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GH-93621: reorder code in with/async-with exception exit path to reduce the size of the exception table (GH-93622)

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Irit Katriel 2022-06-10 17:53:34 +01:00 • committed by GitHub
parent 2ba0fd5767
commit cf730b595e
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3 changed files with 173 additions and 15 deletions
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20
Python/compile.c
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@ -5551,20 +5551,26 @@ compiler_visit_keyword(struct compiler *c, keyword_ty k)
static int
compiler_with_except_finish(struct compiler *c, basicblock * cleanup) {
UNSET_LOC(c);
basicblock *exit;
exit = compiler_new_block(c);
if (exit == NULL)
basicblock *suppress = compiler_new_block(c);
if (suppress == NULL) {
return 0;
ADDOP_JUMP(c, POP_JUMP_IF_TRUE, exit);
}
ADDOP_JUMP(c, POP_JUMP_IF_TRUE, suppress);
ADDOP_I(c, RERAISE, 2);
compiler_use_next_block(c, cleanup);
POP_EXCEPT_AND_RERAISE(c);
compiler_use_next_block(c, exit);
compiler_use_next_block(c, suppress);
ADDOP(c, POP_TOP); /* exc_value */
ADDOP(c, POP_BLOCK);
ADDOP(c, POP_EXCEPT);
ADDOP(c, POP_TOP);
ADDOP(c, POP_TOP);
basicblock *exit = compiler_new_block(c);
if (exit == NULL) {
return 0;
}
ADDOP_JUMP(c, JUMP, exit);
compiler_use_next_block(c, cleanup);
POP_EXCEPT_AND_RERAISE(c);
compiler_use_next_block(c, exit);
return 1;
}