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gh-99876: make optimizer maintain the invariant that oparg == 0 for an instruction that does not have an arg #99877

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Merged
iritkatriel merged 7 commits into from
Nov 30, 2022
Merged

gh-99876: make optimizer maintain the invariant that oparg == 0 for an instruction that does not have an arg #99877

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5e4c199
gh-99876: make optimizer maintain the invariant that oparg == 0 for a…
iritkatriel Nov 29, 2022
a9bfc0d
magic number
iritkatriel Nov 29, 2022
dfff7b8
Revert "magic number"
iritkatriel Nov 29, 2022
e911001
fix INSTR_SET_OP1 macro to access arg once
iritkatriel Nov 29, 2022
1f2657c
Merge branch 'main' into instr_set_op
iritkatriel Nov 29, 2022
857db4e
implement Mark's suggestions
iritkatriel Nov 30, 2022
4d046a7
Merge remote-tracking branch 'upstream/main' into instr_set_op
iritkatriel Nov 30, 2022
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implement Mark's suggestions
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@iritkatriel
iritkatriel committed Nov 30, 2022
commit 857db4e34996231f876add2704669af43bbd5ac0
16 changes: 10 additions & 6 deletions Python/compile.c
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Original file line number Diff line number Diff line change
Expand Up @@ -174,16 +174,20 @@ struct instr {
/* One arg*/
#define INSTR_SET_OP1(I, OP, ARG) \
do { \
struct instr *__instr__ptr__ = (I); \
assert(HAS_ARG(OP) || ((ARG) == 0)); \
(__instr__ptr__)->i_opcode = (OP); \
(__instr__ptr__)->i_oparg = (ARG); \
assert(HAS_ARG(OP)); \
struct instr *_instr__ptr_ = (I); \
_instr__ptr_->i_opcode = (OP); \
_instr__ptr_->i_oparg = (ARG); \
} while (0);

/* No args*/
#define INSTR_SET_OP0(I, OP) \
assert(!HAS_ARG(OP)); \
INSTR_SET_OP1((I), (OP), 0);
do { \
assert(!HAS_ARG(OP)); \
struct instr *_instr__ptr_ = (I); \
_instr__ptr_->i_opcode = (OP); \
_instr__ptr_->i_oparg = 0; \
} while (0);

typedef struct exceptstack {
struct basicblock_ *handlers[CO_MAXBLOCKS+1];
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