[turbofan] Byte and word memory operands in x64 cmp/test. Fixes arithmetic_op_8 in assembler-x64.cc

src/compiler/x64/instruction-scheduler-x64.cc

 // Copyright 2015 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/compiler/instruction-scheduler.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 bool InstructionScheduler::SchedulerSupported() { return true; }
 
 
 int InstructionScheduler::GetTargetInstructionFlags(
     const Instruction* instr) const {
   switch (instr->arch_opcode()) {
     case kX64Add:
     case kX64Add32:
     case kX64And:
     case kX64And32:
     case kX64Cmp:
     case kX64Cmp32:
+    case kX64Cmp16:
+    case kX64Cmp8:
     case kX64Test:
     case kX64Test32:
+    case kX64Test16:
+    case kX64Test8:
     case kX64Or:
     case kX64Or32:
     case kX64Xor:
     case kX64Xor32:
     case kX64Sub:
     case kX64Sub32:
     case kX64Imul:
     case kX64Imul32:
     case kX64ImulHigh32:
     case kX64UmulHigh32:
@@ skipping 142 matching lines @@
 
 
 int InstructionScheduler::GetInstructionLatency(const Instruction* instr) {
   // TODO(all): Add instruction cost modeling.
   return 1;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8