lit: Remove support for XTARGET.

- The XTARGET feature (inherited from old DG tests) was just confusing (and
   barely ever used). The same effect can now be achieved with a combination of
   the more useful REQUIRES and XFAIL.

llvm-svn: 166305

llvm/utils/lit/lit/ExampleTests/LLVM.InTree/test/Bar/bar-test.ll

@@ -1,3 +0,0 @@
-; RUN: true
-; XFAIL: *
-; XTARGET: darwin

llvm/utils/lit/lit/ExampleTests/LLVM.InTree/test/lit.cfg

@@ -77,7 +77,7 @@ for line in open(os.path.join(config.llvm_obj_root, 'test', 'site.exp')):
 
 excludes = []
 
-# Provide target_triple for use in XFAIL and XTARGET.
+# Provide target_triple for use in XFAIL.
 config.target_triple = site_exp['target_triplet']
 
 # Provide llvm_supports_target for use in local configs.

llvm/utils/lit/lit/ExampleTests/LLVM.OutOfTree/src/test/lit.cfg

@@ -77,7 +77,7 @@ for line in open(os.path.join(config.llvm_obj_root, 'test', 'site.exp')):
 
 excludes = []
 
-# Provide target_triple for use in XFAIL and XTARGET.
+# Provide target_triple for use in XFAIL.
 config.target_triple = site_exp['target_triplet']
 
 # Provide llvm_supports_target for use in local configs.

llvm/utils/lit/lit/TestRunner.py

@@ -370,32 +370,27 @@ def executeScript(test, litConfig, tmpBase, commands, cwd):
 
     return executeCommand(command, cwd=cwd, env=test.config.environment)
 
-def isExpectedFail(test, xfails, xtargets):
-    # If the xfail matches an available feature, it always fails.
+def isExpectedFail(test, xfails):
+    # Check if any of the xfails match an available feature or the target.
     for item in xfails:
+        # If this is the wildcard, it always fails.
+        if item == '*':
+            return True
+
+        # If this is an exact match for one of the features, it fails.
         if item in test.config.available_features:
             return True
 
-    # Otherwise, check if any xfail matches this target.
-    for item in xfails:
-        if item == '*' or item in test.suite.config.target_triple:
-            break
-    else:
-        return False
+        # If this is a part of the target triple, it fails.
+        if item in test.suite.config.target_triple:
+            return True
 
-    # If so, see if it is expected to pass on this target.
-    #
-    # FIXME: Rename XTARGET to something that makes sense, like XPASS.
-    for item in xtargets:
-        if item == '*' or item in test.suite.config.target_triple:
-            return False
-
-    return True
+    return False
 
 def parseIntegratedTestScript(test, normalize_slashes=False,
                               extra_substitutions=[]):
     """parseIntegratedTestScript - Scan an LLVM/Clang style integrated test
-    script and extract the lines to 'RUN' as well as 'XFAIL' and 'XTARGET'
+    script and extract the lines to 'RUN' as well as 'XFAIL' and 'REQUIRES'
     information. The RUN lines also will have variable substitution performed.
     """
 
@@ -436,7 +431,6 @@ def parseIntegratedTestScript(test, normalize_slashes=False,
     # Collect the test lines from the script.
     script = []
     xfails = []
-    xtargets = []
     requires = []
     for ln in open(sourcepath):
         if 'RUN:' in ln:
@@ -455,9 +449,6 @@ def parseIntegratedTestScript(test, normalize_slashes=False,
         elif 'XFAIL:' in ln:
             items = ln[ln.index('XFAIL:') + 6:].split(',')
             xfails.extend([s.strip() for s in items])
-        elif 'XTARGET:' in ln:
-            items = ln[ln.index('XTARGET:') + 8:].split(',')
-            xtargets.extend([s.strip() for s in items])
         elif 'REQUIRES:' in ln:
             items = ln[ln.index('REQUIRES:') + 9:].split(',')
             requires.extend([s.strip() for s in items])
@@ -496,7 +487,7 @@ def parseIntegratedTestScript(test, normalize_slashes=False,
         return (Test.UNSUPPORTED,
                 "Test requires the following features: %s" % msg)
 
-    isXFail = isExpectedFail(test, xfails, xtargets)
+    isXFail = isExpectedFail(test, xfails)
     return script,isXFail,tmpBase,execdir
 
 def formatTestOutput(status, out, err, exitCode, failDueToStderr, script):

llvm/utils/vim/llvm.vim

@@ -79,7 +79,6 @@ syn match  llvmSpecialComment /;\s*RUN:.*$/
 syn match  llvmSpecialComment /;\s*PR\d*\s*$/
 syn match  llvmSpecialComment /;\s*END\.\s*$/
 syn match  llvmSpecialComment /;\s*XFAIL:.*$/
-syn match  llvmSpecialComment /;\s*XTARGET:.*$/
 
 if version >= 508 || !exists("did_c_syn_inits")
   if version < 508