MIPS64: Eliminate ABI-dependent definitions.

src/mips64/macro-assembler-mips64.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.
 
 #if V8_TARGET_ARCH_MIPS64
 
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
@@ skipping 4341 matching lines @@
     } else {
       Move(v1, v0, src);
     }
   }
 }
 
 
 void MacroAssembler::MovToFloatParameters(DoubleRegister src1,
                                           DoubleRegister src2) {
   if (!IsMipsSoftFloatABI) {
-    const DoubleRegister fparg2 = (kMipsAbi == kN64) ? f13 : f14;
+    const DoubleRegister fparg2 = f13;
     if (src2.is(f12)) {
       DCHECK(!src1.is(fparg2));
       Move(fparg2, src2);
       Move(f12, src1);
     } else {
       Move(f12, src1);
       Move(fparg2, src2);
     }
   } else {
     if (kArchEndian == kLittle) {
@@ skipping 1570 matching lines @@
                                                               Register scratch,
                                                               Label* failure) {
   const int kFlatOneByteStringMask =
       kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask;
   const int kFlatOneByteStringTag =
       kStringTag | kOneByteStringTag | kSeqStringTag;
   And(scratch, type, Operand(kFlatOneByteStringMask));
   Branch(failure, ne, scratch, Operand(kFlatOneByteStringTag));
 }
 
-
-static const int kRegisterPassedArguments = (kMipsAbi == kN64) ? 8 : 4;
+static const int kRegisterPassedArguments = 8;
 
 int MacroAssembler::CalculateStackPassedWords(int num_reg_arguments,
                                               int num_double_arguments) {
   int stack_passed_words = 0;
   num_reg_arguments += 2 * num_double_arguments;
 
   // O32: Up to four simple arguments are passed in registers a0..a3.
   // N64: Up to eight simple arguments are passed in registers a0..a7.
   if (num_reg_arguments > kRegisterPassedArguments) {
     stack_passed_words += num_reg_arguments - kRegisterPassedArguments;
@@ skipping 522 matching lines @@
   if (mag.shift > 0) sra(result, result, mag.shift);
   srl(at, dividend, 31);
   Addu(result, result, Operand(at));
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64