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

src/mips64/full-codegen-mips64.cc

 // 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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS64
 
 // Note on Mips implementation:
 //
@@ skipping 2469 matching lines @@
     case Token::SHR: {
       __ SmiUntag(scratch1, left);
       __ GetLeastBitsFromSmi(scratch2, right, 5);
       __ dsrlv(scratch1, scratch1, scratch2);
       __ And(scratch2, scratch1, 0x80000000);
       __ Branch(&stub_call, ne, scratch2, Operand(zero_reg));
       __ SmiTag(v0, scratch1);
       break;
     }
     case Token::ADD:
-      __ AdduAndCheckForOverflow(v0, left, right, scratch1);
+      __ DadduAndCheckForOverflow(v0, left, right, scratch1);
       __ BranchOnOverflow(&stub_call, scratch1);
       break;
     case Token::SUB:
-      __ SubuAndCheckForOverflow(v0, left, right, scratch1);
+      __ DsubuAndCheckForOverflow(v0, left, right, scratch1);
       __ BranchOnOverflow(&stub_call, scratch1);
       break;
     case Token::MUL: {
       __ Dmulh(v0, left, right);
       __ dsra32(scratch2, v0, 0);
       __ sra(scratch1, v0, 31);
       __ Branch(USE_DELAY_SLOT, &stub_call, ne, scratch2, Operand(scratch1));
       __ SmiTag(v0);
       __ Branch(USE_DELAY_SLOT, &done, ne, v0, Operand(zero_reg));
       __ Daddu(scratch2, right, left);
@@ skipping 1972 matching lines @@
               Operand(zero_reg));
   }
   __ bind(&loop);
   __ ld(string, MemOperand(element));
   __ Daddu(element, element, kPointerSize);
   __ JumpIfSmi(string, &bailout);
   __ ld(scratch1, FieldMemOperand(string, HeapObject::kMapOffset));
   __ lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset));
   __ JumpIfInstanceTypeIsNotSequentialOneByte(scratch1, scratch2, &bailout);
   __ ld(scratch1, FieldMemOperand(string, SeqOneByteString::kLengthOffset));
-  __ AdduAndCheckForOverflow(string_length, string_length, scratch1, scratch3);
+  __ DadduAndCheckForOverflow(string_length, string_length, scratch1, scratch3);
   __ BranchOnOverflow(&bailout, scratch3);
   __ Branch(&loop, lt, element, Operand(elements_end));
 
   // If array_length is 1, return elements[0], a string.
   __ Branch(&not_size_one_array, ne, array_length, Operand(1));
   __ ld(v0, FieldMemOperand(elements, FixedArray::kHeaderSize));
   __ Branch(&done);
 
   __ bind(&not_size_one_array);
 
@@ skipping 495 matching lines @@
           case KEYED_SUPER_PROPERTY:
             __ sd(v0, MemOperand(sp, 3 * kPointerSize));
             break;
         }
       }
     }
 
     Register scratch1 = a1;
     Register scratch2 = a4;
     __ li(scratch1, Operand(Smi::FromInt(count_value)));
-    __ AdduAndCheckForOverflow(v0, v0, scratch1, scratch2);
+    __ DadduAndCheckForOverflow(v0, v0, scratch1, scratch2);
     __ BranchOnNoOverflow(&done, scratch2);
     // Call stub. Undo operation first.
     __ Move(v0, a0);
     __ jmp(&stub_call);
     __ bind(&slow);
   }
   ToNumberStub convert_stub(isolate());
   __ CallStub(&convert_stub);
   PrepareForBailoutForId(expr->ToNumberId(), TOS_REG);
 
@@ skipping 531 matching lines @@
          reinterpret_cast<uint64_t>(
              isolate->builtins()->OsrAfterStackCheck()->entry()));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64