A64: Bug fix in LCodeGen::DoMathFloorOfDiv.

src/a64/lithium-codegen-a64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
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@@ skipping 3714 matching lines @@
   // execute it already now.
   __ Sdiv(result, left, right);
 
   // Check for x / 0.
   DeoptimizeIfZero(right, instr->environment());
 
   // Check for (kMinInt / -1).
   if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) {
     // The V flag will be set iff left == kMinInt.
     __ Cmp(left, 1);
-    __ Ccmp(right, -1, ZFlag, vs);
+    __ Ccmp(right, -1, NoFlag, vs);
     DeoptimizeIf(eq, instr->environment());
   }
 
   // Check for (0 / -x) that will produce negative zero.
   if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) {
     __ Cmp(right, 0);
     __ Ccmp(left, 0, ZFlag, mi);
     // "right" can't be null because the code would have already been
     // deoptimized. The Z flag is set only if (right < 0) and (left == 0).
     // In this case we need to deoptimize to produce a -0.
@@ skipping 1723 matching lines @@
   __ Bind(&out_of_object);
   __ Ldr(result, FieldMemOperand(object, JSObject::kPropertiesOffset));
   // Index is equal to negated out of object property index plus 1.
   __ Sub(result, result, Operand::UntagSmiAndScale(index, kPointerSizeLog2));
   __ Ldr(result, FieldMemOperand(result,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ Bind(&done);
 }
 
 } }  // namespace v8::internal