Replace invoke kind kDexCacheViaMethod with kRuntimeCall.

In preparation for replacing the dex cache method array
with a hash-based array, get rid of one unnecessary use.
This method load kind is currently used only on mips for
irreducible loops and OSR, so this should have no impact
on x86/x86-64/arm/arm64.

Test: m test-art-host-gtest
Test: testrunner.py --host
Test: Repeat the above tests with manually changing
      kDexCachePcRelative to kRuntimeCall in sharpening.cc.
      (Ignore failures in 552-checker-sharpening.)
Bug: 30627598
Change-Id: Ifce42645f2dcc350bbb88c2f4642e88fc5f98152
diff --git a/compiler/optimizing/code_generator_x86.h b/compiler/optimizing/code_generator_x86.h
index 8130bd9..689f93e 100644
--- a/compiler/optimizing/code_generator_x86.h
+++ b/compiler/optimizing/code_generator_x86.h
@@ -408,9 +408,11 @@
       HInvokeStaticOrDirect* invoke) OVERRIDE;
 
   // Generate a call to a static or direct method.
-  void GenerateStaticOrDirectCall(HInvokeStaticOrDirect* invoke, Location temp) OVERRIDE;
+  void GenerateStaticOrDirectCall(
+      HInvokeStaticOrDirect* invoke, Location temp, SlowPathCode* slow_path = nullptr) OVERRIDE;
   // Generate a call to a virtual method.
-  void GenerateVirtualCall(HInvokeVirtual* invoke, Location temp) OVERRIDE;
+  void GenerateVirtualCall(
+      HInvokeVirtual* invoke, Location temp, SlowPathCode* slow_path = nullptr) OVERRIDE;
 
   void RecordBootMethodPatch(HInvokeStaticOrDirect* invoke);
   void RecordBootTypePatch(HLoadClass* load_class);