Subzero: Transform suitable Load/Arith/Store sequences into RMW ops.

src/IceDefs.h

 //===- subzero/src/IceDefs.h - Common Subzero declaraions -------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares various useful types and classes that have
@@ skipping 155 matching lines @@
   IceV_InstNumbers = 1 << 2,
   IceV_Preds = 1 << 3,
   IceV_Succs = 1 << 4,
   IceV_Liveness = 1 << 5,
   IceV_RegOrigins = 1 << 6,
   IceV_LinearScan = 1 << 7,
   IceV_Frame = 1 << 8,
   IceV_AddrOpt = 1 << 9,
   IceV_Random = 1 << 10,
   IceV_Folding = 1 << 11,
+  IceV_RMW = 1 << 12,
   IceV_All = ~IceV_None,
   IceV_Most = IceV_All & ~IceV_LinearScan
 };
 typedef uint32_t VerboseMask;
 
 enum FileType {
   FT_Elf, // ELF .o file
   FT_Asm, // Assembly .s file
   FT_Iasm // "Integrated assembler" .byte-style .s file
 };
@@ skipping 34 matching lines @@
   return llvm::make_range(Container.rbegin(), Container.rend());
 }
 template <typename T>
 llvm::iterator_range<typename T::reverse_iterator> reverse_range(T &Container) {
   return llvm::make_range(Container.rbegin(), Container.rend());
 }
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEDEFS_H