1 files changed, 89 insertions, 2 deletions

diff --git a/instrumentation/afl-llvm-pass.so.cc b/instrumentation/afl-llvm-pass.so.cc
index 5246ba08..32045935 100644
--- a/instrumentation/afl-llvm-pass.so.cc
+++ b/instrumentation/afl-llvm-pass.so.cc
@@ -45,12 +45,21 @@ typedef long double max_align_t;
 #endif
 
 #include "llvm/IR/IRBuilder.h"
-#include "llvm/IR/LegacyPassManager.h"
+#if LLVM_VERSION_MAJOR >= 11                        /* use new pass manager */
+  #include "llvm/Passes/PassPlugin.h"
+  #include "llvm/Passes/PassBuilder.h"
+  #include "llvm/IR/PassManager.h"
+#else
+  #include "llvm/IR/LegacyPassManager.h"
+  #include "llvm/Transforms/IPO/PassManagerBuilder.h"
+#endif
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/MathExtras.h"
-#include "llvm/Transforms/IPO/PassManagerBuilder.h"
+#if LLVM_VERSION_MAJOR >= 14                /* how about stable interfaces? */
+  #include "llvm/Passes/OptimizationLevel.h"
+#endif
 
 #if LLVM_VERSION_MAJOR >= 4 || \
     (LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR > 4)
@@ -68,17 +77,30 @@ using namespace llvm;
 
 namespace {
 
+#if LLVM_VERSION_MAJOR >= 11                        /* use new pass manager */
+class AFLCoverage : public PassInfoMixin<AFLCoverage> {
+
+ public:
+  AFLCoverage() {
+
+#else
 class AFLCoverage : public ModulePass {
 
  public:
   static char ID;
   AFLCoverage() : ModulePass(ID) {
 
+#endif
+
     initInstrumentList();
 
   }
 
+#if LLVM_VERSION_MAJOR >= 11                        /* use new pass manager */
+  PreservedAnalyses run(Module &M, ModuleAnalysisManager &MAM);
+#else
   bool runOnModule(Module &M) override;
+#endif
 
  protected:
   uint32_t    ngram_size = 0;
@@ -92,7 +114,55 @@ class AFLCoverage : public ModulePass {
 
 }  // namespace
 
+#if LLVM_VERSION_MAJOR >= 11                        /* use new pass manager */
+extern "C" ::llvm::PassPluginLibraryInfo LLVM_ATTRIBUTE_WEAK
+llvmGetPassPluginInfo() {
+
+  return {LLVM_PLUGIN_API_VERSION, "AFLCoverage", "v0.1",
+          /* lambda to insert our pass into the pass pipeline. */
+          [](PassBuilder &PB) {
+
+  #if 1
+    #if LLVM_VERSION_MAJOR <= 13
+            using OptimizationLevel = typename PassBuilder::OptimizationLevel;
+    #endif
+            PB.registerOptimizerLastEPCallback(
+                [](ModulePassManager &MPM, OptimizationLevel OL) {
+
+                  MPM.addPass(AFLCoverage());
+
+                });
+
+  /* TODO LTO registration */
+  #else
+            using PipelineElement = typename PassBuilder::PipelineElement;
+            PB.registerPipelineParsingCallback([](StringRef          Name,
+                                                  ModulePassManager &MPM,
+                                                  ArrayRef<PipelineElement>) {
+
+              if (Name == "AFLCoverage") {
+
+                MPM.addPass(AFLCoverage());
+                return true;
+
+              } else {
+
+                return false;
+
+              }
+
+            });
+
+  #endif
+
+          }};
+
+}
+
+#else
+
 char AFLCoverage::ID = 0;
+#endif
 
 /* needed up to 3.9.0 */
 #if LLVM_VERSION_MAJOR == 3 && \
@@ -118,8 +188,15 @@ uint64_t PowerOf2Ceil(unsigned in) {
     (LLVM_VERSION_MAJOR == 4 && LLVM_VERSION_PATCH >= 1)
   #define AFL_HAVE_VECTOR_INTRINSICS 1
 #endif
+
+#if LLVM_VERSION_MAJOR >= 11                        /* use new pass manager */
+PreservedAnalyses AFLCoverage::run(Module &M, ModuleAnalysisManager &MAM) {
+
+#else
 bool AFLCoverage::runOnModule(Module &M) {
 
+#endif
+
   LLVMContext &C = M.getContext();
 
   IntegerType *Int8Ty = IntegerType::getInt8Ty(C);
@@ -133,6 +210,10 @@ bool AFLCoverage::runOnModule(Module &M) {
   u32             rand_seed;
   unsigned int    cur_loc = 0;
 
+#if LLVM_VERSION_MAJOR >= 11                        /* use new pass manager */
+  auto PA = PreservedAnalyses::all();
+#endif
+
   /* Setup random() so we get Actually Random(TM) outputs from AFL_R() */
   gettimeofday(&tv, &tz);
   rand_seed = tv.tv_sec ^ tv.tv_usec ^ getpid();
@@ -997,10 +1078,15 @@ bool AFLCoverage::runOnModule(Module &M) {
 
   }
 
+#if LLVM_VERSION_MAJOR >= 11                        /* use new pass manager */
+  return PA;
+#else
   return true;
+#endif
 
 }
 
+#if LLVM_VERSION_MAJOR < 11                         /* use old pass manager */
 static void registerAFLPass(const PassManagerBuilder &,
                             legacy::PassManagerBase &PM) {
 
@@ -1013,4 +1099,5 @@ static RegisterStandardPasses RegisterAFLPass(
 
 static RegisterStandardPasses RegisterAFLPass0(
     PassManagerBuilder::EP_EnabledOnOptLevel0, registerAFLPass);
+#endif