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GH-104584: Miscellaneous fixes for -Xuops (GH-106908)

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Brandt Bucher 2023-07-20 09:35:39 -07:00 • committed by GitHub
parent 009e8f084c
commit 214a25dd81
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10 changed files with 67 additions and 18 deletions
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9
Python/bytecodes.c
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@ -2182,7 +2182,14 @@ dummy_func(
JUMPBY(1-oparg);
#if ENABLE_SPECIALIZATION
here[1].cache += (1 << OPTIMIZER_BITS_IN_COUNTER);
if (here[1].cache > tstate->interp->optimizer_backedge_threshold) {
if (here[1].cache > tstate->interp->optimizer_backedge_threshold &&
// Double-check that the opcode isn't instrumented or something:
here->op.code == JUMP_BACKWARD &&
// _PyOptimizer_BackEdge is going to change frame->prev_instr,
// which breaks line event calculations:
next_instr->op.code != INSTRUMENTED_LINE
)
{
OBJECT_STAT_INC(optimization_attempts);
frame = _PyOptimizer_BackEdge(frame, here, next_instr, stack_pointer);
if (frame == NULL) {