Move ToInt conversions to the MacroAssembler for x64

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 8e30981833acff2e6caac0b8ddf2b0276d51c9de..09c8a800ccab1a4e3cdf06a7337dc0c2284b6efc 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -975,6 +975,20 @@ class MacroAssembler: public Assembler {
                           XMMRegister temp_xmm_reg,
                           Register result_reg);
 
+  void SlowTruncateToI(Register result_reg, Register input_reg,
+      int offset = HeapNumber::kValueOffset - kHeapObjectTag);
+
+  void TruncateHeapNumberToI(Register result_reg, Register input_reg);
+  void TruncateDoubleToI(Register result_reg, XMMRegister input_reg);
+
+  void DoubleToI(Register result_reg, XMMRegister input_reg,
+      XMMRegister scratch, MinusZeroMode minus_zero_mode,
+      Label* conversion_failed, Label::Distance dst = Label::kFar);
+
+  void TaggedToI(Register result_reg, Register input_reg, XMMRegister temp,
+      MinusZeroMode minus_zero_mode, Label* lost_precision,
+      Label::Distance dst = Label::kFar);
+
   void LoadUint32(XMMRegister dst, Register src, XMMRegister scratch);
 
   void LoadInstanceDescriptors(Register map, Register descriptors);