S390 [Crankshaft]: Use LoadPositive for MathAbs

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 356 matching lines @@
   void LoadAndTestP(Register dst, const MemOperand& opnd);
 
   // Load Floating Point
   void LoadDouble(DoubleRegister dst, const MemOperand& opnd);
   void LoadFloat32(DoubleRegister dst, const MemOperand& opnd);
   void LoadFloat32ConvertToDouble(DoubleRegister dst, const MemOperand& mem);
 
   // Load On Condition
   void LoadOnConditionP(Condition cond, Register dst, Register src);
 
+  void LoadPositiveP(Register result, Register input);
+  void LoadPositive32(Register result, Register input);
+
   // Store Floating Point
   void StoreDouble(DoubleRegister dst, const MemOperand& opnd);
   void StoreFloat32(DoubleRegister dst, const MemOperand& opnd);
   void StoreDoubleAsFloat32(DoubleRegister src, const MemOperand& mem,
                             DoubleRegister scratch);
 
   void Branch(Condition c, const Operand& opnd);
   void BranchOnCount(Register r1, Label* l);
 
   // Shifts
@@ skipping 1423 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_