Add inlining of binary smi operations in the full codegens on IA32...

src/full-codegen.h

 // Copyright 2010 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 219 matching lines @@
    private:
     static const int kForInStackElementCount = 5;
     DISALLOW_COPY_AND_ASSIGN(ForIn);
   };
 
   enum Location {
     kAccumulator,
     kStack
   };
 
+  enum ConstantOperand {
+    kNoConstants,
+    kLeftConstant,
+    kRightConstant
+  };
+
   // Compute the frame pointer relative offset for a given local or
   // parameter slot.
   int SlotOffset(Slot* slot);
 
   // Determine whether or not to inline the smi case for the given
   // operation.
   bool ShouldInlineSmiCase(Token::Value op);
 
+  // Compute which (if any) of the operands is a compile-time constant.
+  ConstantOperand GetConstantOperand(Token::Value op,
+                                     Expression* left,
+                                     Expression* right);
+
   // Emit code to convert a pure value (in a register, slot, as a literal,
   // or on top of the stack) into the result expected according to an
   // expression context.
   void Apply(Expression::Context context, Register reg);
 
   // Slot cannot have type Slot::LOOKUP.
   void Apply(Expression::Context context, Slot* slot);
 
   void Apply(Expression::Context context, Literal* lit);
   void ApplyTOS(Expression::Context context);
@@ skipping 96 matching lines @@
                        FunctionLiteral* function);
 
   // Platform-specific return sequence
   void EmitReturnSequence();
 
   // Platform-specific code sequences for calls
   void EmitCallWithStub(Call* expr);
   void EmitCallWithIC(Call* expr, Handle<Object> name, RelocInfo::Mode mode);
   void EmitKeyedCallWithIC(Call* expr, Expression* key, RelocInfo::Mode mode);
 
-
   // Platform-specific code for inline runtime calls.
   void EmitInlineRuntimeCall(CallRuntime* expr);
 
 #define EMIT_INLINE_RUNTIME_CALL(name, x, y) \
   void Emit##name(ZoneList<Expression*>* arguments);
   INLINE_RUNTIME_FUNCTION_LIST(EMIT_INLINE_RUNTIME_CALL)
 #undef EMIT_INLINE_RUNTIME_CALL
 
   // Platform-specific code for loading variables.
   void EmitVariableLoad(Variable* expr, Expression::Context context);
@@ skipping 11 matching lines @@
   // Load a value from a keyed property.
   // The receiver and the key is left on the stack by the IC.
   void EmitKeyedPropertyLoad(Property* expr);
 
   // Apply the compound assignment operator. Expects the left operand on top
   // of the stack and the right one in the accumulator.
   void EmitBinaryOp(Token::Value op,
                     Expression::Context context,
                     OverwriteMode mode);
 
+  // Helper functions for generating inlined smi code for certain
+  // binary operations.
+  void EmitInlineSmiBinaryOp(Expression* expr,
+                             Token::Value op,
+                             Expression::Context context,
+                             OverwriteMode mode,
+                             Expression* left,
+                             Expression* right,
+                             ConstantOperand constant);
+
+  void EmitConstantSmiBinaryOp(Expression* expr,
+                               Token::Value op,
+                               Expression::Context context,
+                               OverwriteMode mode,
+                               bool left_is_constant_smi,
+                               Smi* value);
+
+  void EmitConstantSmiBitOp(Expression* expr,
+                            Token::Value op,
+                            Expression::Context context,
+                            OverwriteMode mode,
+                            Smi* value);
+
+  void EmitConstantSmiShiftOp(Expression* expr,
+                              Token::Value op,
+                              Expression::Context context,
+                              OverwriteMode mode,
+                              Smi* value);
+
+  void EmitConstantSmiAdd(Expression* expr,
+                          Expression::Context context,
+                          OverwriteMode mode,
+                          bool left_is_constant_smi,
+                          Smi* value);
+
+  void EmitConstantSmiSub(Expression* expr,
+                          Expression::Context context,
+                          OverwriteMode mode,
+                          bool left_is_constant_smi,
+                          Smi* value);
+
   // Assign to the given expression as if via '='. The right-hand-side value
   // is expected in the accumulator.
   void EmitAssignment(Expression* expr);
 
   // Complete a variable assignment.  The right-hand-side value is expected
   // in the accumulator.
   void EmitVariableAssignment(Variable* var,
                               Token::Value op,
                               Expression::Context context);
 
@@ skipping 73 matching lines @@
 
   friend class NestedStatement;
 
   DISALLOW_COPY_AND_ASSIGN(FullCodeGenerator);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FULL_CODEGEN_H_