Revert "Revert "Use HCurrentMethod in HInvokeStaticOrDirect.""

Fix was to special case baseline for x86, which does not have enough
registers to allocate the current method.

This reverts commit c345f141f11faad177aa9635a78088d00cf66086.

Change-Id: I5997aa52f8d4df373ae5ff4d4150dac0c44c4c10
diff --git a/compiler/optimizing/intrinsics_x86_64.cc b/compiler/optimizing/intrinsics_x86_64.cc
index d6c90ff..8915314 100644
--- a/compiler/optimizing/intrinsics_x86_64.cc
+++ b/compiler/optimizing/intrinsics_x86_64.cc
@@ -129,7 +129,8 @@
     MoveArguments(invoke_, codegen);
 
     if (invoke_->IsInvokeStaticOrDirect()) {
-      codegen->GenerateStaticOrDirectCall(invoke_->AsInvokeStaticOrDirect(), CpuRegister(RDI));
+      codegen->GenerateStaticOrDirectCall(
+          invoke_->AsInvokeStaticOrDirect(), Location::RegisterLocation(RDI));
       RecordPcInfo(codegen, invoke_, invoke_->GetDexPc());
     } else {
       UNIMPLEMENTED(FATAL) << "Non-direct intrinsic slow-path not yet implemented";
@@ -609,7 +610,8 @@
   MoveArguments(invoke, codegen);
 
   DCHECK(invoke->IsInvokeStaticOrDirect());
-  codegen->GenerateStaticOrDirectCall(invoke->AsInvokeStaticOrDirect(), CpuRegister(RDI));
+  codegen->GenerateStaticOrDirectCall(
+      invoke->AsInvokeStaticOrDirect(), Location::RegisterLocation(RDI));
   codegen->RecordPcInfo(invoke, invoke->GetDexPc());
 
   // Copy the result back to the expected output.