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re: diff_optrace operand-mode VM filtering (argc>=1 subsequence)

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Operand-hook captures skip zero-operand ops (stmt markers, script-entry 0x259),
so the VM offset trace is filtered to argc>=1 instructions before diffing — same
subsequence both sides. +1 unit test. Default on; --full for a tick-mode capture.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
gamer147
2026-07-09 11:57:55 -04:00
parent d032431c73
commit 10a5f24c31
2 changed files with 28 additions and 7 deletions
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9
tools/test_diff_optrace.py
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@@ -1,6 +1,6 @@
# tools/test_diff_optrace.py (plain runner)
import sys
from diff_optrace import first_divergence, pick_scene_codebase
from diff_optrace import first_divergence, pick_scene_codebase, operand_filter
FAILS=[]
def check(c,m): (FAILS.append(m) or print("FAIL:",m)) if not c else print("ok:",m)
@@ -21,8 +21,13 @@ def test_pick_codebase_by_longest_common_prefix():
{"codebase":200,"offset":0},{"codebase":200,"offset":1},{"codebase":200,"offset":2}]
check(pick_scene_codebase(entries,[0,1,2])==200, "codebase matching VM prefix chosen")
def test_operand_filter_drops_zero_operand_ops():
# argc: 0x0->2, 0x5->0 (marker), 0xa->1, 0xf->0 => keep 0x0 and 0xa
argc = {0x0:2, 0x5:0, 0xa:1, 0xf:0}
check(operand_filter([0x0,0x5,0xa,0xf,0x5], argc)==[0x0,0xa], "operand_filter keeps only argc>=1 ops")
def main():
test_equal_no_divergence(); test_first_divergence_point(); test_prefix_shorter_vm()
test_pick_codebase_by_longest_common_prefix()
test_pick_codebase_by_longest_common_prefix(); test_operand_filter_drops_zero_operand_ops()
print("FAILURES:",len(FAILS)); return 1 if FAILS else 0
if __name__=="__main__": sys.exit(main())