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

src/compiler/x64/instruction-codes-x64.h

 // 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.
 
 #ifndef V8_COMPILER_X64_INSTRUCTION_CODES_X64_H_
 #define V8_COMPILER_X64_INSTRUCTION_CODES_X64_H_
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // X64-specific opcodes that specify which assembly sequence to emit.
 // Most opcodes specify a single instruction.
 #define TARGET_ARCH_OPCODE_LIST(V) \
   V(X64Add)                        \
   V(X64Add32)                      \
   V(X64And)                        \
   V(X64And32)                      \
   V(X64Cmp)                        \
   V(X64Cmp32)                      \
+  V(X64Cmp16)                      \
+  V(X64Cmp8)                       \
   V(X64Test)                       \
   V(X64Test32)                     \
+  V(X64Test16)                     \
+  V(X64Test8)                      \
   V(X64Or)                         \
   V(X64Or32)                       \
   V(X64Xor)                        \
   V(X64Xor32)                      \
   V(X64Sub)                        \
   V(X64Sub32)                      \
   V(X64Imul)                       \
   V(X64Imul32)                     \
   V(X64ImulHigh32)                 \
   V(X64UmulHigh32)                 \
@@ skipping 99 matching lines @@
   V(X64BitcastIF)                  \
   V(X64BitcastLD)                  \
   V(X64Lea32)                      \
   V(X64Lea)                        \
   V(X64Dec32)                      \
   V(X64Inc32)                      \
   V(X64Push)                       \
   V(X64Poke)                       \
   V(X64StackCheck)
 
-
 // Addressing modes represent the "shape" of inputs to an instruction.
 // Many instructions support multiple addressing modes. Addressing modes
 // are encoded into the InstructionCode of the instruction and tell the
 // code generator after register allocation which assembler method to call.
 //
 // We use the following local notation for addressing modes:
 //
 // M = memory operand
 // R = base register
 // N = index register * N for N in {1, 2, 4, 8}
@@ skipping 17 matching lines @@
   V(M1I)  /* [      %r2*1 + K] */      \
   V(M2I)  /* [      %r2*2 + K] */      \
   V(M4I)  /* [      %r2*4 + K] */      \
   V(M8I)  /* [      %r2*8 + K] */
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_X64_INSTRUCTION_CODES_X64_H_