s390: optimize MathSqrt

src/s390/macro-assembler-s390.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_S390_MACRO_ASSEMBLER_S390_H_
 #define V8_S390_MACRO_ASSEMBLER_S390_H_
 
 #include "src/assembler.h"
 #include "src/bailout-reason.h"
 #include "src/frames.h"
@@ skipping 305 matching lines @@
   void Mul32(Register dst, const MemOperand& src1);
   void Mul32(Register dst, Register src1);
   void Mul32(Register dst, const Operand& src1);
   void Mul64(Register dst, const MemOperand& src1);
   void Mul64(Register dst, Register src1);
   void Mul64(Register dst, const Operand& src1);
 
   // Divide
   void DivP(Register dividend, Register divider);
 
+  // Square root
+  void Sqrt(DoubleRegister result, DoubleRegister input);
+  void Sqrt(DoubleRegister result, const MemOperand& input);
+
   // Compare
   void Cmp32(Register src1, Register src2);
   void CmpP(Register src1, Register src2);
   void Cmp32(Register dst, const Operand& opnd);
   void CmpP(Register dst, const Operand& opnd);
   void Cmp32(Register dst, const MemOperand& opnd);
   void CmpP(Register dst, const MemOperand& opnd);
 
   // Compare Logical
   void CmpLogical32(Register src1, Register src2);
@@ skipping 1479 matching lines @@
 inline MemOperand NativeContextMemOperand() {
   return ContextMemOperand(cp, Context::NATIVE_CONTEXT_INDEX);
 }
 
 #define ACCESS_MASM(masm) masm->
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_S390_MACRO_ASSEMBLER_S390_H_