Adding new ReadyToRun helper for static cctor (#76898)

* Adding new ReadyToRun helper for static cctor

When accessing a static field the static cctor of the class is
called. Then the helper CORINFO_HELP_READYTORUN_STATIC_BASE
was printed twice during the same block, the first for the cctor
and the second for the getter, as if they were two calls for the
same method.

* Removing helper CORINFO_HELP_STRCNS_CURRENT_MODULE

* Removing CORINFO_HELP_STRCNS_CURRENT_MODULE

* Changing TYP_BYREF to TYP_VOID

* Formatting files

* Splitting up R2R STATIC_BASE in more helpers

* Updating STATIC_BASE R2R helper with new helpers

* Extending getReadyToRunHelper support

Consider the new R2R helpers that were group in
CORINFO_HELP_READYTORUN_STATIC_BASE.

* Keeping the preffered R2R helper constructor

In some cases the R2R helpers already call to the
constructor. In those cases we can insert a repeated
call that will be eliminated by CSE. There are still
cases in which we may need to call the constructor.

* Extending value numbering with new helpers

* Renaming helper

* Replacing STATIC_BASE helper in ilc for NON_GC

* Fixing helper order

* Refactoring code

* Supporting R2R_STATIC_BASE helper in nativeaot

* Moving compiler var initialization to compCompile

* Using new helper names in ILC

* Encapsulating common method

* Removing CORINFO_HELP_READYTORUN_STATIC_BASE helper

* Removing comment

* Moving new helper function to shared code

* Setting undef helper as default

* Repeating same helper call for CSE optimization

Avoid hardcoding the Non-GC helper call, which is used just to
trigger the constructor if it is needed, and use the existing
helper call in the code, so CSE would persist only one.

* Update src/coreclr/jit/compiler.cpp

Co-authored-by: Jakob Botsch Nielsen <Jakob.botsch.nielsen@gmail.com>

* Update src/coreclr/tools/Common/Compiler/DependencyAnalysis/CorInfoHelpers.cs

Co-authored-by: Jakob Botsch Nielsen <Jakob.botsch.nielsen@gmail.com>

* Update src/coreclr/tools/aot/ILCompiler.RyuJit/JitInterface/CorInfoImpl.RyuJit.cs

Co-authored-by: Michal Strehovský <MichalStrehovsky@users.noreply.github.com>

* Update src/coreclr/tools/aot/ILCompiler.ReadyToRun/JitInterface/CorInfoImpl.ReadyToRun.cs

Co-authored-by: Michal Strehovský <MichalStrehovsky@users.noreply.github.com>

* Formatting jithelpers.h

* Renaming function

* Moving CorInfoHelper function to R2R/AOT interface

* Updating preferred helper when is not thread type

* Removing some helper value nums

Static base helper was removed and cctor returns
void.

* Formatting file

* Ensuring void return when the helper is cctor

* Updating preferred helper when when classes matches

* Removing cctor trigger helper from aot,vm and jit

* Updating m_prefferedInitCctor default value

It is initialized with CORINFO_HELP_UNDEF and set to R2R GC or NON
GC Static Base later.

* Updating comments

* Updating comments

Co-authored-by: Brian Bohe <brianbohe@microsoft.com>
Co-authored-by: Jakob Botsch Nielsen <Jakob.botsch.nielsen@gmail.com>
Co-authored-by: Michal Strehovský <MichalStrehovsky@users.noreply.github.com>

src/coreclr/inc/corinfo.h

@@ -416,7 +416,6 @@ enum CorInfoHelpFunc
     CORINFO_HELP_NEWARR_1_ALIGN8,   // like VC, but aligns the array start
 
     CORINFO_HELP_STRCNS,            // create a new string literal
-    CORINFO_HELP_STRCNS_CURRENT_MODULE, // create a new string literal from the current module (used by NGen code)
 
     /* Object model */
 
@@ -591,7 +590,10 @@ enum CorInfoHelpFunc
     CORINFO_HELP_READYTORUN_NEWARR_1,
     CORINFO_HELP_READYTORUN_ISINSTANCEOF,
     CORINFO_HELP_READYTORUN_CHKCAST,
-    CORINFO_HELP_READYTORUN_STATIC_BASE,
+    CORINFO_HELP_READYTORUN_GCSTATIC_BASE,           // static gc field access
+    CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE,        // static non gc field access
+    CORINFO_HELP_READYTORUN_THREADSTATIC_BASE,
+    CORINFO_HELP_READYTORUN_NONGCTHREADSTATIC_BASE,
     CORINFO_HELP_READYTORUN_VIRTUAL_FUNC_PTR,
     CORINFO_HELP_READYTORUN_GENERIC_HANDLE,
     CORINFO_HELP_READYTORUN_DELEGATE_CTOR,

src/coreclr/inc/jiteeversionguid.h

@@ -43,11 +43,11 @@ typedef const GUID *LPCGUID;
 #define GUID_DEFINED
 #endif // !GUID_DEFINED
 
-constexpr GUID JITEEVersionIdentifier = { /* aaa9536e-1295-4741-a7d9-6c09a5b01512 */
-    0xaaa9536e,
-    0x1295,
-    0x4741,
-    {0xa7, 0xd9, 0x6c, 0x9, 0xa5, 0xb0, 0x15, 0x12}
+constexpr GUID JITEEVersionIdentifier = { /* fd13d4e1-9815-4336-8232-b27878b9ebd4 */
+    0xfd13d4e1,
+    0x9815,
+    0x4336,
+    {0x82, 0x32, 0xb2, 0x78, 0x78, 0xb9, 0xeb, 0xd4}
   };
 
 //////////////////////////////////////////////////////////////////////////////////////////////////////////

src/coreclr/inc/jithelpers.h

@@ -82,7 +82,6 @@
     DYNAMICJITHELPER(CORINFO_HELP_NEWARR_1_ALIGN8,      JIT_NewArr1,CORINFO_HELP_SIG_REG_ONLY)
 
     JITHELPER(CORINFO_HELP_STRCNS,              JIT_StrCns,         CORINFO_HELP_SIG_REG_ONLY)
-    JITHELPER(CORINFO_HELP_STRCNS_CURRENT_MODULE, NULL,             CORINFO_HELP_SIG_REG_ONLY)
 
     // Object model
     JITHELPER(CORINFO_HELP_INITCLASS,           JIT_InitClass,      CORINFO_HELP_SIG_REG_ONLY)
@@ -259,7 +258,10 @@
     JITHELPER(CORINFO_HELP_READYTORUN_NEWARR_1,            NULL,   CORINFO_HELP_SIG_NO_ALIGN_STUB)
     JITHELPER(CORINFO_HELP_READYTORUN_ISINSTANCEOF,        NULL,   CORINFO_HELP_SIG_NO_ALIGN_STUB)
     JITHELPER(CORINFO_HELP_READYTORUN_CHKCAST,             NULL,   CORINFO_HELP_SIG_NO_ALIGN_STUB)
-    JITHELPER(CORINFO_HELP_READYTORUN_STATIC_BASE,         NULL,   CORINFO_HELP_SIG_NO_ALIGN_STUB)
+    JITHELPER(CORINFO_HELP_READYTORUN_GCSTATIC_BASE,       NULL,   CORINFO_HELP_SIG_NO_ALIGN_STUB)
+    JITHELPER(CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE,    NULL,   CORINFO_HELP_SIG_NO_ALIGN_STUB)
+    JITHELPER(CORINFO_HELP_READYTORUN_THREADSTATIC_BASE,   NULL,   CORINFO_HELP_SIG_NO_ALIGN_STUB)
+    JITHELPER(CORINFO_HELP_READYTORUN_NONGCTHREADSTATIC_BASE, NULL,CORINFO_HELP_SIG_NO_ALIGN_STUB)
     JITHELPER(CORINFO_HELP_READYTORUN_VIRTUAL_FUNC_PTR,    NULL,   CORINFO_HELP_SIG_NO_ALIGN_STUB)
     JITHELPER(CORINFO_HELP_READYTORUN_GENERIC_HANDLE,      NULL,   CORINFO_HELP_SIG_NO_ALIGN_STUB)
     JITHELPER(CORINFO_HELP_READYTORUN_DELEGATE_CTOR,       NULL,   CORINFO_HELP_SIG_NO_ALIGN_STUB)

src/coreclr/jit/compiler.cpp

@@ -1968,6 +1968,8 @@ void Compiler::compInit(ArenaAllocator*       pAlloc,
 #endif // FEATURE_SIMD
 
     compUsesThrowHelper = false;
+
+    m_preferredInitCctor = CORINFO_HELP_UNDEF;
 }
 
 /*****************************************************************************

src/coreclr/jit/compiler.h

@@ -4661,6 +4661,12 @@ class Compiler
     PhaseStatus placeLoopAlignInstructions();
 #endif
 
+    // This field keep the R2R helper call that would be inserted to trigger the constructor
+    // of the static class. It is set as nongc or gc static base if they are imported, so
+    // CSE can eliminate the repeated call, or the chepeast helper function that triggers it.
+    CorInfoHelpFunc m_preferredInitCctor;
+    void            fgSetPreferredInitCctor();
+
     GenTree* fgInitThisClass();
 
     GenTreeCall* fgGetStaticsCCtorHelper(CORINFO_CLASS_HANDLE cls, CorInfoHelpFunc helper);

src/coreclr/jit/compiler.hpp

@@ -3597,7 +3597,9 @@ inline bool Compiler::IsSharedStaticHelper(GenTree* tree)
         helper == CORINFO_HELP_GETSHARED_GCTHREADSTATIC_BASE_DYNAMICCLASS ||
         helper == CORINFO_HELP_GETSHARED_NONGCTHREADSTATIC_BASE_DYNAMICCLASS ||
 #ifdef FEATURE_READYTORUN
-        helper == CORINFO_HELP_READYTORUN_STATIC_BASE || helper == CORINFO_HELP_READYTORUN_GENERIC_STATIC_BASE ||
+        helper == CORINFO_HELP_READYTORUN_GENERIC_STATIC_BASE || helper == CORINFO_HELP_READYTORUN_GCSTATIC_BASE ||
+        helper == CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE || helper == CORINFO_HELP_READYTORUN_THREADSTATIC_BASE ||
+        helper == CORINFO_HELP_READYTORUN_NONGCTHREADSTATIC_BASE ||
 #endif
         helper == CORINFO_HELP_CLASSINIT_SHARED_DYNAMICCLASS;
 #if 0

src/coreclr/jit/flowgraph.cpp

@@ -885,6 +885,19 @@ GenTreeCall* Compiler::fgGetStaticsCCtorHelper(CORINFO_CLASS_HANDLE cls, CorInfo
     return result;
 }
 
+//------------------------------------------------------------------------------
+// fgSetPreferredInitCctor: Set CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE as the
+// preferred call constructure if it is undefined.
+//
+void Compiler::fgSetPreferredInitCctor()
+{
+    if (m_preferredInitCctor == CORINFO_HELP_UNDEF)
+    {
+        // This is the cheapest helper that triggers the constructor.
+        m_preferredInitCctor = CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE;
+    }
+}
+
 GenTreeCall* Compiler::fgGetSharedCCtor(CORINFO_CLASS_HANDLE cls)
 {
 #ifdef FEATURE_READYTORUN
@@ -893,8 +906,8 @@ GenTreeCall* Compiler::fgGetSharedCCtor(CORINFO_CLASS_HANDLE cls)
         CORINFO_RESOLVED_TOKEN resolvedToken;
         memset(&resolvedToken, 0, sizeof(resolvedToken));
         resolvedToken.hClass = cls;
-
-        return impReadyToRunHelperToTree(&resolvedToken, CORINFO_HELP_READYTORUN_STATIC_BASE, TYP_BYREF);
+        fgSetPreferredInitCctor();
+        return impReadyToRunHelperToTree(&resolvedToken, m_preferredInitCctor, TYP_BYREF);
     }
 #endif
 

src/coreclr/jit/importer.cpp

@@ -4277,7 +4277,13 @@ GenTree* Compiler::impImportStaticFieldAccess(CORINFO_RESOLVED_TOKEN* pResolvedT
                     callFlags |= GTF_CALL_HOISTABLE;
                 }
 
-                op1 = gtNewHelperCallNode(CORINFO_HELP_READYTORUN_STATIC_BASE, TYP_BYREF);
+                op1 = gtNewHelperCallNode(pFieldInfo->helper, TYP_BYREF);
+                if (pResolvedToken->hClass == info.compClassHnd && m_preferredInitCctor == CORINFO_HELP_UNDEF &&
+                    (pFieldInfo->helper == CORINFO_HELP_READYTORUN_GCSTATIC_BASE ||
+                     pFieldInfo->helper == CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE))
+                {
+                    m_preferredInitCctor = pFieldInfo->helper;
+                }
                 op1->gtFlags |= callFlags;
 
                 op1->AsCall()->setEntryPoint(pFieldInfo->fieldLookup);

src/coreclr/jit/morph.cpp

@@ -8369,18 +8369,9 @@ GenTree* Compiler::fgMorphConst(GenTree* tree)
         {
             // For un-important blocks, we want to construct the string lazily
 
-            if (helper == CORINFO_HELP_STRCNS_CURRENT_MODULE)
-            {
-                tree = gtNewHelperCallNode(helper, TYP_REF,
-                                           gtNewIconNode(RidFromToken(tree->AsStrCon()->gtSconCPX), TYP_INT));
-            }
-            else
-            {
-                tree = gtNewHelperCallNode(helper, TYP_REF,
-                                           gtNewIconNode(RidFromToken(tree->AsStrCon()->gtSconCPX), TYP_INT),
-                                           gtNewIconEmbScpHndNode(tree->AsStrCon()->gtScpHnd));
-            }
-
+            tree =
+                gtNewHelperCallNode(helper, TYP_REF, gtNewIconNode(RidFromToken(tree->AsStrCon()->gtSconCPX), TYP_INT),
+                                    gtNewIconEmbScpHndNode(tree->AsStrCon()->gtScpHnd));
             return fgMorphTree(tree);
         }
     }
@@ -14312,7 +14303,8 @@ GenTree* Compiler::fgInitThisClass()
             if (!(info.compClassAttr & CORINFO_FLG_SHAREDINST))
             {
                 resolvedToken.hClass = info.compClassHnd;
-                return impReadyToRunHelperToTree(&resolvedToken, CORINFO_HELP_READYTORUN_STATIC_BASE, TYP_BYREF);
+                fgSetPreferredInitCctor();
+                return impReadyToRunHelperToTree(&resolvedToken, m_preferredInitCctor, TYP_BYREF);
             }
 
             // We need a runtime lookup.

src/coreclr/jit/utils.cpp

@@ -1399,7 +1399,10 @@ void HelperCallProperties::init()
             case CORINFO_HELP_GETSTATICFIELDADDR_TLS:
             case CORINFO_HELP_GETGENERICS_GCSTATIC_BASE:
             case CORINFO_HELP_GETGENERICS_NONGCSTATIC_BASE:
-            case CORINFO_HELP_READYTORUN_STATIC_BASE:
+            case CORINFO_HELP_READYTORUN_GCSTATIC_BASE:
+            case CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE:
+            case CORINFO_HELP_READYTORUN_THREADSTATIC_BASE:
+            case CORINFO_HELP_READYTORUN_NONGCTHREADSTATIC_BASE:
             case CORINFO_HELP_READYTORUN_GENERIC_STATIC_BASE:
 
                 // These may invoke static class constructors

src/coreclr/jit/valuenum.cpp

@@ -10194,7 +10194,10 @@ void Compiler::fgValueNumberHelperCallFunc(GenTreeCall* call, VNFunc vnf, ValueN
         }
         break;
 
-        case VNF_ReadyToRunStaticBase:
+        case VNF_ReadyToRunStaticBaseGC:
+        case VNF_ReadyToRunStaticBaseNonGC:
+        case VNF_ReadyToRunStaticBaseThread:
+        case VNF_ReadyToRunStaticBaseThreadNonGC:
         case VNF_ReadyToRunGenericStaticBase:
         case VNF_ReadyToRunIsInstanceOf:
         case VNF_ReadyToRunCastClass:
@@ -10555,8 +10558,17 @@ VNFunc Compiler::fgValueNumberJitHelperMethodVNFunc(CorInfoHelpFunc helpFunc)
         case CORINFO_HELP_GETSHARED_NONGCSTATIC_BASE_NOCTOR:
             vnf = VNF_GetsharedNongcstaticBaseNoctor;
             break;
-        case CORINFO_HELP_READYTORUN_STATIC_BASE:
-            vnf = VNF_ReadyToRunStaticBase;
+        case CORINFO_HELP_READYTORUN_GCSTATIC_BASE:
+            vnf = VNF_ReadyToRunStaticBaseGC;
+            break;
+        case CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE:
+            vnf = VNF_ReadyToRunStaticBaseNonGC;
+            break;
+        case CORINFO_HELP_READYTORUN_THREADSTATIC_BASE:
+            vnf = VNF_ReadyToRunStaticBaseThread;
+            break;
+        case CORINFO_HELP_READYTORUN_NONGCTHREADSTATIC_BASE:
+            vnf = VNF_ReadyToRunStaticBaseThreadNonGC;
             break;
         case CORINFO_HELP_READYTORUN_GENERIC_STATIC_BASE:
             vnf = VNF_ReadyToRunGenericStaticBase;

src/coreclr/jit/valuenumfuncs.h

@@ -115,7 +115,10 @@ ValueNumFuncDef(GetsharedGcstaticBase, 2, false, true, true)
 ValueNumFuncDef(GetsharedNongcstaticBase, 2, false, true, true)
 ValueNumFuncDef(GetsharedGcstaticBaseNoctor, 1, false, true, true)
 ValueNumFuncDef(GetsharedNongcstaticBaseNoctor, 1, false, true, true)
-ValueNumFuncDef(ReadyToRunStaticBase, 1, false, true, true)
+ValueNumFuncDef(ReadyToRunStaticBaseGC, 1, false, true, true)
+ValueNumFuncDef(ReadyToRunStaticBaseNonGC, 1, false, true, true)
+ValueNumFuncDef(ReadyToRunStaticBaseThread, 1, false, true, true)
+ValueNumFuncDef(ReadyToRunStaticBaseThreadNonGC, 1, false, true, true)
 ValueNumFuncDef(ReadyToRunGenericStaticBase, 2, false, true, true)
 ValueNumFuncDef(GetsharedGcstaticBaseDynamicclass, 2, false, true, true)
 ValueNumFuncDef(GetsharedNongcstaticBaseDynamicclass, 2, false, true, true)

src/coreclr/tools/Common/JitInterface/CorInfoHelpFunc.cs

@@ -59,7 +59,6 @@ which is the right helper to use to allocate an object of a given type. */
         CORINFO_HELP_NEWARR_1_ALIGN8,   // like VC, but aligns the array start
 
         CORINFO_HELP_STRCNS,            // create a new string literal
-        CORINFO_HELP_STRCNS_CURRENT_MODULE, // create a new string literal from the current module (used by NGen code)
         /* Object model */
 
         CORINFO_HELP_INITCLASS,         // Initialize class if not already initialized
@@ -233,7 +232,10 @@ which is the right helper to use to allocate an object of a given type. */
         CORINFO_HELP_READYTORUN_NEWARR_1,
         CORINFO_HELP_READYTORUN_ISINSTANCEOF,
         CORINFO_HELP_READYTORUN_CHKCAST,
-        CORINFO_HELP_READYTORUN_STATIC_BASE,
+        CORINFO_HELP_READYTORUN_GCSTATIC_BASE,
+        CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE,
+        CORINFO_HELP_READYTORUN_THREADSTATIC_BASE,
+        CORINFO_HELP_READYTORUN_NONGCTHREADSTATIC_BASE,
         CORINFO_HELP_READYTORUN_VIRTUAL_FUNC_PTR,
         CORINFO_HELP_READYTORUN_GENERIC_HANDLE,
         CORINFO_HELP_READYTORUN_DELEGATE_CTOR,

src/coreclr/tools/Common/JitInterface/CorInfoImpl.cs

@@ -3237,6 +3237,29 @@ private uint getThreadTLSIndex(ref void* ppIndirection)
             }
         }
 
+        public static ReadyToRunHelperId GetReadyToRunHelperFromStaticBaseHelper(CorInfoHelpFunc helper)
+        {
+            ReadyToRunHelperId res;
+            switch (helper)
+            {
+                case CorInfoHelpFunc.CORINFO_HELP_READYTORUN_GCSTATIC_BASE:
+                    res = ReadyToRunHelperId.GetGCStaticBase;
+                    break;
+                case CorInfoHelpFunc.CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE:
+                    res = ReadyToRunHelperId.GetNonGCStaticBase;
+                    break;
+                case CorInfoHelpFunc.CORINFO_HELP_READYTORUN_THREADSTATIC_BASE:
+                    res = ReadyToRunHelperId.GetThreadStaticBase;
+                    break;
+                case CorInfoHelpFunc.CORINFO_HELP_READYTORUN_NONGCTHREADSTATIC_BASE:
+                    res = ReadyToRunHelperId.GetThreadNonGcStaticBase;
+                    break;
+                default:
+                    throw new NotImplementedException("ReadyToRun: " + helper.ToString());
+            }
+            return res;
+        }
+
         private void getFunctionFixedEntryPoint(CORINFO_METHOD_STRUCT_* ftn, bool isUnsafeFunctionPointer, ref CORINFO_CONST_LOOKUP pResult)
         { throw new NotImplementedException("getFunctionFixedEntryPoint"); }
 

src/coreclr/tools/aot/ILCompiler.ReadyToRun/JitInterface/CorInfoImpl.ReadyToRun.cs

@@ -726,13 +726,16 @@ private bool getReadyToRunHelper(ref CORINFO_RESOLVED_TOKEN pResolvedToken, ref
                         pLookup = CreateConstLookupToSymbol(_compilation.SymbolNodeFactory.CreateReadyToRunHelper(ReadyToRunHelperId.CastClass, type));
                     }
                     break;
-                case CorInfoHelpFunc.CORINFO_HELP_READYTORUN_STATIC_BASE:
+                case CorInfoHelpFunc.CORINFO_HELP_READYTORUN_GCSTATIC_BASE:
+                case CorInfoHelpFunc.CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE:
+                case CorInfoHelpFunc.CORINFO_HELP_READYTORUN_THREADSTATIC_BASE:
+                case CorInfoHelpFunc.CORINFO_HELP_READYTORUN_NONGCTHREADSTATIC_BASE:
                     {
                         var type = HandleToObject(pResolvedToken.hClass);
                         if (type.IsCanonicalSubtype(CanonicalFormKind.Any))
                             return false;
-
-                        pLookup = CreateConstLookupToSymbol(_compilation.SymbolNodeFactory.CreateReadyToRunHelper(ReadyToRunHelperId.CctorTrigger, type));
+                        var helperId = GetReadyToRunHelperFromStaticBaseHelper(id);
+                        pLookup = CreateConstLookupToSymbol(_compilation.SymbolNodeFactory.CreateReadyToRunHelper(helperId, type));
                     }
                     break;
                 case CorInfoHelpFunc.CORINFO_HELP_READYTORUN_GENERIC_HANDLE:
@@ -1536,7 +1539,7 @@ private void getFieldInfo(ref CORINFO_RESOLVED_TOKEN pResolvedToken, CORINFO_MET
                 else
                 {
                     fieldAccessor = CORINFO_FIELD_ACCESSOR.CORINFO_FIELD_STATIC_SHARED_STATIC_HELPER;
-                    pResult->helper = CorInfoHelpFunc.CORINFO_HELP_READYTORUN_STATIC_BASE;
+                    pResult->helper = CorInfoHelpFunc.CORINFO_HELP_UNDEF;
 
                     ReadyToRunHelperId helperId = ReadyToRunHelperId.Invalid;
                     CORINFO_FIELD_ACCESSOR intrinsicAccessor;
@@ -1550,18 +1553,27 @@ private void getFieldInfo(ref CORINFO_RESOLVED_TOKEN pResolvedToken, CORINFO_MET
                     {
                         if (field.HasGCStaticBase)
                         {
+                            pResult->helper = CorInfoHelpFunc.CORINFO_HELP_READYTORUN_THREADSTATIC_BASE;
                             helperId = ReadyToRunHelperId.GetThreadStaticBase;
                         }
                         else
                         {
+                            pResult->helper = CorInfoHelpFunc.CORINFO_HELP_READYTORUN_NONGCTHREADSTATIC_BASE;
                             helperId = ReadyToRunHelperId.GetThreadNonGcStaticBase;
                         }
                     }
                     else
                     {
-                        helperId = field.HasGCStaticBase ?
-                            ReadyToRunHelperId.GetGCStaticBase :
-                            ReadyToRunHelperId.GetNonGCStaticBase;
+                        if (field.HasGCStaticBase)
+                        {
+                            pResult->helper = CorInfoHelpFunc.CORINFO_HELP_READYTORUN_GCSTATIC_BASE;
+                            helperId = ReadyToRunHelperId.GetGCStaticBase;
+                        }
+                        else
+                        {
+                            pResult->helper = CorInfoHelpFunc.CORINFO_HELP_READYTORUN_NONGCSTATIC_BASE;
+                            helperId = ReadyToRunHelperId.GetNonGCStaticBase;
+                        }
                     }
 
                     if (!_compilation.NodeFactory.CompilationModuleGroup.VersionsWithType(field.OwningType) &&