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13 changes: 12 additions & 1 deletion lld/test/lit.cfg.py
Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,18 @@
# testFormat: The test format to use to interpret tests.
#
# For now we require '&&' between commands, until they get globally killed and the test runner updated.
config.test_format = lit.formats.ShTest(not llvm_config.use_lit_shell)
# We prefer the lit internal shell which provides a better user experience on failures
# unless the user explicitly disables it with LIT_USE_INTERNAL_SHELL=0 env var.
use_lit_shell = True
lit_shell_env = os.environ.get("LIT_USE_INTERNAL_SHELL")
if lit_shell_env:
use_lit_shell = lit.util.pythonize_bool(lit_shell_env)

config.test_format = lit.formats.ShTest(execute_external=not use_lit_shell)

# TODO: Tests that REQUIRES: shell are unsupported by the lit internal shell
if use_lit_shell:
config.available_features.discard("shell")

# suffixes: A list of file extensions to treat as test files.
config.suffixes = [".ll", ".s", ".test", ".yaml", ".objtxt"]
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