MIPS: Tweak StoreKeyed.

src/mips/lithium-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2107 matching lines @@
   LOperand* object = UseFixed(instr->object(), a1);
   LOperand* key = UseFixed(instr->key(), a0);
 
   LInstruction* result =
       DefineFixed(new(zone()) LLoadKeyedGeneric(object, key), v0);
   return MarkAsCall(result, instr);
 }
 
 
 LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) {
-  ElementsKind elements_kind = instr->elements_kind();
-
   if (!instr->is_external()) {
     ASSERT(instr->elements()->representation().IsTagged());
     bool needs_write_barrier = instr->NeedsWriteBarrier();
     LOperand* object = NULL;
     LOperand* val = NULL;
     LOperand* key = NULL;
 
     if (instr->value()->representation().IsDouble()) {
       object = UseRegisterAtStart(instr->elements());
       key = UseRegisterOrConstantAtStart(instr->key());
-      val = UseTempRegister(instr->value());
+      val = UseRegister(instr->value());
     } else {
       ASSERT(instr->value()->representation().IsSmiOrTagged());
-      object = UseTempRegister(instr->elements());
-      val = needs_write_barrier ? UseTempRegister(instr->value())
-          : UseRegisterAtStart(instr->value());
-      key = needs_write_barrier ? UseTempRegister(instr->key())
-          : UseRegisterOrConstantAtStart(instr->key());
+      if (needs_write_barrier) {
+        object = UseTempRegister(instr->elements());
+        val = UseTempRegister(instr->value());
+        key = UseTempRegister(instr->key());
+      } else {
+        object = UseRegisterAtStart(instr->elements());
+        val = UseRegisterAtStart(instr->value());
+        key = UseRegisterOrConstantAtStart(instr->key());
+      }
     }
 
     return new(zone()) LStoreKeyed(object, key, val);
   }
 
   ASSERT(
       (instr->value()->representation().IsInteger32() &&
-       (elements_kind != EXTERNAL_FLOAT_ELEMENTS) &&
-       (elements_kind != EXTERNAL_DOUBLE_ELEMENTS)) ||
+       (instr->elements_kind() != EXTERNAL_FLOAT_ELEMENTS) &&
+       (instr->elements_kind() != EXTERNAL_DOUBLE_ELEMENTS)) ||
       (instr->value()->representation().IsDouble() &&
-       ((elements_kind == EXTERNAL_FLOAT_ELEMENTS) ||
-        (elements_kind == EXTERNAL_DOUBLE_ELEMENTS))));
+       ((instr->elements_kind() == EXTERNAL_FLOAT_ELEMENTS) ||
+        (instr->elements_kind() == EXTERNAL_DOUBLE_ELEMENTS))));
   ASSERT(instr->elements()->representation().IsExternal());
-  bool val_is_temp_register =
-      elements_kind == EXTERNAL_PIXEL_ELEMENTS ||
-      elements_kind == EXTERNAL_FLOAT_ELEMENTS;
-  LOperand* val = val_is_temp_register ? UseTempRegister(instr->value())
-      : UseRegister(instr->value());
+  LOperand* val = UseRegister(instr->value());
   LOperand* key = UseRegisterOrConstantAtStart(instr->key());
   LOperand* external_pointer = UseRegister(instr->elements());
 
   return new(zone()) LStoreKeyed(external_pointer, key, val);
 }
 
 
 LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) {
   LOperand* obj = UseFixed(instr->object(), a2);
   LOperand* key = UseFixed(instr->key(), a1);
@@ skipping 325 matching lines @@
 
 
 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) {
   LOperand* object = UseRegister(instr->object());
   LOperand* index = UseRegister(instr->index());
   return DefineAsRegister(new(zone()) LLoadFieldByIndex(object, index));
 }
 
 
 } }  // namespace v8::internal