[turbofan] Add the RoundInt32ToFloat32 operator to turbofan.

src/x64/assembler-x64.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 1007 matching lines @@
   // Use movaps when moving float values and movd for integer
   // values in xmm registers.
   void movss(XMMRegister dst, XMMRegister src);
 
   void movss(XMMRegister dst, const Operand& src);
   void movss(const Operand& dst, XMMRegister src);
   void shufps(XMMRegister dst, XMMRegister src, byte imm8);
 
   void cvttss2si(Register dst, const Operand& src);
   void cvttss2si(Register dst, XMMRegister src);
+  void cvtlsi2ss(XMMRegister dst, const Operand& src);
   void cvtlsi2ss(XMMRegister dst, Register src);
 
   void andps(XMMRegister dst, XMMRegister src);
   void andps(XMMRegister dst, const Operand& src);
   void orps(XMMRegister dst, XMMRegister src);
   void orps(XMMRegister dst, const Operand& src);
   void xorps(XMMRegister dst, XMMRegister src);
   void xorps(XMMRegister dst, const Operand& src);
 
   void addps(XMMRegister dst, XMMRegister src);
@@ skipping 325 matching lines @@
   void vcvtss2sd(XMMRegister dst, XMMRegister src1, const Operand& src2) {
     vsd(0x5a, dst, src1, src2, kF3, k0F, kWIG);
   }
   void vcvtlsi2sd(XMMRegister dst, XMMRegister src1, Register src2) {
     XMMRegister isrc2 = {src2.code()};
     vsd(0x2a, dst, src1, isrc2, kF2, k0F, kW0);
   }
   void vcvtlsi2sd(XMMRegister dst, XMMRegister src1, const Operand& src2) {
     vsd(0x2a, dst, src1, src2, kF2, k0F, kW0);
   }
+  void vcvtlsi2ss(XMMRegister dst, XMMRegister src1, Register src2) {
+    XMMRegister isrc2 = {src2.code()};
+    vsd(0x2a, dst, src1, isrc2, kF3, k0F, kW0);
+  }
+  void vcvtlsi2ss(XMMRegister dst, XMMRegister src1, const Operand& src2) {
+    vsd(0x2a, dst, src1, src2, kF3, k0F, kW0);
+  }
   void vcvtqsi2ss(XMMRegister dst, XMMRegister src1, Register src2) {
     XMMRegister isrc2 = {src2.code()};
     vsd(0x2a, dst, src1, isrc2, kF3, k0F, kW1);
   }
   void vcvtqsi2ss(XMMRegister dst, XMMRegister src1, const Operand& src2) {
     vsd(0x2a, dst, src1, src2, kF3, k0F, kW1);
   }
   void vcvtqsi2sd(XMMRegister dst, XMMRegister src1, Register src2) {
     XMMRegister isrc2 = {src2.code()};
     vsd(0x2a, dst, src1, isrc2, kF2, k0F, kW1);
@@ skipping 806 matching lines @@
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_X64_ASSEMBLER_X64_H_