diff --git a/src/coreclr/vm/ceemain.cpp b/src/coreclr/vm/ceemain.cpp
index 3515db9792064a..fb59a8eb5903f6 100644
--- a/src/coreclr/vm/ceemain.cpp
+++ b/src/coreclr/vm/ceemain.cpp
@@ -865,7 +865,7 @@ void EEStartupHelper()
         // the completion of its initialization part that initializes COM as that has to be done
         // before the first Thread is attached. Thus we want to give the thread a bit more time.
         FinalizerThread::FinalizerThreadCreate();
-#endif
+#endif // TARGET_WINDOWS
 
         InitPreStubManager();
 
@@ -926,17 +926,18 @@ void EEStartupHelper()
         }
 #endif
 
+#ifdef TARGET_WINDOWS
+        // On windows the finalizer thread is already partially created and is waiting
+        // right before doing HasStarted(). We will release it now.
+        FinalizerThread::EnableFinalization();
+#elif defined(TARGET_WASM)
         // on wasm we need to run finalizers on main thread as we are single threaded
         // active issue: https://github.com/dotnet/runtime/issues/114096
-#if !defined(TARGET_WINDOWS) && !defined(TARGET_WASM)
+#else
         // This isn't done as part of InitializeGarbageCollector() above because
         // debugger must be initialized before creating EE thread objects
         FinalizerThread::FinalizerThreadCreate();
-#else
-        // On windows the finalizer thread is already partially created and is waiting
-        // right before doing HasStarted(). We will release it now.
-        FinalizerThread::EnableFinalization();
-#endif
+#endif // TARGET_WINDOWS
 
 #ifdef FEATURE_PERFTRACING
         // Finish setting up rest of EventPipe - specifically enable SampleProfiler if it was requested at startup.
diff --git a/src/coreclr/vm/dllimportcallback.cpp b/src/coreclr/vm/dllimportcallback.cpp
index 2224e189fdac1f..3947a139990a70 100644
--- a/src/coreclr/vm/dllimportcallback.cpp
+++ b/src/coreclr/vm/dllimportcallback.cpp
@@ -287,7 +287,13 @@ UMEntryThunkData* UMEntryThunkData::CreateUMEntryThunk()
         AllocMemTracker *pamTracker = &amTracker;
 
         pData = (UMEntryThunkData *)pamTracker->Track(pLoaderAllocator->GetLowFrequencyHeap()->AllocMem(S_SIZE_T(sizeof(UMEntryThunkData))));
-        UMEntryThunk* pThunk = (UMEntryThunk*)pamTracker->Track(pLoaderAllocator->GetNewStubPrecodeHeap()->AllocStub());
+        UMEntryThunk* pThunk;
+#ifdef FEATURE_PORTABLE_ENTRYPOINTS
+        PORTABILITY_ASSERT("WASMTODO: Marshalled delegates are not supported with wasm.");
+        pThunk = NULL;
+#else // !FEATURE_PORTABLE_ENTRYPOINTS
+        pThunk = (UMEntryThunk*)pamTracker->Track(pLoaderAllocator->GetNewStubPrecodeHeap()->AllocStub());
+#endif // FEATURE_PORTABLE_ENTRYPOINTS
 #ifdef FEATURE_PERFMAP
         PerfMap::LogStubs(__FUNCTION__, "UMEntryThunk", (PCODE)pThunk, sizeof(UMEntryThunk), PerfMapStubType::IndividualWithinBlock);
 #endif
diff --git a/src/coreclr/vm/finalizerthread.cpp b/src/coreclr/vm/finalizerthread.cpp
index ef5949ec055404..9be9ead073bfc5 100644
--- a/src/coreclr/vm/finalizerthread.cpp
+++ b/src/coreclr/vm/finalizerthread.cpp
@@ -43,7 +43,9 @@ void FinalizerThread::EnableFinalization()
 {
     WRAPPER_NO_CONTRACT;
 
+#ifndef TARGET_WASM
     hEventFinalizer->Set();
+#endif // !TARGET_WASM
 }
 
 namespace
diff --git a/src/coreclr/vm/loaderallocator.cpp b/src/coreclr/vm/loaderallocator.cpp
index c6cb894b008458..e6a113c62b6334 100644
--- a/src/coreclr/vm/loaderallocator.cpp
+++ b/src/coreclr/vm/loaderallocator.cpp
@@ -1235,10 +1235,12 @@ void LoaderAllocator::Init(BYTE *pExecutableHeapMemory)
 
     initReservedMem += dwStubHeapReserveSize;
 
+#ifndef FEATURE_PORTABLE_ENTRYPOINTS
     m_pNewStubPrecodeHeap = new (&m_NewStubPrecodeHeapInstance) InterleavedLoaderHeap(
                                                                            &m_stubPrecodeRangeList,
                                                                            false /* fUnlocked */,
                                                                            &s_stubPrecodeHeapConfig);
+#endif // !FEATURE_PORTABLE_ENTRYPOINTS
 
 #if defined(FEATURE_STUBPRECODE_DYNAMIC_HELPERS) && defined(FEATURE_READYTORUN)
     if (IsCollectible())
@@ -1434,11 +1436,13 @@ void LoaderAllocator::Terminate()
         m_pStubHeap = NULL;
     }
 
+#ifdef HAS_FIXUP_PRECODE
     if (m_pFixupPrecodeHeap != NULL)
     {
         m_pFixupPrecodeHeap->~InterleavedLoaderHeap();
         m_pFixupPrecodeHeap = NULL;
     }
+#endif // HAS_FIXUP_PRECODE
 
     #ifdef FEATURE_READYTORUN
     #ifdef FEATURE_STUBPRECODE_DYNAMIC_HELPERS
@@ -1459,11 +1463,13 @@ void LoaderAllocator::Terminate()
     #endif // FEATURE_STUBPRECODE_DYNAMIC_HELPERS
     #endif
 
+#ifndef FEATURE_PORTABLE_ENTRYPOINTS
     if (m_pNewStubPrecodeHeap != NULL)
     {
         m_pNewStubPrecodeHeap->~InterleavedLoaderHeap();
         m_pNewStubPrecodeHeap = NULL;
     }
+#endif // !FEATURE_PORTABLE_ENTRYPOINTS
 
     if (m_pFuncPtrStubs != NULL)
     {
diff --git a/src/coreclr/vm/loaderallocator.hpp b/src/coreclr/vm/loaderallocator.hpp
index 6c876fde167574..74c4b0c9bfc64b 100644
--- a/src/coreclr/vm/loaderallocator.hpp
+++ b/src/coreclr/vm/loaderallocator.hpp
@@ -310,8 +310,12 @@ class LoaderAllocator
     BYTE                m_LowFreqHeapInstance[sizeof(LoaderHeap)];
     BYTE                m_HighFreqHeapInstance[sizeof(LoaderHeap)];
     BYTE                m_StubHeapInstance[sizeof(LoaderHeap)];
+#ifdef HAS_FIXUP_PRECODE
     BYTE                m_FixupPrecodeHeapInstance[sizeof(InterleavedLoaderHeap)];
+#endif // HAS_FIXUP_PRECODE
+#ifndef FEATURE_PORTABLE_ENTRYPOINTS
     BYTE                m_NewStubPrecodeHeapInstance[sizeof(InterleavedLoaderHeap)];
+#endif // !FEATURE_PORTABLE_ENTRYPOINTS
     BYTE                m_StaticsHeapInstance[sizeof(LoaderHeap)];
 #ifdef FEATURE_READYTORUN
 #ifdef FEATURE_STUBPRECODE_DYNAMIC_HELPERS
@@ -330,8 +334,15 @@ class LoaderAllocator
     PTR_CodeFragmentHeap m_pDynamicHelpersHeap;
 #endif // !FEATURE_STUBPRECODE_DYNAMIC_HELPERS
 #endif // FEATURE_READYTORUN
+
+#ifdef HAS_FIXUP_PRECODE
     PTR_InterleavedLoaderHeap      m_pFixupPrecodeHeap;
+#endif // HAS_FIXUP_PRECODE
+
+#ifndef FEATURE_PORTABLE_ENTRYPOINTS
     PTR_InterleavedLoaderHeap      m_pNewStubPrecodeHeap;
+#endif // !FEATURE_PORTABLE_ENTRYPOINTS
+
     //****************************************************************************************
     OBJECTHANDLE        m_hLoaderAllocatorObjectHandle;
     FuncPtrStubs *      m_pFuncPtrStubs; // for GetMultiCallableAddrOfCode()
@@ -626,11 +637,13 @@ class LoaderAllocator
         return m_pStubHeap;
     }
 
+#ifndef FEATURE_PORTABLE_ENTRYPOINTS
     PTR_InterleavedLoaderHeap GetNewStubPrecodeHeap()
     {
         LIMITED_METHOD_CONTRACT;
         return m_pNewStubPrecodeHeap;
     }
+#endif // !FEATURE_PORTABLE_ENTRYPOINTS
 
 #if defined(FEATURE_READYTORUN) && defined(FEATURE_STUBPRECODE_DYNAMIC_HELPERS)
     PTR_InterleavedLoaderHeap GetDynamicHelpersStubHeap()
@@ -648,11 +661,13 @@ class LoaderAllocator
         return m_pExecutableHeap;
     }
 
+#ifdef HAS_FIXUP_PRECODE
     PTR_InterleavedLoaderHeap GetFixupPrecodeHeap()
     {
         LIMITED_METHOD_CONTRACT;
         return m_pFixupPrecodeHeap;
     }
+#endif // HAS_FIXUP_PRECODE
 
     PTR_CodeFragmentHeap GetDynamicHelpersHeap();