MIPS[64]: Implement insert.df and I8 instructions in simulator

src/mips/constants-mips.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_CONSTANTS_H_
 #define  V8_MIPS_CONSTANTS_H_
 #include "src/globals.h"
 // UNIMPLEMENTED_ macro for MIPS.
 #ifdef DEBUG
 #define UNIMPLEMENTED_MIPS()                                                  \
@@ skipping 143 matching lines @@
 const int kNumFPURegisters = 32;
 const int kInvalidFPURegister = -1;
 
 // Number of MSA registers
 const int kNumMSARegisters = 32;
 const int kInvalidMSARegister = -1;
 
 const int kInvalidMSAControlRegister = -1;
 const int kMSAIRRegister = 0;
 const int kMSACSRRegister = 1;
+const int kMSARegSize = 128;
+const int kMSALanesByte = kMSARegSize / 8;
+const int kMSALanesHalf = kMSARegSize / 16;
+const int kMSALanesWord = kMSARegSize / 32;
+const int kMSALanesDword = kMSARegSize / 64;
 
 // FPU (coprocessor 1) control registers. Currently only FCSR is implemented.
 const int kFCSRRegister = 31;
 const int kInvalidFPUControlRegister = -1;
 const uint32_t kFPUInvalidResult = static_cast<uint32_t>(1 << 31) - 1;
 const int32_t kFPUInvalidResultNegative = static_cast<int32_t>(1 << 31);
 const uint64_t kFPU64InvalidResult =
     static_cast<uint64_t>(static_cast<uint64_t>(1) << 63) - 1;
 const int64_t kFPU64InvalidResultNegative =
     static_cast<int64_t>(static_cast<uint64_t>(1) << 63);
@@ skipping 1668 matching lines @@
       }
       break;
     default:
       return false;
   }
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif    // #ifndef V8_MIPS_CONSTANTS_H_