Subzero. Implements x86-64 lowerCall.

src/IceTargetLoweringX8664Traits.h

 //===- subzero/src/IceTargetLoweringX8664Traits.h - x86-64 traits -*- C++ -*-=//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 421 matching lines @@
             Str << " ";
           First = false;
           Str << getRegName(Register, IceType_i32);
         }
         Str << "}\n";
       }
     }
   }
 
   /// The maximum number of arguments to pass in XMM registers
-  static const uint32_t X86_MAX_XMM_ARGS = 4;
+  static const uint32_t X86_MAX_XMM_ARGS = 8;
+  /// The maximum number of arguments to pass in GPR registers
+  static const uint32_t X86_MAX_GPR_ARGS = 6;
   /// The number of bits in a byte
   static const uint32_t X86_CHAR_BIT = 8;
   /// Stack alignment. This is defined in IceTargetLoweringX8664.cpp because it
   /// is used as an argument to std::max(), and the default std::less<T> has an
   /// operator(T const&, T const&) which requires this member to have an
   /// address.
   static const uint32_t X86_STACK_ALIGNMENT_BYTES;
   /// Size of the return address on the stack
   static const uint32_t X86_RET_IP_SIZE_BYTES = 4;
   /// The number of different NOP instructions
@@ skipping 254 matching lines @@
 
 } // end of namespace X86Internal
 
 namespace X8664 {
 using Traits = ::Ice::X86Internal::MachineTraits<TargetX8664>;
 } // end of namespace X8664
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGX8664TRAITS_H