| """Build an experimental just-in-time compiler for CPython.""" |
| |
| import argparse |
| import pathlib |
| import shlex |
| import sys |
| |
| import _targets |
| |
| if __name__ == "__main__": |
| out = pathlib.Path.cwd().resolve() |
| comment = f"$ {shlex.join([pathlib.Path(sys.executable).name] + sys.argv)}" |
| parser = argparse.ArgumentParser(description=__doc__) |
| parser.add_argument( |
| "target", |
| nargs="+", |
| type=_targets.get_target, |
| help="a PEP 11 target triple to compile for", |
| ) |
| parser.add_argument( |
| "-d", "--debug", action="store_true", help="compile for a debug build of Python" |
| ) |
| parser.add_argument( |
| "-f", "--force", action="store_true", help="force the entire JIT to be rebuilt" |
| ) |
| parser.add_argument( |
| "-v", "--verbose", action="store_true", help="echo commands as they are run" |
| ) |
| args = parser.parse_args() |
| for target in args.target: |
| target.debug = args.debug |
| target.force = args.force |
| target.verbose = args.verbose |
| target.build( |
| out, |
| comment=comment, |
| stencils_h=f"jit_stencils-{target.triple}.h", |
| force=args.force, |
| ) |
| jit_stencils_h = out / "jit_stencils.h" |
| lines = [f"// {comment}\n"] |
| guard = "#if" |
| for target in args.target: |
| lines.append(f"{guard} {target.condition}\n") |
| lines.append(f'#include "jit_stencils-{target.triple}.h"\n') |
| guard = "#elif" |
| lines.append("#else\n") |
| lines.append('#error "unexpected target"\n') |
| lines.append("#endif\n") |
| body = "".join(lines) |
| # Don't touch the file if it hasn't changed (so we don't trigger a rebuild): |
| if not jit_stencils_h.is_file() or jit_stencils_h.read_text() != body: |
| jit_stencils_h.write_text(body) |
