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The large code model is documented at http://www.x86-64.org/documentation/abi.pdf and says that calls should assume their target doesn't live within the 32-bit pc-relative offset that fits in the call instruction. To do this, we turn off the global-address->target-global-address conversion in X86TargetLowering::LowerCall(). The first attempt at this broke the lazy JIT because it can separate the movabs(imm->reg) from the actual call instruction. The lazy JIT receives the address of the movabs as a relocation and needs to record the return address from the call; and then when that call happens, it needs to patch the movabs with the newly-compiled target. We could thread the call instruction into the relocation and record the movabs<->call mapping explicitly, but that seems to require at least as much new complication in the code generator as this change. To fix this, we make lazy functions _always_ go through a call stub. You'd think we'd only have to force lazy calls through a stub on difficult platforms, but that turns out to break indirect calls through a function pointer. The right fix for that is to distinguish between calls and address-of operations on uncompiled functions, but that's complex enough to leave for someone else to do. Another attempt at this defined a new CALL64i pseudo-instruction, which expanded to a 2-instruction sequence in the assembly output and was special-cased in the X86CodeEmitter's emitInstruction() function. That broke indirect calls in the same way as above. This patch also removes a hack forcing Darwin to the small code model. Without far-call-stubs, the small code model requires things of the JITMemoryManager that the DefaultJITMemoryManager can't provide. Thanks to echristo for lots of testing! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88984 91177308-0d34-0410-b5e6-96231b3b80d8
184 lines
6.4 KiB
Python
184 lines
6.4 KiB
Python
import os
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import Test
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import TestRunner
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import Util
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class GoogleTest(object):
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def __init__(self, test_sub_dir, test_suffix):
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self.test_sub_dir = str(test_sub_dir)
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self.test_suffix = str(test_suffix)
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def getGTestTests(self, path):
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"""getGTestTests(path) - [name]
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Return the tests available in gtest executable."""
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lines = Util.capture([path, '--gtest_list_tests']).split('\n')
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nested_tests = []
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for ln in lines:
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if not ln.strip():
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continue
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prefix = ''
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index = 0
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while ln[index*2:index*2+2] == ' ':
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index += 1
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while len(nested_tests) > index:
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nested_tests.pop()
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ln = ln[index*2:]
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if ln.endswith('.'):
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nested_tests.append(ln)
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else:
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yield ''.join(nested_tests) + ln
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def getTestsInDirectory(self, testSuite, path_in_suite,
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litConfig, localConfig):
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source_path = testSuite.getSourcePath(path_in_suite)
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for filename in os.listdir(source_path):
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# Check for the one subdirectory (build directory) tests will be in.
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if filename != self.test_sub_dir:
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continue
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filepath = os.path.join(source_path, filename)
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for subfilename in os.listdir(filepath):
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if subfilename.endswith(self.test_suffix):
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execpath = os.path.join(filepath, subfilename)
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# Discover the tests in this executable.
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for name in self.getGTestTests(execpath):
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testPath = path_in_suite + (filename, subfilename, name)
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yield Test.Test(testSuite, testPath, localConfig)
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def execute(self, test, litConfig):
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testPath,testName = os.path.split(test.getSourcePath())
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while not os.path.exists(testPath):
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# Handle GTest parametrized and typed tests, whose name includes
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# some '/'s.
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testPath, namePrefix = os.path.split(testPath)
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testName = os.path.join(namePrefix, testName)
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cmd = [testPath, '--gtest_filter=' + testName]
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out, err, exitCode = TestRunner.executeCommand(cmd)
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if not exitCode:
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return Test.PASS,''
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return Test.FAIL, out + err
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###
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class FileBasedTest(object):
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def getTestsInDirectory(self, testSuite, path_in_suite,
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litConfig, localConfig):
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source_path = testSuite.getSourcePath(path_in_suite)
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for filename in os.listdir(source_path):
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filepath = os.path.join(source_path, filename)
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if not os.path.isdir(filepath):
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base,ext = os.path.splitext(filename)
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if ext in localConfig.suffixes:
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yield Test.Test(testSuite, path_in_suite + (filename,),
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localConfig)
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class ShTest(FileBasedTest):
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def __init__(self, execute_external = False):
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self.execute_external = execute_external
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def execute(self, test, litConfig):
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return TestRunner.executeShTest(test, litConfig,
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self.execute_external)
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class TclTest(FileBasedTest):
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def execute(self, test, litConfig):
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return TestRunner.executeTclTest(test, litConfig)
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###
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import re
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import tempfile
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class OneCommandPerFileTest:
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# FIXME: Refactor into generic test for running some command on a directory
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# of inputs.
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def __init__(self, command, dir, recursive=False,
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pattern=".*", useTempInput=False):
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if isinstance(command, str):
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self.command = [command]
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else:
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self.command = list(command)
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self.dir = str(dir)
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self.recursive = bool(recursive)
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self.pattern = re.compile(pattern)
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self.useTempInput = useTempInput
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def getTestsInDirectory(self, testSuite, path_in_suite,
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litConfig, localConfig):
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for dirname,subdirs,filenames in os.walk(self.dir):
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if not self.recursive:
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subdirs[:] = []
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if dirname == '.svn' or dirname in localConfig.excludes:
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continue
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for filename in filenames:
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if (not self.pattern.match(filename) or
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filename in localConfig.excludes):
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continue
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path = os.path.join(dirname,filename)
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suffix = path[len(self.dir):]
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if suffix.startswith(os.sep):
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suffix = suffix[1:]
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test = Test.Test(testSuite,
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path_in_suite + tuple(suffix.split(os.sep)),
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localConfig)
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# FIXME: Hack?
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test.source_path = path
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yield test
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def createTempInput(self, tmp, test):
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abstract
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def execute(self, test, litConfig):
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if test.config.unsupported:
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return (Test.UNSUPPORTED, 'Test is unsupported')
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cmd = list(self.command)
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# If using temp input, create a temporary file and hand it to the
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# subclass.
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if self.useTempInput:
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tmp = tempfile.NamedTemporaryFile(suffix='.cpp')
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self.createTempInput(tmp, test)
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tmp.flush()
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cmd.append(tmp.name)
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else:
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cmd.append(test.source_path)
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out, err, exitCode = TestRunner.executeCommand(cmd)
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diags = out + err
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if not exitCode and not diags.strip():
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return Test.PASS,''
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# Try to include some useful information.
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report = """Command: %s\n""" % ' '.join(["'%s'" % a
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for a in cmd])
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if self.useTempInput:
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report += """Temporary File: %s\n""" % tmp.name
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report += "--\n%s--\n""" % open(tmp.name).read()
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report += """Output:\n--\n%s--""" % diags
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return Test.FAIL, report
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class SyntaxCheckTest(OneCommandPerFileTest):
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def __init__(self, compiler, dir, extra_cxx_args=[], *args, **kwargs):
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cmd = [compiler, '-x', 'c++', '-fsyntax-only'] + extra_cxx_args
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OneCommandPerFileTest.__init__(self, cmd, dir,
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useTempInput=1, *args, **kwargs)
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def createTempInput(self, tmp, test):
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print >>tmp, '#include "%s"' % test.source_path
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