Introduce a new ARMSIMDBC configuration.

This allows us to build dart binary with SIMDBC for non-Android ARM devices.

We are going to use it to measure performance.

BUG=http://dartbug.com/26421
R=zra@google.com

Review URL: https://codereview.chromium.org/1967613002 .

tools/build.py

@@ -56,7 +56,7 @@ def BuildOptions():
   result.add_option("-a", "--arch",
       help='Target architectures (comma-separated).',
       metavar='[all,ia32,x64,simarm,arm,simarmv6,armv6,simarmv5te,armv5te,'
-              'simmips,mips,simarm64,arm64,simdbc,]',
+              'simmips,mips,simarm64,arm64,simdbc,armsimdbc]',
       default=utils.GuessArchitecture())
   result.add_option("--os",
     help='Target OSs (comma-separated).',
@@ -103,7 +103,7 @@ def ProcessOptions(options, args):
   for arch in options.arch:
     archs = ['ia32', 'x64', 'simarm', 'arm', 'simarmv6', 'armv6',
              'simarmv5te', 'armv5te', 'simmips', 'mips', 'simarm64', 'arm64',
-             'simdbc', 'simdbc64']
+             'simdbc', 'simdbc64', 'armsimdbc']
     if not arch in archs:
       print "Unknown arch %s" % arch
       return False
@@ -154,7 +154,7 @@ def GetToolchainPrefix(target_os, arch, options):
                     'supported on Linux.')
 
   # For ARM Linux, by default use the Linux distribution's cross-compiler.
-  if arch == 'arm':
+  if arch == 'arm' or arch == 'armsimdbc':
     # To use a non-hf compiler, specify on the command line with --toolchain.
     return (DEFAULT_ARM_CROSS_COMPILER_PATH + "/arm-linux-gnueabihf")
   if arch == 'arm64':

tools/gyp/configurations.gypi

@@ -426,6 +426,38 @@
         ],
       },
 
+      # Special Linux-only targets to enable SIMDBC cross compilation for
+      # non-Android ARM devices.
+      'DebugXARMSIMDBC': {
+        'inherit_from': [
+          'Dart_Base', 'Dart_simdbc_Base', 'Dart_Debug',
+          'Dart_Linux_Base',
+          'Dart_Linux_xarm_Base',
+          'Dart_Linux_Debug',
+        ],
+        'defines': [
+          'DEBUG',
+        ],
+      },
+
+      'ReleaseXARMSIMDBC': {
+        'inherit_from': [
+          'Dart_Base', 'Dart_simdbc_Base', 'Dart_Release',
+          'Dart_Linux_Base',
+          'Dart_Linux_xarm_Base',
+          'Dart_Linux_Release',
+        ],
+      },
+
+      'ProductXARMSIMDBC': {
+        'inherit_from': [
+          'Dart_Base', 'Dart_simdbc_Base', 'Dart_Product',
+          'Dart_Linux_Base',
+          'Dart_Linux_xarm_Base',
+          'Dart_Linux_Product',
+        ],
+      },
+
       # ARM and MIPS hardware configurations are only for Linux and Android.
       'DebugXARM': {
         'inherit_from': [

tools/utils.py

@@ -242,6 +242,7 @@ ARCH_FAMILY = {
   'simarm64': 'ia32',
   'simdbc': 'ia32',
   'simdbc64': 'ia32',
+  'armsimdbc': 'arm',
 }
 
 ARCH_GUESS = GuessArchitecture()