diff --git a/enzyme/Enzyme/ActivityAnalysis.cpp b/enzyme/Enzyme/ActivityAnalysis.cpp
index 4e3ffac63bb8..7db1b544198c 100644
--- a/enzyme/Enzyme/ActivityAnalysis.cpp
+++ b/enzyme/Enzyme/ActivityAnalysis.cpp
@@ -1536,6 +1536,7 @@ bool ActivityAnalyzer::isConstantValue(TypeResults const &TR, Value *Val) {
           if (directions & DOWN &&
               (funcName == "malloc" || funcName == "calloc" ||
                funcName == "_Znwm" || funcName == "julia.gc_alloc_obj" ||
+               funcName == "??2@YAPAXI@Z" || funcName == "??2@YAPEAX_K@Z" ||
                funcName == "jl_gc_alloc_typed" ||
                funcName == "ijl_gc_alloc_typed")) {
             std::shared_ptr<ActivityAnalyzer> Hypothesis =
diff --git a/enzyme/Enzyme/AdjointGenerator.h b/enzyme/Enzyme/AdjointGenerator.h
index 998efb80675c..17d55a02e416 100644
--- a/enzyme/Enzyme/AdjointGenerator.h
+++ b/enzyme/Enzyme/AdjointGenerator.h
@@ -8813,7 +8813,9 @@ class AdjointGenerator
                                                      Attribute::NonNull);
 #endif
 
-                  if (funcName == "malloc" || funcName == "_Znwm") {
+                  if (funcName == "malloc" || funcName == "_Znwm" ||
+                      funcName == "??2@YAPAXI@Z" ||
+                      funcName == "??2@YAPEAX_K@Z") {
                     if (auto ci = dyn_cast<ConstantInt>(args[0])) {
                       unsigned derefBytes = ci->getLimitedValue();
                       CallInst *cal =
diff --git a/enzyme/Enzyme/CMakeLists.txt b/enzyme/Enzyme/CMakeLists.txt
index 7260b1b7c5ca..fc5be885ba6d 100644
--- a/enzyme/Enzyme/CMakeLists.txt
+++ b/enzyme/Enzyme/CMakeLists.txt
@@ -98,7 +98,7 @@ if (${Clang_FOUND})
         DEPENDS
         intrinsics_gen
         PLUGIN_TOOL
-        opt
+        clang
     )
 target_compile_definitions(ClangEnzyme-${LLVM_VERSION_MAJOR} PUBLIC ENZYME_RUNPASS)
 endif()
diff --git a/enzyme/Enzyme/GradientUtils.cpp b/enzyme/Enzyme/GradientUtils.cpp
index b2f936cb09d5..aa49ff7f2984 100644
--- a/enzyme/Enzyme/GradientUtils.cpp
+++ b/enzyme/Enzyme/GradientUtils.cpp
@@ -4383,10 +4383,14 @@ Constant *GradientUtils::GetOrCreateShadowConstant(
         NewOps.push_back(i == 0 ? C : arg->getOperand(i));
       return arg->getWithOperands(NewOps);
     }
+  } else if (auto arg = dyn_cast<GlobalAlias>(oval)) {
+    return GetOrCreateShadowConstant(Logic, TLI, TA, arg->getAliasee(), mode,
+                                     width, AtomicAdd);
   } else if (auto arg = dyn_cast<GlobalVariable>(oval)) {
     if (arg->getName() == "_ZTVN10__cxxabiv120__si_class_type_infoE" ||
         arg->getName() == "_ZTVN10__cxxabiv117__class_type_infoE" ||
-        arg->getName() == "_ZTVN10__cxxabiv121__vmi_class_type_infoE")
+        arg->getName() == "_ZTVN10__cxxabiv121__vmi_class_type_infoE" ||
+        arg->getName().startswith("??_R")) // any of the MS RTTI manglings
       return arg;
 
     if (hasMetadata(arg, "enzyme_shadow")) {
@@ -8979,15 +8983,21 @@ llvm::CallInst *freeKnownAllocation(llvm::IRBuilder<> &builder,
     freefunc = LibFunc_ZdaPv;
     break;
 
+  case LibFunc_msvc_new_longlong:         // new(unsigned long long);
+  case LibFunc_msvc_new_longlong_nothrow: // new(unsigned long long, nothrow);
+    freefunc = LibFunc_msvc_delete_ptr64_longlong;
+    break;
+
+  case LibFunc_msvc_new_array_longlong:         // new[](unsigned long long);
+  case LibFunc_msvc_new_array_longlong_nothrow: // new[](unsigned long long,
+                                                // nothrow);
+    freefunc = LibFunc_msvc_delete_array_ptr64_longlong;
+    break;
+
   case LibFunc_msvc_new_int:               // new(unsigned int);
   case LibFunc_msvc_new_int_nothrow:       // new(unsigned int, nothrow);
-  case LibFunc_msvc_new_longlong:          // new(unsigned long long);
-  case LibFunc_msvc_new_longlong_nothrow:  // new(unsigned long long, nothrow);
   case LibFunc_msvc_new_array_int:         // new[](unsigned int);
   case LibFunc_msvc_new_array_int_nothrow: // new[](unsigned int, nothrow);
-  case LibFunc_msvc_new_array_longlong:    // new[](unsigned long long);
-  case LibFunc_msvc_new_array_longlong_nothrow: // new[](unsigned long long,
-                                                // nothrow);
     llvm_unreachable("msvc deletion not handled");
 
   default:
diff --git a/enzyme/test/Integration/ForwardMode/fwdandrev.cpp b/enzyme/test/Integration/ForwardMode/fwdandrev.cpp
index 6218d868ad20..997b08d80a67 100644
--- a/enzyme/test/Integration/ForwardMode/fwdandrev.cpp
+++ b/enzyme/test/Integration/ForwardMode/fwdandrev.cpp
@@ -8,6 +8,7 @@
 // RUN: %clang++ -std=c++14 -fno-exceptions -O3 %s -S -emit-llvm -o - | %opt - %OPloadEnzyme %enzyme -enzyme-inline=1 -S | %lli -
 
 #include <cmath>
+#include "test_utils.h"
 
 template <typename T, int... n>
 struct tensor;
@@ -28,10 +29,6 @@ struct tensor<T, first, rest...> {
   tensor<T, rest...> value[first];
 };
 
-int enzyme_dup;
-int enzyme_out;
-int enzyme_const;
-
 template<typename return_type, typename... Args>
 return_type __enzyme_autodiff(Args...);
 
diff --git a/enzyme/test/Integration/ForwardMode/nofn.cpp b/enzyme/test/Integration/ForwardMode/nofn.cpp
index 293415969451..8092bb5f5446 100644
--- a/enzyme/test/Integration/ForwardMode/nofn.cpp
+++ b/enzyme/test/Integration/ForwardMode/nofn.cpp
@@ -4,10 +4,6 @@
 
 #include <stdio.h>
 
-int enzyme_dup;
-int enzyme_out;
-int enzyme_const;
-
 template < typename return_type, typename ... T >
 extern return_type __enzyme_fwddiff(void*, T ... );
 
diff --git a/enzyme/test/Integration/ForwardMode/rosenbrock.cpp b/enzyme/test/Integration/ForwardMode/rosenbrock.cpp
index fd02a29a67cd..434ae89af89d 100644
--- a/enzyme/test/Integration/ForwardMode/rosenbrock.cpp
+++ b/enzyme/test/Integration/ForwardMode/rosenbrock.cpp
@@ -11,10 +11,6 @@
 #include <cmath>
 #include <vector>
 
-int enzyme_dup;
-int enzyme_out;
-int enzyme_const;
-
 using std::vector;
 
 template <typename T> T rosenbrock2(const vector<T> &control) {
diff --git a/enzyme/test/Integration/ForwardMode/rwrloop.c b/enzyme/test/Integration/ForwardMode/rwrloop.c
index ddf43f9b9498..d1b0a1a10b4b 100644
--- a/enzyme/test/Integration/ForwardMode/rwrloop.c
+++ b/enzyme/test/Integration/ForwardMode/rwrloop.c
@@ -13,7 +13,6 @@
 
 #include "test_utils.h"
 
-int enzyme_const, enzyme_dup;
 double __enzyme_fwddiff(void*, ...);
 
 double alldiv(double* __restrict__ a, int *__restrict__ N) {
diff --git a/enzyme/test/Integration/ForwardMode/test_utils.h b/enzyme/test/Integration/ForwardMode/test_utils.h
index aa95132f7950..afcf87d4471b 100644
--- a/enzyme/test/Integration/ForwardMode/test_utils.h
+++ b/enzyme/test/Integration/ForwardMode/test_utils.h
@@ -3,6 +3,13 @@
 #include <stdbool.h>
 #include <math.h> 
 
+extern
+#ifdef __cplusplus
+"C"
+#endif
+int enzyme_allocated, enzyme_const, enzyme_dup, enzyme_dupnoneed, enzyme_out,
+    enzyme_tape;
+
 /*
 #ifdef __cplusplus
 extern "C" {
diff --git a/enzyme/test/Integration/ReverseMode/MSinput.ll b/enzyme/test/Integration/ReverseMode/MSinput.ll
new file mode 100644
index 000000000000..93b297d21c1d
--- /dev/null
+++ b/enzyme/test/Integration/ReverseMode/MSinput.ll
@@ -0,0 +1,180 @@
+; RUN: if [ %llvmver -ge 15 ]; then %opt < %s %newLoadEnzyme -enzyme -S | FileCheck %s; fi
+
+%rtti.CompleteObjectLocator = type { i32, i32, i32, i32, i32, i32 }
+%rtti.TypeDescriptor13 = type { ptr, ptr, [14 x i8] }
+%rtti.ClassHierarchyDescriptor = type { i32, i32, i32, i32 }
+%rtti.BaseClassDescriptor = type { i32, i32, i32, i32, i32, i32, i32 }
+%rtti.TypeDescriptor12 = type { ptr, ptr, [13 x i8] }
+%struct.Object = type { ptr, double }
+
+$"?eval@Object1@@UEAANN@Z" = comdat any
+
+$"??_7Object1@@6B@" = comdat largest
+
+$"??_R4Object1@@6B@" = comdat any
+
+$"??_R0?AUObject1@@@8" = comdat any
+
+$"??_R3Object1@@8" = comdat any
+
+$"??_R2Object1@@8" = comdat any
+
+$"??_R1A@?0A@EA@Object1@@8" = comdat any
+
+$"??_R1A@?0A@EA@Object@@8" = comdat any
+
+$"??_R0?AUObject@@@8" = comdat any
+
+$"??_R3Object@@8" = comdat any
+
+$"??_R2Object@@8" = comdat any
+
+$"??_7Object@@6B@" = comdat largest
+
+$"??_R4Object@@6B@" = comdat any
+
+@0 = private unnamed_addr constant { [2 x ptr] } { [2 x ptr] [ptr @"??_7Object1@@6B@", ptr @"?eval@Object1@@UEAANN@Z"] }, comdat($"??_7Object1@@6B@")
+@"??_R4Object1@@6B@" = linkonce_odr constant %rtti.CompleteObjectLocator { i32 1, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R0?AUObject1@@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R3Object1@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R4Object1@@6B@" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, comdat
+@"??_7type_info@@6B@" = external constant ptr
+@"??_R0?AUObject1@@@8" = linkonce_odr global %rtti.TypeDescriptor13 { ptr @"??_7type_info@@6B@", ptr null, [14 x i8] c".?AUObject1@@\00" }, comdat
+@__ImageBase = external dso_local constant i8
+@"??_R3Object1@@8" = linkonce_odr constant %rtti.ClassHierarchyDescriptor { i32 0, i32 0, i32 2, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R2Object1@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, comdat
+@"??_R2Object1@@8" = linkonce_odr constant [3 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R1A@?0A@EA@Object1@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R1A@?0A@EA@Object@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 0], comdat
+@"??_R1A@?0A@EA@Object1@@8" = linkonce_odr constant %rtti.BaseClassDescriptor { i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R0?AUObject1@@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 1, i32 0, i32 -1, i32 0, i32 64, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R3Object1@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, comdat
+@"??_R1A@?0A@EA@Object@@8" = linkonce_odr constant %rtti.BaseClassDescriptor { i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R0?AUObject@@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 0, i32 0, i32 -1, i32 0, i32 64, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R3Object@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, comdat
+@"??_R0?AUObject@@@8" = linkonce_odr constant %rtti.TypeDescriptor12 { ptr @"??_7type_info@@6B@", ptr null, [13 x i8] c".?AUObject@@\00" }, comdat
+@"??_R3Object@@8" = linkonce_odr constant %rtti.ClassHierarchyDescriptor { i32 0, i32 0, i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R2Object@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32)}, comdat
+@"??_R2Object@@8" = linkonce_odr constant [2 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R1A@?0A@EA@Object@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 0], comdat
+@1 = private unnamed_addr constant { [2 x ptr] } { [2 x ptr] [ptr @"??_R4Object@@6B@", ptr @_purecall] }, comdat($"??_7Object@@6B@")
+@"??_R4Object@@6B@" = linkonce_odr constant %rtti.CompleteObjectLocator { i32 1, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R0?AUObject@@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R3Object@@8" to i64), i64 ptrtoint( ptr @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R4Object@@6B@" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, comdat
+
+@"??_7Object1@@6B@" = unnamed_addr alias ptr, getelementptr inbounds ({ [2 x ptr] }, ptr @0, i32 0, i32 0, i32 1)
+@"??_7Object@@6B@" = unnamed_addr alias ptr, getelementptr inbounds ({ [2 x ptr] }, ptr @1, i32 0, i32 0, i32 1)
+
+; Function Attrs: mustprogress nounwind uwtable
+define dso_local noundef double @"?new_delete_test@@YANPEAN_K@Z"(ptr nocapture noundef readonly %x, i64 noundef %n) #0 {
+entry:
+  %0 = tail call {i64, i1} @llvm.umul.with.overflow.i64(i64 %n, i64 8)
+  %1 = extractvalue { i64, i1 } %0, 1
+  %2 = extractvalue { i64, i1 } %0, 0
+  %3 = select i1 %1, i64 -1, i64 %2
+  %call = tail call noalias noundef nonnull ptr @"??_U@YAPEAX_K@Z"(i64 noundef %3) #6
+  br label %do.body
+
+do.body:                                          ; preds = %do.body, %entry
+  %indvars.iv = phi i64 [ %indvars.iv.next, %do.body ], [ 0, %entry ]
+  %call1 = tail call noalias noundef nonnull dereferenceable(8) ptr @"??2@YAPEAX_K@Z"(i64 noundef 8) #6
+  %arrayidx = getelementptr inbounds ptr, ptr %call, i64 %indvars.iv
+  store ptr %call1, ptr %arrayidx, align 8, !tbaa !5
+  %arrayidx3 = getelementptr inbounds double, ptr %x, i64 %indvars.iv
+  %4 = load double, ptr %arrayidx3, align 8, !tbaa !9
+  %mul = fmul double %4, %4
+  store double %mul, ptr %arrayidx3, align 8, !tbaa !9
+  %indvars.iv.next = add nuw i64 %indvars.iv, 1
+  %cmp = icmp ult i64 %indvars.iv.next, %n
+  br i1 %cmp, label %do.body, label %do.body8.preheader, !llvm.loop !11
+
+do.body8.preheader:                               ; preds = %do.body
+  %sext = shl i64 %indvars.iv.next, 32
+  %5 = ashr exact i64 %sext, 32
+  br label %do.body8
+
+do.body8:                                         ; preds = %do.body8.preheader, %do.body8
+  %indvars.iv38 = phi i64 [ %5, %do.body8.preheader ], [ %indvars.iv.next39, %do.body8 ]
+  %res.0 = phi double [ 0.000000e+00, %do.body8.preheader ], [ %add, %do.body8 ]
+  %arrayidx10 = getelementptr inbounds ptr, ptr %call, i64 %indvars.iv38
+  %6 = load ptr, ptr %arrayidx10, align 8, !tbaa !5
+  %7 = load double, ptr %6, align 8, !tbaa !9
+  %add = fadd double %res.0, %7
+  tail call void @"??3@YAXPEAX@Z"(ptr noundef %6) #7
+  %indvars.iv.next39 = add i64 %indvars.iv38, 1
+  %cmp16 = icmp ult i64 %indvars.iv.next39, %n
+  br i1 %cmp16, label %do.body8, label %delete.notnull19, !llvm.loop !14
+
+delete.notnull19:
+  tail call void @"??_V@YAXPEAX@Z"(ptr noundef nonnull %call) #7
+  ret double %add
+}
+
+; Function Attrs: mustprogress nocallback nofree nosync nounwind readnone speculatable willreturn
+declare { i64, i1 } @llvm.umul.with.overflow.i64(i64, i64) #1
+
+; Function Attrs: nobuiltin allocsize(0)
+declare dso_local noundef nonnull ptr @"??_U@YAPEAX_K@Z"(i64 noundef) local_unnamed_addr #2
+
+; Function Attrs: nobuiltin allocsize(0)
+declare dso_local noundef nonnull ptr @"??2@YAPEAX_K@Z"(i64 noundef) local_unnamed_addr #2
+
+; Function Attrs: nobuiltin nounwind
+declare dso_local void @"??3@YAXPEAX@Z"(ptr noundef ) local_unnamed_addr #3
+
+; Function Attrs: nobuiltin nounwind
+declare dso_local void @"??_V@YAXPEAX@Z"(ptr noundef ) local_unnamed_addr #3
+
+; Function Attrs: mustprogress nounwind uwtable
+define dso_local void @"?new_delete_test_b@@YEAXPEAN0_K@Z"(ptr noundef %x, ptr noundef %x_b, i64 noundef %n) local_unnamed_addr #0 {
+entry:
+  tail call void @"??$__enzyme_autodiff@XPEANPEAN_K@@YAXPEAXPEAN1_K@Z"(ptr noundef nonnull@"?new_delete_test@@YANPEAN_K@Z", ptr noundef %x, ptr noundef %x_b, i64 noundef %n) #8
+  ret void
+}
+
+declare dso_local void @"??$__enzyme_autodiff@XPEANPEAN_K@@YAXPEAXPEAN1_K@Z"(ptr noundef, ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #4
+
+; Function Attrs: mustprogress nounwind uwtable
+define dso_local noundef double @"?eval@@YANAEAUObject@@N@Z"(ptr noundef nonnull align 8 dereferenceable(16) %o, double noundef %v) local_unnamed_addr #0 {
+entry:
+  %vtable = load ptr, ptr %o, align 8, !tbaa !15
+  %0 = load ptr, ptr %vtable, align 8
+  %call = tail call noundef double %0(ptr noundef nonnull align 8 dereferenceable(16) %o, double noundef %v) #8
+  ret double %call
+}
+
+; Function Attrs: nounwind uwtable
+define dso_local void @"?aliased_rtti_test@@YAXN@Z"(double noundef %v) local_unnamed_addr #5 {
+entry:
+  %call4 = tail call noundef ptr @"??$__enzyme_virtualreverse@PEAX@@YAPEAXPEAX@Z"(ptr noundef nonnull @"??_7Object1@@6B@") #8
+  ret void
+}
+
+declare dso_local noundef ptr @"??$__enzyme_virtualreverse@PEAX@@YAPEAXPEAX@Z"(ptr noundef) local_unnamed_addr #4
+
+; Function Attrs: mustprogress nounwind uwtable
+define linkonce_odr dso_local noundef double @"?eval@Object1@@UEAANN@Z"(ptr noundef nonnull align 8 dereferenceable(16) %this, double noundef %v) unnamed_addr #0 comdat align 2 {
+entry:
+  %val = getelementptr inbounds %struct.Object, ptr %this, i64 0, i32 1
+  %0 = load double, ptr %val, align 8, !tbaa !17
+  %mul = fmul double %0, %v
+  ret double %mul
+}
+
+declare dso_local void @_purecall() unnamed_addr
+
+attributes #0 = { mustprogress nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { mustprogress nocallback nofree nosync nounwind readnone speculatable willreturn }
+attributes #2 = { nobuiltin allocsize(0) "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #3 = { nobuiltin nounwind "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #4 = { "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #5 = { nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #6 = { builtin nounwind allocsize(0) }
+attributes #7 = { builtin nounwind }
+attributes #8 = { nounwind }
+
+
+!5 = !{!6, !6, i64 0}
+!6 = !{!"any pointer", !7, i64 0}
+!7 = !{!"omnipotent char", !8, i64 0}
+!8 = !{!"Simple C++ TBAA"}
+!9 = !{!10, !10, i64 0}
+!10 = !{!"double", !7, i64 0}
+!11 = distinct !{!11, !12, !13}
+!12 = !{!"llvm.loop.mustprogress"}
+!13 = !{!"llvm.loop.unroll.disable"}
+!14 = distinct !{!14, !12, !13}
+!15 = !{!16, !16, i64 0}
+!16 = !{!"vtable pointer", !8, i64 0}
+!17 = !{!18, !10, i64 8}
+!18 = !{!"?AUObject@@", !10, i64 8}
+
+; CHECK: %rtti.CompleteObjectLocator = type { i32, i32, i32, i32, i32, i32 }
+; CHECK: define internal void @"diffe?new_delete_test@@YANPEAN_K@Z"
+; CHECK: define internal { double } @"diffe?eval@Object1@@UEAANN@Z"
diff --git a/enzyme/test/Integration/ReverseMode/allocatedtape.c b/enzyme/test/Integration/ReverseMode/allocatedtape.c
index b29ba9a7dd6c..0fd02521e0dd 100644
--- a/enzyme/test/Integration/ReverseMode/allocatedtape.c
+++ b/enzyme/test/Integration/ReverseMode/allocatedtape.c
@@ -19,7 +19,6 @@
 
 #include "test_utils.h"
 
-extern int enzyme_dup, enzyme_allocated, enzyme_tape;
 void __enzyme_autodiff(void*, ...);
 void* __enzyme_augmentfwd(void*, ...);
 void __enzyme_reverse(void*, ...);
diff --git a/enzyme/test/Integration/ReverseMode/allocatedtape_err.c b/enzyme/test/Integration/ReverseMode/allocatedtape_err.c
index ecd030fd00a8..f3ee53a65d09 100644
--- a/enzyme/test/Integration/ReverseMode/allocatedtape_err.c
+++ b/enzyme/test/Integration/ReverseMode/allocatedtape_err.c
@@ -8,8 +8,8 @@
 // RUN: if [ %llvmver -ge 12 ]; then %clang -std=c11 -g -O3 %s -S -emit-llvm -o -  %newLoadClangEnzyme -Xclang -verify; fi
 
 #include <math.h>
+#include "test_utils.h"
 
-extern int enzyme_allocated, enzyme_tape;
 void __enzyme_reverse(void*, ...);
 
 void f(double* x) {
diff --git a/enzyme/test/Integration/ReverseMode/cmplx.cpp b/enzyme/test/Integration/ReverseMode/cmplx.cpp
index d318088eaf62..5970d4cf94ae 100644
--- a/enzyme/test/Integration/ReverseMode/cmplx.cpp
+++ b/enzyme/test/Integration/ReverseMode/cmplx.cpp
@@ -17,10 +17,6 @@
 #include <math.h>
 #include <complex>      // std::complex, std::abs, std::arg
 
-int enzyme_dup;
-int enzyme_out;
-int enzyme_const;
-
 void __enzyme_autodiff(...);
 
 using namespace std;
@@ -62,4 +58,4 @@ int main ()
   APPROX_EQ(imag(dc), 8.0, 1e-7);
 
   return 0;
-}
\ No newline at end of file
+}
diff --git a/enzyme/test/Integration/ReverseMode/map.cpp b/enzyme/test/Integration/ReverseMode/map.cpp
index 5a90f7b745e0..36357c293860 100644
--- a/enzyme/test/Integration/ReverseMode/map.cpp
+++ b/enzyme/test/Integration/ReverseMode/map.cpp
@@ -15,8 +15,6 @@
 #include <unordered_map>
 #include <string>
 
-int enzyme_dup;
-
 using dictSU = std::unordered_map<std::string, double>;
 using dictCU = std::unordered_map<const char*, double>;
 
diff --git a/enzyme/test/Integration/ReverseMode/metarwr.c b/enzyme/test/Integration/ReverseMode/metarwr.c
index d1d447cfeb97..923a710dd6b8 100644
--- a/enzyme/test/Integration/ReverseMode/metarwr.c
+++ b/enzyme/test/Integration/ReverseMode/metarwr.c
@@ -29,8 +29,6 @@ void alldiv(double* __restrict__ a, long** meta) {
   a[0] = 0;
 }
 
-int enzyme_dup, enzyme_const;
-
 int main(int argc, char** argv) {
 
   long meta[2] = { 198, 200 }; 
diff --git a/enzyme/test/Integration/ReverseMode/omp3.c b/enzyme/test/Integration/ReverseMode/omp3.c
index bba86fe46b17..d6431f3e3953 100644
--- a/enzyme/test/Integration/ReverseMode/omp3.c
+++ b/enzyme/test/Integration/ReverseMode/omp3.c
@@ -11,7 +11,7 @@
 
 # include <stdlib.h>
 # include <stdio.h>
-
+#include "test_utils.h"
 
 void msg(double* in, int *len, unsigned int slen) {
     if (slen != 0) {
@@ -28,8 +28,6 @@ void msg(double* in, int *len, unsigned int slen) {
     }
 }
 
-int enzyme_dup, enzyme_const;
-
 void __enzyme_autodiff(void*, ...);
 
 int main ( int argc, char *argv[] ) {
diff --git a/enzyme/test/Integration/ReverseMode/perturbation.cpp b/enzyme/test/Integration/ReverseMode/perturbation.cpp
index 0286966d2b34..34639d614499 100644
--- a/enzyme/test/Integration/ReverseMode/perturbation.cpp
+++ b/enzyme/test/Integration/ReverseMode/perturbation.cpp
@@ -18,8 +18,6 @@ static double f(double x, double y) {
     return x * y;
 }
 
-extern int enzyme_const;
-
 static double df(double x) {
     return x * __enzyme_autodiff1((void*)f, enzyme_const, x, 3.0);
 }
diff --git a/enzyme/test/Integration/ReverseMode/remat.c b/enzyme/test/Integration/ReverseMode/remat.c
index 3c01ed6238c2..aec85a951f9b 100644
--- a/enzyme/test/Integration/ReverseMode/remat.c
+++ b/enzyme/test/Integration/ReverseMode/remat.c
@@ -30,7 +30,7 @@ void square(double** p_delv, double** p_e, int ** idx, int numReg, int numElemRe
         free(tmp);
     }
 }
-int enzyme_dup, enzyme_const;
+
 int main() {
     int numReg = 100;
     double *delv = (double*)malloc(sizeof(double)*numReg);
diff --git a/enzyme/test/Integration/ReverseMode/rwrloop.c b/enzyme/test/Integration/ReverseMode/rwrloop.c
index 747e2b9aaa26..547d990a04c4 100644
--- a/enzyme/test/Integration/ReverseMode/rwrloop.c
+++ b/enzyme/test/Integration/ReverseMode/rwrloop.c
@@ -28,8 +28,6 @@ double alldiv(double* __restrict__ a, int *__restrict__ N) {
   return sum;
 }
 
-int enzyme_dup, enzyme_const;
-
 int main(int argc, char** argv) {
 
   int N = 10;
diff --git a/enzyme/test/Integration/ReverseMode/test_utils.h b/enzyme/test/Integration/ReverseMode/test_utils.h
index 99a659248460..8d15bfe10719 100644
--- a/enzyme/test/Integration/ReverseMode/test_utils.h
+++ b/enzyme/test/Integration/ReverseMode/test_utils.h
@@ -3,6 +3,13 @@
 #include <stdbool.h>
 #include <math.h> 
 
+extern
+#ifdef __cplusplus
+"C"
+#endif
+int enzyme_allocated, enzyme_const, enzyme_dup, enzyme_dupnoneed, enzyme_out,
+    enzyme_tape;
+
 /*
 #ifdef __cplusplus
 extern "C" {
diff --git a/enzyme/test/Integration/ReverseMode/virtualshadow3.cpp b/enzyme/test/Integration/ReverseMode/virtualshadow3.cpp
index ed2eeeb6d8a4..96366a6a3b98 100644
--- a/enzyme/test/Integration/ReverseMode/virtualshadow3.cpp
+++ b/enzyme/test/Integration/ReverseMode/virtualshadow3.cpp
@@ -11,8 +11,6 @@ void __enzyme_autodiff(...);
 template <typename... Args>
 double __enzyme_autodiff(void *, Args...);
 
-int enzyme_dup, enzyme_const, enzyme_out, enzyme_dupnoneed;
-
 struct Object
 {
     virtual double eval(double v) = 0;