[lit] Teach lit about global-isel requirement.

llvm-svn: 262878

1 files changed, 14 insertions, 0 deletions

diff --git a/llvm/test/lit.cfg b/llvm/test/lit.cfg
index 6dc021c9af9..c1a4499db29 100644
--- a/llvm/test/lit.cfg
+++ b/llvm/test/lit.cfg
@@ -482,3 +482,17 @@ gmalloc_path_str = lit_config.params.get('gmalloc_path',
 
 if use_gmalloc:
      config.environment.update({'DYLD_INSERT_LIBRARIES' : gmalloc_path_str})
+
+# Ask llvm-config about global-isel.
+try:
+    llvm_config_cmd = subprocess.Popen(
+        [os.path.join(llvm_tools_dir, 'llvm-config'), '--has-global-isel'],
+        stdout = subprocess.PIPE,
+        env=config.environment)
+except OSError:
+    print("Could not find llvm-config in " + llvm_tools_dir)
+    exit(42)
+
+if re.search(r'ON', llvm_config_cmd.stdout.read().decode('ascii')):
+    config.available_features.add('global-isel')
+llvm_config_cmd.wait()