[lit, python3] Update lit error logging to work correctly in python3 and other test fixes

Summary:
In Python2 'unicode' is a distinct type from 'str', but in Python3 'unicode' does not exist and instead all 'str' objects are Unicode string. This change updates the logic in the test logging for lit to correctly process each of the types, and more importantly, to not just fail in Python3.

This change also reverses the use of quotes in several of the cfg files. By using '""' we are guaranteeing that the resulting path will work correctly on Windows while "''" only works correctly sometimes. This also fixes one of the failing tests.

Reviewers: asmith, zturner

Subscribers: stella.stamenova, delcypher, llvm-commits

Differential Revision: https://reviews.llvm.org/D50397

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@339179 91177308-0d34-0410-b5e6-96231b3b80d8

utils/lit/lit/Test.py

@@ -378,10 +378,15 @@ class Test:
         fil.write(testcase_xml)
         if self.result.code.isFailure:
             fil.write(">\n\t<failure ><![CDATA[")
-            if type(self.result.output) == unicode:
-                encoded_output = self.result.output.encode("utf-8", 'ignore')
-            else:
+            # In Python2, 'str' and 'unicode' are distinct types, but in Python3, the type 'unicode' does not exist
+            # and instead 'bytes' is distinct
+            # in Python3, there's no unicode
+            if isinstance(self.result.output, str):
                 encoded_output = self.result.output
+            elif isinstance(self.result.output, bytes):
+                encoded_output = self.result.output.decode("utf-8", 'ignore')
+            else:
+                encoded_output = self.result.output.encode("utf-8", 'ignore')
             # In the unlikely case that the output contains the CDATA terminator
             # we wrap it by creating a new CDATA block
             fil.write(encoded_output.replace("]]>", "]]]]><![CDATA[>"))

utils/lit/lit/llvm/config.py

@@ -299,7 +299,7 @@ class LLVMConfig(object):
                 'count'), verbatim=True, unresolved='fatal'),
             ToolSubst(r'\| \bnot\b', command=FindTool('not'), verbatim=True, unresolved='fatal')]
 
-        self.config.substitutions.append(('%python', "'%s'" % (sys.executable)))
+        self.config.substitutions.append(('%python', '"%s"' % (sys.executable)))
 
         self.add_tool_substitutions(
             tool_patterns, [self.config.llvm_tools_dir])

utils/lit/tests/Inputs/shtest-env/lit.cfg

@@ -6,4 +6,4 @@ config.test_source_root = None
 config.test_exec_root = None
 config.environment['FOO'] = '1'
 config.environment['BAR'] = '2'
-config.substitutions.append(('%{python}', "'%s'" % (sys.executable)))
+config.substitutions.append(('%{python}', '"%s"' % (sys.executable)))

utils/lit/tests/Inputs/shtest-shell/lit.cfg

@@ -4,4 +4,4 @@ config.suffixes = ['.txt']
 config.test_format = lit.formats.ShTest()
 config.test_source_root = None
 config.test_exec_root = None
-config.substitutions.append(('%{python}', "'%s'" % (sys.executable)))
+config.substitutions.append(('%{python}', '"%s"' % (sys.executable)))

utils/lit/tests/Inputs/shtest-timeout/lit.cfg

@@ -29,4 +29,4 @@ config.test_exec_root = config.test_source_root
 config.target_triple = '(unused)'
 src_root = os.path.join(config.test_source_root, '..')
 config.environment['PYTHONPATH'] = src_root
-config.substitutions.append(('%{python}', "'%s'" % (sys.executable)))
+config.substitutions.append(('%{python}', '"%s"' % (sys.executable)))

utils/lit/tests/lit.cfg

@@ -40,7 +40,7 @@ config.substitutions.append(('%{inputs}', os.path.join(
             src_root, 'tests', 'Inputs')))
 config.substitutions.append(('%{lit}', "%%{python} %s" % (
             os.path.join(lit_path, 'lit.py'),)))
-config.substitutions.append(('%{python}', "'%s'" % (sys.executable)))
+config.substitutions.append(('%{python}', '"%s"' % (sys.executable)))
 
 
 # Enable coverage.py reporting, assuming the coverage module has been installed

utils/lit/tests/shtest-timeout.py

@@ -1,8 +1,5 @@
 # REQUIRES: python-psutil
 
-# PR33944
-# XFAIL: windows
-
 # FIXME: This test is fragile because it relies on time which can
 # be affected by system performance. In particular we are currently
 # assuming that `short.py` can be successfully executed within 2