[mips] Fix MIPS/MIPS64 test failures after r31120.

src/mips/builtins-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_MIPS
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 40 matching lines @@
 
   // JumpToExternalReference expects a0 to contain the number of arguments
   // including the receiver and the extra arguments.  But a0 is only valid
   // if the called function is marked as DontAdaptArguments, otherwise we
   // need to load the argument count from the SharedFunctionInfo.
   Label argc, done_argc;
   __ lw(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
   __ lw(a2,
         FieldMemOperand(a2, SharedFunctionInfo::kFormalParameterCountOffset));
   __ SmiUntag(a2);
-  __ Branch(&argc, ne, a2,
+  __ Branch(&argc, eq, a2,
             Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel));
   __ Addu(a0, a2, num_extra_args + 1);
   __ jmp(&done_argc);
   __ bind(&argc);
   __ Addu(a0, a0, num_extra_args + 1);
   __ bind(&done_argc);
 
   __ JumpToExternalReference(ExternalReference(id, masm->isolate()));
 }
 
@@ skipping 1834 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS