S390: Decouple Add/Sub/Neg to 32/64 Bit Op

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 335 matching lines @@
   void LoadAndTestP(Register dst, Register src);
 
   void LoadAndTest32(Register dst, const MemOperand& opnd);
   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);
+
   // 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 853 matching lines @@
   void TruncateHeapNumberToI(Register result, Register object);
 
   // Converts the smi or heap number in object to an int32 using the rules
   // for ToInt32 as described in ECMAScript 9.5.: the value is truncated
   // and brought into the range -2^31 .. +2^31 - 1. 'result' and 'input' must be
   // different registers.
   void TruncateNumberToI(Register object, Register result,
                          Register heap_number_map, Register scratch1,
                          Label* not_int32);
 
-  // Overflow handling functions.
-  // Usage: call the appropriate arithmetic function and then call one of the
-  // flow control functions with the corresponding label.
-
-  // Compute dst = left + right, setting condition codes. dst may be same as
-  // either left or right (or a unique register). left and right must not be
-  // the same register.
-  void AddAndCheckForOverflow(Register dst, Register left, Register right,
-                              Register overflow_dst, Register scratch = r0);
-  void AddAndCheckForOverflow(Register dst, Register left, intptr_t right,
-                              Register overflow_dst, Register scratch = r0);
-
-  // Compute dst = left - right, setting condition codes. dst may be same as
-  // either left or right (or a unique register). left and right must not be
-  // the same register.
-  void SubAndCheckForOverflow(Register dst, Register left, Register right,
-                              Register overflow_dst, Register scratch = r0);
-
-  void BranchOnOverflow(Label* label) { blt(label /*, cr0*/); }
-
-  void BranchOnNoOverflow(Label* label) { bge(label /*, cr0*/); }
-
-  void RetOnOverflow(void) {
-    Label label;
-
-    blt(&label /*, cr0*/);
-    Ret();
-    bind(&label);
-  }
-
-  void RetOnNoOverflow(void) {
-    Label label;
-
-    bge(&label /*, cr0*/);
-    Ret();
-    bind(&label);
-  }
-
   // ---------------------------------------------------------------------------
   // Runtime calls
 
   // Call a code stub.
   void CallStub(CodeStub* stub, TypeFeedbackId ast_id = TypeFeedbackId::None(),
                 Condition cond = al);
 
   // Call a code stub.
   void TailCallStub(CodeStub* stub, Condition cond = al);
 
@@ skipping 633 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_