reviewed neverZero for llvm 9.0

llvm_mode/LLVMInsTrim.so.cc

@@ -292,10 +292,11 @@ namespace {
           Value *Incr = IRB.CreateAdd(Counter, ConstantInt::get(Int8Ty, 1));
 
 #if LLVM_VERSION_MAJOR < 9
-          if (neverZero_counters_str != NULL) { // with llvm 9 we make this the default as the bug in llvm is then fixed
+          if (neverZero_counters_str != NULL) // with llvm 9 we make this the default as the bug in llvm is then fixed
 #else
-  #warning "neverZero implementation needs to be reviewed!"
+          if (1) // with llvm 9 we make this the default as the bug in llvm is then fixed
 #endif
+          {
           /* hexcoder: Realize a counter that skips zero during overflow.
            * Once this counter reaches its maximum value, it next increments to 1
            *
@@ -308,15 +309,13 @@ namespace {
             auto cf = IRB.CreateICmpEQ(Incr, ConstantInt::get(Int8Ty, 0));
             auto carry = IRB.CreateZExt(cf, Int8Ty);
             Incr = IRB.CreateAdd(Incr, carry);
-#if LLVM_VERSION_MAJOR < 9
           }
-#endif
 
           IRB.CreateStore(Incr, MapPtrIdx)->setMetadata(M.getMDKindID("nosanitize"), MDNode::get(C, None));
 
           /* Set prev_loc to cur_loc >> 1 */
           /*
-          StoreInst *Store = IRB.CreateStore(ConstantInt::get(Int32Ty, cur_loc >> 1), AFLPrevLoc);
+          StoreInst *Store = IRB.CreateStore(ConstantInt::get(Int32Ty, L >> 1), OldPrev);
           Store->setMetadata(M.getMDKindID("nosanitize"), MDNode::get(C, None));
           */