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gh-148211: decompose [_POP_TWO/_INSERT_2]_LOAD_CONST_INLINE_BORROW in JIT (GH-148357)

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Neko Asakura 2026-04-11 06:27:51 -04:00 • committed by GitHub
parent 639f218f9c
commit 72006a71b2
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8 changed files with 1151 additions and 1418 deletions
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Python/optimizer_analysis.c
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@ -677,9 +677,6 @@ const uint16_t op_without_push[MAX_UOP_ID + 1] = {
[_LOAD_FAST] = _NOP,
[_LOAD_FAST_BORROW] = _NOP,
[_LOAD_SMALL_INT] = _NOP,
[_POP_TOP_LOAD_CONST_INLINE] = _POP_TOP,
[_POP_TOP_LOAD_CONST_INLINE_BORROW] = _POP_TOP,
[_POP_TWO_LOAD_CONST_INLINE_BORROW] = _POP_TWO,
};
const bool op_skip[MAX_UOP_ID + 1] = {
@ -695,10 +692,7 @@ const uint16_t op_without_pop[MAX_UOP_ID + 1] = {
[_POP_TOP_INT] = _NOP,
[_POP_TOP_FLOAT] = _NOP,
[_POP_TOP_UNICODE] = _NOP,
[_POP_TOP_LOAD_CONST_INLINE] = _LOAD_CONST_INLINE,
[_POP_TOP_LOAD_CONST_INLINE_BORROW] = _LOAD_CONST_INLINE_BORROW,
[_POP_TWO] = _POP_TOP,
[_POP_TWO_LOAD_CONST_INLINE_BORROW] = _POP_TOP_LOAD_CONST_INLINE_BORROW,
[_POP_CALL_TWO] = _POP_CALL_ONE,
[_POP_CALL_ONE] = _POP_CALL,
};
@ -739,9 +733,9 @@ remove_unneeded_uops(_PyUOpInstruction *buffer, int buffer_size)
default:
{
// Cancel out pushes and pops, repeatedly. So:
// _LOAD_FAST + _POP_TWO_LOAD_CONST_INLINE_BORROW + _POP_TOP
// _LOAD_FAST + _POP_TWO + _LOAD_CONST_INLINE_BORROW + _POP_TOP
// ...becomes:
// _NOP + _POP_TOP + _NOP
// _NOP + _POP_TOP + _NOP + _NOP
while (op_without_pop[opcode] || op_without_pop_null[opcode]) {
_PyUOpInstruction *last = &buffer[pc - 1];
while (op_skip[last->opcode]) {