Implement instantiating and unboxing through portable stublinker code… (#106)

* Implement instantiating and unboxing through portable stublinker code
- Handle only the cases with register to register moves
- Shares abi processing logic with delegate shuffle thunk creation
- Architecture specific logic is relatively simple
- Do not permit use of HELPERREG in computed instantiating stubs
- Fix GetArgLoc such that it works on all architectures and OS combinations

Add a JIT stress test case for testing all of the various combinations
- Use the same calling convention test architecture that was used as part of tail call work

Rename secure delegates to wrapper delegates
- Secure delegates are no longer a feature of the runtime
- But the wrapper delegate lives on as a workaround for a weird detail of the ARM32 abi

1 files changed, 2 insertions, 2 deletions

diff --git a/src/jit/importer.cpp b/src/jit/importer.cpp
index 50ddc58d89..98aa46d237 100644
--- a/src/jit/importer.cpp
+++ b/src/jit/importer.cpp
@@ -7842,9 +7842,9 @@ var_types Compiler::impImportCall(OPCODE                  opcode,
         /* Set the delegate flag */
         call->gtCall.gtCallMoreFlags |= GTF_CALL_M_DELEGATE_INV;
 
-        if (callInfo->secureDelegateInvoke)
+        if (callInfo->wrapperDelegateInvoke)
         {
-            call->gtCall.gtCallMoreFlags |= GTF_CALL_M_SECURE_DELEGATE_INV;
+            call->gtCall.gtCallMoreFlags |= GTF_CALL_M_WRAPPER_DELEGATE_INV;
         }
 
         if (opcode == CEE_CALLVIRT)