[Test] Add cpp linter workflow

.clang-tidy

@@ -0,0 +1,26 @@
+Checks: '-*,llvm-*,misc-*,-misc-const-correctness,-misc-unused-parameters,-misc-non-private-member-variables-in-classes,-misc-no-recursion,-misc-use-anonymous-namespace,readability-identifier-naming,-misc-include-cleaner,-llvm-header-guard'
+CheckOptions:
+  - key:             readability-identifier-naming.ClassCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.EnumCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.FunctionCase
+    value:           camelBack
+  # Exclude from scanning as this is an exported symbol used for fuzzing
+  # throughout the code base.
+  - key:             readability-identifier-naming.FunctionIgnoredRegexp
+    value:           "LLVMFuzzerTestOneInput"
+  - key:             readability-identifier-naming.MemberCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.ParameterCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.UnionCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.VariableCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.IgnoreMainLikeFunctions
+    value:           1
+  - key:             readability-redundant-member-init.IgnoreBaseInCopyConstructors
+    value:           1
+  - key:             modernize-use-default-member-init.UseAssignment
+    value:           1

.github/workflows/cpp-linter.yml

@@ -0,0 +1,34 @@
+name: cpp-linter
+
+on:
+  pull_request:
+    #paths:
+    #  - "common/*"
+    #  - "pass/*"
+    #  - "lib/*"
+
+jobs:
+  cpp-linter:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cpp-linter/cpp-linter-action@v2
+        id: linter
+        continue-on-error: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          version: 18
+          ignore: .github | tests | scripts
+          style: file
+          tidy-checks: ''
+          lines-changed-only: true
+          format-review: true
+          tidy-review: true
+
+      - name: Fail fast?!
+        if: steps.linter.outputs.checks-failed != 0
+        run: exit 1

lib/JitEngine.cpp

@@ -13,7 +13,7 @@
 #include <optional>
 #include <string>
 
 #include "llvm/CodeGen/CommandFlags.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
@@ -135,6 +135,9 @@
 void JitEngine::optimizeIR(Module &M, StringRef Arch) {
   TIMESCOPE("Optimize IR");
   runOptimizationPassPipeline(M, Arch);
+
+  for (int i = 0; i < 10; i++)
+    printf("Senseless code\n");
 }
 
 } // namespace proteus

pass/ProteusPass.cpp

@@ -25,7 +25,7 @@
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/CallGraph.h"
 #include "llvm/Bitcode/BitcodeWriter.h"
 #include "llvm/IR/DebugInfo.h"
 #include "llvm/IR/Mangler.h"
@@ -120,6 +120,9 @@
   bool run(Module &M, bool IsLTO) {
     parseAnnotations(M);
 
+    for (int I = 0; I < 10; ++I)
+      printf("Senseless code\n");
+
     DEBUG(Logger::logs("proteus-pass")
           << "=== Pre Original Host Module\n"
           << M << "=== End of Pre Original Host Module\n");