Revert "remove new llvm pass manager :("

This reverts commit 55ed2a443c5c61baba37415d4087164454d8a2a8.

1 files changed, 96 insertions, 8 deletions

diff --git a/instrumentation/compare-transform-pass.so.cc b/instrumentation/compare-transform-pass.so.cc
index c3a4ee34..5869a1db 100644
--- a/instrumentation/compare-transform-pass.so.cc
+++ b/instrumentation/compare-transform-pass.so.cc
@@ -26,14 +26,23 @@
 
 #include "llvm/ADT/Statistic.h"
 #include "llvm/IR/IRBuilder.h"
-#include "llvm/IR/LegacyPassManager.h"
+#if LLVM_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/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"
+#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)
@@ -52,28 +61,37 @@ using namespace llvm;
 
 namespace {
 
+#if LLVM_MAJOR >= 11                                /* 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
   StringRef getPassName() const override {
 
 #else
   const char *getPassName() const override {
-
 #endif
-    return "transforms compare functions";
 
-  }
+#if LLVM_MAJOR >= 11                                /* use new pass manager */
+  PreservedAnalyses run(Module &M, ModuleAnalysisManager &MAM);
+#else
+  bool runOnModule(Module &M) override;
+#endif
 
  private:
   bool transformCmps(Module &M, const bool processStrcmp,
@@ -85,7 +103,54 @@ class CompareTransform : public ModulePass {
 
 }  // namespace
 
+#if LLVM_MAJOR >= 11                                /* 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
+    #if LLVM_VERSION_MAJOR <= 13
+            using OptimizationLevel = typename PassBuilder::OptimizationLevel;
+    #endif
+            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,
@@ -385,6 +450,7 @@ bool CompareTransform::transformCmps(Module &M, const bool processStrcmp,
     bool        isCaseInsensitive = false;
     bool        needs_null = false;
     Function *  Callee = callInst->getCalledFunction();
+
     if (Callee) {
 
       if (!Callee->getName().compare("memcmp") ||
@@ -642,8 +708,14 @@ bool CompareTransform::transformCmps(Module &M, const bool processStrcmp,
 
 }
 
+#if LLVM_MAJOR >= 11                                /* 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(
         "Running compare-transform-pass by laf.intel@gmail.com, extended by "
@@ -651,13 +723,28 @@ bool CompareTransform::runOnModule(Module &M) {
   else
     be_quiet = 1;
 
+#if LLVM_MAJOR >= 11                                /* use new pass manager */
+  auto PA = PreservedAnalyses::all();
+#endif
+
   transformCmps(M, true, true, true, true, true);
   verifyModule(M);
 
+#if LLVM_MAJOR >= 11                                /* use new pass manager */
+                     /*  if (modified) {
+                   
+                         PA.abandon<XX_Manager>();
+                   
+                       }*/
+
+  return PA;
+#else
   return true;
+#endif
 
 }
 
+#if LLVM_MAJOR < 11                                 /* use old pass manager */
 static void registerCompTransPass(const PassManagerBuilder &,
                                   legacy::PassManagerBase &PM) {
 
@@ -672,8 +759,9 @@ static RegisterStandardPasses RegisterCompTransPass(
 static RegisterStandardPasses RegisterCompTransPass0(
     PassManagerBuilder::EP_EnabledOnOptLevel0, registerCompTransPass);
 
-#if LLVM_VERSION_MAJOR >= 11
+  #if LLVM_VERSION_MAJOR >= 11
 static RegisterStandardPasses RegisterCompTransPassLTO(
     PassManagerBuilder::EP_FullLinkTimeOptimizationLast, registerCompTransPass);
+  #endif
 #endif