x86_64: TargetReg update for x86

Also includes changes in common code. Elimination of use of TargetReg
with one parameter and direct access to special target registers.

Change-Id: Ied2c1f87d4d1e4345248afe74bca40487a46a371
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>
Signed-off-by: Chao-ying Fu <chao-ying.fu@intel.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/compiler/dex/quick/codegen_util.cc b/compiler/dex/quick/codegen_util.cc
index 5ba0d3f5e4..5870d22208 100644
--- a/compiler/dex/quick/codegen_util.cc
+++ b/compiler/dex/quick/codegen_util.cc
@@ -1184,8 +1184,8 @@ void Mir2Lir::LoadCodeAddress(const MethodReference& target_method, InvokeType t
     // resolve these invokes to the same method, so we don't care which one we record here.
     data_target->operands[2] = type;
   }
-  // TODO: This is actually a pointer, not a reference.
-  LIR* load_pc_rel = OpPcRelLoad(TargetRefReg(symbolic_reg), data_target);
+  // Loads a code pointer. Code from oat file can be mapped anywhere.
+  LIR* load_pc_rel = OpPcRelLoad(TargetPtrReg(symbolic_reg), data_target);
   AppendLIR(load_pc_rel);
   DCHECK_NE(cu_->instruction_set, kMips) << reinterpret_cast<void*>(data_target);
 }
@@ -1201,6 +1201,7 @@ void Mir2Lir::LoadMethodAddress(const MethodReference& target_method, InvokeType
     // resolve these invokes to the same method, so we don't care which one we record here.
     data_target->operands[2] = type;
   }
+  // Loads an ArtMethod pointer, which is a reference as it lives in the heap.
   LIR* load_pc_rel = OpPcRelLoad(TargetRefReg(symbolic_reg), data_target);
   AppendLIR(load_pc_rel);
   DCHECK_NE(cu_->instruction_set, kMips) << reinterpret_cast<void*>(data_target);
@@ -1212,6 +1213,7 @@ void Mir2Lir::LoadClassType(uint32_t type_idx, SpecialTargetRegister symbolic_re
   if (data_target == nullptr) {
     data_target = AddWordData(&class_literal_list_, type_idx);
   }
+  // Loads a Class pointer, which is a reference as it lives in the heap.
   LIR* load_pc_rel = OpPcRelLoad(TargetRefReg(symbolic_reg), data_target);
   AppendLIR(load_pc_rel);
 }