Reland "MIPS64: Fix lithium arithmetic operations for integers to sign-extend result."

src/mips64/macro-assembler-mips64.h

 // Copyright 2012 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_MIPS_MACRO_ASSEMBLER_MIPS_H_
 #define V8_MIPS_MACRO_ASSEMBLER_MIPS_H_
 
 #include "src/assembler.h"
 #include "src/globals.h"
 #include "src/mips64/assembler-mips64.h"
@@ skipping 1185 matching lines @@
   // jump functions with the overflow_dst register as the second parameter.
 
   void AdduAndCheckForOverflow(Register dst,
                                Register left,
                                Register right,
                                Register overflow_dst,
                                Register scratch = at);
 
   void AdduAndCheckForOverflow(Register dst, Register left,
                                const Operand& right, Register overflow_dst,
-                               Register scratch = at);
+                               Register scratch);
 
   void SubuAndCheckForOverflow(Register dst,
                                Register left,
                                Register right,
                                Register overflow_dst,
                                Register scratch = at);
 
   void SubuAndCheckForOverflow(Register dst, Register left,
                                const Operand& right, Register overflow_dst,
-                               Register scratch = at);
+                               Register scratch);
+
+  void DadduAndCheckForOverflow(Register dst, Register left, Register right,
+                                Register overflow_dst, Register scratch = at);
+
+  void DadduAndCheckForOverflow(Register dst, Register left,
+                                const Operand& right, Register overflow_dst,
+                                Register scratch);
+
+  void DsubuAndCheckForOverflow(Register dst, Register left, Register right,
+                                Register overflow_dst, Register scratch = at);
+
+  void DsubuAndCheckForOverflow(Register dst, Register left,
+                                const Operand& right, Register overflow_dst,
+                                Register scratch);
 
   void BranchOnOverflow(Label* label,
                         Register overflow_check,
                         BranchDelaySlot bd = PROTECT) {
     Branch(label, lt, overflow_check, Operand(zero_reg), bd);
   }
 
   void BranchOnNoOverflow(Label* label,
                           Register overflow_check,
                           BranchDelaySlot bd = PROTECT) {
@@ skipping 584 matching lines @@
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_MIPS_MACRO_ASSEMBLER_MIPS_H_