Subzero: Make -reg-use and -reg-exclude specific to register class.

src/IceTargetLoweringMIPS32.cpp

 //===- subzero/src/IceTargetLoweringMIPS32.cpp - MIPS32 lowering ----------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 88 matching lines @@
   TypeToRegisterSet[IceType_f64] = Float64Registers;
   TypeToRegisterSet[IceType_v4i1] = VectorRegisters;
   TypeToRegisterSet[IceType_v8i1] = VectorRegisters;
   TypeToRegisterSet[IceType_v16i1] = VectorRegisters;
   TypeToRegisterSet[IceType_v16i8] = VectorRegisters;
   TypeToRegisterSet[IceType_v8i16] = VectorRegisters;
   TypeToRegisterSet[IceType_v4i32] = VectorRegisters;
   TypeToRegisterSet[IceType_v4f32] = VectorRegisters;
 
   filterTypeToRegisterSet(Ctx, RegMIPS32::Reg_NUM, TypeToRegisterSet,
-                          RCMIPS32_NUM, [](int32_t RegNum) -> IceString {
-                            return RegMIPS32::getRegName(RegNum);
-                          });
+                          RCMIPS32_NUM, RegMIPS32::getRegName, regClassString);

[Karl, 2016/01/22 17:10:54]

Like in the ARM case, I would add an assert here. That way if an RC class is
added, a compiler error will be generated and the developer will know to fix the
class string.

[Jim Stichnoth, 2016/01/22 19:02:17]

Done.

 }
 
 void TargetMIPS32::translateO2() {
   TimerMarker T(TimerStack::TT_O2, Func);
 
   // TODO(stichnot): share passes with X86?
   // https://code.google.com/p/nativeclient/issues/detail?id=4094
   genTargetHelperCalls();
 
   // Merge Alloca instructions, and lay out the stack.
@@ skipping 991 matching lines @@
       << "nomicromips\n";
   Str << "\t.set\t"
       << "nomips16\n";
 }
 
 llvm::SmallBitVector TargetMIPS32::TypeToRegisterSet[IceType_NUM];
 llvm::SmallBitVector TargetMIPS32::RegisterAliases[RegMIPS32::Reg_NUM];
 
 } // end of namespace MIPS32
 } // end of namespace Ice