arm: Always build the NEON SIMD code when targetting ARMv7-A devices.

third_party/libjpeg_turbo/libjpeg.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'shared_generated_dir': '<(SHARED_INTERMEDIATE_DIR)/third_party/libjpeg_turbo',
     'use_system_libjpeg%': 0,
     'conditions': [
       [ 'OS=="win"', {
@@ skipping 137 matching lines @@
                 'simd/jdsamss2-64.asm',
                 'simd/jfss2fst-64.asm',
                 'simd/jfss2int-64.asm',
                 'simd/jfsseflt-64.asm',
                 'simd/jiss2flt-64.asm',
                 'simd/jiss2fst-64.asm',
                 'simd/jiss2int-64.asm',
                 'simd/jiss2red-64.asm',
               ],
             }],
-            # The ARM SIMD implementation requires the Neon instruction set.
+            # The ARM SIMD implementation can be used for devices that support
+            # the NEON instruction set. This is done dynamically by probing CPU
+            # features at runtime, so always compile it for ARMv7-A devices.
             [ 'target_arch=="arm"', {
               'conditions': [
-                [ 'arm_neon==1', {
+                [ 'armv7 == 1 or arm_neon == 1', {
                   'sources': [
                     'simd/jsimd_arm.c',
                     'simd/jsimd_arm_neon.S',
                   ],
                 }, {
                   'sources': [
                     'jsimd_none.c',
                   ],
                 }]
               ],
@@ skipping 134 matching lines @@
       ],
     }],
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: