Sketch support for running KLEE tests using 'lit'.

 - Not working yet.

Also, ditch a bunch of unused substitution variables from the site.exp config
file.

git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@102872 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 133 insertions, 0 deletions

diff --git a/test/lit.cfg b/test/lit.cfg
new file mode 100644
index 00000000..39aaa824
--- /dev/null
+++ b/test/lit.cfg
@@ -0,0 +1,133 @@
+# -*- Python -*-
+
+# Configuration file for the 'lit' test runner.
+
+import os
+
+# name: The name of this test suite.
+config.name = 'KLEE'
+
+# testFormat: The test format to use to interpret tests.
+config.test_format = lit.formats.TclTest()
+
+# suffixes: A list of file extensions to treat as test files, this is actually
+# set by on_clone().
+config.suffixes = []
+
+# test_source_root: The root path where tests are located.
+config.test_source_root = os.path.dirname(__file__)
+
+# test_exec_root: The root path where tests should be run.
+klee_obj_root = getattr(config, 'klee_obj_root', None)
+if klee_obj_root is not None:
+    config.test_exec_root = os.path.join(klee_obj_root, 'test')
+
+# Tweak the PATH to include the tool dir.
+if klee_obj_root is not None:
+    klee_tools_dir = getattr(config, 'klee_tools_dir', None)
+    if not klee_tools_dir:
+        lit.fatal('No KLEE tools dir set!')
+    path = os.path.pathsep.join((klee_tools_dir, config.environment['PATH']))
+    config.environment['PATH'] = path
+
+# Propogate 'HOME' through the environment.
+config.environment['HOME'] = os.environ['HOME']
+
+###
+
+import os
+
+# Check that the object root is known.
+if config.test_exec_root is None:
+    lit.fatal('test execution root not set!')
+
+###
+
+# Load site data from DejaGNU's site.exp.
+import re
+site_exp = {}
+# FIXME: Implement lit.site.cfg.
+for line in open(os.path.join(config.klee_obj_root, 'test', 'site.exp')):
+    m = re.match('set ([^ ]+) "([^"]*)"', line)
+    if m:
+        site_exp[m.group(1)] = m.group(2)
+
+# Add substitutions.
+config.substitutions.append(('%llvmgcc_only', site_exp['llvmgcc']))
+for sub in ['llvmgcc', 'llvmgxx']:
+    if sub in ('llvmgcc', 'llvmgxx'):
+        config.substitutions.append(('%' + sub,
+                                     site_exp[sub] + ' -emit-llvm -w'))
+    # FIXME: This is a hack to avoid LLVMC tests failing due to a clang driver
+    #        warning when passing in "-fexceptions -fno-exceptions".
+    elif sub == 'compile_cxx':
+        config.substitutions.append(('%' + sub,
+                                  site_exp[sub].replace('-fno-exceptions', '')))
+    else:
+        config.substitutions.append(('%' + sub, site_exp[sub]))
+
+# FIXME: Give these proper paths.
+config.substitutions.append(('%kleaver', 'kleaver'))
+config.substitutions.append(('%klee', 'klee'))
+
+def klee_supports_posix_runtime():
+    return int(site_exp['ENABLE_POSIX_RUNTIME'])
+
+def klee_supports_uclibc():
+    return int(site_exp['ENABLE_UCLIBC'])
+
+excludes = []
+
+# Provide target_triple for use in XFAIL and XTARGET.
+config.target_triple = site_exp['target_triplet']
+
+# Provide on_clone hook for reading 'dg.exp'.
+import os
+simpleLibData = re.compile(r"""load_lib llvm.exp
+
+RunLLVMTests \[lsort \[glob -nocomplain \$srcdir/\$subdir/\*\.(.*)\]\]""",
+                           re.MULTILINE)
+conditionalLibData = re.compile(r"""load_lib llvm.exp
+
+if.*\[?(klee[^ ]*)\].*{
+ *RunLLVMTests \[lsort \[glob -nocomplain \$srcdir/\$subdir/\*\.(.*)\]\]
+\}""", re.MULTILINE)
+def on_clone(parent, cfg, for_path):
+    def addSuffixes(match):
+        if match[0] == '{' and match[-1] == '}':
+            cfg.suffixes = ['.' + s for s in match[1:-1].split(',')]
+        else:
+            cfg.suffixes = ['.' + match]
+
+    libPath = os.path.join(os.path.dirname(for_path),
+                           'dg.exp')
+    if not os.path.exists(libPath):
+        cfg.unsupported = True
+        return
+
+    # Reset unsupported, in case we inherited it.
+    cfg.unsupported = False
+    lib = open(libPath).read().strip()
+
+    # Check for a simple library.
+    m = simpleLibData.match(lib)
+    if m:
+        addSuffixes(m.group(1))
+        return
+
+    # Check for a conditional test set.
+    m = conditionalLibData.match(lib)
+    if m:
+        funcname,match = m.groups()
+        addSuffixes(match)
+
+        func = globals().get(funcname)
+        if not func:
+            lit.error('unsupported predicate %r' % funcname)
+        elif not func():
+            cfg.unsupported = True
+        return
+    # Otherwise, give up.
+    lit.error('unable to understand %r:\n%s' % (libPath, lib))
+
+config.on_clone = on_clone