Version 3.19.17.

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 d4f450e5c4ce60be2cdaaeb3a6e961223055ac57..ad39c618eaf7a504c35b53176717b0f7aa30d8db 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -933,7 +933,7 @@ LEnvironment* LChunkBuilder::CreateEnvironment(
   BailoutId ast_id = hydrogen_env->ast_id();
   ASSERT(!ast_id.IsNone() ||
          hydrogen_env->frame_type() != JS_FUNCTION);
-  int value_count = hydrogen_env->length() - hydrogen_env->specials_count();
+  int value_count = hydrogen_env->length();
   LEnvironment* result = new(zone()) LEnvironment(
       hydrogen_env->closure(),
       hydrogen_env->frame_type(),
@@ -944,15 +944,13 @@ LEnvironment* LChunkBuilder::CreateEnvironment(
       outer,
       hydrogen_env->entry(),
       zone());
-  bool needs_arguments_object_materialization = false;
   int argument_index = *argument_index_accumulator;
-  for (int i = 0; i < hydrogen_env->length(); ++i) {
+  for (int i = 0; i < value_count; ++i) {
     if (hydrogen_env->is_special_index(i)) continue;
 
     HValue* value = hydrogen_env->values()->at(i);
     LOperand* op = NULL;
     if (value->IsArgumentsObject()) {
-      needs_arguments_object_materialization = true;
       op = NULL;
     } else if (value->IsPushArgument()) {
       op = new(zone()) LArgument(argument_index++);
@@ -964,21 +962,6 @@ LEnvironment* LChunkBuilder::CreateEnvironment(
                      value->CheckFlag(HInstruction::kUint32));
   }
 
-  if (needs_arguments_object_materialization) {
-    HArgumentsObject* arguments = hydrogen_env->entry() == NULL
-        ? graph()->GetArgumentsObject()
-        : hydrogen_env->entry()->arguments_object();
-    ASSERT(arguments->IsLinked());
-    for (int i = 1; i < arguments->arguments_count(); ++i) {
-      HValue* value = arguments->arguments_values()->at(i);
-      ASSERT(!value->IsArgumentsObject() && !value->IsPushArgument());
-      LOperand* op = UseAny(value);
-      result->AddValue(op,
-                       value->representation(),
-                       value->CheckFlag(HInstruction::kUint32));
-    }
-  }
-
   if (hydrogen_env->frame_type() == JS_FUNCTION) {
     *argument_index_accumulator = argument_index;
   }
@@ -1359,10 +1342,15 @@ LInstruction* LChunkBuilder::DoDiv(HDiv* instr) {
   if (instr->representation().IsDouble()) {
     return DoArithmeticD(Token::DIV, instr);
   } else if (instr->representation().IsInteger32()) {
-    LOperand* dividend = UseRegister(instr->left());
-    LOperand* divisor = UseRegister(instr->right());
-    LDivI* div = new(zone()) LDivI(dividend, divisor);
-    return AssignEnvironment(DefineAsRegister(div));
+    // TODO(1042) The fixed register allocation
+    // is needed because we call TypeRecordingBinaryOpStub from
+    // the generated code, which requires registers a0
+    // and a1 to be used. We should remove that
+    // when we provide a native implementation.
+    LOperand* dividend = UseFixed(instr->left(), a0);
+    LOperand* divisor = UseFixed(instr->right(), a1);
+    return AssignEnvironment(AssignPointerMap(
+             DefineFixed(new(zone()) LDivI(dividend, divisor), v0)));
   } else {
     return DoArithmeticT(Token::DIV, instr);
   }