Move ToI conversions to the MacroAssembler

src/ia32/macro-assembler-ia32.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 451 matching lines @@
   // FCmp is similar to integer cmp, but requires unsigned
   // jcc instructions (je, ja, jae, jb, jbe, je, and jz).
   void FCmp();
 
   void ClampUint8(Register reg);
 
   void ClampDoubleToUint8(XMMRegister input_reg,
                           XMMRegister scratch_reg,
                           Register result_reg);
 
+  void SlowTruncateToI(Register input_reg, Register result_reg,
+      int index = HeapNumber::kValueOffset - kHeapObjectTag);
+
+  void TruncateHeapNumberToI(Register input_reg, Register result_reg);
+  void TruncateDoubleToI(XMMRegister input_reg, Register result_reg);
+
+  void DoubleToI(XMMRegister input_reg, Register result_reg,
+      XMMRegister scratch, bool bailout_on_minus_zero,
+      Label* conversion_failed, Label::Distance dst = Label::kFar);
+
+  void TaggedToI(Register input_reg, Register result_reg, XMMRegister temp,
+      bool bailout_on_minus_zero, Label* bailout);
+  void TaggedToI(Register input_reg, Register result_reg,

[danno, 2013/08/13 13:04:20]

I think it's better to not have this second version at all. Callers should be
forced to think about whether they are passing a temp register or not.

+      bool bailout_on_minus_zero, Label* bailout) {
+    TaggedToI(input_reg, result_reg, no_xmm_reg,
+              bailout_on_minus_zero, bailout);
+  }
 
   // Smi tagging support.
   void SmiTag(Register reg) {
     STATIC_ASSERT(kSmiTag == 0);
     STATIC_ASSERT(kSmiTagSize == 1);
     add(reg, reg);
   }
   void SmiUntag(Register reg) {
     sar(reg, kSmiTagSize);
   }
@@ skipping 573 matching lines @@
   }                                                                       \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_MACRO_ASSEMBLER_IA32_H_