MIPS: The check for internalized strings relied on the fact that we had less than 64 distinct Insta…

src/mips/macro-assembler-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 3184 matching lines @@
            TAG_OBJECT);
 
   InitializeNewString(result,
                       length,
                       Heap::kSlicedAsciiStringMapRootIndex,
                       scratch1,
                       scratch2);
 }
 
 
+void MacroAssembler::JumpIfNotUniqueName(Register reg,
+                                         Label* not_unique_name) {
+  STATIC_ASSERT(((SYMBOL_TYPE - 1) & kIsInternalizedMask) == kInternalizedTag);
+  Branch(not_unique_name, lt, reg, Operand(kIsInternalizedMask));
+  Branch(not_unique_name, gt, reg, Operand(SYMBOL_TYPE));
+}
+
+
 // Allocates a heap number or jumps to the label if the young space is full and
 // a scavenge is needed.
 void MacroAssembler::AllocateHeapNumber(Register result,
                                         Register scratch1,
                                         Register scratch2,
                                         Register heap_number_map,
                                         Label* need_gc,
                                         TaggingMode tagging_mode) {
   // Allocate an object in the heap for the heap number and tag it as a heap
   // object.
@@ skipping 2333 matching lines @@
        opcode == BGTZL);
   opcode = (cond == eq) ? BEQ : BNE;
   instr = (instr & ~kOpcodeMask) | opcode;
   masm_.emit(instr);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS