MIPS: Use IC register definitions in platform files.

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index bcdb7dd1b39c30f63819d5ff40054d45cb9e03f9..6b75886ebdfe63c967433e64fd4ed50a6af99cf0 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -2030,7 +2030,8 @@ LInstruction* LChunkBuilder::DoLoadGlobalCell(HLoadGlobalCell* instr) {
 
 LInstruction* LChunkBuilder::DoLoadGlobalGeneric(HLoadGlobalGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), cp);
-  LOperand* global_object = UseFixed(instr->global_object(), a0);
+  LOperand* global_object = UseFixed(instr->global_object(),
+                                     LoadIC::ReceiverRegister());
   LLoadGlobalGeneric* result =
       new(zone()) LLoadGlobalGeneric(context, global_object);
   return MarkAsCall(DefineFixed(result, v0), instr);
@@ -2084,7 +2085,7 @@ LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) {
 
 LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), cp);
-  LOperand* object = UseFixed(instr->object(), a0);
+  LOperand* object = UseFixed(instr->object(), LoadIC::ReceiverRegister());
   LInstruction* result =
       DefineFixed(new(zone()) LLoadNamedGeneric(context, object), v0);
   return MarkAsCall(result, instr);
@@ -2144,8 +2145,8 @@ LInstruction* LChunkBuilder::DoLoadKeyed(HLoadKeyed* instr) {
 
 LInstruction* LChunkBuilder::DoLoadKeyedGeneric(HLoadKeyedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), cp);
-  LOperand* object = UseFixed(instr->object(), a1);
-  LOperand* key = UseFixed(instr->key(), a0);
+  LOperand* object = UseFixed(instr->object(), KeyedLoadIC::ReceiverRegister());
+  LOperand* key = UseFixed(instr->key(), KeyedLoadIC::NameRegister());
 
   LInstruction* result =
       DefineFixed(new(zone()) LLoadKeyedGeneric(context, object, key), v0);