[CI][Lint] Retire `format.sh` and add `clang-tidy` to GHA workflow (#1044)

* [Lint] Retire `format.sh` and add `clang-tidy` to GHA workflow

* chore: update clang-tidy settings

* chore: upgrade clang-format and clang-tidy version

* lint: resolve clang-tidy errors

* [Maint] restore format.sh

* [CI] pre-commit autoupdate

* [Minor] fix `command -v` usage

.clang-tidy

-Checks: >
+---
+InheritParentConfig: true
+ExtraArgs: ['-v']
+FormatStyle: file
+UseColor: true
+WarningsAsErrors: '*'
+ExcludeHeaderFilterRegex: '^(3rdparty|tvm)/.*$'
+
+# NOTE: there must be no spaces before the '-', so put the comma last.
+Checks: >-
   # 1. Retained categories: easier to find bugs/performance issues
   clang-analyzer-*,
   cppcoreguidelines-pro-type-static-cast-downcast,
@@ -47,7 +56,3 @@ Checks: >
   -clang-analyzer-deadcode.DeadStores,
   -clang-analyzer-optin.cplusplus.VirtualCall,
   -clang-diagnostic-tautological-constant-compare,
-
-WarningsAsErrors: '*'
-
-HeaderFilterRegex: '^(?!.*(3rdparty|build)).*$'
\ No newline at end of file

.github/workflows/ci.yml

@@ -287,21 +287,39 @@ jobs:
           echo "Clearing uv cache at ${UV_CACHE_DIR} due to failure."
           uv cache clean
 
-      - name: Run format check
-        id: format-check
+      - name: Run clang-tidy
+        id: clang-tidy
+        if: runner.os == 'Linux'
         run: |
-          mkdir -p build
+          echo "\$ $(command -v clang-tidy) --version" && clang-tidy --version
+
+          if [[ -x "$(command -v run-clang-tidy)" ]]; then
+            echo "Using run-clang-tidy from $(command -v run-clang-tidy)"
+            CLANG_TIDY=(run-clang-tidy)
+          else
+            echo "Downloading run-clang-tidy script"
+            wget -O run-clang-tidy.py https://raw.githubusercontent.com/llvm/llvm-project/refs/heads/release/21.x/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
+            CLANG_TIDY=(uv run --no-project --script -- run-clang-tidy.py)
+          fi
+          if [[ -x "$(command -v clang-apply-replacements)" ]]; then
+            echo "Using clang-apply-replacements from $(command -v clang-apply-replacements)"
+            CLANG_TIDY+=(-fix -clang-apply-replacements-binary="$(command -v clang-apply-replacements)")
+          else
+            echo "::warning::clang-apply-replacements not found in PATH, automatic fixing disabled."
+          fi
+
           # Run cmake to create the build directory with compile_commands.json
-          (
-            cd build
-            cmake .. ${CLANG_TIDY_CMAKE_OPTIONS}  # no quotes here
-          )
+          cmake -S . -B cmake-build --fresh ${CLANG_TIDY_CMAKE_OPTIONS}  # no quotes here
+
+          CXX_FILES=$(find src -type f -iname "*.[ch]pp" -o -iname "*.cc" -o -iname "*.c" -o -iname "*.h")
           rc=0
-          bash format.sh || rc="$?"
-          rm -rf build
-          if [[ "${rc}" -ne 0 ]]; then
-            echo "::error::Format check failed. Please run 'bash format.sh' locally to fix the issues."
-            exit 1
+          "${CLANG_TIDY[@]}" -clang-tidy-binary="$(command -v clang-tidy)" \
+            -p="cmake-build" ${CXX_FILES} || rc="$?"
+          rm -rf cmake-build run-clang-tidy.py
+          if (( rc != 0 )); then
+            echo "::error::clang-tidy found issues (exit code: ${rc}). Please run 'clang-tidy --fix' locally to fix them."
+            git diff --color=always || true
+            exit "${rc}"
           fi
 
       - name: Enable core dump generation (Linux / GitHub-hosted runners)

.gitignore

@@ -97,3 +97,7 @@ tilelang/jit/adapter/cython/.cycache
 
 # claude
 **/.claude
+
+# CMake
+cmake-build/
+cmake-build-*/

.pre-commit-config.yaml

@@ -32,7 +32,7 @@ repos:
         args: [--ignore-case]
         files: ^docs/spelling_wordlist\.txt$
   - repo: https://github.com/pre-commit/mirrors-clang-format
-    rev: v15.0.7  # sync with requirements-lint.txt
+    rev: v21.1.2  # sync with requirements-lint.txt
     hooks:
       - id: clang-format
         exclude: |
@@ -41,7 +41,7 @@ repos:
             ^.+\.json$
           )
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.14.0  # sync with requirements-lint.txt
+    rev: v0.14.1  # sync with requirements-lint.txt
     hooks:
       - id: ruff-check
         args: [--fix, --exit-non-zero-on-fix]

format.sh

 #!/usr/bin/env bash
 # Usage:
 #    # Do work and commit your work.
-
+#
 #    # Format files that differ from origin/main.
 #    bash format.sh
-
-#    # Commit changed files with message 'Run yapf and ruff'
+#
+#    # Format all files.
+#    bash format.sh --all
 #
 #
 # YAPF + Clang formatter (if installed). This script formats all changed files from the last mergebase.
@@ -14,303 +15,149 @@
 # Cause the script to exit if a single command fails
 set -eo pipefail
 
+if [[ -z "${BASH_VERSION}" ]]; then
+    echo "Please run this script using bash." >&2
+    exit 1
+fi
+
 # this stops git rev-parse from failing if we run this from the .git directory
 builtin cd "$(dirname "${BASH_SOURCE:-$0}")"
 ROOT="$(git rev-parse --show-toplevel)"
 builtin cd "$ROOT" || exit 1
 
-# If yapf/ruff/codespell is not installed, install according to the requirements
-if ! (yapf --version &>/dev/null && ruff --version &>/dev/null && codespell --version &>/dev/null); then
-    pip install -r requirements-lint.txt
-fi
-
-YAPF_VERSION=$(yapf --version | awk '{print $2}')
-RUFF_VERSION=$(ruff --version | awk '{print $2}')
-CODESPELL_VERSION=$(codespell --version)
-
-# # params: tool name, tool version, required version
-tool_version_check() {
-    if [[ $2 != $3 ]]; then
-        echo "Wrong $1 version installed: $3 is required, not $2."
-        pip install -r requirements-lint.txt
+ALL_FILES=''
+ONLY_CHANGED=''
+FILES=()
+if (($# == 0)); then
+    if [[ -n "$(git status --porcelain)" ]]; then
+        echo 'Detected uncommitted changes. Please commit or stash them before running format.sh.' >&2
+        exit 1
     fi
-}
-
-tool_version_check "yapf" $YAPF_VERSION "$(grep yapf requirements-lint.txt | cut -d'=' -f3)"
-tool_version_check "ruff" $RUFF_VERSION "$(grep "ruff==" requirements-lint.txt | cut -d'=' -f3)"
-tool_version_check "codespell" "$CODESPELL_VERSION" "$(grep codespell requirements-lint.txt | cut -d'=' -f3)"
-
-echo 'tile-lang yapf: Check Start'
-
-YAPF_FLAGS=(
-    '--recursive'
-    '--parallel'
-)
-
-YAPF_EXCLUDES=(
-    '--exclude' 'build/**'
-    '--exclude' '3rdparty/**'
-)
-
-# Format specified files
-format() {
-    yapf --in-place "${YAPF_FLAGS[@]}" "$@"
-}
+    ONLY_CHANGED='true'
+else
+    while (($# > 0)); do
+        case $1 in
+        --files)
+            shift
+            while (($# > 0)); do
+                FILES+=("$1")
+                shift
+            done
+            ;;
+        --all)
+            ALL_FILES='true'
+            shift
+            ;;
+        *)
+            echo "Unknown argument: '$1'" >&2
+            exit 1
+            ;;
+        esac
+    done
+fi
 
-# Format files that differ from main branch. Ignores dirs that are not slated
-# for autoformat yet.
-format_changed() {
-    # The `if` guard ensures that the list of filenames is not empty, which
-    # could cause yapf to receive 0 positional arguments, making it hang
-    # waiting for STDIN.
-    #
-    # `diff-filter=ACM` and $MERGEBASE is to ensure we only format files that
-    # exist on both branches.
+MERGE_BASE=""
+get_merge_base() {
     UPSTREAM_REPO="https://github.com/tile-ai/tilelang"
-    
-    if git ls-remote --exit-code "$UPSTREAM_REPO" main &>/dev/null; then
+    if git ls-remote --exit-code "${UPSTREAM_REPO}" main &>/dev/null; then
         # First try to use the upstream repository directly
-        MERGEBASE="$(git fetch "$UPSTREAM_REPO" main &>/dev/null && git merge-base FETCH_HEAD HEAD)"
+        MERGE_BASE="$(git fetch "${UPSTREAM_REPO}" main &>/dev/null && git merge-base FETCH_HEAD HEAD)"
     elif git show-ref --verify --quiet refs/remotes/origin/main; then
         # Fall back to origin/main if available
         BASE_BRANCH="origin/main"
-        MERGEBASE="$(git merge-base $BASE_BRANCH HEAD)"
+        MERGE_BASE="$(git merge-base "${BASE_BRANCH}" HEAD)"
     else
         # Last resort, use local main
         BASE_BRANCH="main"
-        MERGEBASE="$(git merge-base $BASE_BRANCH HEAD)"
-    fi
-
-    if ! git diff --diff-filter=ACM --quiet --exit-code "$MERGEBASE" -- '*.py' '*.pyi' &>/dev/null; then
-        git diff --name-only --diff-filter=ACM "$MERGEBASE" -- '*.py' '*.pyi' | xargs -P 5 \
-             yapf --in-place "${YAPF_EXCLUDES[@]}" "${YAPF_FLAGS[@]}"
+        MERGE_BASE="$(git merge-base "${BASE_BRANCH}" HEAD)"
     fi
+    echo "${MERGE_BASE}"
 }
 
-# Format all files
-format_all() {
-    yapf --in-place "${YAPF_FLAGS[@]}" "${YAPF_EXCLUDES[@]}" .
-}
-
-## This flag formats individual files. --files *must* be the first command line
-## arg to use this option.
-if [[ "$1" == '--files' ]]; then
-   format "${@:2}"
-   # If `--all` is passed, then any further arguments are ignored and the
-   # entire python directory is formatted.
-elif [[ "$1" == '--all' ]]; then
-   format_all
-else
-   # Format only the files that changed in last commit.
-   format_changed
+if [[ -n "${ALL_FILES}" ]]; then
+    echo "Checking all files..." >&2
+elif [[ -n "${ONLY_CHANGED}" ]]; then
+    MERGE_BASE="$(get_merge_base)"
+    echo "Checking changed files compared to merge base (${MERGE_BASE})..." >&2
+elif [[ "${#FILES[@]}" -gt 0 ]]; then
+    echo "Checking specified files: ${FILES[*]}..." >&2
 fi
-echo 'tile-lang yapf: Done'
-
-echo 'tile-lang codespell: Check Start'
-# check spelling of specified files
-spell_check() {
-    codespell "$@"
-}
-
-spell_check_all(){
-  codespell --toml pyproject.toml
-}
-
-# Spelling  check of files that differ from main branch.
-spell_check_changed() {
-    # The `if` guard ensures that the list of filenames is not empty, which
-    # could cause ruff to receive 0 positional arguments, making it hang
-    # waiting for STDIN.
-    #
-    # `diff-filter=ACM` and $MERGEBASE is to ensure we only lint files that
-    # exist on both branches.
-    if git show-ref --verify --quiet refs/remotes/origin/main; then
-        BASE_BRANCH="origin/main"
-    else
-        BASE_BRANCH="main"
-    fi
-
-    MERGEBASE="$(git merge-base $BASE_BRANCH HEAD)"
-
-    if ! git diff --diff-filter=ACM --quiet --exit-code "$MERGEBASE" -- '*.py' '*.pyi' &>/dev/null; then
-        git diff --name-only --diff-filter=ACM "$MERGEBASE" -- '*.py' '*.pyi' | xargs \
-             codespell
-    fi
-}
 
-# Run Codespell
-## This flag runs spell check of individual files. --files *must* be the first command line
-## arg to use this option.
-if [[ "$1" == '--files' ]]; then
-   spell_check "${@:2}"
-   # If `--all` is passed, then any further arguments are ignored and the
-   # entire python directory is linted.
-elif [[ "$1" == '--all' ]]; then
-   spell_check_all
-else
-   # Check spelling only of the files that changed in last commit.
-   spell_check_changed
+# If pre-commit is not installed, install it.
+if ! python3 -m pre_commit --version &>/dev/null; then
+    python3 -m pip install pre-commit
 fi
-echo 'tile-lang codespell: Done'
-
-echo 'tile-lang ruff: Check Start'
-# Lint specified files
-lint() {
-    ruff check "$@"
-}
-
-# Lint files that differ from main branch. Ignores dirs that are not slated
-# for autolint yet.
-lint_changed() {
-    # The `if` guard ensures that the list of filenames is not empty, which
-    # could cause ruff to receive 0 positional arguments, making it hang
-    # waiting for STDIN.
-    #
-    # `diff-filter=ACM` and $MERGEBASE is to ensure we only lint files that
-    # exist on both branches.
-    if git show-ref --verify --quiet refs/remotes/origin/main; then
-        BASE_BRANCH="origin/main"
-    else
-        BASE_BRANCH="main"
-    fi
-
-    MERGEBASE="$(git merge-base $BASE_BRANCH HEAD)"
 
-    if ! git diff --diff-filter=ACM --quiet --exit-code "$MERGEBASE" -- '*.py' '*.pyi' &>/dev/null; then
-        git diff --name-only --diff-filter=ACM "$MERGEBASE" -- '*.py' '*.pyi' | xargs \
-             ruff check
-    fi
-
-}
-
-# Run Ruff
-### This flag lints individual files. --files *must* be the first command line
-### arg to use this option.
-if [[ "$1" == '--files' ]]; then
-   lint "${@:2}"
-   # If `--all` is passed, then any further arguments are ignored and the
-   # entire python directory is linted.
-elif [[ "$1" == '--all' ]]; then
-   lint python testing
-else
-   # Format only the files that changed in last commit.
-   lint_changed
+if [[ ! -f "${ROOT}/.git/hooks/pre-commit" ]]; then
+    echo "Installing and initializing pre-commit hooks..."
+    python3 -m pre_commit install --install-hooks
 fi
 
-echo 'tile-lang ruff: Done'
-
-echo 'tile-lang clang-format: Check Start'
-# If clang-format is available, run it; otherwise, skip
-if command -v clang-format &>/dev/null; then
-    CLANG_FORMAT_VERSION=$(clang-format --version | awk '{print $3}')
-    tool_version_check "clang-format" "$CLANG_FORMAT_VERSION" "$(grep clang-format requirements-lint.txt | cut -d'=' -f3)"
-
-    CLANG_FORMAT_FLAGS=("-i")
-
-    # Apply clang-format to specified files
-    clang_format() {
-        clang-format "${CLANG_FORMAT_FLAGS[@]}" "$@"
-    }
-
-    # Format all C/C++ files in the repo, excluding specified directories
-    clang_format_all() {
-        find . -type f \( -name '*.c' -o -name '*.cc' -o -name '*.cpp' -o -name '*.h' -o -name '*.hpp' \) \
-            -not -path "./3rdparty/*" \
-            -not -path "./build/*" \
-            -exec clang-format -i {} +
-    }
+echo 'tile-lang pre-commit: Check Start'
 
-    # Format changed C/C++ files relative to main
-    clang_format_changed() {
-        if git show-ref --verify --quiet refs/remotes/origin/main; then
-            BASE_BRANCH="origin/main"
-        else
-            BASE_BRANCH="main"
-        fi
-
-        MERGEBASE="$(git merge-base $BASE_BRANCH HEAD)"
-
-        if ! git diff --diff-filter=ACM --quiet --exit-code "$MERGEBASE" -- '*.c' '*.cc' '*.cpp' '*.h' '*.hpp' &>/dev/null; then
-            git diff --name-only --diff-filter=ACM "$MERGEBASE" -- '*.c' '*.cc' '*.cpp' '*.h' '*.hpp' | xargs clang-format -i
-        fi
-    }
-
-    if [[ "$1" == '--files' ]]; then
-       # If --files is given, format only the provided files
-       clang_format "${@:2}"
-    elif [[ "$1" == '--all' ]]; then
-       # If --all is given, format all eligible C/C++ files
-       clang_format_all
-    else
-       # Otherwise, format only changed C/C++ files
-       clang_format_changed
-    fi
-else
-    echo "clang-format not found. Skipping C/C++ formatting."
+if [[ -n "${ALL_FILES}" ]]; then
+    python3 -m pre_commit run --all-files
+elif [[ -n "${ONLY_CHANGED}" ]]; then
+    python3 -m pre_commit run --from-ref "${MERGE_BASE}" --to-ref HEAD
+elif [[ "${#FILES[@]}" -gt 0 ]]; then
+    python3 -m pre_commit run --files "${FILES[@]}"
 fi
-echo 'tile-lang clang-format: Done'
+
+echo 'tile-lang pre-commit: Done'
 
 echo 'tile-lang clang-tidy: Check Start'
 # If clang-tidy is available, run it; otherwise, skip
-if command -v run-clang-tidy &>/dev/null; then
+if [[ -x "$(command -v run-clang-tidy)" ]]; then
     # Check if clang-tidy is available
-    if ! command -v clang-tidy &>/dev/null; then
-        echo "clang-tidy not found. Skipping clang-tidy checks."
-    else
-        # Get clang-tidy version
-        CLANG_TIDY_VERSION=$(clang-tidy --version | head -n1 | awk '{print $4}')
-        echo "Using clang-tidy version: $CLANG_TIDY_VERSION"
-
-        # Check if build directory exists
-        if [ ! -d "build" ]; then
-            echo "Build directory not found. Skipping clang-tidy checks."
-        else
-            # Run clang-tidy on specified files
-            clang_tidy_files() {
-                run-clang-tidy -j 64 "$@" -p build
-            }
-
-            # Run clang-tidy on all C/C++ source files
-            clang_tidy_all() {
-                run-clang-tidy -j 64 src/*.cc -p build
-            }
-
-            # Run clang-tidy on changed C/C++ files relative to main
-            clang_tidy_changed() {
-                if git show-ref --verify --quiet refs/remotes/origin/main; then
-                    BASE_BRANCH="origin/main"
-                else
-                    BASE_BRANCH="main"
-                fi
-
-                MERGEBASE="$(git merge-base $BASE_BRANCH HEAD)"
-
-                # Get changed C/C++ files
-                CHANGED_FILES=$(git diff --name-only --diff-filter=ACM "$MERGEBASE" -- '*.c' '*.cc' '*.cpp' '*.h' '*.hpp' 2>/dev/null || true)
-                
-                if [ -n "$CHANGED_FILES" ]; then
-                    echo "Running clang-tidy on changed files:"
-                    echo "$CHANGED_FILES"
-                    # Convert newline-separated files to space-separated and run clang-tidy once
-                    CHANGED_FILES_SPACE=$(echo "$CHANGED_FILES" | tr '\n' ' ')
-                    run-clang-tidy -j 64 $CHANGED_FILES_SPACE -p build -fix
-                else
-                    echo "No C/C++ files changed. Skipping clang-tidy."
-                fi
-            }
+    if [[ ! -x "$(command -v clang-tidy)" ]]; then
+        python3 -m pip install --upgrade --requirements "${ROOT}/requirements-lint.txt"
+    fi
+    # Get clang-tidy version
+    CLANG_TIDY_VERSION="$(clang-tidy --version | head -n1 | awk '{print $4}')"
+    echo "Using clang-tidy version: ${CLANG_TIDY_VERSION}"
 
-            if [[ "$1" == '--files' ]]; then
-               # If --files is given, run clang-tidy only on the provided files
-               clang_tidy_files "${@:2}"
-            elif [[ "$1" == '--all' ]]; then
-               # If --all is given, run clang-tidy on all source files
-               clang_tidy_all
+    # Check if build directory exists
+    if [[ ! -d "${ROOT}/build" ]]; then
+        echo "Build directory not found. Skipping clang-tidy checks."
+    else
+        # Run clang-tidy on specified files
+        clang_tidy_files() {
+            run-clang-tidy -j 64 "$@" -p build
+        }
+
+        # Run clang-tidy on all C/C++ source files
+        clang_tidy_all() {
+            run-clang-tidy -j 64 src/*.cc -p build
+        }
+
+        # Run clang-tidy on changed C/C++ files relative to main
+        clang_tidy_changed() {
+            # Get changed C/C++ files
+            CHANGED_FILES="$(git diff --name-only --diff-filter=ACM "${MERGE_BASE}" -- '*.c' '*.cc' '*.cpp' '*.h' '*.hpp' 2>/dev/null || true)"
+
+            if [[ -n "${CHANGED_FILES}" ]]; then
+                echo "Running clang-tidy on changed files:"
+                echo "${CHANGED_FILES}"
+                # Convert newline-separated files to space-separated and run clang-tidy once
+                CHANGED_FILES_SPACE="$(echo "${CHANGED_FILES}" | tr '\n' ' ')"
+                run-clang-tidy -j 64 ${CHANGED_FILES_SPACE} -p build -fix
             else
-               # Otherwise, run clang-tidy only on changed C/C++ files
-               clang_tidy_changed
+                echo "No C/C++ files changed. Skipping clang-tidy."
             fi
+        }
+
+        if [[ -n "${ALL_FILES}" ]]; then
+            # If --all is given, run clang-tidy on all source files
+            clang_tidy_all
+        elif [[ -n "${ONLY_CHANGED}" ]]; then
+            # Otherwise, run clang-tidy only on changed C/C++ files
+            clang_tidy_changed
+        elif [[ "${#FILES[@]}" -gt 0 ]]; then
+            # If --files is given, run clang-tidy only on the provided files
+            clang_tidy_files "${FILES[@]}"
         fi
     fi
+
 else
     echo "run-clang-tidy not found. Skipping clang-tidy checks."
     echo "To install clang-tidy tools, you may need to install clang-tidy and run-clang-tidy."

requirements-lint.txt

 # Format and lint requirements
 pre-commit
-clang-format==15.0.7
-clang-tidy==18.1.8
+clang-format==21.1.2
+clang-tidy==21.1.1
 codespell[toml]==2.4.1
-ruff==0.14.0
+ruff==0.14.1
 yapf==0.43.0

src/layout/utils.cc

@@ -136,7 +136,7 @@ Array<IterSplitExpr> DivideUnusedIterators(const Array<PrimExpr> &exprs,
   for (const IterVar &iter : input_iters) {
     IterMark iv_mark;
     for (const IterMark &mark : collector.visited_) {
-      if (mark->source.as<Var>()->same_as(iter->var)) {
+      if (mark->source.as<Var>()->same_as(iter->var)) { // NOLINT(*)
         iv_mark = mark;
         break;
       }

src/op/gemm.cc

@@ -27,9 +27,7 @@ static inline std::pair<bool, TCGEN5MMAMeta>
 GetTCGEN5MMAMeta(int M, int N, int K, DataType ab_dtype, DataType c_dtype) {
 // TODO (lei) Currently not all shapes / dtypes are supported for TCGEN5MMA.
 #define FAIL                                                                   \
-  return {                                                                     \
-    false, TCGEN5MMAMeta { 0, 0, 0 }                                           \
-  }
+  return { false, TCGEN5MMAMeta{0, 0, 0} }
 #define SUCCESS(atom_m, atom_n, atom_k)                                        \
   return {                                                                     \
     true, TCGEN5MMAMeta { atom_m, atom_n, atom_k }                             \

src/op/parallel.h

@@ -42,7 +42,7 @@ class ParallelOpNode;
 
 class ParallelLoopNestVisitor : public StmtExprVisitor {
 private:
-  ParallelLoopNestVisitor(ParallelOpNode *op) : p(op){};
+  ParallelLoopNestVisitor(ParallelOpNode *op) : p(op) {};
   void VisitStmt_(const ForNode *op) override;
   void VisitStmt_(const BufferStoreNode *op) override;
   void VisitExpr_(const BufferLoadNode *op) override;

src/runtime/runtime.cc

@@ -20,7 +20,7 @@ template <typename T> static std::string ArrayToStr(const T *ptr, size_t n) {
   for (size_t i = 0; i < n; i++) {
     if (i > 0)
       ss << ", ";
-    ss << ptr[i];
+    ss << ptr[i]; // NOLINT(clang-analyzer-security.ArrayBound)
   }
   ss << "]";
   return ss.str();

src/target/codegen_cuda.cc

@@ -1749,8 +1749,8 @@ void CodeGenTileLangCUDA::VisitExpr_(const CallNode *op, std::ostream &os) {
       os << "}\n";
     } else {
       os << "for (int local_id = 0; local_id < 8; ++local_id) {\n";
-      os << dst << "[" + this->PrintExpr(dst_ind) + "]"
-         << " = " << src << "[" << src_offset << " + local_id];\n";
+      os << dst << "[" + this->PrintExpr(dst_ind) + "]" << " = " << src << "["
+         << src_offset << " + local_id];\n";
       os << "}\n";
     }
 

src/target/codegen_webgpu.cc

@@ -218,7 +218,7 @@ CodeGenTileLangWebGPU::AddFunction(const PrimFunc &f, bool skip_readonly_decl) {
   this->decl_stream << "\nstruct " << type_pod_args << " {\n";
 
   for (size_t i = 0; i < pod_args.size(); ++i) {
-    Var v = pod_args[i];
+    const Var &v = pod_args[i];
     ICHECK(!v.dtype().is_handle());
     std::string vid = AllocVarID(v.get());
 

src/target/cuda.h

@@ -5023,12 +5023,12 @@ typedef struct CUgraphNodeParams_st {
 /**
  * Device that represents the CPU
  */
-#define CU_DEVICE_CPU ((CUdevice)-1)
+#define CU_DEVICE_CPU ((CUdevice) - 1)
 /**
  * Device that represents an invalid device
  */
-#define CU_DEVICE_INVALID ((CUdevice)-2)
+#define CU_DEVICE_INVALID ((CUdevice) - 2)
 /**
  * Bitmasks for ::CU_DEVICE_ATTRIBUTE_GPU_DIRECT_RDMA_FLUSH_WRITES_OPTIONS

src/tl_templates/cpp/half.hpp

@@ -1192,8 +1192,8 @@ unsigned int float2half_impl(T value, ...) {
 template <std::float_round_style R, typename T>
 unsigned int float2half(T value) {
   return float2half_impl<R>(
-      value, bool_type < std::numeric_limits<T>::is_iec559 &&
-                 sizeof(typename bits<T>::type) == sizeof(T) > ());
+      value, bool_type<std::numeric_limits<T>::is_iec559 &&
+                       sizeof(typename bits<T>::type) == sizeof(T)>());
 }
 
 /// Convert integer to half-precision floating-point.
@@ -1665,9 +1665,10 @@ template <typename T> T half2float_impl(unsigned int value, T, ...) {
 /// \param value half-precision value to convert
 /// \return floating-point value
 template <typename T> T half2float(unsigned int value) {
-  return half2float_impl(value, T(),
-                         bool_type < std::numeric_limits<T>::is_iec559 &&
-                             sizeof(typename bits<T>::type) == sizeof(T) > ());
+  return half2float_impl(
+      value, T(),
+      bool_type<std::numeric_limits<T>::is_iec559 &&
+                sizeof(typename bits<T>::type) == sizeof(T)>());
 }
 
 /// Convert half-precision floating-point to integer.

src/tl_templates/cuda/atomic.h

@@ -106,8 +106,8 @@ TL_DEVICE void AtomicAdd(T1 &ref, T2 val,
   using NT1 = typename normalize_atomic_type<T1>::type;
   T1 *address = &ref;
   if constexpr ((std::is_same_v<NT1, half> ||
-                 std::is_same_v<NT1, __nv_bfloat16>)&&memory_order ==
-                int(cuda::memory_order_relaxed)) {
+                 std::is_same_v<NT1, __nv_bfloat16>) &&
+                memory_order == int(cuda::memory_order_relaxed)) {
     atomicAdd(reinterpret_cast<NT1 *>(address), static_cast<NT1>(val));
   } else {
     cuda::atomic_ref<NT1, cuda::thread_scope_device> aref(*address);
@@ -121,8 +121,8 @@ TL_DEVICE T1 AtomicAddRet(T1 &ref, T2 val,
   using NT1 = typename normalize_atomic_type<T1>::type;
   T1 *address = &ref;
   if constexpr ((std::is_same_v<NT1, half> ||
-                 std::is_same_v<NT1, __nv_bfloat16>)&&memory_order ==
-                int(cuda::memory_order_relaxed)) {
+                 std::is_same_v<NT1, __nv_bfloat16>) &&
+                memory_order == int(cuda::memory_order_relaxed)) {
     return static_cast<T1>(
         atomicAdd(reinterpret_cast<NT1 *>(address), static_cast<NT1>(val)));
   } else {

src/tl_templates/cuda/common.h

@@ -244,8 +244,8 @@ union GmmaDescriptor {
     uint16_t stride_byte_offset_ : 14, : 2; // 14 bits [0,14), 2 bits unused
     // base_offset, bit [49,52)
     // Valid only for SWIZZLE_128B and SWIZZLE_64B
-    uint8_t : 1,
-        base_offset_ : 3, : 4; // 1 bit unused, 3 bits [1,4), 4 bits unused
+    uint8_t : 1, base_offset_ : 3,
+        : 4; // 1 bit unused, 3 bits [1,4), 4 bits unused
     // layout type, bit [62,64)
     // SWIZZLE_NONE = 0, SWIZZLE_32B = 3, SWIZZLE_64B = 2, SWIZZLE_128B = 1
     uint8_t : 6, layout_type_ : 2; // 6 bits unused, 2 bits [6,8)

src/transform/cluster_planning.cc

@@ -86,14 +86,14 @@ private:
 
   class RegionVisitor : public ExprVisitor {
   public:
-    RegionVisitor(){};
+    RegionVisitor() {};
     void VisitExpr_(const VarNode *var) { seen_.insert(var); }
     std::unordered_set<const VarNode *> seen_;
   };
 
   class BlockIdxVisitor : public StmtVisitor {
   public:
-    BlockIdxVisitor(){};
+    BlockIdxVisitor() {};
     void VisitStmt_(const AttrStmtNode *attr) final {
       if (attr->attr_key == attr::thread_extent) {
         IterVar iv = Downcast<IterVar>(attr->node);

src/transform/common/loop_fusion_utils.h

@@ -99,7 +99,7 @@ public:
 
 private:
   ParallelLoopFuser(arith::Analyzer *analyzer)
-      : IRMutatorWithAnalyzer(analyzer){};
+      : IRMutatorWithAnalyzer(analyzer) {};
 
   Stmt VisitStmt_(const ForNode *op) final {
     // Gather consecutive parallel loops

src/transform/layout_inference.cc

@@ -131,13 +131,13 @@ public:
           ICHECK(dst_layout_opt.has_value())
               << "Failed to cast layout to Fragment for buffer " << buffer
               << ", layout type is " << layout->GetTypeKey();
-          auto dst_layout = dst_layout_opt.value();
+          const auto &dst_layout = dst_layout_opt.value();
           auto src_layout_opt = layout_map[buffer].as<Fragment>();
           ICHECK(src_layout_opt.has_value())
               << "Failed to cast layout_map[buffer] to Fragment for buffer "
               << buffer << ", layout type is "
               << layout_map[buffer]->GetTypeKey();
-          auto src_layout = src_layout_opt.value();
+          const auto &src_layout = src_layout_opt.value();
           ICHECK(dst_layout->InputDim() == src_layout->InputDim());
           Array<PrimExpr> indices;
           indices.reserve(dst_layout->InputDim());
@@ -398,7 +398,7 @@ private:
                       << call->args[1]->GetTypeKey();
         return std::nullopt;
       }
-      auto var = var_opt.value();
+      const auto &var = var_opt.value();
       return buffer_data_to_buffer_[var];
     } else if (call->op.same_as(RegionOp::Get())) {
       return call->args[0].as<BufferLoadNode>()->buffer;
@@ -636,7 +636,7 @@ private:
   LayoutInferencer(const LayoutInferenceResult &result,
                    bool skip_thread_partition, arith::Analyzer *analyzer)
       : arith::IRMutatorWithAnalyzer(analyzer), result_(result),
-        skip_thread_partition_(skip_thread_partition){};
+        skip_thread_partition_(skip_thread_partition) {};
 
   using arith::IRMutatorWithAnalyzer::IRMutatorWithAnalyzer;
 

src/transform/layout_reducer.cc

@@ -209,7 +209,7 @@ private:
 
         auto opt_buffer = var_to_buffer_.Get(reducer_var);
         ICHECK(opt_buffer);
-        auto buffer = opt_buffer.value();
+        const auto &buffer = opt_buffer.value();
         Fragment f;
         if (info->rep == ReducerRepType::ALL) {
           f = Fragment(buffer->shape, {}, ReplicationPlaceholder(),