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gh-105481: combine regen-opcode-targets with regen-opcode to avoid calculating the specialized opcodes in two places by iritkatriel · Pull Request #107540 · python/cpython · GitHub

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gh-105481: combine regen-opcode-targets with regen-opcode to avoid calculating the specialized opcodes in two places #107540

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Merged
iritkatriel merged 3 commits into from
Aug 1, 2023
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gh-105481: combine regen-opcode-targets with regen-opcode to avoid calculating the specialized opcodes in two places #107540

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gh-105481: combine regen-opcode-targets with regen-opcode to avoid ca…
iritkatriel Aug 1, 2023
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📜🤖 Added by blurb_it.
blurb-it[bot] Aug 1, 2023
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modernize
iritkatriel Aug 1, 2023
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11 changes: 3 additions & 8 deletions Makefile.pre.in
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Original file line number Diff line number Diff line change
Expand Up @@ -1316,7 +1316,7 @@ regen-limited-abi: all
# Regenerate all generated files

.PHONY: regen-all
regen-all: regen-cases regen-opcode regen-opcode-targets regen-typeslots \
regen-all: regen-cases regen-opcode regen-typeslots \
regen-token regen-ast regen-keyword regen-sre regen-frozen clinic \
regen-pegen-metaparser regen-pegen regen-test-frozenmain \
regen-test-levenshtein regen-global-objects
Expand Down Expand Up @@ -1428,8 +1428,10 @@ regen-opcode:
$(srcdir)/Lib/opcode.py \
$(srcdir)/Lib/_opcode_metadata.py \
$(srcdir)/Include/opcode.h.new \
$(srcdir)/Python/opcode_targets.h.new \
$(srcdir)/Include/internal/pycore_opcode.h.new
$(UPDATE_FILE) $(srcdir)/Include/opcode.h $(srcdir)/Include/opcode.h.new
$(UPDATE_FILE) $(srcdir)/Python/opcode_targets.h $(srcdir)/Python/opcode_targets.h.new
$(UPDATE_FILE) $(srcdir)/Include/internal/pycore_opcode.h $(srcdir)/Include/internal/pycore_opcode.h.new

.PHONY: regen-token
Expand Down Expand Up @@ -1531,13 +1533,6 @@ Objects/unicodeobject.o: $(srcdir)/Objects/unicodeobject.c $(UNICODE_DEPS)
Objects/dictobject.o: $(srcdir)/Objects/stringlib/eq.h
Objects/setobject.o: $(srcdir)/Objects/stringlib/eq.h

.PHONY: regen-opcode-targets
regen-opcode-targets:
# Regenerate Python/opcode_targets.h from Lib/opcode.py
# using Python/makeopcodetargets.py
$(PYTHON_FOR_REGEN) $(srcdir)/Python/makeopcodetargets.py \
$(srcdir)/Python/opcode_targets.h.new
$(UPDATE_FILE) $(srcdir)/Python/opcode_targets.h $(srcdir)/Python/opcode_targets.h.new

.PHONY: regen-cases
regen-cases:
Expand Down
1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Build/2023-08-01-17-12-53.gh-issue-105481.42nsDE.rst
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@@ -0,0 +1 @@
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.
4 changes: 1 addition & 3 deletions PCbuild/regen.targets
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Expand Up @@ -59,9 +59,7 @@
Inputs="@(_OpcodeSources)" Outputs="@(_OpcodeOutputs)"
DependsOnTargets="FindPythonForBuild">
<Message Text="Regenerate @(_OpcodeOutputs->'%(Filename)%(Extension)',' ')" Importance="high" />
<Exec Command="$(PythonForBuild) Tools\build\generate_opcode_h.py Lib\opcode.py Lib\_opcode_metadata.py Include\opcode.h Include\internal\pycore_opcode.h Include\internal\pycore_intrinsics.h"
WorkingDirectory="$(PySourcePath)" />
<Exec Command="$(PythonForBuild) Python\makeopcodetargets.py Python\opcode_targets.h"
<Exec Command="$(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>

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56 changes: 0 additions & 56 deletions Python/makeopcodetargets.py
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12 changes: 11 additions & 1 deletion Tools/build/generate_opcode_h.py
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Expand Up @@ -64,6 +64,7 @@ def get_python_module_dict(filename):
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)
Expand Down Expand Up @@ -161,9 +162,18 @@ def main(opcode_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])
main(sys.argv[1], sys.argv[2], sys.argv[3], sys.argv[4], sys.argv[5])
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