Merge r7683, r7685 from the bleeding_edge into 3.1 branch.

src/arm/code-stubs-arm.cc

 // Copyright 2011 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 3407 matching lines @@
         }
 
         // A DIV operation expecting an integer result falls through
         // to type transition.
 
       } else {
         // We preserved r0 and r1 to be able to call runtime.
         // Save the left value on the stack.
         __ Push(r5, r4);
 
+        Label pop_and_call_runtime;
+
         // Allocate a heap number to store the result.
         heap_number_result = r5;
         GenerateHeapResultAllocation(masm,
                                      heap_number_result,
                                      heap_number_map,
                                      scratch1,
                                      scratch2,
-                                     &call_runtime);
+                                     &pop_and_call_runtime);
 
         // Load the left value from the value saved on the stack.
         __ Pop(r1, r0);
 
         // Call the C function to handle the double operation.
         FloatingPointHelper::CallCCodeForDoubleOperation(
             masm, op_, heap_number_result, scratch1);
+
+        __ bind(&pop_and_call_runtime);
+        __ Drop(2);
+        __ b(&call_runtime);
       }
 
       break;
     }
 
     case Token::BIT_OR:
     case Token::BIT_XOR:
     case Token::BIT_AND:
     case Token::SAR:
     case Token::SHR:
@@ skipping 3357 matching lines @@
   __ strb(untagged_value, MemOperand(external_pointer, untagged_key));
   __ Ret();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM