KeyedLoadIC should have same register spec as LoadIC.

src/arm64/lithium-codegen-arm64.cc

Index: src/arm64/lithium-codegen-arm64.cc
diff --git a/src/arm64/lithium-codegen-arm64.cc b/src/arm64/lithium-codegen-arm64.cc
index 3f33089dae088358facc71bf6030e1a89614fad8..19e5b357014c3b04290774604ba1c63a4b825e8b 100644
--- a/src/arm64/lithium-codegen-arm64.cc
+++ b/src/arm64/lithium-codegen-arm64.cc
@@ -3653,8 +3653,8 @@ void LCodeGen::DoLoadKeyedFixed(LLoadKeyedFixed* instr) {
 
 void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) {
   ASSERT(ToRegister(instr->context()).is(cp));
-  ASSERT(ToRegister(instr->object()).is(KeyedLoadIC::ReceiverRegister()));
-  ASSERT(ToRegister(instr->key()).is(KeyedLoadIC::NameRegister()));
+  ASSERT(ToRegister(instr->object()).is(LoadIC::ReceiverRegister()));
+  ASSERT(ToRegister(instr->key()).is(LoadIC::NameRegister()));
 
   Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
@@ -3706,7 +3706,6 @@ void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) {
   ASSERT(ToRegister(instr->context()).is(cp));
   // LoadIC expects name and receiver in registers.
   ASSERT(ToRegister(instr->object()).is(LoadIC::ReceiverRegister()));
-  ASSERT(ToRegister(instr->object()).is(x0));
   __ Mov(LoadIC::NameRegister(), Operand(instr->name()));
 
   Handle<Code> ic = LoadIC::initialize_stub(isolate(), NOT_CONTEXTUAL);