PInvoke calli support for CoreRT (#18534)

* Ifdef out NGen-specific PInvoke calli inlining limitation for CoreCLR

This limitation seems to be a left-over from effort to eliminate JITing with fragile NGen.

* Delete dead partial-trust related code

* Allow PInvoke stub inlining

* Add convertCalliToCall JIT/EE interface method

* Update superpmi

16 files changed, 135 insertions, 52 deletions

diff --git a/src/ToolBox/superpmi/superpmi-shared/icorjitinfoimpl.h b/src/ToolBox/superpmi/superpmi-shared/icorjitinfoimpl.h
index 61d1785b51..6645626c24 100644
--- a/src/ToolBox/superpmi/superpmi-shared/icorjitinfoimpl.h
+++ b/src/ToolBox/superpmi/superpmi-shared/icorjitinfoimpl.h
@@ -906,6 +906,8 @@ void MethodCompileComplete(CORINFO_METHOD_HANDLE methHnd);
 // return a thunk that will copy the arguments for the given signature.
 void* getTailCallCopyArgsThunk(CORINFO_SIG_INFO* pSig, CorInfoHelperTailCallSpecialHandling flags);
 
+bool convertPInvokeCalliToCall(CORINFO_RESOLVED_TOKEN * pResolvedToken, bool fMustConvert);
+
 // return memory manager that the JIT can use to allocate a regular memory
 IEEMemoryManager* getMemoryManager();
 
diff --git a/src/ToolBox/superpmi/superpmi-shared/lwmlist.h b/src/ToolBox/superpmi/superpmi-shared/lwmlist.h
index 6a8b77e246..df9f43587a 100644
--- a/src/ToolBox/superpmi/superpmi-shared/lwmlist.h
+++ b/src/ToolBox/superpmi/superpmi-shared/lwmlist.h
@@ -35,6 +35,7 @@ LWM(CompareTypesForCast, DLDL, DWORD)
 LWM(CompareTypesForEquality, DLDL, DWORD)
 LWM(CompileMethod, DWORD, Agnostic_CompileMethod)
 LWM(ConstructStringLiteral, DLD, DLD)
+LWM(ConvertPInvokeCalliToCall, DLD, DWORDLONG)
 LWM(EmbedClassHandle, DWORDLONG, DLDL)
 LWM(EmbedFieldHandle, DWORDLONG, DLDL)
 LWM(EmbedGenericHandle, Agnostic_EmbedGenericHandle, Agnostic_CORINFO_GENERICHANDLE_RESULT)
diff --git a/src/ToolBox/superpmi/superpmi-shared/methodcontext.cpp b/src/ToolBox/superpmi/superpmi-shared/methodcontext.cpp
index aa806c31df..b5de52feaf 100644
--- a/src/ToolBox/superpmi/superpmi-shared/methodcontext.cpp
+++ b/src/ToolBox/superpmi/superpmi-shared/methodcontext.cpp
@@ -2436,6 +2436,41 @@ InfoAccessType MethodContext::repConstructStringLiteral(CORINFO_MODULE_HANDLE mo
     return (InfoAccessType)temp2.B;
 }
 
+void MethodContext::recConvertPInvokeCalliToCall(CORINFO_RESOLVED_TOKEN * pResolvedToken, bool fMustConvert, bool result)
+{
+    if (ConvertPInvokeCalliToCall == nullptr)
+        ConvertPInvokeCalliToCall = new LightWeightMap<DLD, DWORDLONG>();
+
+    DLD key;
+    ZeroMemory(&key, sizeof(DLD)); // We use the input structs as a key and use memcmp to compare.. so we need to zero
+                                   // out padding too
+    key.A = (DWORDLONG)pResolvedToken->tokenScope;
+    key.B = (DWORD)pResolvedToken->token;
+
+    DWORDLONG value = (DWORDLONG)(result ? pResolvedToken->hMethod : 0);
+
+    ConvertPInvokeCalliToCall->Add(key, value);
+    DEBUG_REC(dmpConvertPInvokeCalliToCall(key, value));
+}
+void MethodContext::dmpConvertPInvokeCalliToCall(DLD key, DWORDLONG value)
+{
+    printf("ConvertPInvokeCalliToCall key mod-%016llX tok-%08X, value %016llX", key.A, key.B, value);
+}
+bool MethodContext::repConvertPInvokeCalliToCall(CORINFO_RESOLVED_TOKEN * pResolvedToken, bool fMustConvert)
+{
+    DLD key;
+    ZeroMemory(&key, sizeof(DLD)); // We use the input structs as a key and use memcmp to compare.. so we need to zero
+                                   // out padding too
+    key.A = (DWORDLONG)pResolvedToken->tokenScope;
+    key.B = (DWORD)pResolvedToken->token;
+
+    DWORDLONG value = ConvertPInvokeCalliToCall->Get(key);
+    DEBUG_REP(dmpGetArgType(key, value));
+
+    pResolvedToken->hMethod = (CORINFO_METHOD_HANDLE)value;
+    return value != 0;
+}
+
 void MethodContext::recEmptyStringLiteral(void** pValue, InfoAccessType result)
 {
     if (EmptyStringLiteral == nullptr)
diff --git a/src/ToolBox/superpmi/superpmi-shared/methodcontext.h b/src/ToolBox/superpmi/superpmi-shared/methodcontext.h
index b7f19a345a..ac7acf1ea1 100644
--- a/src/ToolBox/superpmi/superpmi-shared/methodcontext.h
+++ b/src/ToolBox/superpmi/superpmi-shared/methodcontext.h
@@ -805,6 +805,10 @@ public:
     void dmpConstructStringLiteral(DLD key, DLD value);
     InfoAccessType repConstructStringLiteral(CORINFO_MODULE_HANDLE module, mdToken metaTok, void** ppValue);
 
+    void recConvertPInvokeCalliToCall(CORINFO_RESOLVED_TOKEN * pResolvedToken, bool fMustConvert, bool result);
+    void dmpConvertPInvokeCalliToCall(DLD key, DWORDLONG value);
+    bool repConvertPInvokeCalliToCall(CORINFO_RESOLVED_TOKEN * pResolvedToken, bool fMustConvert);
+
     void recEmptyStringLiteral(void** ppValue, InfoAccessType result);
     void dmpEmptyStringLiteral(DWORD key, DLD value);
     InfoAccessType repEmptyStringLiteral(void** ppValue);
@@ -1311,6 +1315,7 @@ enum mcPackets
     Packet_CompareTypesForEquality                       = 164, // Added 10/4/17
     Packet_CompileMethod                                 = 143, // retired as 141 on 2013/07/09
     Packet_ConstructStringLiteral                        = 15,
+    Packet_ConvertPInvokeCalliToCall                     = 169, // Added 4/29/18
     Packet_EmbedClassHandle                              = 16,
     Packet_EmbedFieldHandle                              = 17,
     Packet_EmbedGenericHandle                            = 18,
diff --git a/src/ToolBox/superpmi/superpmi-shim-collector/icorjitinfo.cpp b/src/ToolBox/superpmi/superpmi-shim-collector/icorjitinfo.cpp
index d63a8acb90..5d70a5488f 100644
--- a/src/ToolBox/superpmi/superpmi-shim-collector/icorjitinfo.cpp
+++ b/src/ToolBox/superpmi/superpmi-shim-collector/icorjitinfo.cpp
@@ -1825,6 +1825,14 @@ InfoAccessType interceptor_ICJI::constructStringLiteral(CORINFO_MODULE_HANDLE mo
     return temp;
 }
 
+bool interceptor_ICJI::convertPInvokeCalliToCall(CORINFO_RESOLVED_TOKEN * pResolvedToken, bool fMustConvert)
+{
+    mc->cr->AddCall("convertPInvokeCalliToCall");
+    bool result = original_ICorJitInfo->convertPInvokeCalliToCall(pResolvedToken, fMustConvert);
+    mc->recConvertPInvokeCalliToCall(pResolvedToken, fMustConvert, result);
+    return result;
+}
+
 InfoAccessType interceptor_ICJI::emptyStringLiteral(void** ppValue)
 {
     mc->cr->AddCall("emptyStringLiteral");
diff --git a/src/ToolBox/superpmi/superpmi-shim-counter/icorjitinfo.cpp b/src/ToolBox/superpmi/superpmi-shim-counter/icorjitinfo.cpp
index 1b18072f41..316fd8c1ed 100644
--- a/src/ToolBox/superpmi/superpmi-shim-counter/icorjitinfo.cpp
+++ b/src/ToolBox/superpmi/superpmi-shim-counter/icorjitinfo.cpp
@@ -1412,6 +1412,12 @@ InfoAccessType interceptor_ICJI::constructStringLiteral(CORINFO_MODULE_HANDLE mo
     return original_ICorJitInfo->constructStringLiteral(module, metaTok, ppValue);
 }
 
+bool interceptor_ICJI::convertPInvokeCalliToCall(CORINFO_RESOLVED_TOKEN * pResolvedToken, bool fMustConvert)
+{
+    mcs->AddCall("convertPInvokeCalliToCall");
+    return original_ICorJitInfo->convertPInvokeCalliToCall(pResolvedToken, fMustConvert);
+}
+
 InfoAccessType interceptor_ICJI::emptyStringLiteral(void** ppValue)
 {
     mcs->AddCall("emptyStringLiteral");
diff --git a/src/ToolBox/superpmi/superpmi-shim-simple/icorjitinfo.cpp b/src/ToolBox/superpmi/superpmi-shim-simple/icorjitinfo.cpp
index ac7a6d9f30..97c434755e 100644
--- a/src/ToolBox/superpmi/superpmi-shim-simple/icorjitinfo.cpp
+++ b/src/ToolBox/superpmi/superpmi-shim-simple/icorjitinfo.cpp
@@ -1266,6 +1266,11 @@ InfoAccessType interceptor_ICJI::constructStringLiteral(CORINFO_MODULE_HANDLE mo
     return original_ICorJitInfo->constructStringLiteral(module, metaTok, ppValue);
 }
 
+bool interceptor_ICJI::convertPInvokeCalliToCall(CORINFO_RESOLVED_TOKEN * pResolvedToken, bool fMustConvert)
+{
+    return original_ICorJitInfo->convertPInvokeCalliToCall(pResolvedToken, fMustConvert);
+}
+
 InfoAccessType interceptor_ICJI::emptyStringLiteral(void** ppValue)
 {
     return original_ICorJitInfo->emptyStringLiteral(ppValue);
diff --git a/src/ToolBox/superpmi/superpmi/icorjitinfo.cpp b/src/ToolBox/superpmi/superpmi/icorjitinfo.cpp
index 852b1147e6..43ac5a8502 100644
--- a/src/ToolBox/superpmi/superpmi/icorjitinfo.cpp
+++ b/src/ToolBox/superpmi/superpmi/icorjitinfo.cpp
@@ -1580,6 +1580,12 @@ void* MyICJI::getTailCallCopyArgsThunk(CORINFO_SIG_INFO* pSig, CorInfoHelperTail
     return jitInstance->mc->repGetTailCallCopyArgsThunk(pSig, flags);
 }
 
+bool MyICJI::convertPInvokeCalliToCall(CORINFO_RESOLVED_TOKEN * pResolvedToken, bool fMustConvert)
+{
+    jitInstance->mc->cr->AddCall("convertPInvokeCalliToCall");
+    return jitInstance->mc->repConvertPInvokeCalliToCall(pResolvedToken, fMustConvert);
+}
+
 // Stuff directly on ICorJitInfo
 
 // Returns extended flags for a particular compilation instance.
diff --git a/src/inc/corinfo.h b/src/inc/corinfo.h
index d430412f3b..1e4bb96184 100644
--- a/src/inc/corinfo.h
+++ b/src/inc/corinfo.h
@@ -213,11 +213,11 @@ TODO: Talk about initializing strutures before use
     #define SELECTANY extern __declspec(selectany)
 #endif
 
-SELECTANY const GUID JITEEVersionIdentifier = { /* 0ba106c8-81a0-407f-99a1-928448c1eb62 */
-    0x0ba106c8,
-    0x81a0,
-    0x407f,
-    {0x99, 0xa1, 0x92, 0x84, 0x48, 0xc1, 0xeb, 0x62}
+SELECTANY const GUID JITEEVersionIdentifier = { /* dc72a60f-22f2-49fb-809f-00077f3eb1a8 */
+    0xdc72a60f,
+    0x22f2,
+    0x49fb,
+    { 0x80, 0x9f, 0x0, 0x7, 0x7f, 0x3e, 0xb1, 0xa8}
 };
 
 //////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -3153,6 +3153,12 @@ public:
                     CORINFO_SIG_INFO       *pSig,
                     CorInfoHelperTailCallSpecialHandling flags
                     ) = 0;
+
+    // Optionally, convert calli to regular method call. This is for PInvoke argument marshalling.
+    virtual bool convertPInvokeCalliToCall(
+                    CORINFO_RESOLVED_TOKEN * pResolvedToken,
+                    bool fMustConvert
+                    ) = 0;
 };
 
 /**********************************************************************************/
diff --git a/src/jit/flowgraph.cpp b/src/jit/flowgraph.cpp
index df05fa4fd3..fb35965b3d 100644
--- a/src/jit/flowgraph.cpp
+++ b/src/jit/flowgraph.cpp
@@ -4752,6 +4752,7 @@ void Compiler::fgFindJumpTargets(const BYTE* codeAddr, IL_OFFSET codeSize, BYTE*
             }
             break;
 
+#if !defined(FEATURE_CORECLR)
             case CEE_CALLI:
 
                 // CEE_CALLI should not be inlined if the call indirect target has a calling convention other than
@@ -4784,6 +4785,7 @@ void Compiler::fgFindJumpTargets(const BYTE* codeAddr, IL_OFFSET codeSize, BYTE*
                     }
                 }
                 break;
+#endif // FEATURE_CORECLR
 
             case CEE_JMP:
                 retBlocks++;
diff --git a/src/jit/importer.cpp b/src/jit/importer.cpp
index af21deaaed..b236c97507 100644
--- a/src/jit/importer.cpp
+++ b/src/jit/importer.cpp
@@ -4753,7 +4753,7 @@ bool Compiler::verCheckTailCallConstraint(
     if (opcode == CEE_CALLI)
     {
         /* Get the call sig */
-        eeGetSig(pResolvedToken->token, info.compScopeHnd, impTokenLookupContextHandle, &sig);
+        eeGetSig(pResolvedToken->token, pResolvedToken->tokenScope, pResolvedToken->tokenContext, &sig);
 
         // We don't know the target method, so we have to infer the flags, or
         // assume the worst-case.
@@ -4781,7 +4781,7 @@ bool Compiler::verCheckTailCallConstraint(
 
     if ((sig.callConv & CORINFO_CALLCONV_MASK) == CORINFO_CALLCONV_VARARG)
     {
-        eeGetCallSiteSig(pResolvedToken->token, info.compScopeHnd, impTokenLookupContextHandle, &sig);
+        eeGetCallSiteSig(pResolvedToken->token, pResolvedToken->tokenScope, pResolvedToken->tokenContext, &sig);
     }
 
     // check compatibility of the arguments
@@ -4849,7 +4849,7 @@ bool Compiler::verCheckTailCallConstraint(
         if (methodClassFlgs & CORINFO_FLG_ARRAY)
         {
             assert(opcode != CEE_CALLI);
-            eeGetCallSiteSig(pResolvedToken->token, info.compScopeHnd, impTokenLookupContextHandle, &sig);
+            eeGetCallSiteSig(pResolvedToken->token, pResolvedToken->tokenScope, pResolvedToken->tokenContext, &sig);
         }
     }
 
@@ -6097,8 +6097,11 @@ void Compiler::impCheckForPInvokeCall(
     }
     optNativeCallCount++;
 
-    if (opts.jitFlags->IsSet(JitFlags::JIT_FLAG_IL_STUB) && methHnd == nullptr)
+    if (methHnd == nullptr && (opts.jitFlags->IsSet(JitFlags::JIT_FLAG_IL_STUB) || IsTargetAbi(CORINFO_CORERT_ABI)))
     {
+        // PInvoke in CoreRT ABI must be always inlined. Non-inlineable CALLI cases have been
+        // converted to regular method calls earlier using convertPInvokeCalliToCall.
+
         // PInvoke CALLI in IL stubs must be inlined
     }
     else
@@ -6967,8 +6970,19 @@ var_types Compiler::impImportCall(OPCODE                  opcode,
 
     if (opcode == CEE_CALLI)
     {
+        if (IsTargetAbi(CORINFO_CORERT_ABI))
+        {
+            // See comment in impCheckForPInvokeCall
+            BasicBlock* block = compIsForInlining() ? impInlineInfo->iciBlock : compCurBB;
+            if (info.compCompHnd->convertPInvokeCalliToCall(pResolvedToken, !impCanPInvokeInlineCallSite(block)))
+            {
+                eeGetCallInfo(pResolvedToken, nullptr, CORINFO_CALLINFO_ALLOWINSTPARAM, callInfo);
+                return impImportCall(CEE_CALL, pResolvedToken, nullptr, nullptr, prefixFlags, callInfo, rawILOffset);
+            }
+        }
+
         /* Get the call site sig */
-        eeGetSig(pResolvedToken->token, info.compScopeHnd, impTokenLookupContextHandle, &calliSig);
+        eeGetSig(pResolvedToken->token, pResolvedToken->tokenScope, pResolvedToken->tokenContext, &calliSig);
 
         callRetTyp = JITtype2varType(calliSig.retType);
 
@@ -7532,7 +7546,7 @@ var_types Compiler::impImportCall(OPCODE                  opcode,
 #ifdef DEBUG
             unsigned numArgsDef = sig->numArgs;
 #endif
-            eeGetCallSiteSig(pResolvedToken->token, info.compScopeHnd, impTokenLookupContextHandle, sig);
+            eeGetCallSiteSig(pResolvedToken->token, pResolvedToken->tokenScope, pResolvedToken->tokenContext, sig);
 
 #ifdef DEBUG
             // We cannot lazily obtain the signature of a vararg call because using its method
@@ -13317,7 +13331,9 @@ void Compiler::impImportBlockCode(BasicBlock* block)
                     memset(&resolvedToken, 0, sizeof(resolvedToken));
                     memset(&callInfo, 0, sizeof(callInfo));
 
-                    resolvedToken.token = getU4LittleEndian(codeAddr);
+                    resolvedToken.token        = getU4LittleEndian(codeAddr);
+                    resolvedToken.tokenContext = impTokenLookupContextHandle;
+                    resolvedToken.tokenScope   = info.compScopeHnd;
                 }
 
             CALL: // memberRef should be set.
@@ -13416,31 +13432,6 @@ void Compiler::impImportBlockCode(BasicBlock* block)
                     // For delegates, this is the call to the delegate constructor, not the access check on the
                     // LD(virt)FTN.
                     impHandleAccessAllowed(callInfo.accessAllowed, &callInfo.callsiteCalloutHelper);
-
-#if 0 // DevDiv 410397 - This breaks too many obfuscated apps to do this in an in-place release
-
-                // DevDiv 291703 - we need to check for accessibility between the caller of InitializeArray
-                // and the field it is reading, thus it is now unverifiable to not immediately precede with
-                // ldtoken <filed token>, and we now check accessibility
-                if ((callInfo.methodFlags & CORINFO_FLG_INTRINSIC) &&
-                    (info.compCompHnd->getIntrinsicID(callInfo.hMethod) == CORINFO_INTRINSIC_InitializeArray))
-                {
-                    if (prevOpcode != CEE_LDTOKEN)
-                    {
-                        Verify(prevOpcode == CEE_LDTOKEN, "Need ldtoken for InitializeArray");
-                    }
-                    else
-                    {
-                        assert(lastLoadToken != NULL);
-                        // Now that we know we have a token, verify that it is accessible for loading
-                        CORINFO_RESOLVED_TOKEN resolvedLoadField;
-                        impResolveToken(lastLoadToken, &resolvedLoadField, CORINFO_TOKENKIND_Field);
-                        eeGetFieldInfo(&resolvedLoadField, CORINFO_ACCESS_INIT_ARRAY, &fieldInfo);
-                        impHandleAccessAllowed(fieldInfo.accessAllowed, &fieldInfo.accessCalloutHelper);
-                    }
-                }
-
-#endif // DevDiv 410397
                 }
 
                 if (tiVerificationNeeded)
@@ -13450,21 +13441,6 @@ void Compiler::impImportBlockCode(BasicBlock* block)
                                   &callInfo DEBUGARG(info.compFullName));
                 }
 
-                // Insert delegate callout here.
-                if (opcode == CEE_NEWOBJ && (mflags & CORINFO_FLG_CONSTRUCTOR) && (clsFlags & CORINFO_FLG_DELEGATE))
-                {
-#ifdef DEBUG
-                    // We should do this only if verification is enabled
-                    // If verification is disabled, delegateCreateStart will not be initialized correctly
-                    if (tiVerificationNeeded)
-                    {
-                        mdMemberRef delegateMethodRef = mdMemberRefNil;
-                        // We should get here only for well formed delegate creation.
-                        assert(verCheckDelegateCreation(delegateCreateStart, codeAddr - 1, delegateMethodRef));
-                    }
-#endif
-                }
-
                 callTyp = impImportCall(opcode, &resolvedToken, constraintCall ? &constrainedResolvedToken : nullptr,
                                         newObjThisPtr, prefixFlags, &callInfo, opcodeOffs);
                 if (compDonotInline())
@@ -19081,6 +19057,17 @@ void Compiler::impMarkInlineCandidate(GenTree*               callNode,
         return;
     }
 
+    /* Check legality of PInvoke callsite (for inlining of marshalling code) */
+
+    if (methAttr & CORINFO_FLG_PINVOKE)
+    {
+        if (!impCanPInvokeInlineCallSite(compCurBB))
+        {
+            inlineResult.NoteFatal(InlineObservation::CALLSITE_PINVOKE_EH);
+            return;
+        }
+    }
+
     InlineCandidateInfo* inlineCandidateInfo = nullptr;
     impCheckCanInline(call, fncHandle, methAttr, exactContextHnd, &inlineCandidateInfo, &inlineResult);
 
diff --git a/src/jit/inline.def b/src/jit/inline.def
index 4dd67402fb..2594c072d4 100644
--- a/src/jit/inline.def
+++ b/src/jit/inline.def
@@ -159,6 +159,7 @@ INLINE_OBSERVATION(REQUIRES_SAME_THIS,        bool,   "requires same this",
 INLINE_OBSERVATION(RETURN_TYPE_MISMATCH,      bool,   "return type mismatch",          FATAL,       CALLSITE)
 INLINE_OBSERVATION(STFLD_NEEDS_HELPER,        bool,   "stfld needs helper",            FATAL,       CALLSITE)
 INLINE_OBSERVATION(TOO_MANY_LOCALS,           bool,   "too many locals",               FATAL,       CALLSITE)
+INLINE_OBSERVATION(PINVOKE_EH,                bool,   "PInvoke call site with EH",     FATAL,       CALLSITE)
 
 // ------ Call Site Performance ------- 
 
diff --git a/src/vm/jitinterface.cpp b/src/vm/jitinterface.cpp
index 0a921e56fa..367dfb091a 100644
--- a/src/vm/jitinterface.cpp
+++ b/src/vm/jitinterface.cpp
@@ -13746,6 +13746,11 @@ void* CEEInfo::getTailCallCopyArgsThunk(CORINFO_SIG_INFO       *pSig,
     return ftn;
 }
 
+bool CEEInfo::convertPInvokeCalliToCall(CORINFO_RESOLVED_TOKEN * pResolvedToken, bool fMustConvert)
+{
+    return false;
+}
+
 void CEEInfo::allocMem (
         ULONG               hotCodeSize,    /* IN */
         ULONG               coldCodeSize,   /* IN */
diff --git a/src/vm/jitinterface.h b/src/vm/jitinterface.h
index 1e4c847204..ebe64edbb9 100644
--- a/src/vm/jitinterface.h
+++ b/src/vm/jitinterface.h
@@ -950,6 +950,9 @@ public:
     void* getTailCallCopyArgsThunk(CORINFO_SIG_INFO       *pSig,
                                    CorInfoHelperTailCallSpecialHandling flags);
 
+    bool convertPInvokeCalliToCall(CORINFO_RESOLVED_TOKEN * pResolvedToken,
+                                   bool fMustConvert);
+
     void getFunctionEntryPoint(CORINFO_METHOD_HANDLE   ftn,                 /* IN  */
                                CORINFO_CONST_LOOKUP *  pResult,             /* OUT */
                                CORINFO_ACCESS_FLAGS    accessFlags = CORINFO_ACCESS_ANY);
diff --git a/src/zap/zapinfo.cpp b/src/zap/zapinfo.cpp
index 725a326e06..634a63e331 100644
--- a/src/zap/zapinfo.cpp
+++ b/src/zap/zapinfo.cpp
@@ -1690,6 +1690,13 @@ void* ZapInfo::getTailCallCopyArgsThunk (
     return m_pImage->GetWrappers()->GetStub(pStub);
 }
 
+bool ZapInfo::convertPInvokeCalliToCall(
+                    CORINFO_RESOLVED_TOKEN * pResolvedToken,
+                    bool fMustConvert)
+{
+    return false;
+}
+
 #ifdef FEATURE_READYTORUN_COMPILER
 ReadyToRunHelper MapReadyToRunHelper(CorInfoHelpFunc func, bool * pfOptimizeForSize)
 {
diff --git a/src/zap/zapinfo.h b/src/zap/zapinfo.h
index 0e2bf9dcaf..8b5ad1d4e8 100644
--- a/src/zap/zapinfo.h
+++ b/src/zap/zapinfo.h
@@ -360,6 +360,10 @@ public:
                       CORINFO_SIG_INFO       *pSig,
                       CorInfoHelperTailCallSpecialHandling flags);
 
+    bool convertPInvokeCalliToCall(
+                      CORINFO_RESOLVED_TOKEN * pResolvedToken,
+                      bool fMustConvert);
+
     void getFunctionEntryPoint(
                       CORINFO_METHOD_HANDLE   ftn,                 /* IN  */
                       CORINFO_CONST_LOOKUP *  pResult,             /* OUT */