Xinliang David Li 31ad54298e [PGO] Add Linux specific test cases for profile runtime
(second try with more strict config check)
Currently, only gc-sections related tests are added. Gold
linker currently is required due to PR19161 of bfd linker.

llvm-svn: 257456
2016-01-12 07:18:53 +00:00

38 lines
942 B
INI

import subprocess
def getRoot(config):
if not config.parent:
return config
return getRoot(config.parent)
def is_gold_linker_available():
if not config.gold_executable:
return False
try:
ld_cmd = subprocess.Popen([config.gold_executable, '--help'], stdout = subprocess.PIPE)
ld_out = ld_cmd.stdout.read().decode()
ld_cmd.wait()
except:
return False
if not '-plugin' in ld_out:
return False
clang_cmd = subprocess.Popen([config.clang, '-fuse-ld=gold', '-xc', '-'],
stdin = subprocess.PIPE,
stdout = subprocess.PIPE,
stderr = subprocess.PIPE)
clang_err = clang_cmd.communicate('int main() { return 0; }')[1]
if not 'invalid linker' in clang_err:
return True
return False
root = getRoot(config)
if root.host_os not in ['Linux'] or not is_gold_linker_available():
config.unsupported = True