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GH-141794: Limit size of generated machine code. (GH-142228)

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* Factor out bodies of the largest uops, to reduce jit code size.
* Factor out common assert, also reducing jit code size.
* Limit size of jitted code for a single executor to 1MB.
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Mark Shannon 2025-12-03 17:43:35 +00:00 • committed by GitHub
parent aea5531583
commit 62423c9c36
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14 changed files with 1406 additions and 1731 deletions
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4
Python/jit.c
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@ -60,6 +60,10 @@ jit_error(const char *message)
static unsigned char *
jit_alloc(size_t size)
{
if (size > PY_MAX_JIT_CODE_SIZE) {
jit_error("code too big; refactor bytecodes.c to keep uop size down, or reduce maximum trace length.");
return NULL;
}
assert(size);
assert(size % get_page_size() == 0);
#ifdef MS_WINDOWS