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

src/mips64/macro-assembler-mips64.h

Index: src/mips64/macro-assembler-mips64.h
diff --git a/src/mips64/macro-assembler-mips64.h b/src/mips64/macro-assembler-mips64.h
index dc22eff0d40ed31e1d1eb0f861589a1cdd8ab2a0..7de3300908aae95cfb1f64158f854fe00fa2f3a0 100644
--- a/src/mips64/macro-assembler-mips64.h
+++ b/src/mips64/macro-assembler-mips64.h
@@ -1203,7 +1203,7 @@ class MacroAssembler: public Assembler {
 
   void AdduAndCheckForOverflow(Register dst, Register left,
                                const Operand& right, Register overflow_dst,
-                               Register scratch = at);
+                               Register scratch);
 
   void SubuAndCheckForOverflow(Register dst,
                                Register left,
@@ -1213,7 +1213,21 @@ class MacroAssembler: public Assembler {
 
   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,