1 files changed, 68 insertions, 11 deletions
diff --git a/instrumentation/compare-transform-pass.so.cc b/instrumentation/compare-transform-pass.so.cc
index a1239040..5fd8efb1 100644
--- a/instrumentation/compare-transform-pass.so.cc
+++ b/instrumentation/compare-transform-pass.so.cc
@@ -26,11 +26,17 @@
 
 #include "llvm/ADT/Statistic.h"
 #include "llvm/IR/IRBuilder.h"
+#if LLVM_MAJOR >= 7 /* 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/Module.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/Transforms/IPO/PassManagerBuilder.h"
 #include "llvm/Transforms/Utils/BasicBlockUtils.h"
 #include "llvm/Pass.h"
 #include "llvm/Analysis/ValueTracking.h"
@@ -52,28 +58,28 @@ using namespace llvm;
 
 namespace {
 
+#if LLVM_MAJOR >= 7 /* use new pass manager */
+class CompareTransform : public PassInfoMixin<CompareTransform> {
+
+ public:
+  CompareTransform() {
+#else
 class CompareTransform : public ModulePass {
 
  public:
   static char ID;
   CompareTransform() : ModulePass(ID) {
+#endif
 
     initInstrumentList();
 
   }
 
-  bool runOnModule(Module &M) override;
-
-#if LLVM_VERSION_MAJOR < 4
-  const char *getPassName() const override {
-
+#if LLVM_MAJOR >= 7 /* use new pass manager */
+  PreservedAnalyses run(Module &M, ModuleAnalysisManager &MAM);
 #else
-  StringRef      getPassName() const override {
-
+  bool runOnModule(Module &M) override;
 #endif
-    return "transforms compare functions";
-
-  }
 
  private:
   bool transformCmps(Module &M, const bool processStrcmp,
@@ -85,7 +91,40 @@ class CompareTransform : public ModulePass {
 
 }  // namespace
 
+#if LLVM_MAJOR >= 7 /* use new pass manager */
+extern "C" ::llvm::PassPluginLibraryInfo LLVM_ATTRIBUTE_WEAK
+llvmGetPassPluginInfo() {
+  return {
+    LLVM_PLUGIN_API_VERSION, "comparetransform", "v0.1",
+    /* lambda to insert our pass into the pass pipeline. */
+    [](PassBuilder &PB) {
+#if 1
+       using OptimizationLevel = typename PassBuilder::OptimizationLevel;
+       PB.registerOptimizerLastEPCallback(
+         [](ModulePassManager &MPM, OptimizationLevel OL) {
+           MPM.addPass(CompareTransform());
+         }
+       );
+/* TODO LTO registration */
+#else
+       using PipelineElement = typename PassBuilder::PipelineElement;
+       PB.registerPipelineParsingCallback(
+         [](StringRef Name, ModulePassManager &MPM, ArrayRef<PipelineElement>) {
+            if ( Name == "comparetransform" ) {
+              MPM.addPass(CompareTransform());
+              return true;
+            } else {
+              return false;
+            }
+         }
+       );
+#endif
+    }
+  };
+}
+#else
 char CompareTransform::ID = 0;
+#endif
 
 bool CompareTransform::transformCmps(Module &M, const bool processStrcmp,
                                      const bool processMemcmp,
@@ -592,7 +631,11 @@ bool CompareTransform::transformCmps(Module &M, const bool processStrcmp,
 
 }
 
+#if LLVM_MAJOR >= 7 /* use new pass manager */
+PreservedAnalyses CompareTransform::run(Module &M, ModuleAnalysisManager &MAM) {
+#else
 bool CompareTransform::runOnModule(Module &M) {
+#endif
 
   if ((isatty(2) && getenv("AFL_QUIET") == NULL) || getenv("AFL_DEBUG") != NULL)
     printf(
@@ -601,13 +644,26 @@ bool CompareTransform::runOnModule(Module &M) {
   else
     be_quiet = 1;
 
+#if LLVM_MAJOR >= 7 /* use new pass manager */
+  auto PA = PreservedAnalyses::all();
+#endif
+
   transformCmps(M, true, true, true, true, true);
   verifyModule(M);
 
+#if LLVM_MAJOR >= 7 /* use new pass manager */
+/*  if (modified) {
+    PA.abandon<XX_Manager>();
+  }*/
+
+  return PA;
+#else
   return true;
+#endif
 
 }
 
+#if LLVM_MAJOR < 7 /* use old pass manager */
 static void registerCompTransPass(const PassManagerBuilder &,
                                   legacy::PassManagerBase &PM) {
 
@@ -626,4 +682,5 @@ static RegisterStandardPasses RegisterCompTransPass0(
 static RegisterStandardPasses RegisterCompTransPassLTO(
     PassManagerBuilder::EP_FullLinkTimeOptimizationLast, registerCompTransPass);
 #endif
+#endif