org var → default
-      LLVM_TAG: ${{ github.event.inputs.llvm_tag || vars.LLVM_TAG || 'llvmorg-15.0.7' }}
+      LLVM_TAG: llvmorg-${{ github.event.inputs.llvm_version || vars.LLVM_TAG || '15.0.7' }}
 
     defaults:
       run:
@@ -156,7 +156,7 @@ jobs:
             Windows) suffix="windows-amd64" ;;
           esac
           echo "suffix=$suffix" >> "$GITHUB_OUTPUT"
-          echo "zip=taichi-llvm-21-$suffix.zip" >> "$GITHUB_OUTPUT"
+          echo "zip=taichi-llvm-${{ github.event.inputs.llvm_version }}-$suffix.zip" >> "$GITHUB_OUTPUT"
 
       # ----------  package (Linux/macOS) ----------
       - name: Package (Linux/macOS)
@@ -165,7 +165,7 @@ jobs:
           CMAKE_INSTALL_PREFIX: ${{ steps.prefix.outputs.prefix }}
         run: |
           set -euo pipefail
-          pkgroot="${RUNNER_TEMP}/taichi-llvm-21-${{ steps.pkgmeta.outputs.suffix }}"
+          pkgroot="${RUNNER_TEMP}/taichi-llvm-${{ github.event.inputs.llvm_version }}-${{ steps.pkgmeta.outputs.suffix }}"
           mkdir -p "$pkgroot"
           # copy install tree
           cp -R "${CMAKE_INSTALL_PREFIX}/." "$pkgroot/"
@@ -178,7 +178,7 @@ jobs:
               -exec "${CMAKE_INSTALL_PREFIX}/bin/llvm-strip" --strip-unneeded {} + || true
           fi
           ( cd "${RUNNER_TEMP}" && zip -r "${GITHUB_WORKSPACE}/${{ steps.pkgmeta.outputs.zip }}" \
-              "taichi-llvm-21-${{ steps.pkgmeta.outputs.suffix }}" )
+              "taichi-llvm-${{ github.event.inputs.llvm_version }}-${{ steps.pkgmeta.outputs.suffix }}" )
           # sha256
           ( cd "${GITHUB_WORKSPACE}" && shasum -a 256 "${{ steps.pkgmeta.outputs.zip }}" > "${{ steps.pkgmeta.outputs.zip }}.sha256" || sha256sum "${{ steps.pkgmeta.outputs.zip }}" > "${{ steps.pkgmeta.outputs.zip }}.sha256" )
 
@@ -214,7 +214,7 @@ jobs:
   #   permissions:
   #     contents: write
   #   env:
-  #     LLVM_TAG: ${{ github.event.inputs.llvm_tag || vars.LLVM_TAG || 'llvmorg-21.1.1' }}
+  #     LLVM_TAG: llvmorg-${{ github.event.inputs.llvm_version || vars.LLVM_TAG || '15.0.7' }}
   #   steps:
   #     - name: Download all assets
   #       uses: actions/download-artifact@v4
@@ -233,5 +233,5 @@ jobs:
   #           Prebuilt LLVM/Clang/LLD/MLIR install trees for Taichi consumption.
   #           Tag: ${{ env.LLVM_TAG }}
   #         files: |
-  #           dist/**/taichi-llvm-21-*.zip
-  #           dist/**/taichi-llvm-21-*.zip.sha256
+  #           dist/**/taichi-llvm-${{ github.event.inputs.llvm_version }}-*.zip
+  #           dist/**/taichi-llvm-${{ github.event.inputs.llvm_version }}-*.zip.sha256

From a5448a244b086df41a9b058503165d87d90e45f4 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Mon, 15 Sep 2025 09:36:59 -0400
Subject: [PATCH 09/52] add bakc in release, with more granular naming

---
 .github/workflows/llvm-ci.yml | 100 ++++++++++++++++++++++------------
 1 file changed, 65 insertions(+), 35 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 75bd73a..76aab8e 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -1,13 +1,17 @@
 name: Build LLVM (matrix)
 
+env:
+  DEFAULT_LLVM_VERSION: '15.0.7'
+
 on:
   workflow_dispatch:
     inputs:
       llvm_version:
         description: "e.g. 15.0.7, 21.1.1, etc"
         required: false
-        default: 15.0.7
   pull_request:
+    branches:
+      - main
     paths:
      - '.github/workflows/llvm-ci.yml'
 
@@ -28,15 +32,18 @@ jobs:
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
 
-    env:
-      # manual input → repo/org var → default
-      LLVM_TAG: llvmorg-${{ github.event.inputs.llvm_version || vars.LLVM_TAG || '15.0.7' }}
-
     defaults:
       run:
         shell: bash
 
     steps:
+      - name: Set env vars
+        id: vars
+        run: |
+          LLVM_VERSION=${{ github.event.inputs.llvm_version || env.DEFAULT_LLVM_VERSION }}
+          echo "LLVM_VERSION=${LLVM_VERSION}" >> $GITHUB_ENV
+          echo "LLVM_TAG=llvmorg-${LLVM_VERSION}" >> $GITHUB_ENV
+
       - name: Checkout
         uses: actions/checkout@v4
 
@@ -205,33 +212,56 @@ jobs:
             ${{ github.workspace }}/${{ steps.pkgmeta.outputs.zip }}.sha256
           if-no-files-found: error
 
-  # might put this back later, but with more specific name, that is ok-ish on a PR
-  # # ----------  publish a GitHub Release with all zips ----------
-  # release:
-  #   name: Publish release ${{ needs.build.outputs.LLVM_TAG }}
-  #   runs-on: ubuntu-22.04
-  #   needs: build
-  #   permissions:
-  #     contents: write
-  #   env:
-  #     LLVM_TAG: llvmorg-${{ github.event.inputs.llvm_version || vars.LLVM_TAG || '15.0.7' }}
-  #   steps:
-  #     - name: Download all assets
-  #       uses: actions/download-artifact@v4
-  #       with:
-  #         path: dist
-
-  #     - name: List assets
-  #       run: ls -R dist
-
-  #     - name: Create/Update release (tag = LLVM_TAG)
-  #       uses: softprops/action-gh-release@v2
-  #       with:
-  #         tag_name: ${{ env.LLVM_TAG }}
-  #         name: LLVM assets for ${{ env.LLVM_TAG }}
-  #         body: |
-  #           Prebuilt LLVM/Clang/LLD/MLIR install trees for Taichi consumption.
-  #           Tag: ${{ env.LLVM_TAG }}
-  #         files: |
-  #           dist/**/taichi-llvm-${{ github.event.inputs.llvm_version }}-*.zip
-  #           dist/**/taichi-llvm-${{ github.event.inputs.llvm_version }}-*.zip.sha256
+  # ----------  publish a GitHub Release with all zips ----------
+  release:
+    name: Publish release ${{ needs.build.outputs.LLVM_TAG }}
+    runs-on: ubuntu-22.04
+    needs: build
+    permissions:
+      contents: write
+    steps:
+      - name: Set env vars
+        id: vars
+        run: |
+          LLVM_VERSION=${{ github.event.inputs.llvm_version || env.DEFAULT_LLVM_VERSION }}
+          echo "LLVM_VERSION=${LLVM_VERSION}" >> $GITHUB_ENV
+          echo "LLVM_TAG=llvmorg-${LLVM_VERSION}" >> $GITHUB_ENV
+      - name: Download all assets
+        uses: actions/download-artifact@v4
+        with:
+          path: dist
+
+      - name: List assets
+        run: ls -R dist
+
+      - name: Set tag name
+        id: set_tag
+        run: |
+          # Get current date/time in UTC, format YYYYMMDDHHMM
+          DATE=$(date -u +'%Y%m%d%H%M')
+          if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
+            echo "tag=llvm-${LLVM_VERSION}-${DATE}" >> $GITHUB_OUTPUT
+          else
+            PR_BRANCH="${{ github.head_ref }}"
+            PR_BRANCH_CLEAN=$(echo "$PR_BRANCH" | tr '/' '-' | tr -cd '[:alnum:]-')
+            echo "tag=llvm-${LLVM_VERSION}-${PR_BRANCH_CLEAN}-${DATE}" >> $GITHUB_OUTPUT
+          fi
+      - name: Set prerelease flag
+        id: set_prerelease
+        run: |
+          if [[ "${{ github.ref_name }}" == "main" ]]; then
+            echo "is_prerelease=false" >> $GITHUB_OUTPUT
+          else
+            echo "is_prerelease=true" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Create/Update release (tag = LLVM_TAG)
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ steps.set_tag.outputs.tag }}
+          name: ${{ steps.set_tag.outputs.tag }}
+          prerelease: ${{ steps.set_prerelease.outputs.is_prerelease }}
+          body: |
+            Prebuilt LLVM/Clang install trees for GsTaichi consumption.
+          files: |
+            dist/**

From a4079570a51c01885bafaca7f022b183a0aaac07 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Mon, 15 Sep 2025 11:40:00 -0400
Subject: [PATCH 10/52] try building with 21.1.1

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 76aab8e..f46a3ff 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -1,7 +1,7 @@
 name: Build LLVM (matrix)
 
 env:
-  DEFAULT_LLVM_VERSION: '15.0.7'
+  DEFAULT_LLVM_VERSION: '21.1.1'
 
 on:
   workflow_dispatch:

From 4729d035ac70fb1b5e560cbdbc5e7431091da175 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Mon, 15 Sep 2025 14:30:52 -0400
Subject: [PATCH 11/52] missed some version expansiosn

---
 .github/workflows/llvm-ci.yml | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index f46a3ff..e86ca24 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -1,7 +1,7 @@
 name: Build LLVM (matrix)
 
 env:
-  DEFAULT_LLVM_VERSION: '21.1.1'
+  DEFAULT_LLVM_VERSION: '15.0.7'
 
 on:
   workflow_dispatch:
@@ -163,7 +163,7 @@ jobs:
             Windows) suffix="windows-amd64" ;;
           esac
           echo "suffix=$suffix" >> "$GITHUB_OUTPUT"
-          echo "zip=taichi-llvm-${{ github.event.inputs.llvm_version }}-$suffix.zip" >> "$GITHUB_OUTPUT"
+          echo "zip=taichi-llvm-${LLVM_VERSION}-$suffix.zip" >> "$GITHUB_OUTPUT"
 
       # ----------  package (Linux/macOS) ----------
       - name: Package (Linux/macOS)
@@ -172,7 +172,7 @@ jobs:
           CMAKE_INSTALL_PREFIX: ${{ steps.prefix.outputs.prefix }}
         run: |
           set -euo pipefail
-          pkgroot="${RUNNER_TEMP}/taichi-llvm-${{ github.event.inputs.llvm_version }}-${{ steps.pkgmeta.outputs.suffix }}"
+          pkgroot="${RUNNER_TEMP}/taichi-llvm-${LLVM_VERSION}-${{ steps.pkgmeta.outputs.suffix }}"
           mkdir -p "$pkgroot"
           # copy install tree
           cp -R "${CMAKE_INSTALL_PREFIX}/." "$pkgroot/"
@@ -185,7 +185,7 @@ jobs:
               -exec "${CMAKE_INSTALL_PREFIX}/bin/llvm-strip" --strip-unneeded {} + || true
           fi
           ( cd "${RUNNER_TEMP}" && zip -r "${GITHUB_WORKSPACE}/${{ steps.pkgmeta.outputs.zip }}" \
-              "taichi-llvm-${{ github.event.inputs.llvm_version }}-${{ steps.pkgmeta.outputs.suffix }}" )
+              "taichi-llvm-${LLVM_VERSION}-${{ steps.pkgmeta.outputs.suffix }}" )
           # sha256
           ( cd "${GITHUB_WORKSPACE}" && shasum -a 256 "${{ steps.pkgmeta.outputs.zip }}" > "${{ steps.pkgmeta.outputs.zip }}.sha256" || sha256sum "${{ steps.pkgmeta.outputs.zip }}" > "${{ steps.pkgmeta.outputs.zip }}.sha256" )
 

From 949ffad41012f6361f96ce3ede9f6f240235bf88 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Mon, 15 Sep 2025 14:36:11 -0400
Subject: [PATCH 12/52] remove version in brackets

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index e86ca24..d19ee22 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -214,7 +214,7 @@ jobs:
 
   # ----------  publish a GitHub Release with all zips ----------
   release:
-    name: Publish release ${{ needs.build.outputs.LLVM_TAG }}
+    name: Publish release
     runs-on: ubuntu-22.04
     needs: build
     permissions:

From 6c13205fb3a1ee4a2ecdc41dbbdf46f34fae4020 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Mon, 15 Sep 2025 16:30:01 -0400
Subject: [PATCH 13/52] run for 21.1.1

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index d19ee22..da0431b 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -1,7 +1,7 @@
 name: Build LLVM (matrix)
 
 env:
-  DEFAULT_LLVM_VERSION: '15.0.7'
+  DEFAULT_LLVM_VERSION: '21.1.1'
 
 on:
   workflow_dispatch:

From 7f0fdfee932bd8c98c15d46aa964ead20c640187 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Tue, 16 Sep 2025 07:18:15 -0400
Subject: [PATCH 14/52] 15.0.7, disable zstd (unaailable on manylinux)

---
 .github/workflows/llvm-ci.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index da0431b..4faabcf 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -1,7 +1,7 @@
 name: Build LLVM (matrix)
 
 env:
-  DEFAULT_LLVM_VERSION: '21.1.1'
+  DEFAULT_LLVM_VERSION: '15.0.7'
 
 on:
   workflow_dispatch:
@@ -112,6 +112,7 @@ jobs:
             -DLLVM_ENABLE_ASSERTIONS=ON \
             -DLLVM_ENABLE_PROJECTS="clang" \
             -DLLVM_ENABLE_RTTI:BOOL=ON \
+            -DLLVM_ENABLE_ZSTD=OFF \
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" \
             -DLLVM_ENABLE_TERMINFO=OFF
 
@@ -141,6 +142,7 @@ jobs:
             -DLLVM_ENABLE_ASSERTIONS=ON `
             -DLLVM_ENABLE_PROJECTS="clang" `
             -DLLVM_ENABLE_RTTI:BOOL=ON `
+            -DLLVM_ENABLE_ZSTD=OFF `
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" `
             -DLLVM_ENABLE_TERMINFO=OFF
 

From 8b9342328030821b8babafebdee5d347bae56cc0 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Tue, 16 Sep 2025 20:45:20 -0400
Subject: [PATCH 15/52] add lld

---
 .github/workflows/llvm-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 2a3785b..da7ffbf 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -106,7 +106,7 @@ jobs:
             -DCMAKE_BUILD_TYPE=Release \
             -DCMAKE_INSTALL_PREFIX="${CMAKE_INSTALL_PREFIX}" \
             -DLLVM_ENABLE_ASSERTIONS=ON \
-            -DLLVM_ENABLE_PROJECTS="clang" \
+            -DLLVM_ENABLE_PROJECTS="clang;lld" \
             -DLLVM_ENABLE_RTTI:BOOL=ON \
             -DLLVM_ENABLE_ZSTD=OFF \
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" \
@@ -136,7 +136,7 @@ jobs:
             -DCMAKE_BUILD_TYPE=Release `
             -DCMAKE_INSTALL_PREFIX="$env:CMAKE_INSTALL_PREFIX" `
             -DLLVM_ENABLE_ASSERTIONS=ON `
-            -DLLVM_ENABLE_PROJECTS="clang" `
+            -DLLVM_ENABLE_PROJECTS="clang;lld" `
             -DLLVM_ENABLE_RTTI:BOOL=ON `
             -DLLVM_ENABLE_ZSTD=OFF `
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" `

From 6c610a0766d5be03df54a5c8a919813efe7e31b0 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Wed, 17 Sep 2025 10:22:01 -0400
Subject: [PATCH 16/52] try running in ubuntu 18.04 container

---
 .github/workflows/llvm-ci.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index da7ffbf..0ab6ff0 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,6 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
+    container: ${{ startsWith(matrix.os, 'ubuntu-') && 'ubuntu:18.04' || '' }}
 
     defaults:
       run:

From 0e61b0baf84a17bd323ef1fbb2d30fe0970722cc Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Wed, 17 Sep 2025 10:30:01 -0400
Subject: [PATCH 17/52] u20

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 0ab6ff0..d26dd56 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,7 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
-    container: ${{ startsWith(matrix.os, 'ubuntu-') && 'ubuntu:18.04' || '' }}
+    container: ${{ startsWith(matrix.os, 'ubuntu-') && 'ubuntu:20.04' || '' }}
 
     defaults:
       run:

From d0b7004ec7827768cb6d1b0af95aaa97198e91cc Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Wed, 17 Sep 2025 10:49:08 -0400
Subject: [PATCH 18/52] manylinux

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index d26dd56..5b7dd81 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,7 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
-    container: ${{ startsWith(matrix.os, 'ubuntu-') && 'ubuntu:20.04' || '' }}
+    container: ${{ startsWith(matrix.os, 'ubuntu-') && 'quay.io/pypa/manylinux_2_27_x86_64:latest' || '' }}
 
     defaults:
       run:

From 8688277bb2181d5ec279c8af4c28f35a04b03efa Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Wed, 17 Sep 2025 10:49:28 -0400
Subject: [PATCH 19/52] manylinux 2 28

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 5b7dd81..13b9f8c 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,7 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
-    container: ${{ startsWith(matrix.os, 'ubuntu-') && 'quay.io/pypa/manylinux_2_27_x86_64:latest' || '' }}
+    container: ${{ startsWith(matrix.os, 'ubuntu-') && 'quay.io/pypa/manylinux_2_28_x86_64:latest' || '' }}
 
     defaults:
       run:

From 4adf16904b2ead45f233d1d20b6b81aa9c4c7c12 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Wed, 17 Sep 2025 10:51:20 -0400
Subject: [PATCH 20/52] remove sudo

---
 .github/workflows/llvm-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 13b9f8c..ae834b6 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -57,8 +57,8 @@ jobs:
       - name: Install prerequisites (Linux)
         if: runner.os == 'Linux'
         run: |
-          sudo apt-get update
-          sudo apt-get install -y --no-install-recommends git cmake ninja-build build-essential zip
+          apt-get update
+          apt-get install -y --no-install-recommends git cmake ninja-build build-essential zip
           python -m pip install --upgrade pip
 
       - name: Install prerequisites (macOS)

From 3e522621b63986f87390d1dfc209e9bb8510d3bc Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Wed, 17 Sep 2025 10:56:26 -0400
Subject: [PATCH 21/52] github rnner 20.04 image

---
 .github/workflows/llvm-ci.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index ae834b6..f179270 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,7 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
-    container: ${{ startsWith(matrix.os, 'ubuntu-') && 'quay.io/pypa/manylinux_2_28_x86_64:latest' || '' }}
+    container: ${{ startsWith(matrix.os, 'ubuntu-') && 'tcardonne/github-runner:ubuntu-20.04' || '' }}
 
     defaults:
       run:
@@ -57,8 +57,8 @@ jobs:
       - name: Install prerequisites (Linux)
         if: runner.os == 'Linux'
         run: |
-          apt-get update
-          apt-get install -y --no-install-recommends git cmake ninja-build build-essential zip
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends git cmake ninja-build build-essential zip
           python -m pip install --upgrade pip
 
       - name: Install prerequisites (macOS)

From 29a7ab08d33ea93ffd314e9a9f6b6274d6282d2b Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Wed, 17 Sep 2025 11:35:08 -0400
Subject: [PATCH 22/52] container only for ubuntu x86

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index f179270..c49b25d 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,7 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
-    container: ${{ startsWith(matrix.os, 'ubuntu-') && 'tcardonne/github-runner:ubuntu-20.04' || '' }}
+    container: ${{ matrix.os == 'ubuntu-22.04' && 'tcardonne/github-runner:ubuntu-20.04' || '' }}
 
     defaults:
       run:

From 8eafdf7b9c63e5cc396a2f977178375efaaa9c94 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Fri, 19 Sep 2025 19:33:21 -0400
Subject: [PATCH 23/52] retry manylinux for u22 x86

---
 .github/workflows/llvm-ci.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index c49b25d..a15f8a6 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,7 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
-    container: ${{ matrix.os == 'ubuntu-22.04' && 'tcardonne/github-runner:ubuntu-20.04' || '' }}
+    container: ${{ matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux_2_28_x86_64:latest' || '' }}
 
     defaults:
       run:
@@ -57,8 +57,8 @@ jobs:
       - name: Install prerequisites (Linux)
         if: runner.os == 'Linux'
         run: |
-          sudo apt-get update
-          sudo apt-get install -y --no-install-recommends git cmake ninja-build build-essential zip
+          # sudo apt-get update
+          yum install -y git cmake ninja-build gcc gcc-c++ make zip
           python -m pip install --upgrade pip
 
       - name: Install prerequisites (macOS)

From 08da9687de1a2d2b03217b6c837210652f43ab9d Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Fri, 19 Sep 2025 19:42:45 -0400
Subject: [PATCH 24/52] dont install gcc or python

---
 .github/workflows/llvm-ci.yml | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index a15f8a6..6333506 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -44,10 +44,10 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.10'
+      # - name: Set up Python
+      #   uses: actions/setup-python@v5
+      #   with:
+      #     python-version: '3.10'
 
       # --- calm the git default-branch hint ---
       - name: Silence git default-branch hint
@@ -57,9 +57,10 @@ jobs:
       - name: Install prerequisites (Linux)
         if: runner.os == 'Linux'
         run: |
-          # sudo apt-get update
-          yum install -y git cmake ninja-build gcc gcc-c++ make zip
-          python -m pip install --upgrade pip
+          yum install -y git cmake ninja-build
+      #     # sudo apt-get update
+          # yum install -y git cmake ninja-build gcc gcc-c++ make zip
+      #     # python -m pip install --upgrade pip
 
       - name: Install prerequisites (macOS)
         if: runner.os == 'macOS'

From f93e6bd8ab75204435de22ce8c12aeaf0da86906 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Fri, 19 Sep 2025 19:45:12 -0400
Subject: [PATCH 25/52] dont install ninja on mac

---
 .github/workflows/llvm-ci.yml | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 6333506..fd7e792 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -62,12 +62,12 @@ jobs:
           # yum install -y git cmake ninja-build gcc gcc-c++ make zip
       #     # python -m pip install --upgrade pip
 
-      - name: Install prerequisites (macOS)
-        if: runner.os == 'macOS'
-        run: |
-          brew update
-          brew install cmake ninja || true
-          python3 -m pip install --upgrade pip
+      # - name: Install prerequisites (macOS)
+      #   if: runner.os == 'macOS'
+      #   run: |
+      #     brew update
+      #     brew install cmake ninja || true
+      #     python3 -m pip install --upgrade pip
 
       - name: Install prerequisites (Windows)
         if: runner.os == 'Windows'

From 4d5b25ec60604df7239933f90ba6f7ece01b8a21 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sat, 20 Sep 2025 07:31:10 -0400
Subject: [PATCH 26/52] build x86 linux in manylinux2014

---
 .github/workflows/llvm-ci.yml | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index fd7e792..ad5182f 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,8 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
-    container: ${{ matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux_2_28_x86_64:latest' || '' }}
-
+    container: ${{ (matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux2014_x86_64:latest') || (matrix.os == 'ubuntu-22.04-arm' && 'quay.io/pypa/manylinux_2_28_aarch64:latest') || '' }}  
     defaults:
       run:
         shell: bash
@@ -54,16 +53,16 @@ jobs:
         run: git config --global init.defaultBranch main
 
       # ---------- Prereqs ----------
-      - name: Install prerequisites (Linux)
-        if: runner.os == 'Linux'
-        run: |
-          yum install -y git cmake ninja-build
+      # - name: Install prerequisites (Linux)
+      #   if: runner.os == 'Linux'
+      #   run: |
+      #     yum install -y git cmake ninja-build
       #     # sudo apt-get update
           # yum install -y git cmake ninja-build gcc gcc-c++ make zip
       #     # python -m pip install --upgrade pip
 
       # - name: Install prerequisites (macOS)
-      #   if: runner.os == 'macOS'
+        # if: runner.os == 'macOS'
       #   run: |
       #     brew update
       #     brew install cmake ninja || true

From 79ea028efca3613d6a77696c14fd0e0cee87b6a6 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sat, 20 Sep 2025 07:35:39 -0400
Subject: [PATCH 27/52] downgrade actions to be comaible mnaylinux2014

---
 .github/workflows/llvm-ci.yml | 25 ++-----------------------
 1 file changed, 2 insertions(+), 23 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index ad5182f..1ad104f 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -41,33 +41,12 @@ jobs:
           echo "LLVM_TAG=llvmorg-${LLVM_VERSION}" >> $GITHUB_ENV
 
       - name: Checkout
-        uses: actions/checkout@v4
-
-      # - name: Set up Python
-      #   uses: actions/setup-python@v5
-      #   with:
-      #     python-version: '3.10'
+        uses: actions/checkout@v3
 
       # --- calm the git default-branch hint ---
       - name: Silence git default-branch hint
         run: git config --global init.defaultBranch main
 
-      # ---------- Prereqs ----------
-      # - name: Install prerequisites (Linux)
-      #   if: runner.os == 'Linux'
-      #   run: |
-      #     yum install -y git cmake ninja-build
-      #     # sudo apt-get update
-          # yum install -y git cmake ninja-build gcc gcc-c++ make zip
-      #     # python -m pip install --upgrade pip
-
-      # - name: Install prerequisites (macOS)
-        # if: runner.os == 'macOS'
-      #   run: |
-      #     brew update
-      #     brew install cmake ninja || true
-      #     python3 -m pip install --upgrade pip
-
       - name: Install prerequisites (Windows)
         if: runner.os == 'Windows'
         shell: pwsh
@@ -203,7 +182,7 @@ jobs:
 
       # ---------- Upload artifacts (for aggregator) ----------
       - name: Upload packaged asset
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
           name: ${{ steps.pkgmeta.outputs.zip }}
           path: |

From ed618b921dd3ed9296f8f6ee4bc348ea7743f2b8 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sat, 20 Sep 2025 07:48:48 -0400
Subject: [PATCH 28/52] ninja from python

---
 .github/workflows/llvm-ci.yml | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 1ad104f..d22d367 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -41,12 +41,27 @@ jobs:
           echo "LLVM_TAG=llvmorg-${LLVM_VERSION}" >> $GITHUB_ENV
 
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # --- calm the git default-branch hint ---
       - name: Silence git default-branch hint
         run: git config --global init.defaultBranch main
 
+      # ---------- Prereqs ----------
+      - name: Install prerequisites (Linux)
+        if: runner.os == 'Linux'
+        run: |
+          export PATH=/opt/python/cp310-cp310/bin:$PATH
+          pip install ninja
+          ln -s /opt/python/cp310-cp310/bin/ninja /usr/bin/ninja-build
+    
+      # - name: Install prerequisites (macOS)
+        # if: runner.os == 'macOS'
+      #   run: |
+      #     brew update
+      #     brew install cmake ninja || true
+      #     python3 -m pip install --upgrade pip
+
       - name: Install prerequisites (Windows)
         if: runner.os == 'Windows'
         shell: pwsh
@@ -182,7 +197,7 @@ jobs:
 
       # ---------- Upload artifacts (for aggregator) ----------
       - name: Upload packaged asset
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ steps.pkgmeta.outputs.zip }}
           path: |

From a674e92fdc0558a89dc9da9f7f546f7f0c2d8643 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sat, 20 Sep 2025 07:49:58 -0400
Subject: [PATCH 29/52] 2 28

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index d22d367..ee21e88 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,7 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
-    container: ${{ (matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux2014_x86_64:latest') || (matrix.os == 'ubuntu-22.04-arm' && 'quay.io/pypa/manylinux_2_28_aarch64:latest') || '' }}  
+    container: ${{ (matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux_2_28_x86_64:latest') || (matrix.os == 'ubuntu-22.04-arm' && 'quay.io/pypa/manylinux_2_28_aarch64:latest') || '' }}  
     defaults:
       run:
         shell: bash

From 5482edafd3e3116a1c6b370e1d709759a9b432eb Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sat, 20 Sep 2025 08:00:15 -0400
Subject: [PATCH 30/52] disable xml2, zlib

---
 .github/workflows/llvm-ci.yml | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index ee21e88..03f7f86 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -55,13 +55,6 @@ jobs:
           pip install ninja
           ln -s /opt/python/cp310-cp310/bin/ninja /usr/bin/ninja-build
     
-      # - name: Install prerequisites (macOS)
-        # if: runner.os == 'macOS'
-      #   run: |
-      #     brew update
-      #     brew install cmake ninja || true
-      #     python3 -m pip install --upgrade pip
-
       - name: Install prerequisites (Windows)
         if: runner.os == 'Windows'
         shell: pwsh
@@ -100,9 +93,9 @@ jobs:
           cmake -S llvm -B build -G Ninja \
             -DCMAKE_BUILD_TYPE=Release \
             -DCMAKE_INSTALL_PREFIX="${CMAKE_INSTALL_PREFIX}" \
-            -DLLVM_ENABLE_ASSERTIONS=ON \
             -DLLVM_ENABLE_PROJECTS="clang;lld" \
-            -DLLVM_ENABLE_RTTI:BOOL=ON \
+            -DLLVM_ENABLE_LIBXML2=OFF \
+            -DLLVM_ENABLE_ZLIB=OFF \
             -DLLVM_ENABLE_ZSTD=OFF \
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" \
             -DLLVM_ENABLE_TERMINFO=OFF
@@ -130,9 +123,9 @@ jobs:
           cmake -S llvm -B build -G "Ninja" `
             -DCMAKE_BUILD_TYPE=Release `
             -DCMAKE_INSTALL_PREFIX="$env:CMAKE_INSTALL_PREFIX" `
-            -DLLVM_ENABLE_ASSERTIONS=ON `
             -DLLVM_ENABLE_PROJECTS="clang;lld" `
-            -DLLVM_ENABLE_RTTI:BOOL=ON `
+            -DLLVM_ENABLE_LIBXML2=OFF `
+            -DLLVM_ENABLE_ZLIB=OFF `
             -DLLVM_ENABLE_ZSTD=OFF `
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" `
             -DLLVM_ENABLE_TERMINFO=OFF

From bf77dc6217e3a31f2697ca62c32b78daed23acd5 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sat, 20 Sep 2025 09:13:17 -0400
Subject: [PATCH 31/52] install zip on linux; migrate windows build to msvc;
 change windows threading model

---
 .github/workflows/llvm-ci.yml | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 03f7f86..22e737c 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -51,6 +51,7 @@ jobs:
       - name: Install prerequisites (Linux)
         if: runner.os == 'Linux'
         run: |
+          yum install -y zip
           export PATH=/opt/python/cp310-cp310/bin:$PATH
           pip install ninja
           ln -s /opt/python/cp310-cp310/bin/ninja /usr/bin/ninja-build
@@ -62,6 +63,8 @@ jobs:
           python -m pip install --upgrade pip
           python -m pip install ninja cmake
           git config --global core.autocrlf false
+          Invoke-WebRequest -Uri "https://aka.ms/vs/17/release/vs_BuildTools.exe" -OutFile "vs.exe"
+          .\vs.exe --passive --wait --norestart --includeRecommended --add Microsoft.VisualStudio.Workload.VCTools
 
       # ---------- Compute install prefix ----------
       - name: Compute install prefix
@@ -113,6 +116,13 @@ jobs:
           $ErrorActionPreference = 'Stop'
           Write-Host "Using LLVM_TAG=$env:LLVM_TAG"
 
+          $vsPath = "C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\Common7\Tools\VsDevCmd.bat"
+          cmd /c "`"$vsPath`" && set" | ForEach-Object {
+              if ($_ -match '^([^=]+)=(.*)') {
+                  [Environment]::SetEnvironmentVariable($matches[1], $matches[2])
+              }
+          }
+
           New-Item -ItemType Directory -Force -Path llvm-project | Out-Null
           Set-Location llvm-project
           git init
@@ -120,7 +130,7 @@ jobs:
           git fetch --depth 1 origin "$env:LLVM_TAG"
           git checkout --detach FETCH_HEAD
 
-          cmake -S llvm -B build -G "Ninja" `
+          cmake -S llvm -B build -G "Visual Studio 17 2022" -A x64 `
             -DCMAKE_BUILD_TYPE=Release `
             -DCMAKE_INSTALL_PREFIX="$env:CMAKE_INSTALL_PREFIX" `
             -DLLVM_ENABLE_PROJECTS="clang;lld" `
@@ -128,7 +138,8 @@ jobs:
             -DLLVM_ENABLE_ZLIB=OFF `
             -DLLVM_ENABLE_ZSTD=OFF `
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" `
-            -DLLVM_ENABLE_TERMINFO=OFF
+            -DLLVM_ENABLE_TERMINFO=OFF `
+            -DCMAKE_MSVC_RUNTIME_LIBRARY="MultiThreadedDLL"
 
           cmake --build build --target all
           cmake --build build --target install

From f975b927db7b263a82db41a91f52db143f311abf Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sat, 20 Sep 2025 11:53:53 -0400
Subject: [PATCH 32/52] remove clang and lld from windows build

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 22e737c..e113e24 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -133,7 +133,7 @@ jobs:
           cmake -S llvm -B build -G "Visual Studio 17 2022" -A x64 `
             -DCMAKE_BUILD_TYPE=Release `
             -DCMAKE_INSTALL_PREFIX="$env:CMAKE_INSTALL_PREFIX" `
-            -DLLVM_ENABLE_PROJECTS="clang;lld" `
+            -DLLVM_ENABLE_PROJECTS="" `
             -DLLVM_ENABLE_LIBXML2=OFF `
             -DLLVM_ENABLE_ZLIB=OFF `
             -DLLVM_ENABLE_ZSTD=OFF `

From 1d7044c978f055d2ca2df4ed617f6d8e37b1cbbf Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sat, 20 Sep 2025 12:51:35 -0400
Subject: [PATCH 33/52] put back rtti

---
 .github/workflows/llvm-ci.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index e113e24..eb9c487 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -97,6 +97,7 @@ jobs:
             -DCMAKE_BUILD_TYPE=Release \
             -DCMAKE_INSTALL_PREFIX="${CMAKE_INSTALL_PREFIX}" \
             -DLLVM_ENABLE_PROJECTS="clang;lld" \
+            -DLLVM_ENABLE_RTTI:BOOL=ON \
             -DLLVM_ENABLE_LIBXML2=OFF \
             -DLLVM_ENABLE_ZLIB=OFF \
             -DLLVM_ENABLE_ZSTD=OFF \
@@ -134,6 +135,7 @@ jobs:
             -DCMAKE_BUILD_TYPE=Release `
             -DCMAKE_INSTALL_PREFIX="$env:CMAKE_INSTALL_PREFIX" `
             -DLLVM_ENABLE_PROJECTS="" `
+            -DLLVM_ENABLE_RTTI:BOOL=ON `
             -DLLVM_ENABLE_LIBXML2=OFF `
             -DLLVM_ENABLE_ZLIB=OFF `
             -DLLVM_ENABLE_ZSTD=OFF `

From add69ddc99deaf466eea5f28e80bae8527e55136 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sat, 20 Sep 2025 15:26:27 -0400
Subject: [PATCH 34/52] update windows build command to ahve release etc

---
 .github/workflows/llvm-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index eb9c487..2bc62ea 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -143,8 +143,8 @@ jobs:
             -DLLVM_ENABLE_TERMINFO=OFF `
             -DCMAKE_MSVC_RUNTIME_LIBRARY="MultiThreadedDLL"
 
-          cmake --build build --target all
-          cmake --build build --target install
+          cmake --build build --config Release --target ALL_BUILD
+          cmake --build build --config Release --target INSTALL
 
       # ----------  compute package naming ----------
       - name: Compute package name

From c2a8568bc70fa6c8249cfe35e30353baaf618ab2 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sat, 20 Sep 2025 15:29:54 -0400
Subject: [PATCH 35/52] add clang back to windows build

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 2bc62ea..7a0d5c5 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -134,7 +134,7 @@ jobs:
           cmake -S llvm -B build -G "Visual Studio 17 2022" -A x64 `
             -DCMAKE_BUILD_TYPE=Release `
             -DCMAKE_INSTALL_PREFIX="$env:CMAKE_INSTALL_PREFIX" `
-            -DLLVM_ENABLE_PROJECTS="" `
+            -DLLVM_ENABLE_PROJECTS="clang;lld" `
             -DLLVM_ENABLE_RTTI:BOOL=ON `
             -DLLVM_ENABLE_LIBXML2=OFF `
             -DLLVM_ENABLE_ZLIB=OFF `

From c0923784b9637e2d7bb32bf48113c23e01c8274c Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 10:47:45 -0400
Subject: [PATCH 36/52] build llvm inside manylinux2014, otherwise linker
 errors later

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 7a0d5c5..ff3d70e 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,7 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
-    container: ${{ (matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux_2_28_x86_64:latest') || (matrix.os == 'ubuntu-22.04-arm' && 'quay.io/pypa/manylinux_2_28_aarch64:latest') || '' }}  
+    container: ${{ (matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux2014_64:latest') || (matrix.os == 'ubuntu-22.04-arm' && 'quay.io/pypa/manylinux2014_aarch64:latest') || '' }}  
     defaults:
       run:
         shell: bash

From c6974c33898042bfe19815174c93dfdeb8962424 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 10:58:43 -0400
Subject: [PATCH 37/52] manylinux 2014

---
 .github/workflows/llvm-ci.yml | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index ff3d70e..b80edba 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,7 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
-    container: ${{ (matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux2014_64:latest') || (matrix.os == 'ubuntu-22.04-arm' && 'quay.io/pypa/manylinux2014_aarch64:latest') || '' }}  
+    container: ${{ (matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux2014_x86_64:latest') || (matrix.os == 'ubuntu-22.04-arm' && 'quay.io/pypa/manylinux2014_aarch64:latest') || '' }}  
     defaults:
       run:
         shell: bash
@@ -40,8 +40,8 @@ jobs:
           echo "LLVM_VERSION=${LLVM_VERSION}" >> $GITHUB_ENV
           echo "LLVM_TAG=llvmorg-${LLVM_VERSION}" >> $GITHUB_ENV
 
-      - name: Checkout
-        uses: actions/checkout@v4
+      # - name: Checkout
+      #   uses: actions/checkout@v4
 
       # --- calm the git default-branch hint ---
       - name: Silence git default-branch hint
@@ -203,7 +203,7 @@ jobs:
 
       # ---------- Upload artifacts (for aggregator) ----------
       - name: Upload packaged asset
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
           name: ${{ steps.pkgmeta.outputs.zip }}
           path: |
@@ -226,7 +226,7 @@ jobs:
           echo "LLVM_VERSION=${LLVM_VERSION}" >> $GITHUB_ENV
           echo "LLVM_TAG=llvmorg-${LLVM_VERSION}" >> $GITHUB_ENV
       - name: Download all assets
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v3
         with:
           path: dist
 

From be13c7ab0eeefe56950e7bbfa3f54dec0e40b8b1 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 11:04:08 -0400
Subject: [PATCH 38/52] install node 20

---
 .github/workflows/llvm-ci.yml | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index b80edba..084083e 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -56,6 +56,11 @@ jobs:
           pip install ninja
           ln -s /opt/python/cp310-cp310/bin/ninja /usr/bin/ninja-build
     
+          # Install Node.js 20 for upload-artifact@v4
+          curl -fsSL https://nodejs.org/dist/v20.11.1/node-v20.11.1-linux-x64.tar.xz | tar -xJ -C /opt/
+          ln -sf /opt/node-v20.11.1-linux-x64/bin/node /usr/bin/node
+          ln -sf /opt/node-v20.11.1-linux-x64/bin/npm /usr/bin/npm
+
       - name: Install prerequisites (Windows)
         if: runner.os == 'Windows'
         shell: pwsh
@@ -203,7 +208,7 @@ jobs:
 
       # ---------- Upload artifacts (for aggregator) ----------
       - name: Upload packaged asset
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ steps.pkgmeta.outputs.zip }}
           path: |
@@ -226,7 +231,7 @@ jobs:
           echo "LLVM_VERSION=${LLVM_VERSION}" >> $GITHUB_ENV
           echo "LLVM_TAG=llvmorg-${LLVM_VERSION}" >> $GITHUB_ENV
       - name: Download all assets
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: dist
 

From bdb20e3821ef324bd7f34bb8f972e5b2a8850668 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 11:06:34 -0400
Subject: [PATCH 39/52] put back checkout to check the nod20 worked

---
 .github/workflows/llvm-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 084083e..a874f52 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -40,8 +40,8 @@ jobs:
           echo "LLVM_VERSION=${LLVM_VERSION}" >> $GITHUB_ENV
           echo "LLVM_TAG=llvmorg-${LLVM_VERSION}" >> $GITHUB_ENV
 
-      # - name: Checkout
-      #   uses: actions/checkout@v4
+      - name: Checkout
+        uses: actions/checkout@v4
 
       # --- calm the git default-branch hint ---
       - name: Silence git default-branch hint

From c28f9afba2fc929baecb0dba36b34fc130187a74 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 11:08:14 -0400
Subject: [PATCH 40/52] move checkout

---
 .github/workflows/llvm-ci.yml | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index a874f52..41f7ec6 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -40,9 +40,6 @@ jobs:
           echo "LLVM_VERSION=${LLVM_VERSION}" >> $GITHUB_ENV
           echo "LLVM_TAG=llvmorg-${LLVM_VERSION}" >> $GITHUB_ENV
 
-      - name: Checkout
-        uses: actions/checkout@v4
-
       # --- calm the git default-branch hint ---
       - name: Silence git default-branch hint
         run: git config --global init.defaultBranch main
@@ -71,6 +68,10 @@ jobs:
           Invoke-WebRequest -Uri "https://aka.ms/vs/17/release/vs_BuildTools.exe" -OutFile "vs.exe"
           .\vs.exe --passive --wait --norestart --includeRecommended --add Microsoft.VisualStudio.Workload.VCTools
 
+      # ---------- Checkout ----------
+      - name: Checkout
+        uses: actions/checkout@v4
+
       # ---------- Compute install prefix ----------
       - name: Compute install prefix
         id: prefix

From 51e2bc77e3478b98cb8a379fb9ae40504f5d60fb Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 11:09:56 -0400
Subject: [PATCH 41/52] try removing blank line

---
 .github/workflows/llvm-ci.yml | 1 -
 1 file changed, 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 41f7ec6..f4b6800 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -52,7 +52,6 @@ jobs:
           export PATH=/opt/python/cp310-cp310/bin:$PATH
           pip install ninja
           ln -s /opt/python/cp310-cp310/bin/ninja /usr/bin/ninja-build
-    
           # Install Node.js 20 for upload-artifact@v4
           curl -fsSL https://nodejs.org/dist/v20.11.1/node-v20.11.1-linux-x64.tar.xz | tar -xJ -C /opt/
           ln -sf /opt/node-v20.11.1-linux-x64/bin/node /usr/bin/node

From fe5e1aa6a799b8db5827e6766f731ef58e749270 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 11:11:28 -0400
Subject: [PATCH 42/52] remove comment

---
 .github/workflows/llvm-ci.yml | 1 -
 1 file changed, 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index f4b6800..e29b4e1 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -52,7 +52,6 @@ jobs:
           export PATH=/opt/python/cp310-cp310/bin:$PATH
           pip install ninja
           ln -s /opt/python/cp310-cp310/bin/ninja /usr/bin/ninja-build
-          # Install Node.js 20 for upload-artifact@v4
           curl -fsSL https://nodejs.org/dist/v20.11.1/node-v20.11.1-linux-x64.tar.xz | tar -xJ -C /opt/
           ln -sf /opt/node-v20.11.1-linux-x64/bin/node /usr/bin/node
           ln -sf /opt/node-v20.11.1-linux-x64/bin/npm /usr/bin/npm

From c4e966b42e38f6f6db46ce175ce7674e616a4ab1 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 11:18:13 -0400
Subject: [PATCH 43/52] insecure node

---
 .github/workflows/llvm-ci.yml | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index e29b4e1..7898240 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -31,6 +31,10 @@ jobs:
     defaults:
       run:
         shell: bash
+    env:
+      ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
+      ACTIONS_RUNNER_FORCED_INTERNAL_NODE_VERSION: node16
+      ACTIONS_RUNNER_FORCE_ACTIONS_NODE_VERSION: node16
 
     steps:
       - name: Set env vars
@@ -52,9 +56,13 @@ jobs:
           export PATH=/opt/python/cp310-cp310/bin:$PATH
           pip install ninja
           ln -s /opt/python/cp310-cp310/bin/ninja /usr/bin/ninja-build
-          curl -fsSL https://nodejs.org/dist/v20.11.1/node-v20.11.1-linux-x64.tar.xz | tar -xJ -C /opt/
-          ln -sf /opt/node-v20.11.1-linux-x64/bin/node /usr/bin/node
-          ln -sf /opt/node-v20.11.1-linux-x64/bin/npm /usr/bin/npm
+          # Install Node.js 16 which is more compatible with manylinux2014
+          curl -fsSL https://nodejs.org/dist/v16.20.2/node-v16.20.2-linux-x64.tar.xz | tar -xJ -C /opt/
+          ln -sf /opt/node-v16.20.2-linux-x64/bin/node /usr/bin/node
+          ln -sf /opt/node-v16.20.2-linux-x64/bin/npm /usr/bin/npm
+          # Verify it works
+          node --version
+          npm --version
 
       - name: Install prerequisites (Windows)
         if: runner.os == 'Windows'

From 750e8208c622c68aedfd93622348f8f1e3f2e0c0 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 11:19:30 -0400
Subject: [PATCH 44/52] checkout v3

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 7898240..6fc4074 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -76,7 +76,7 @@ jobs:
 
       # ---------- Checkout ----------
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v3
 
       # ---------- Compute install prefix ----------
       - name: Compute install prefix

From e7bb023738ca2c7e8ac38ecba250ace717dbe763 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 11:21:16 -0400
Subject: [PATCH 45/52] upload v3

---
 .github/workflows/llvm-ci.yml | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 6fc4074..b761ed1 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -64,6 +64,14 @@ jobs:
           node --version
           npm --version
 
+      - name: Upload packaged asset
+        uses: actions/upload-artifact@v3
+        with:
+          name: foo
+          path: |
+            bar
+          if-no-files-found: error
+
       - name: Install prerequisites (Windows)
         if: runner.os == 'Windows'
         shell: pwsh
@@ -74,9 +82,9 @@ jobs:
           Invoke-WebRequest -Uri "https://aka.ms/vs/17/release/vs_BuildTools.exe" -OutFile "vs.exe"
           .\vs.exe --passive --wait --norestart --includeRecommended --add Microsoft.VisualStudio.Workload.VCTools
 
-      # ---------- Checkout ----------
-      - name: Checkout
-        uses: actions/checkout@v3
+      # # ---------- Checkout ----------
+      # - name: Checkout
+      #   uses: actions/checkout@v3
 
       # ---------- Compute install prefix ----------
       - name: Compute install prefix

From 2df582eefaa71e01638a4805d206ea4e8b4b9259 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 12:12:09 -0400
Subject: [PATCH 46/52] staically link libstdc++

---
 .github/workflows/llvm-ci.yml | 27 +++------------------------
 1 file changed, 3 insertions(+), 24 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index b761ed1..4269d8d 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -27,14 +27,10 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
-    container: ${{ (matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux2014_x86_64:latest') || (matrix.os == 'ubuntu-22.04-arm' && 'quay.io/pypa/manylinux2014_aarch64:latest') || '' }}  
+    container: ${{ (matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux_2_28_x86_64:latest') || (matrix.os == 'ubuntu-22.04-arm' && 'quay.io/pypa/manylinux_2_28_aarch64:latest') || '' }}  
     defaults:
       run:
         shell: bash
-    env:
-      ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
-      ACTIONS_RUNNER_FORCED_INTERNAL_NODE_VERSION: node16
-      ACTIONS_RUNNER_FORCE_ACTIONS_NODE_VERSION: node16
 
     steps:
       - name: Set env vars
@@ -56,21 +52,6 @@ jobs:
           export PATH=/opt/python/cp310-cp310/bin:$PATH
           pip install ninja
           ln -s /opt/python/cp310-cp310/bin/ninja /usr/bin/ninja-build
-          # Install Node.js 16 which is more compatible with manylinux2014
-          curl -fsSL https://nodejs.org/dist/v16.20.2/node-v16.20.2-linux-x64.tar.xz | tar -xJ -C /opt/
-          ln -sf /opt/node-v16.20.2-linux-x64/bin/node /usr/bin/node
-          ln -sf /opt/node-v16.20.2-linux-x64/bin/npm /usr/bin/npm
-          # Verify it works
-          node --version
-          npm --version
-
-      - name: Upload packaged asset
-        uses: actions/upload-artifact@v3
-        with:
-          name: foo
-          path: |
-            bar
-          if-no-files-found: error
 
       - name: Install prerequisites (Windows)
         if: runner.os == 'Windows'
@@ -82,10 +63,6 @@ jobs:
           Invoke-WebRequest -Uri "https://aka.ms/vs/17/release/vs_BuildTools.exe" -OutFile "vs.exe"
           .\vs.exe --passive --wait --norestart --includeRecommended --add Microsoft.VisualStudio.Workload.VCTools
 
-      # # ---------- Checkout ----------
-      # - name: Checkout
-      #   uses: actions/checkout@v3
-
       # ---------- Compute install prefix ----------
       - name: Compute install prefix
         id: prefix
@@ -120,6 +97,8 @@ jobs:
             -DLLVM_ENABLE_RTTI:BOOL=ON \
             -DLLVM_ENABLE_LIBXML2=OFF \
             -DLLVM_ENABLE_ZLIB=OFF \
+            -DCMAKE_EXE_LINKER_FLAGS="-static-libstdc++ -static-libgcc" \
+            -DCMAKE_SHARED_LINKER_FLAGS="-static-libstdc++ -static-libgcc" \
             -DLLVM_ENABLE_ZSTD=OFF \
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" \
             -DLLVM_ENABLE_TERMINFO=OFF

From 4cc21a4fec58ecc933db24574097d04f23f8bd56 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 14:31:15 -0400
Subject: [PATCH 47/52] remove static linking

---
 .github/workflows/llvm-ci.yml | 2 --
 1 file changed, 2 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 4269d8d..bbe8061 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -97,8 +97,6 @@ jobs:
             -DLLVM_ENABLE_RTTI:BOOL=ON \
             -DLLVM_ENABLE_LIBXML2=OFF \
             -DLLVM_ENABLE_ZLIB=OFF \
-            -DCMAKE_EXE_LINKER_FLAGS="-static-libstdc++ -static-libgcc" \
-            -DCMAKE_SHARED_LINKER_FLAGS="-static-libstdc++ -static-libgcc" \
             -DLLVM_ENABLE_ZSTD=OFF \
             -DLLVM_TARGETS_TO_BUILD="host;NVPTX;AMDGPU" \
             -DLLVM_ENABLE_TERMINFO=OFF

From 4f41ccc9fe5fdbd482ec7e032ee2730b94ebf01e Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 14:40:42 -0400
Subject: [PATCH 48/52] build 16.0.6

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index bbe8061..f5cf5e1 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -1,7 +1,7 @@
 name: Build LLVM (matrix)
 
 env:
-  DEFAULT_LLVM_VERSION: '15.0.7'
+  DEFAULT_LLVM_VERSION: '16.0.6'
 
 on:
   workflow_dispatch:

From 0ce02c27a3a7e2f463a58ba6852752bce5b5b5ef Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 18:04:56 -0400
Subject: [PATCH 49/52] build 17.0.6

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index f5cf5e1..14560d6 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -1,7 +1,7 @@
 name: Build LLVM (matrix)
 
 env:
-  DEFAULT_LLVM_VERSION: '16.0.6'
+  DEFAULT_LLVM_VERSION: '17.0.6'
 
 on:
   workflow_dispatch:

From 563c8123e6f664cb6444f77d7f9c4904cf50a345 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 18:08:25 -0400
Subject: [PATCH 50/52] build 18.1.8

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index 14560d6..d15e103 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -1,7 +1,7 @@
 name: Build LLVM (matrix)
 
 env:
-  DEFAULT_LLVM_VERSION: '17.0.6'
+  DEFAULT_LLVM_VERSION: '18.1.8'
 
 on:
   workflow_dispatch:

From 3f85a806b685685896d1ed8e6710e0f028cf84f1 Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 19:08:10 -0400
Subject: [PATCH 51/52] remove arm build; retry 17.0.6

---
 .github/workflows/llvm-ci.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index d15e103..b8cceb4 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -1,13 +1,13 @@
 name: Build LLVM (matrix)
 
 env:
-  DEFAULT_LLVM_VERSION: '18.1.8'
+  DEFAULT_LLVM_VERSION: '17.0.6'
 
 on:
   workflow_dispatch:
     inputs:
       llvm_version:
-        description: "e.g. 15.0.7, 21.1.1, etc"
+        description: "e.g. 15.0.7, 17.0.6, 18.1.8, 21.1.1, etc"
         required: false
   pull_request:
     branches:
@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
+        os: [ubuntu-22.04, macos-15, windows-2025]
     container: ${{ (matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux_2_28_x86_64:latest') || (matrix.os == 'ubuntu-22.04-arm' && 'quay.io/pypa/manylinux_2_28_aarch64:latest') || '' }}  
     defaults:
       run:

From 70330223a2d75f166013019ea361183175c5754e Mon Sep 17 00:00:00 2001
From: Hugh Perkins <hughperkins@gmail.com>
Date: Sun, 21 Sep 2025 19:09:25 -0400
Subject: [PATCH 52/52] build 18.1.8

---
 .github/workflows/llvm-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index b8cceb4..0bc34f3 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -1,7 +1,7 @@
 name: Build LLVM (matrix)
 
 env:
-  DEFAULT_LLVM_VERSION: '17.0.6'
+  DEFAULT_LLVM_VERSION: '18.1.8'
 
 on:
   workflow_dispatch: