mirror of
https://github.com/python/cpython.git
synced 2024-11-24 00:38:00 +01:00
98 lines
3.2 KiB
Python
98 lines
3.2 KiB
Python
"""Generate uop metadata.
|
|
Reads the instruction definitions from bytecodes.c.
|
|
Writes the metadata to pycore_uop_metadata.h by default.
|
|
"""
|
|
|
|
import argparse
|
|
|
|
from analyzer import (
|
|
Analysis,
|
|
analyze_files,
|
|
)
|
|
from generators_common import (
|
|
DEFAULT_INPUT,
|
|
ROOT,
|
|
write_header,
|
|
cflags,
|
|
)
|
|
from stack import Stack
|
|
from cwriter import CWriter
|
|
from typing import TextIO
|
|
|
|
DEFAULT_OUTPUT = ROOT / "Include/internal/pycore_uop_metadata.h"
|
|
|
|
|
|
def generate_names_and_flags(analysis: Analysis, out: CWriter) -> None:
|
|
out.emit("extern const uint16_t _PyUop_Flags[MAX_UOP_ID+1];\n")
|
|
out.emit("extern const uint8_t _PyUop_Replication[MAX_UOP_ID+1];\n")
|
|
out.emit("extern const char * const _PyOpcode_uop_name[MAX_UOP_ID+1];\n\n")
|
|
out.emit("extern int _PyUop_num_popped(int opcode, int oparg);\n\n")
|
|
out.emit("#ifdef NEED_OPCODE_METADATA\n")
|
|
out.emit("const uint16_t _PyUop_Flags[MAX_UOP_ID+1] = {\n")
|
|
for uop in analysis.uops.values():
|
|
if uop.is_viable() and uop.properties.tier != 1:
|
|
out.emit(f"[{uop.name}] = {cflags(uop.properties)},\n")
|
|
|
|
out.emit("};\n\n")
|
|
out.emit("const uint8_t _PyUop_Replication[MAX_UOP_ID+1] = {\n")
|
|
for uop in analysis.uops.values():
|
|
if uop.replicated:
|
|
out.emit(f"[{uop.name}] = {uop.replicated},\n")
|
|
|
|
out.emit("};\n\n")
|
|
out.emit("const char *const _PyOpcode_uop_name[MAX_UOP_ID+1] = {\n")
|
|
for uop in sorted(analysis.uops.values(), key=lambda t: t.name):
|
|
if uop.is_viable() and uop.properties.tier != 1:
|
|
out.emit(f'[{uop.name}] = "{uop.name}",\n')
|
|
out.emit("};\n")
|
|
out.emit("int _PyUop_num_popped(int opcode, int oparg)\n{\n")
|
|
out.emit("switch(opcode) {\n")
|
|
for uop in analysis.uops.values():
|
|
if uop.is_viable() and uop.properties.tier != 1:
|
|
stack = Stack()
|
|
for var in reversed(uop.stack.inputs):
|
|
if var.peek:
|
|
break
|
|
stack.pop(var)
|
|
popped = (-stack.base_offset).to_c()
|
|
out.emit(f"case {uop.name}:\n")
|
|
out.emit(f" return {popped};\n")
|
|
out.emit("default:\n")
|
|
out.emit(" return -1;\n")
|
|
out.emit("}\n")
|
|
out.emit("}\n\n")
|
|
out.emit("#endif // NEED_OPCODE_METADATA\n\n")
|
|
|
|
|
|
def generate_uop_metadata(
|
|
filenames: list[str], analysis: Analysis, outfile: TextIO
|
|
) -> None:
|
|
write_header(__file__, filenames, outfile)
|
|
out = CWriter(outfile, 0, False)
|
|
with out.header_guard("Py_CORE_UOP_METADATA_H"):
|
|
out.emit("#include <stdint.h>\n")
|
|
out.emit('#include "pycore_uop_ids.h"\n')
|
|
generate_names_and_flags(analysis, out)
|
|
|
|
|
|
arg_parser = argparse.ArgumentParser(
|
|
description="Generate the header file with uop metadata.",
|
|
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
|
|
)
|
|
|
|
arg_parser.add_argument(
|
|
"-o", "--output", type=str, help="Generated code", default=DEFAULT_OUTPUT
|
|
)
|
|
|
|
arg_parser.add_argument(
|
|
"input", nargs=argparse.REMAINDER, help="Instruction definition file(s)"
|
|
)
|
|
|
|
if __name__ == "__main__":
|
|
args = arg_parser.parse_args()
|
|
if len(args.input) == 0:
|
|
args.input.append(DEFAULT_INPUT)
|
|
data = analyze_files(args.input)
|
|
with open(args.output, "w") as outfile:
|
|
generate_uop_metadata(args.input, data, outfile)
|