MIPS64: Use the Lsa() and Dlsa() macros/r6 instructions in existing code.

BUG=

Review URL: https://codereview.chromium.org/1605093002

Cr-Commit-Position: refs/heads/master@{#33430}

src/crankshaft/mips64/lithium-codegen-mips64.cc

@@ -1410,8 +1410,7 @@ void LCodeGen::DoMulS(LMulS* instr) {
           if (constant < 0) __ Dsubu(result, zero_reg, result);
         } else if (base::bits::IsPowerOfTwo32(constant_abs - 1)) {
           int32_t shift = WhichPowerOf2(constant_abs - 1);
-          __ dsll(scratch, left, shift);
-          __ Daddu(result, scratch, left);
+          __ Dlsa(result, left, left, shift);
           // Correct the sign of the result if the constant is negative.
           if (constant < 0) __ Dsubu(result, zero_reg, result);
         } else if (base::bits::IsPowerOfTwo32(constant_abs + 1)) {
@@ -1512,8 +1511,7 @@ void LCodeGen::DoMulI(LMulI* instr) {
           if (constant < 0) __ Subu(result, zero_reg, result);
         } else if (base::bits::IsPowerOfTwo32(constant_abs - 1)) {
           int32_t shift = WhichPowerOf2(constant_abs - 1);
-          __ sll(scratch, left, shift);
-          __ addu(result, scratch, left);
+          __ Lsa(result, left, left, shift);
           // Correct the sign of the result if the constant is negative.
           if (constant < 0) __ Subu(result, zero_reg, result);
         } else if (base::bits::IsPowerOfTwo32(constant_abs + 1)) {
@@ -2703,8 +2701,7 @@ void LCodeGen::DoReturn(LReturn* instr) {
     Register reg = ToRegister(instr->parameter_count());
     // The argument count parameter is a smi
     __ SmiUntag(reg);
-    __ dsll(at, reg, kPointerSizeLog2);
-    __ Daddu(sp, sp, at);
+    __ Dlsa(sp, sp, reg, kPointerSizeLog2);
   }
 
   __ Jump(ra);
@@ -2921,8 +2918,7 @@ void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) {
       Register index = ToRegister(instr->index());
       __ li(at, Operand(const_length + 1));
       __ Dsubu(result, at, index);
-      __ dsll(at, result, kPointerSizeLog2);
-      __ Daddu(at, arguments, at);
+      __ Dlsa(at, arguments, result, kPointerSizeLog2);
       __ ld(result, MemOperand(at));
     }
   } else if (instr->index()->IsConstantOperand()) {
@@ -2931,12 +2927,10 @@ void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) {
     int loc = const_index - 1;
     if (loc != 0) {
       __ Dsubu(result, length, Operand(loc));
-      __ dsll(at, result, kPointerSizeLog2);
-      __ Daddu(at, arguments, at);
+      __ Dlsa(at, arguments, result, kPointerSizeLog2);
       __ ld(result, MemOperand(at));
     } else {
-      __ dsll(at, length, kPointerSizeLog2);
-      __ Daddu(at, arguments, at);
+      __ Dlsa(at, arguments, length, kPointerSizeLog2);
       __ ld(result, MemOperand(at));
     }
   } else {
@@ -2944,8 +2938,7 @@ void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) {
     Register index = ToRegister(instr->index());
     __ Dsubu(result, length, index);
     __ Daddu(result, result, 1);
-    __ dsll(at, result, kPointerSizeLog2);
-    __ Daddu(at, arguments, at);
+    __ Dlsa(at, arguments, result, kPointerSizeLog2);
     __ ld(result, MemOperand(at));
   }
 }
@@ -3107,8 +3100,7 @@ void LCodeGen::DoLoadKeyedFixedArray(LLoadKeyed* instr) {
     __ SmiScale(scratch, key, kPointerSizeLog2);
     __ daddu(scratch, elements, scratch);
     } else {
-      __ dsll(scratch, key, kPointerSizeLog2);
-      __ daddu(scratch, elements, scratch);
+      __ Dlsa(scratch, elements, key, kPointerSizeLog2);
     }
   }
 
@@ -4282,8 +4274,7 @@ void LCodeGen::DoStoreKeyedFixedArray(LStoreKeyed* instr) {
       __ SmiScale(scratch, key, kPointerSizeLog2);
       __ daddu(store_base, elements, scratch);
     } else {
-      __ dsll(scratch, key, kPointerSizeLog2);
-      __ daddu(store_base, elements, scratch);
+      __ Dlsa(store_base, elements, key, kPointerSizeLog2);
     }
   }
 
@@ -4588,8 +4579,7 @@ void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) {
   __ Branch(deferred->entry(), hi,
             char_code, Operand(String::kMaxOneByteCharCode));
   __ LoadRoot(result, Heap::kSingleCharacterStringCacheRootIndex);
-  __ dsll(scratch, char_code, kPointerSizeLog2);
-  __ Daddu(result, result, scratch);
+  __ Dlsa(result, result, char_code, kPointerSizeLog2);
   __ ld(result, FieldMemOperand(result, FixedArray::kHeaderSize));
   __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex);
   __ Branch(deferred->entry(), eq, result, Operand(scratch));

src/full-codegen/mips64/full-codegen-mips64.cc

@@ -3802,8 +3802,7 @@ void FullCodeGenerator::EmitFastOneByteArrayJoin(CallRuntime* expr) {
   __ mov(string_length, zero_reg);
   __ Daddu(element,
           elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
-  __ dsll(elements_end, array_length, kPointerSizeLog2);
-  __ Daddu(elements_end, element, elements_end);
+  __ Dlsa(elements_end, element, array_length, kPointerSizeLog2);
   // Loop condition: while (element < elements_end).
   // Live values in registers:
   //   elements: Fixed array of strings.
@@ -3882,8 +3881,7 @@ void FullCodeGenerator::EmitFastOneByteArrayJoin(CallRuntime* expr) {
   // Prepare for looping. Set up elements_end to end of the array. Set
   // result_pos to the position of the result where to write the first
   // character.
-  __ dsll(elements_end, array_length, kPointerSizeLog2);
-  __ Daddu(elements_end, element, elements_end);
+  __ Dlsa(elements_end, element, array_length, kPointerSizeLog2);
   result_pos = array_length;  // End of live range for array_length.
   array_length = no_reg;
   __ Daddu(result_pos,

src/ic/mips64/stub-cache-mips64.cc

@@ -42,13 +42,11 @@ static void ProbeTable(Isolate* isolate, MacroAssembler* masm,
   scratch = no_reg;
 
   // Multiply by 3 because there are 3 fields per entry (name, code, map).
-  __ dsll(offset_scratch, offset, 1);
-  __ Daddu(offset_scratch, offset_scratch, offset);
+  __ Dlsa(offset_scratch, offset, offset, 1);
 
   // Calculate the base address of the entry.
   __ li(base_addr, Operand(key_offset));
-  __ dsll(at, offset_scratch, kPointerSizeLog2);
-  __ Daddu(base_addr, base_addr, at);
+  __ Dlsa(base_addr, base_addr, offset_scratch, kPointerSizeLog2);
 
   // Check that the key in the entry matches the name.
   __ ld(at, MemOperand(base_addr, 0));

src/mips/code-stubs-mips.cc

@@ -4054,10 +4054,8 @@ void NameDictionaryLookupStub::Generate(MacroAssembler* masm) {
     // Scale the index by multiplying by the entry size.
     STATIC_ASSERT(NameDictionary::kEntrySize == 3);
     // index *= 3.
-    __ mov(at, index);
     __ Lsa(index, index, index, 1);
 
-
     STATIC_ASSERT(kSmiTagSize == 1);
     __ Lsa(index, dictionary, index, 2);
     __ lw(entry_key, FieldMemOperand(index, kElementsStartOffset));

src/mips64/builtins-mips64.cc

@@ -156,8 +156,7 @@ void Builtins::Generate_NumberConstructor(MacroAssembler* masm) {
   {
     __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg));
     __ Dsubu(a0, a0, Operand(1));
-    __ dsll(a0, a0, kPointerSizeLog2);
-    __ Daddu(sp, a0, sp);
+    __ Dlsa(sp, sp, a0, kPointerSizeLog2);
     __ ld(a0, MemOperand(sp));
     __ Drop(2);
   }
@@ -192,8 +191,7 @@ void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
     Label no_arguments, done;
     __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg));
     __ Dsubu(a0, a0, Operand(1));
-    __ dsll(a0, a0, kPointerSizeLog2);
-    __ Daddu(sp, a0, sp);
+    __ Dlsa(sp, sp, a0, kPointerSizeLog2);
     __ ld(a0, MemOperand(sp));
     __ Drop(2);
     __ jmp(&done);
@@ -257,8 +255,7 @@ void Builtins::Generate_StringConstructor(MacroAssembler* masm) {
   {
     __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg));
     __ Dsubu(a0, a0, Operand(1));
-    __ dsll(a0, a0, kPointerSizeLog2);
-    __ Daddu(sp, a0, sp);
+    __ Dlsa(sp, sp, a0, kPointerSizeLog2);
     __ ld(a0, MemOperand(sp));
     __ Drop(2);
   }
@@ -319,8 +316,7 @@ void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) {
     Label no_arguments, done;
     __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg));
     __ Dsubu(a0, a0, Operand(1));
-    __ dsll(a0, a0, kPointerSizeLog2);
-    __ Daddu(sp, a0, sp);
+    __ Dlsa(sp, sp, a0, kPointerSizeLog2);
     __ ld(a0, MemOperand(sp));
     __ Drop(2);
     __ jmp(&done);
@@ -611,8 +607,7 @@ static void Generate_JSConstructStubHelper(MacroAssembler* masm,
     __ mov(t0, a0);
     __ jmp(&entry);
     __ bind(&loop);
-    __ dsll(a4, t0, kPointerSizeLog2);
-    __ Daddu(a4, a2, Operand(a4));
+    __ Dlsa(a4, a2, t0, kPointerSizeLog2);
     __ ld(a5, MemOperand(a4));
     __ push(a5);
     __ bind(&entry);
@@ -798,8 +793,7 @@ static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm,
     // a3: argc
     // s0: argv, i.e. points to first arg
     Label loop, entry;
-    __ dsll(a4, a3, kPointerSizeLog2);
-    __ daddu(a6, s0, a4);
+    __ Dlsa(a6, s0, a3, kPointerSizeLog2);
     __ b(&entry);
     __ nop();   // Branch delay slot nop.
     // a6 points past last arg.
@@ -955,8 +949,7 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
   __ Daddu(a0, kInterpreterBytecodeArrayRegister,
            kInterpreterBytecodeOffsetRegister);
   __ lbu(a0, MemOperand(a0));
-  __ dsll(at, a0, kPointerSizeLog2);
-  __ Daddu(at, kInterpreterDispatchTableRegister, at);
+  __ Dlsa(at, kInterpreterDispatchTableRegister, a0, kPointerSizeLog2);
   __ ld(at, MemOperand(at));
   // TODO(rmcilroy): Make dispatch table point to code entrys to avoid untagging
   // and header removal.
@@ -1091,8 +1084,7 @@ static void Generate_EnterBytecodeDispatch(MacroAssembler* masm) {
   __ Daddu(a1, kInterpreterBytecodeArrayRegister,
            kInterpreterBytecodeOffsetRegister);
   __ lbu(a1, MemOperand(a1));
-  __ dsll(a1, a1, kPointerSizeLog2);
-  __ Daddu(a1, kInterpreterDispatchTableRegister, a1);
+  __ Dlsa(a1, kInterpreterDispatchTableRegister, a1, kPointerSizeLog2);
   __ ld(a1, MemOperand(a1));
   __ Daddu(a1, a1, Operand(Code::kHeaderSize - kHeapObjectTag));
   __ Jump(a1);
@@ -1408,8 +1400,7 @@ void Builtins::Generate_HandleFastApiCall(MacroAssembler* masm) {
 
   // Do the compatible receiver check
   Label receiver_check_failed;
-  __ sll(at, a0, kPointerSizeLog2);
-  __ Daddu(t8, sp, at);
+  __ Dlsa(t8, sp, a0, kPointerSizeLog2);
   __ ld(t0, MemOperand(t8));
   CompatibleReceiverCheck(masm, t0, t1, &receiver_check_failed);
 
@@ -1543,6 +1534,7 @@ void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) {
     Register scratch = a4;
     __ LoadRoot(a2, Heap::kUndefinedValueRootIndex);
     __ mov(a3, a2);
+    // Dlsa() cannot be used hare as scratch value used later.
     __ dsll(scratch, a0, kPointerSizeLog2);
     __ Daddu(a0, sp, Operand(scratch));
     __ ld(a1, MemOperand(a0));  // receiver
@@ -1613,8 +1605,7 @@ void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) {
 
   // 2. Get the function to call (passed as receiver) from the stack.
   // a0: actual number of arguments
-  __ dsll(at, a0, kPointerSizeLog2);
-  __ daddu(at, sp, at);
+  __ Dlsa(at, sp, a0, kPointerSizeLog2);
   __ ld(a1, MemOperand(at));
 
   // 3. Shift arguments and return address one slot down on the stack
@@ -1625,8 +1616,7 @@ void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) {
   {
     Label loop;
     // Calculate the copy start address (destination). Copy end address is sp.
-    __ dsll(at, a0, kPointerSizeLog2);
-    __ daddu(a2, sp, at);
+    __ Dlsa(a2, sp, a0, kPointerSizeLog2);
 
     __ bind(&loop);
     __ ld(at, MemOperand(a2, -kPointerSize));
@@ -1726,6 +1716,7 @@ void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) {
     Register scratch = a4;
     __ LoadRoot(a1, Heap::kUndefinedValueRootIndex);
     __ mov(a2, a1);
+    // Dlsa() cannot be used hare as scratch value used later.
     __ dsll(scratch, a0, kPointerSizeLog2);
     __ Daddu(a0, sp, Operand(scratch));
     __ sd(a2, MemOperand(a0));  // receiver
@@ -1937,8 +1928,7 @@ void Builtins::Generate_Apply(MacroAssembler* masm) {
     Label done, loop;
     __ bind(&loop);
     __ Branch(&done, eq, a4, Operand(a2));
-    __ dsll(at, a4, kPointerSizeLog2);
-    __ Daddu(at, a0, at);
+    __ Dlsa(at, a0, a4, kPointerSizeLog2);
     __ ld(at, FieldMemOperand(at, FixedArray::kHeaderSize));
     __ Push(at);
     __ Daddu(a4, a4, Operand(1));
@@ -2001,8 +1991,7 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
       __ LoadGlobalProxy(a3);
     } else {
       Label convert_to_object, convert_receiver;
-      __ dsll(at, a0, kPointerSizeLog2);
-      __ daddu(at, sp, at);
+      __ Dlsa(at, sp, a0, kPointerSizeLog2);
       __ ld(a3, MemOperand(at));
       __ JumpIfSmi(a3, &convert_to_object);
       STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE);
@@ -2038,8 +2027,7 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
       __ ld(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
       __ bind(&convert_receiver);
     }
-    __ dsll(at, a0, kPointerSizeLog2);
-    __ daddu(at, sp, at);
+    __ Dlsa(at, sp, a0, kPointerSizeLog2);
     __ sd(a3, MemOperand(at));
   }
   __ bind(&done_convert);
@@ -2079,8 +2067,7 @@ void Builtins::Generate_CallBoundFunction(MacroAssembler* masm) {
   // Patch the receiver to [[BoundThis]].
   {
     __ ld(at, FieldMemOperand(a1, JSBoundFunction::kBoundThisOffset));
-    __ dsll(a4, a0, kPointerSizeLog2);
-    __ daddu(a4, a4, sp);
+    __ Dlsa(a4, sp, a0, kPointerSizeLog2);
     __ sd(at, MemOperand(a4));
   }
 
@@ -2121,11 +2108,9 @@ void Builtins::Generate_CallBoundFunction(MacroAssembler* masm) {
     __ mov(a5, zero_reg);
     __ bind(&loop);
     __ Branch(&done_loop, gt, a5, Operand(a0));
-    __ dsll(a6, a4, kPointerSizeLog2);
-    __ daddu(a6, a6, sp);
+    __ Dlsa(a6, sp, a4, kPointerSizeLog2);
     __ ld(at, MemOperand(a6));
-    __ dsll(a6, a5, kPointerSizeLog2);
-    __ daddu(a6, a6, sp);
+    __ Dlsa(a6, sp, a5, kPointerSizeLog2);
     __ sd(at, MemOperand(a6));
     __ Daddu(a4, a4, Operand(1));
     __ Daddu(a5, a5, Operand(1));
@@ -2142,11 +2127,9 @@ void Builtins::Generate_CallBoundFunction(MacroAssembler* masm) {
     __ bind(&loop);
     __ Dsubu(a4, a4, Operand(1));
     __ Branch(&done_loop, lt, a4, Operand(zero_reg));
-    __ dsll(a5, a4, kPointerSizeLog2);
-    __ daddu(a5, a5, a2);
+    __ Dlsa(a5, a2, a4, kPointerSizeLog2);
     __ ld(at, MemOperand(a5));
-    __ dsll(a5, a0, kPointerSizeLog2);
-    __ daddu(a5, a5, sp);
+    __ Dlsa(a5, sp, a0, kPointerSizeLog2);
     __ sd(at, MemOperand(a5));
     __ Daddu(a0, a0, Operand(1));
     __ Branch(&loop);
@@ -2197,8 +2180,7 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode) {
   __ And(t1, t1, Operand(1 << Map::kIsCallable));
   __ Branch(&non_callable, eq, t1, Operand(zero_reg));
   // Overwrite the original receiver with the (original) target.
-  __ dsll(at, a0, kPointerSizeLog2);
-  __ daddu(at, sp, at);
+  __ Dlsa(at, sp, a0, kPointerSizeLog2);
   __ sd(a1, MemOperand(at));
   // Let the "call_as_function_delegate" take care of the rest.
   __ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, a1);
@@ -2284,11 +2266,9 @@ void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) {
     __ mov(a5, zero_reg);
     __ bind(&loop);
     __ Branch(&done_loop, ge, a5, Operand(a0));
-    __ dsll(a6, a4, kPointerSizeLog2);
-    __ daddu(a6, a6, sp);
+    __ Dlsa(a6, sp, a4, kPointerSizeLog2);
     __ ld(at, MemOperand(a6));
-    __ dsll(a6, a5, kPointerSizeLog2);
-    __ daddu(a6, a6, sp);
+    __ Dlsa(a6, sp, a5, kPointerSizeLog2);
     __ sd(at, MemOperand(a6));
     __ Daddu(a4, a4, Operand(1));
     __ Daddu(a5, a5, Operand(1));
@@ -2305,11 +2285,9 @@ void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) {
     __ bind(&loop);
     __ Dsubu(a4, a4, Operand(1));
     __ Branch(&done_loop, lt, a4, Operand(zero_reg));
-    __ dsll(a5, a4, kPointerSizeLog2);
-    __ daddu(a5, a5, a2);
+    __ Dlsa(a5, a2, a4, kPointerSizeLog2);
     __ ld(at, MemOperand(a5));
-    __ dsll(a5, a0, kPointerSizeLog2);
-    __ daddu(a5, a5, sp);
+    __ Dlsa(a5, sp, a0, kPointerSizeLog2);
     __ sd(at, MemOperand(a5));
     __ Daddu(a0, a0, Operand(1));
     __ Branch(&loop);
@@ -2388,8 +2366,7 @@ void Builtins::Generate_Construct(MacroAssembler* masm) {
   // Called Construct on an exotic Object with a [[Construct]] internal method.
   {
     // Overwrite the original receiver with the (original) target.
-    __ dsll(at, a0, kPointerSizeLog2);
-    __ daddu(at, sp, at);
+    __ Dlsa(at, sp, a0, kPointerSizeLog2);
     __ sd(a1, MemOperand(at));
     // Let the "call_as_constructor_delegate" take care of the rest.
     __ LoadNativeContextSlot(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, a1);

src/mips64/code-stubs-mips64.cc

@@ -1073,8 +1073,7 @@ void CEntryStub::Generate(MacroAssembler* masm) {
     __ mov(s1, a2);
   } else {
     // Compute the argv pointer in a callee-saved register.
-    __ dsll(s1, a0, kPointerSizeLog2);
-    __ Daddu(s1, sp, s1);
+    __ Dlsa(s1, sp, a0, kPointerSizeLog2);
     __ Dsubu(s1, s1, kPointerSize);
   }
 
@@ -3192,8 +3191,7 @@ void SubStringStub::Generate(MacroAssembler* masm) {
 
   // Locate first character of substring to copy.
   STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0);
-  __ dsll(a4, a3, 1);
-  __ Daddu(a5, a5, a4);
+  __ Dlsa(a5, a5, a3, 1);
   // Locate first character of result.
   __ Daddu(a1, v0, Operand(SeqTwoByteString::kHeaderSize - kHeapObjectTag));
 
@@ -3928,16 +3926,14 @@ void NameDictionaryLookupStub::GenerateNegativeLookup(MacroAssembler* masm,
 
     // Scale the index by multiplying by the entry size.
     STATIC_ASSERT(NameDictionary::kEntrySize == 3);
-    __ dsll(at, index, 1);
-    __ Daddu(index, index, at);  // index *= 3.
+    __ Dlsa(index, index, index, 1);  // index *= 3.
 
     Register entity_name = scratch0;
     // Having undefined at this place means the name is not contained.
     STATIC_ASSERT(kSmiTagSize == 1);
     Register tmp = properties;
 
-    __ dsll(scratch0, index, kPointerSizeLog2);
-    __ Daddu(tmp, properties, scratch0);
+    __ Dlsa(tmp, properties, index, kPointerSizeLog2);
     __ ld(entity_name, FieldMemOperand(tmp, kElementsStartOffset));
 
     DCHECK(!tmp.is(entity_name));
@@ -4026,13 +4022,10 @@ void NameDictionaryLookupStub::GeneratePositiveLookup(MacroAssembler* masm,
     // Scale the index by multiplying by the entry size.
     STATIC_ASSERT(NameDictionary::kEntrySize == 3);
     // scratch2 = scratch2 * 3.
-
-    __ dsll(at, scratch2, 1);
-    __ Daddu(scratch2, scratch2, at);
+    __ Dlsa(scratch2, scratch2, scratch2, 1);
 
     // Check if the key is identical to the name.
-    __ dsll(at, scratch2, kPointerSizeLog2);
-    __ Daddu(scratch2, elements, at);
+    __ Dlsa(scratch2, elements, scratch2, kPointerSizeLog2);
     __ ld(at, FieldMemOperand(scratch2, kElementsStartOffset));
     __ Branch(done, eq, name, Operand(at));
   }
@@ -4113,14 +4106,10 @@ void NameDictionaryLookupStub::Generate(MacroAssembler* masm) {
     // Scale the index by multiplying by the entry size.
     STATIC_ASSERT(NameDictionary::kEntrySize == 3);
     // index *= 3.
-    __ mov(at, index);
-    __ dsll(index, index, 1);
-    __ Daddu(index, index, at);
-
+    __ Dlsa(index, index, index, 1);
 
     STATIC_ASSERT(kSmiTagSize == 1);
-    __ dsll(index, index, kPointerSizeLog2);
-    __ Daddu(index, index, dictionary);
+    __ Dlsa(index, dictionary, index, kPointerSizeLog2);
     __ ld(entry_key, FieldMemOperand(index, kElementsStartOffset));
 
     // Having undefined at this place means the name is not contained.
@@ -5105,8 +5094,7 @@ void ArrayConstructorStub::Generate(MacroAssembler* masm) {
   switch (argument_count()) {
     case ANY:
     case MORE_THAN_ONE:
-      __ dsll(at, a0, kPointerSizeLog2);
-      __ Daddu(at, sp, at);
+      __ Dlsa(at, sp, a0, kPointerSizeLog2);
       __ sd(a1, MemOperand(at));
       __ li(at, Operand(3));
       __ Daddu(a0, a0, at);
@@ -5212,8 +5200,7 @@ void LoadGlobalViaContextStub::Generate(MacroAssembler* masm) {
   }
 
   // Load the PropertyCell value at the specified slot.
-  __ dsll(at, slot_reg, kPointerSizeLog2);
-  __ Daddu(at, at, Operand(context_reg));
+  __ Dlsa(at, context_reg, slot_reg, kPointerSizeLog2);
   __ ld(result_reg, ContextMemOperand(at, 0));
   __ ld(result_reg, FieldMemOperand(result_reg, PropertyCell::kValueOffset));
 
@@ -5251,8 +5238,7 @@ void StoreGlobalViaContextStub::Generate(MacroAssembler* masm) {
   }
 
   // Load the PropertyCell at the specified slot.
-  __ dsll(at, slot_reg, kPointerSizeLog2);
-  __ Daddu(at, at, Operand(context_reg));
+  __ Dlsa(at, context_reg, slot_reg, kPointerSizeLog2);
   __ ld(cell_reg, ContextMemOperand(at, 0));
 
   // Load PropertyDetails for the cell (actually only the cell_type and kind).

src/mips64/codegen-mips64.cc

@@ -1078,8 +1078,7 @@ void StringCharLoadGenerator::Generate(MacroAssembler* masm,
   __ And(at, result, Operand(kStringEncodingMask));
   __ Branch(&one_byte, ne, at, Operand(zero_reg));
   // Two-byte string.
-  __ dsll(at, index, 1);
-  __ Daddu(at, string, at);
+  __ Dlsa(at, string, index, 1);
   __ lhu(result, MemOperand(at));
   __ jmp(&done);
   __ bind(&one_byte);
@@ -1151,8 +1150,7 @@ void MathExpGenerator::EmitMathExp(MacroAssembler* masm,
 
   // Must not call ExpConstant() after overwriting temp3!
   __ li(temp3, Operand(ExternalReference::math_exp_log_table()));
-  __ dsll(at, temp2, 3);
-  __ Daddu(temp3, temp3, Operand(at));
+  __ Dlsa(temp3, temp3, temp2, 3);
   __ lwu(temp2, MemOperand(temp3, Register::kMantissaOffset));
   __ lwu(temp3, MemOperand(temp3, Register::kExponentOffset));
   // The first word is loaded is the lower number register.

src/mips64/deoptimizer-mips64.cc

@@ -273,8 +273,7 @@ void Deoptimizer::TableEntryGenerator::Generate() {
   // a1 = one past the last FrameDescription**.
   __ lw(a1, MemOperand(a0, Deoptimizer::output_count_offset()));
   __ ld(a4, MemOperand(a0, Deoptimizer::output_offset()));  // a4 is output_.
-  __ dsll(a1, a1, kPointerSizeLog2);  // Count to offset.
-  __ daddu(a1, a4, a1);  // a1 = one past the last FrameDescription**.
+  __ Dlsa(a1, a4, a1, kPointerSizeLog2);
   __ BranchShort(&outer_loop_header);
   __ bind(&outer_push_loop);
   // Inner loop state: a2 = current FrameDescription*, a3 = loop index.

src/mips64/macro-assembler-mips64.cc

@@ -503,16 +503,14 @@ void MacroAssembler::GetNumberHash(Register reg0, Register scratch) {
   // hash = ~hash + (hash << 15);
   // The algorithm uses 32-bit integer values.
   nor(scratch, reg0, zero_reg);
-  sll(at, reg0, 15);
-  addu(reg0, scratch, at);
+  Lsa(reg0, scratch, reg0, 15);
 
   // hash = hash ^ (hash >> 12);
   srl(at, reg0, 12);
   xor_(reg0, reg0, at);
 
   // hash = hash + (hash << 2);
-  sll(at, reg0, 2);
-  addu(reg0, reg0, at);
+  Lsa(reg0, reg0, reg0, 2);
 
   // hash = hash ^ (hash >> 4);
   srl(at, reg0, 4);
@@ -520,8 +518,7 @@ void MacroAssembler::GetNumberHash(Register reg0, Register scratch) {
 
   // hash = hash * 2057;
   sll(scratch, reg0, 11);
-  sll(at, reg0, 3);
-  addu(reg0, reg0, at);
+  Lsa(reg0, reg0, reg0, 3);
   addu(reg0, reg0, scratch);
 
   // hash = hash ^ (hash >> 16);
@@ -581,12 +578,10 @@ void MacroAssembler::LoadFromNumberDictionary(Label* miss,
 
     // Scale the index by multiplying by the element size.
     DCHECK(SeededNumberDictionary::kEntrySize == 3);
-    dsll(at, reg2, 1);  // 2x.
-    daddu(reg2, reg2, at);  // reg2 = reg2 * 3.
+    Dlsa(reg2, reg2, reg2, 1);  // reg2 = reg2 * 3.
 
     // Check if the key is identical to the name.
-    dsll(at, reg2, kPointerSizeLog2);
-    daddu(reg2, elements, at);
+    Dlsa(reg2, elements, reg2, kPointerSizeLog2);
 
     ld(at, FieldMemOperand(reg2, SeededNumberDictionary::kElementsStartOffset));
     if (i != kNumberDictionaryProbes - 1) {
@@ -3839,8 +3834,7 @@ void MacroAssembler::Allocate(Register object_size, Register result,
   // to calculate the new top. Object size may be in words so a shift is
   // required to get the number of bytes.
   if ((flags & SIZE_IN_WORDS) != 0) {
-    dsll(result_end, object_size, kPointerSizeLog2);
-    Daddu(result_end, result, result_end);
+    Dlsa(result_end, result, object_size, kPointerSizeLog2);
   } else {
     Daddu(result_end, result, Operand(object_size));
   }
@@ -5584,8 +5578,7 @@ void MacroAssembler::LeaveExitFrame(bool save_doubles, Register argument_count,
     if (argument_count_is_length) {
       daddu(sp, sp, argument_count);
     } else {
-      dsll(t8, argument_count, kPointerSizeLog2);
-      daddu(sp, sp, t8);
+      Dlsa(sp, sp, argument_count, kPointerSizeLog2, t8);
     }
   }
 
@@ -6173,8 +6166,7 @@ void MacroAssembler::GetMarkBits(Register addr_reg,
   Ext(mask_reg, addr_reg, kPointerSizeLog2, Bitmap::kBitsPerCellLog2);
   const int kLowBits = kPointerSizeLog2 + Bitmap::kBitsPerCellLog2;
   Ext(t8, addr_reg, kLowBits, kPageSizeBits - kLowBits);
-  dsll(t8, t8, Bitmap::kBytesPerCellLog2);
-  Daddu(bitmap_reg, bitmap_reg, t8);
+  Dlsa(bitmap_reg, bitmap_reg, t8, Bitmap::kBytesPerCellLog2);
   li(t8, Operand(1));
   dsllv(mask_reg, t8, mask_reg);
 }