[ARMv8] ARMv8 builds are capable of ARMv7 instructions.

BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
@@ skipping 182 matching lines @@
 
 config("toolchain") {
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
   defines = []
   cflags = []
   ldflags = []
 
   if (v8_current_cpu == "arm") {
     defines += [ "V8_TARGET_ARCH_ARM" ]
-    if (arm_version == 7) {
+    if (arm_version >= 7) {
       defines += [ "CAN_USE_ARMV7_INSTRUCTIONS" ]
     }
     if (arm_fpu == "vfpv3-d16") {
       defines += [ "CAN_USE_VFP3_INSTRUCTIONS" ]
     } else if (arm_fpu == "vfpv3") {
       defines += [
         "CAN_USE_VFP3_INSTRUCTIONS",
         "CAN_USE_VFP32DREGS",
       ]
     } else if (arm_fpu == "neon") {
@@ skipping 2380 matching lines @@
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }
 
 v8_fuzzer("wasm_code_fuzzer") {
 }