MIPS: Use shift and add instead of mul on ARM for integer hash.

src/mips/macro-assembler-mips.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 426 matching lines @@
 
   // hash = hash + (hash << 2);
   sll(at, reg0, 2);
   addu(reg0, reg0, at);
 
   // hash = hash ^ (hash >> 4);
   srl(at, reg0, 4);
   xor_(reg0, reg0, at);
 
   // hash = hash * 2057;
-  li(scratch, Operand(2057));
-  mul(reg0, reg0, scratch);
+  sll(scratch, reg0, 11);
+  sll(at, reg0, 3);
+  addu(reg0, reg0, at);
+  addu(reg0, reg0, scratch);
 
   // hash = hash ^ (hash >> 16);
   srl(at, reg0, 16);
   xor_(reg0, reg0, at);
 }
 
 
 void MacroAssembler::LoadFromNumberDictionary(Label* miss,
                                               Register elements,
                                               Register key,
@@ skipping 4586 matching lines @@
        opcode == BGTZL);
   opcode = (cond == eq) ? BEQ : BNE;
   instr = (instr & ~kOpcodeMask) | opcode;
   masm_.emit(instr);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS