================
@@ -257,7 +257,17 @@ CaptureComponents
EarliestEscapeAnalysis::getCapturesBefore(
return isNotInCycle(I, &DT, LI, CI);
}
- return !isPotentiallyReachable(CaptureInst, I, nullptr, &DT, LI, CI);
+ if (isPotentiallyReachable(CaptureInst, I, nullptr, &DT, LI, CI))
+ return false;
+
+ // A `longjmp` may re-enter the function at any `returns_twice` call
+ // (e.g. `setjmp`), If the function contains such a call, conservatively
+ // treat the object as captured.
+ if (DT.getRoot()->getParent()->hasFnAttribute(
+ Attribute::ContainsReturnsTwiceCall))
+ return false;
----------------
midhuncodes7 wrote:
Agreed, reworked the patch to drop `contains_returns_twice_call` and cache the
check on `EarliestEscapeAnalysis` instead, reusing the existing
`Function::callsFunctionThatReturnsTwice()` scan
https://github.com/llvm/llvm-project/pull/212297
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