Make RuntimeType sealed and deleted support for introspection only loads (#19427)

- Sealed Runtime makes `is RuntimeType` and similar checks faster. These checks are fairly common in reflection.
- Delete support for introspection only loads from the runtime. We do not plan to use in .NET Core. The support for introspection loads inherited from RuntimeType and thus it is incompatible with sealed RuntimeType.

1 files changed, 0 insertions, 16 deletions

diff --git a/src/vm/domainfile.cpp b/src/vm/domainfile.cpp
index c8bbcf7241..314f165eea 100644
--- a/src/vm/domainfile.cpp
+++ b/src/vm/domainfile.cpp
@@ -409,12 +409,6 @@ DomainAssembly *DomainFile::GetDomainAssembly()
     return (DomainAssembly *) this;
 }
 
-BOOL DomainFile::IsIntrospectionOnly()
-{
-    WRAPPER_NO_CONTRACT;
-    return GetFile()->IsIntrospectionOnly();
-}
-
 // Return true iff the debugger should get notifications about this assembly.
 //
 // Notes:
@@ -431,7 +425,6 @@ BOOL DomainAssembly::IsVisibleToDebugger()
     SUPPORTS_DAC;
 
     // If you can't run an assembly, then don't send notifications to the debugger.
-    // This check includeds IsIntrospectionOnly().
     return ((GetAssembly() != NULL) ? GetAssembly()->HasRunAccess() : FALSE);
 }
 
@@ -1052,9 +1045,6 @@ void DomainFile::EagerFixups()
     WRAPPER_NO_CONTRACT;
 
 #ifdef FEATURE_PREJIT
-    if (IsIntrospectionOnly())
-        return; 
-    
     if (GetCurrentModule()->HasNativeImage())
     {
         GetCurrentModule()->RunEagerFixups();
@@ -1191,12 +1181,6 @@ void DomainFile::VerifyExecution()
     }
     CONTRACT_END;
 
-    if (GetModule()->IsIntrospectionOnly())
-    {
-        // Throw an exception
-        COMPlusThrow(kInvalidOperationException, IDS_EE_CODEEXECUTION_IN_INTROSPECTIVE_ASSEMBLY);
-    }
-
     if(GetFile()->PassiveDomainOnly())
     {
     // Remove path - location must be hidden for security purposes