MIPS: Reland "Handle non-power-of-2 divisors in division-like operations".

src/mips/macro-assembler-mips.h

 // 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 1286 matching lines @@
     int pc;
     uint32_t flags;  // See Bootstrapper::FixupFlags decoders/encoders.
     const char* name;
   };
 
   Handle<Object> CodeObject() {
     ASSERT(!code_object_.is_null());
     return code_object_;
   }
 
+  // Emit code for a flooring division by a constant. The dividend register is
+  // unchanged and ip gets clobbered. Dividend and result must be different.

[Paul Lind, 2014/03/10 19:45:56]

nit: reg name should be at

+  void FlooringDiv(Register result, Register dividend, int32_t divisor);
+
   // -------------------------------------------------------------------------
   // StatsCounter support.
 
   void SetCounter(StatsCounter* counter, int value,
                   Register scratch1, Register scratch2);
   void IncrementCounter(StatsCounter* counter, int value,
                         Register scratch1, Register scratch2);
   void DecrementCounter(StatsCounter* counter, int value,
                         Register scratch1, Register scratch2);
 
@@ skipping 348 matching lines @@
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_MIPS_MACRO_ASSEMBLER_MIPS_H_