Refine CountOperation of FullCodeGen

src/x64/macro-assembler-x64.h

Index: src/x64/macro-assembler-x64.h
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index 3d5a4560bb0227789e7092031bb0a35e12588b7e..ed216eb785a61ab374b9a4a1bb65c32fe14eb697 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -53,6 +53,22 @@ typedef Operand MemOperand;
 enum RememberedSetAction { EMIT_REMEMBERED_SET, OMIT_REMEMBERED_SET };
 enum SmiCheck { INLINE_SMI_CHECK, OMIT_SMI_CHECK };
 
+enum SmiOperationConstraint {
+  NEED_RESERVE_SOURCES,

[danno, 2013/10/14 18:30:45]

This should be PRESERVE_SOURCE_REGISTER

[haitao.feng, 2013/10/16 09:17:01]

Done.

+  BAILOUT_ON_NO_OVERFLOW,
+  BAILOUT_ON_OVERFLOW,
+  NUMBER_OF_CONSTRAINTS
+};
+
+STATIC_ASSERT(NUMBER_OF_CONSTRAINTS <= 8);
+
+class SmiOperationExecutionMode : public EnumSet<SmiOperationConstraint, byte> {
+ public:
+  SmiOperationExecutionMode() : EnumSet<SmiOperationConstraint, byte>(0) { }
+  explicit SmiOperationExecutionMode(byte bits)
+      : EnumSet<SmiOperationConstraint, byte>(bits) { }
+};
+
 bool AreAliased(Register r1, Register r2, Register r3, Register r4);
 
 // Forward declaration.
@@ -558,7 +574,8 @@ class MacroAssembler: public Assembler {
   void SmiSubConstant(Register dst,
                       Register src,
                       Smi* constant,
-                      Label* on_not_smi_result,
+                      SmiOperationExecutionMode mode,
+                      Label* bailout_label,
                       Label::Distance near_jump = Label::kFar);
 
   // Negating a smi can give a negative zero or too large positive value.