Experimental implementation: Exposing SIMD instructions into JavaScript

src/lithium-allocator.h

 // Copyright 2012 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 130 matching lines @@
 
   explicit LifetimePosition(int value) : value_(value) { }
 
   int value_;
 };
 
 
 enum RegisterKind {
   UNALLOCATED_REGISTERS,
   GENERAL_REGISTERS,
-  DOUBLE_REGISTERS
+  DOUBLE_REGISTERS,
+  FLOAT32x4_REGISTERS,
+  INT32x4_REGISTERS
 };
 
 
 // A register-allocator view of a Lithium instruction. It contains the id of
 // the output operand and a list of input operand uses.
 
 class LInstruction;
 class LEnvironment;
 
 // Iterator for non-null temp operands.
@@ skipping 447 matching lines @@
 
   // Lists of live ranges
   EmbeddedVector<LiveRange*, Register::kMaxNumAllocatableRegisters>
       fixed_live_ranges_;
   EmbeddedVector<LiveRange*, DoubleRegister::kMaxNumAllocatableRegisters>
       fixed_double_live_ranges_;
   ZoneList<LiveRange*> unhandled_live_ranges_;
   ZoneList<LiveRange*> active_live_ranges_;
   ZoneList<LiveRange*> inactive_live_ranges_;
   ZoneList<LiveRange*> reusable_slots_;
+  // Slots reusable for both float32x4 and int32x4 register spilling.
+  ZoneList<LiveRange*> reusable_xmm_slots_;
 
   // Next virtual register number to be assigned to temporaries.
   int next_virtual_register_;
   int first_artificial_register_;
   GrowableBitVector double_artificial_registers_;
+  GrowableBitVector float32x4_artificial_registers_;
+  GrowableBitVector int32x4_artificial_registers_;
 
   RegisterKind mode_;
   int num_registers_;
 
   BitVector* assigned_registers_;
   BitVector* assigned_double_registers_;
 
   HGraph* graph_;
 
   bool has_osr_entry_;
@@ skipping 18 matching lines @@
   LAllocator* allocator_;
   unsigned allocator_zone_start_allocation_size_;
 
   DISALLOW_COPY_AND_ASSIGN(LAllocatorPhase);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_LITHIUM_ALLOCATOR_H_