MIPS:[turbofan] Use Ins, Dins to clear bits instead of And with inverted immediate.

src/compiler/mips64/code-generator-mips64.cc

 // 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.
 
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/osr.h"
@@ skipping 702 matching lines @@
       } else {
         int64_t imm = i.InputOperand(1).immediate();
         __ sra(i.OutputRegister(), i.InputRegister(0),
                static_cast<uint16_t>(imm));
       }
       break;
     case kMips64Ext:
       __ Ext(i.OutputRegister(), i.InputRegister(0), i.InputInt8(1),
              i.InputInt8(2));
       break;
+    case kMips64Ins:
+      if (instr->InputAt(1)->IsImmediate() && i.InputInt8(1) == 0) {
+        __ Ins(i.OutputRegister(), zero_reg, i.InputInt8(1), i.InputInt8(2));
+      } else {
+        __ Ins(i.OutputRegister(), i.InputRegister(0), i.InputInt8(1),
+               i.InputInt8(2));
+      }
+      break;
     case kMips64Dext:
       __ Dext(i.OutputRegister(), i.InputRegister(0), i.InputInt8(1),
               i.InputInt8(2));
       break;
+    case kMips64Dins:
+      if (instr->InputAt(1)->IsImmediate() && i.InputInt8(1) == 0) {
+        __ Dins(i.OutputRegister(), zero_reg, i.InputInt8(1), i.InputInt8(2));
+      } else {
+        __ Dins(i.OutputRegister(), i.InputRegister(0), i.InputInt8(1),
+                i.InputInt8(2));
+      }
+      break;
     case kMips64Dshl:
       if (instr->InputAt(1)->IsRegister()) {
         __ dsllv(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1));
       } else {
         int64_t imm = i.InputOperand(1).immediate();
         if (imm < 32) {
           __ dsll(i.OutputRegister(), i.InputRegister(0),
                   static_cast<uint16_t>(imm));
         } else {
           __ dsll32(i.OutputRegister(), i.InputRegister(0),
@@ skipping 1029 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8