Remove relocations for vtable chunks (#17147)

* Separate sections READONLY_VCHUNKS and READONLY_DICTIONARY

* Remove relocations for second-level indirection of Vtable in case FEATURE_NGEN_RELOCS_OPTIMIZATIONS is enabled.

Introduce FEATURE_NGEN_RELOCS_OPTIMIZATIONS, under which NGEN specific relocations optimizations are enabled

* Replace push/pop of R11 in stubs with
  - str/ldr of R4 in space reserved in epilog for non-tail calls
  - usage of R4 with hybrid-tail calls (same as for EmitShuffleThunk)

* Replace push/pop of R11 for function epilog with usage of LR as helper register right before its restore from stack

1 files changed, 6 insertions, 0 deletions

diff --git a/src/jit/lower.h b/src/jit/lower.h
index 0d298e0a52..63319961be 100644
--- a/src/jit/lower.h
+++ b/src/jit/lower.h
@@ -208,6 +208,12 @@ private:
         return new (comp, GT_LEA) GenTreeAddrMode(resultType, base, index, 0, 0);
     }
 
+    GenTree* OffsetByIndexWithScale(GenTree* base, GenTree* index, unsigned scale)
+    {
+        var_types resultType = (base->TypeGet() == TYP_REF) ? TYP_BYREF : base->TypeGet();
+        return new (comp, GT_LEA) GenTreeAddrMode(resultType, base, index, scale, 0);
+    }
+
     // Replace the definition of the given use with a lclVar, allocating a new temp
     // if 'tempNum' is BAD_VAR_NUM.
     unsigned ReplaceWithLclVar(LIR::Use& use, unsigned tempNum = BAD_VAR_NUM)