[clang] [llvm] Reapply "[sanitizer][NFCI] Add Options parameter to LowerAllowCheckPass" (#122833) (PR #122994)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Thurston Dang (thurstond)

<details>
<summary>Changes</summary>

This reverts commit 1515caf7a59dc20cb932b724b2ef5c1d1a593427 (https://github.com/llvm/llvm-project/pull/122833) i.e., relands 7d8b4eb0ead277f41ff69525ed807f9f6e227f37
(https://github.com/llvm/llvm-project/pull/122765), with the addition of std::move to fix a stack use-after-scope error.

---
Full diff: https://github.com/llvm/llvm-project/pull/122994.diff


4 Files Affected:

- (modified) clang/lib/CodeGen/BackendUtil.cpp (+6-4) 
- (modified) llvm/include/llvm/Transforms/Instrumentation/LowerAllowCheckPass.h (+9) 
- (modified) llvm/lib/Passes/PassBuilder.cpp (+15) 
- (modified) llvm/lib/Passes/PassRegistry.def (+4-1) 


``````````diff
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index 79e6bf3d24dffb..ffe640fd4b9287 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -795,11 +795,13 @@ static void addSanitizers(const Triple &TargetTriple,
   }
 
   if (LowerAllowCheckPass::IsRequested()) {
+    LowerAllowCheckPass::Options Opts;
     // We want to call it after inline, which is about OptimizerEarlyEPCallback.
-    PB.registerOptimizerEarlyEPCallback([](ModulePassManager &MPM,
-                                           OptimizationLevel Level,
-                                           ThinOrFullLTOPhase Phase) {
-      MPM.addPass(createModuleToFunctionPassAdaptor(LowerAllowCheckPass()));
+    PB.registerOptimizerEarlyEPCallback([Opts = std::move(Opts)](ModulePassManager &MPM,
+                                               OptimizationLevel Level,
+                                               ThinOrFullLTOPhase Phase) {
+      MPM.addPass(createModuleToFunctionPassAdaptor(
+          LowerAllowCheckPass(Opts)));
     });
   }
 }
diff --git a/llvm/include/llvm/Transforms/Instrumentation/LowerAllowCheckPass.h b/llvm/include/llvm/Transforms/Instrumentation/LowerAllowCheckPass.h
index af974818fec5f3..3ee907606e12b8 100644
--- a/llvm/include/llvm/Transforms/Instrumentation/LowerAllowCheckPass.h
+++ b/llvm/include/llvm/Transforms/Instrumentation/LowerAllowCheckPass.h
@@ -24,9 +24,18 @@ namespace llvm {
 // from the hot code.
 class LowerAllowCheckPass : public PassInfoMixin<LowerAllowCheckPass> {
 public:
+  struct Options {
+    std::vector<unsigned int> placeholder; // TODO: cutoffs
+  };
+
+  explicit LowerAllowCheckPass(LowerAllowCheckPass::Options Opts)
+      : Opts(std::move(Opts)) {};
   PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
 
   static bool IsRequested();
+
+private:
+  LowerAllowCheckPass::Options Opts;
 };
 
 } // namespace llvm
diff --git a/llvm/lib/Passes/PassBuilder.cpp b/llvm/lib/Passes/PassBuilder.cpp
index 94782547325ed1..1e9f825dc3dc4c 100644
--- a/llvm/lib/Passes/PassBuilder.cpp
+++ b/llvm/lib/Passes/PassBuilder.cpp
@@ -821,6 +821,21 @@ Expected<EmbedBitcodeOptions> parseEmbedBitcodePassOptions(StringRef Params) {
   return Result;
 }
 
+Expected<LowerAllowCheckPass::Options>
+parseLowerAllowCheckPassOptions(StringRef Params) {
+  LowerAllowCheckPass::Options Result;
+  while (!Params.empty()) {
+    StringRef ParamName;
+    std::tie(ParamName, Params) = Params.split(';');
+
+    return make_error<StringError>(
+        formatv("invalid LowerAllowCheck pass parameter '{0}' ", ParamName)
+            .str(),
+        inconvertibleErrorCode());
+  }
+  return Result;
+}
+
 Expected<MemorySanitizerOptions> parseMSanPassOptions(StringRef Params) {
   MemorySanitizerOptions Result;
   while (!Params.empty()) {
diff --git a/llvm/lib/Passes/PassRegistry.def b/llvm/lib/Passes/PassRegistry.def
index a93a995655a147..0eb050c8adb047 100644
--- a/llvm/lib/Passes/PassRegistry.def
+++ b/llvm/lib/Passes/PassRegistry.def
@@ -402,7 +402,6 @@ FUNCTION_PASS("loop-load-elim", LoopLoadEliminationPass())
 FUNCTION_PASS("loop-simplify", LoopSimplifyPass())
 FUNCTION_PASS("loop-sink", LoopSinkPass())
 FUNCTION_PASS("loop-versioning", LoopVersioningPass())
-FUNCTION_PASS("lower-allow-check", LowerAllowCheckPass())
 FUNCTION_PASS("lower-atomic", LowerAtomicPass())
 FUNCTION_PASS("lower-constant-intrinsics", LowerConstantIntrinsicsPass())
 FUNCTION_PASS("lower-expect", LowerExpectIntrinsicPass())
@@ -553,6 +552,10 @@ FUNCTION_PASS_WITH_PARAMS(
     parseLoopVectorizeOptions,
     "no-interleave-forced-only;interleave-forced-only;no-vectorize-forced-only;"
     "vectorize-forced-only")
+FUNCTION_PASS_WITH_PARAMS(
+    "lower-allow-check", "LowerAllowCheckPass",
+    [](LowerAllowCheckPass::Options Opts) { return LowerAllowCheckPass(Opts); },
+    parseLowerAllowCheckPassOptions, "")
 FUNCTION_PASS_WITH_PARAMS(
     "lower-matrix-intrinsics", "LowerMatrixIntrinsicsPass",
     [](bool Minimal) { return LowerMatrixIntrinsicsPass(Minimal); },

``````````

</details>


https://github.com/llvm/llvm-project/pull/122994