Added infrastructure for optimizing new CanvasArray types in WebGL...

src/x64/macro-assembler-x64.h

 // Copyright 2009 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 189 matching lines @@
 
   // Is the value the minimum smi value (since we are using
   // two's complement numbers, negating the value is known to yield
   // a non-smi value).
   Condition CheckIsMinSmi(Register src);
 
   // Checks whether an 32-bit integer value is a valid for conversion
   // to a smi.
   Condition CheckInteger32ValidSmiValue(Register src);
 
+  // Checks whether an 32-bit unsigned integer value is a valid for
+  // conversion to a smi.
+  Condition CheckUInteger32ValidSmiValue(Register src);
+
   // Test-and-jump functions. Typically combines a check function
   // above with a conditional jump.
 
   // Jump if the value cannot be represented by a smi.
   void JumpIfNotValidSmiValue(Register src, Label* on_invalid);
 
+  // Jump if the unsigned integer value cannot be represented by a smi.
+  void JumpIfUIntNotValidSmiValue(Register src, Label* on_invalid);
+
   // Jump to label if the value is a tagged smi.
   void JumpIfSmi(Register src, Label* on_smi);
 
   // Jump to label if the value is not a tagged smi.
   void JumpIfNotSmi(Register src, Label* on_not_smi);
 
   // Jump to label if the value is not a positive tagged smi.
   void JumpIfNotPositiveSmi(Register src, Label* on_not_smi);
 
   // Jump to label if the value, which must be a tagged smi, has value equal
@@ skipping 265 matching lines @@
                           Register scratch,
                           Label* gc_required,
                           AllocationFlags flags);
 
   // Undo allocation in new space. The object passed and objects allocated after
   // it will no longer be allocated. Make sure that no pointers are left to the
   // object(s) no longer allocated as they would be invalid when allocation is
   // un-done.
   void UndoAllocationInNewSpace(Register object);
 
+  // Allocate a heap number in new space with undefined value. Returns
+  // tagged pointer in result register, or jumps to gc_required if new
+  // space is full.
+  void AllocateHeapNumber(Register result,
+                          Register scratch,
+                          Label* gc_required);
+
   // ---------------------------------------------------------------------------
   // Support functions.
 
   // Check if result is zero and op is negative.
   void NegativeZeroTest(Register result, Register op, Label* then_label);
 
   // Check if result is zero and op is negative in code using jump targets.
   void NegativeZeroTest(CodeGenerator* cgen,
                         Register result,
                         Register op,
@@ skipping 182 matching lines @@
   }                                                                       \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_MACRO_ASSEMBLER_X64_H_