Nikita Popov c81dff3c30 [MemoryBuiltins] Add getFreedOperand() function (NFCI) ...

We currently assume in a number of places that free-like functions
free their first argument. This is true for all hardcoded free-like
functions, but with the new attribute-based design, the freed
argument is supposed to be indicated by the allocptr attribute.

To make sure we handle this correctly once allockind(free) is
respected, add a getFreedOperand() helper which returns the freed
argument, rather than just indicating whether the call frees *some*
argument.

This migrates most but not all users of isFreeCall() to the new
API. The remaining users are a bit more tricky.

2022-07-21 12:39:35 +02:00

42 KiB

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