Remove the make target ``regen-opcode-targets``, merge its work into ``regen-opcode`` which repeats most of the calculation. This simplifies the code for the build and reduces code duplication.

Inputs="@(_OpcodeSources)" Outputs="@(_OpcodeOutputs)"

DependsOnTargets="FindPythonForBuild">

<Message Text="Regenerate @(_OpcodeOutputs->'%(Filename)%(Extension)',' ')" Importance="high" />

<Exec Command="$(PythonForBuild) Tools\build\generate_opcode_h.py Lib\opcode.py Lib\_opcode_metadata.py Include\opcode.h Python/opcode_targets.h Include\internal\pycore_opcode.h Include\internal\pycore_intrinsics.h"

WorkingDirectory="$(PySourcePath)" />

</Target>

def main(opcode_py,

_opcode_metadata_py='Lib/_opcode_metadata.py',

outfile='Include/opcode.h',

opcode_targets_h='Python/opcode_targets.h',

internaloutfile='Include/internal/pycore_opcode.h'):

_opcode_metadata = get_python_module_dict(_opcode_metadata_py)

fobj.write(footer)

iobj.write(internal_footer)

with open(opcode_targets_h, "w") as f:

targets = ["_unknown_opcode"] * 256

for op, name in enumerate(opname_including_specialized):

if op < 256 and not name.startswith("<"):

targets[op] = f"TARGET_{name}"

f.write("static void *opcode_targets[256] = {\n")

f.write(",\n".join([f" &&{s}" for s in targets]))

f.write("\n};\n")

print(f"{outfile} regenerated from {opcode_py}")

if __name__ == '__main__':

main(sys.argv[1], sys.argv[2], sys.argv[3], sys.argv[4], sys.argv[5])