MIPS: Remove madd.d usage for r6.

src/mips/assembler-mips.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 2047 matching lines @@
 }
 
 
 void Assembler::mul_d(FPURegister fd, FPURegister fs, FPURegister ft) {
   GenInstrRegister(COP1, D, ft, fs, fd, MUL_D);
 }
 
 
 void Assembler::madd_d(FPURegister fd, FPURegister fr, FPURegister fs,
     FPURegister ft) {
+  DCHECK(IsMipsArchVariant(kMips32r2));
   GenInstrRegister(COP1X, fr, ft, fs, fd, MADD_D);
 }
 
 
 void Assembler::div_d(FPURegister fd, FPURegister fs, FPURegister ft) {
   GenInstrRegister(COP1, D, ft, fs, fd, DIV_D);
 }
 
 
 void Assembler::abs_d(FPURegister fd, FPURegister fs) {
@@ skipping 661 matching lines @@
 void Assembler::PopulateConstantPool(ConstantPoolArray* constant_pool) {
   // No out-of-line constant pool support.
   DCHECK(!FLAG_enable_ool_constant_pool);
   return;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS