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

src/compiler/x64/code-generator-x64.cc

 // Copyright 2013 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/code-generator.h"
 
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 821 matching lines @@
       break;
     case kX64Sub:
       ASSEMBLE_BINOP(subq);
       break;
     case kX64And32:
       ASSEMBLE_BINOP(andl);
       break;
     case kX64And:
       ASSEMBLE_BINOP(andq);
       break;
+    case kX64Cmp8:
+      ASSEMBLE_COMPARE(cmpb);
+      break;
+    case kX64Cmp16:
+      ASSEMBLE_COMPARE(cmpw);
+      break;
     case kX64Cmp32:
       ASSEMBLE_COMPARE(cmpl);
       break;
     case kX64Cmp:
       ASSEMBLE_COMPARE(cmpq);
       break;
+    case kX64Test8:
+      ASSEMBLE_COMPARE(testb);
+      break;
+    case kX64Test16:
+      ASSEMBLE_COMPARE(testw);
+      break;
     case kX64Test32:
       ASSEMBLE_COMPARE(testl);
       break;
     case kX64Test:
       ASSEMBLE_COMPARE(testq);
       break;
     case kX64Imul32:
       ASSEMBLE_MULT(imull);
       break;
     case kX64Imul:
@@ skipping 1375 matching lines @@
     int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc;
     __ Nop(padding_size);
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8