ART: Introduce Uint8 loads in compiled code.

Some vectorization patterns are not recognized anymore.
This shall be fixed later.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Test: testrunner.py --target --optimizing on Nexus 5X
Test: Nexus 5X boots.
Bug: 23964345
Bug: 67935418
Change-Id: I587a328d4799529949c86fa8045c6df21e3a8617
diff --git a/compiler/optimizing/code_generator_mips.cc b/compiler/optimizing/code_generator_mips.cc
index e58f43e..6a347c7 100644
--- a/compiler/optimizing/code_generator_mips.cc
+++ b/compiler/optimizing/code_generator_mips.cc
@@ -6205,7 +6205,8 @@
 void InstructionCodeGeneratorMIPS::HandleFieldGet(HInstruction* instruction,
                                                   const FieldInfo& field_info,
                                                   uint32_t dex_pc) {
-  DataType::Type type = field_info.GetFieldType();
+  DCHECK_EQ(DataType::Size(field_info.GetFieldType()), DataType::Size(instruction->GetType()));
+  DataType::Type type = instruction->GetType();
   LocationSummary* locations = instruction->GetLocations();
   Location obj_loc = locations->InAt(0);
   Register obj = obj_loc.AsRegister<Register>();