MIPS[64]: Optimize kMips[64]Tst in code-generator-mips[64].cc

src/compiler/mips/instruction-selector-mips.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/base/adapters.h"
 #include "src/base/bits.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 
@@ skipping 25 matching lines @@
     if (!m.HasValue()) return false;
     int32_t value = m.Value();
     switch (ArchOpcodeField::decode(opcode)) {
       case kMipsShl:
       case kMipsSar:
       case kMipsShr:
         return is_uint5(value);
       case kMipsAdd:
       case kMipsAnd:
       case kMipsOr:
+      case kMipsTst:
       case kMipsSub:
       case kMipsXor:
         return is_uint16(value);
       case kMipsLdc1:
       case kMipsSdc1:
       case kCheckedLoadFloat64:
       case kCheckedStoreFloat64:
         return std::numeric_limits<int16_t>::min() <= (value + kIntSize) &&
                std::numeric_limits<int16_t>::max() >= (value + kIntSize);
       default:
@@ skipping 1792 matching lines @@
     DCHECK(IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r1) ||
            IsMipsArchVariant(kMips32r2));
     return MachineOperatorBuilder::AlignmentRequirements::
         NoUnalignedAccessSupport();
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8