MIPS: Remove ASSERT since there are tons of different ASSIGN variants

src/mips/full-codegen-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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
 // Note on Mips implementation:
 //
@@ skipping 2478 matching lines @@
     __ Branch(&assign, ne, a3, Operand(t0));
     __ li(a3, Operand(var->name()));
     __ push(a3);
     __ CallRuntime(Runtime::kThrowReferenceError, 1);
     // Perform the assignment.
     __ bind(&assign);
     EmitStoreToStackLocalOrContextSlot(var, location);
 
   } else if (!var->is_const_mode() || op == Token::INIT_CONST) {
     if (var->IsLookupSlot()) {
-      ASSERT(op == Token::ASSIGN || op == Token::INIT_VAR ||
-             op == Token::ASSIGN_ADD);
       // Assignment to var.
       __ li(a1, Operand(var->name()));
       __ li(a0, Operand(Smi::FromInt(strict_mode())));
       __ Push(v0, cp, a1, a0);  // Value, context, name, strict mode.
       __ CallRuntime(Runtime::kStoreLookupSlot, 4);
     } else {
       // Assignment to var or initializing assignment to let/const in harmony
       // mode.
       ASSERT((var->IsStackAllocated() || var->IsContextSlot()));
       MemOperand location = VarOperand(var, a1);
@@ skipping 2345 matching lines @@
       Assembler::target_address_at(pc_immediate_load_address)) ==
          reinterpret_cast<uint32_t>(
              isolate->builtins()->OsrAfterStackCheck()->entry()));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS