Inline Doubles truncate and round.

runtime/vm/assembler_ia32.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ASSEMBLER_IA32_H_
 #define VM_ASSEMBLER_IA32_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_ia32.h directly; use assembler.h instead.
 #endif
@@ skipping 382 matching lines @@
   void andpd(XmmRegister dst, XmmRegister src);
 
   void orpd(XmmRegister dst, XmmRegister src);
 
   void pextrd(Register dst, XmmRegister src, const Immediate& imm);
   void pmovsxdq(XmmRegister dst, XmmRegister src);
   void pcmpeqq(XmmRegister dst, XmmRegister src);
 
   void pxor(XmmRegister dst, XmmRegister src);
 
+  enum RoundingMode {
+    kRoundToNearest = 0x0,
+    kRoundDown      = 0x1,
+    kRoundUp        = 0x2,
+    kRoundToZero    = 0x3
+  };
+  void roundsd(XmmRegister dst, XmmRegister src, RoundingMode mode);
+
   void flds(const Address& src);
   void fstps(const Address& dst);
 
   void fldl(const Address& src);
   void fstpl(const Address& dst);
 
   void fnstcw(const Address& dst);
   void fldcw(const Address& src);
 
   void fistpl(const Address& dst);
@@ skipping 141 matching lines @@
                                 const Object& value);
 
   void TraceStoreIntoObject(Register object,
                             const FieldAddress& dest,
                             Register value);
 
   void DoubleNegate(XmmRegister d);
   void FloatNegate(XmmRegister f);
 
   void DoubleAbs(XmmRegister reg);
+  void DoubleRound(XmmRegister dst, XmmRegister src, XmmRegister tmp);
 
   void LockCmpxchgl(const Address& address, Register reg) {
     lock();
     cmpxchgl(address, reg);
   }
 
   void EnterFrame(intptr_t frame_space);
   void LeaveFrame();
   void ReserveAlignedFrameSpace(intptr_t frame_space);
 
@@ skipping 126 matching lines @@
 }
 
 
 inline void Assembler::EmitOperandSizeOverride() {
   EmitUint8(0x66);
 }
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_IA32_H_