MIPS: Fix unsigned comparison.

src/mips/macro-assembler-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 <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
@@ skipping 2096 matching lines @@
           li(r2, rt);
           slt(scratch, r2, rs);
           offset = shifted_branch_offset(L, false);
           beq(scratch, zero_reg, offset);
         }
         break;
       // Unsigned comparison.
       case Ugreater:
         if (rt.imm32_ == 0) {
           offset = shifted_branch_offset(L, false);
-          bgtz(rs, offset);
+          bne(rs, zero_reg, offset);
         } else {
           ASSERT(!scratch.is(rs));
           r2 = scratch;
           li(r2, rt);
           sltu(scratch, r2, rs);
           offset = shifted_branch_offset(L, false);
           bne(scratch, zero_reg, offset);
         }
         break;
       case Ugreater_equal:
@@ skipping 3628 matching lines @@
   }
   if (ms.shift() > 0) sra(result, result, ms.shift());
   srl(at, dividend, 31);
   Addu(result, result, Operand(at));
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS