[PATCH] D107770: [CallPromotion] Fix byval/inalloca handling

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

I'd prefer to prohibit the promotion.

In general, when we see a mismatch in the argument list, we want to be conservative; ABI rules are complicated, so sometimes different frontends will emit different IR signatures for a given function which should be ABI-compatible.  An argument list with byval is effectively a different signature from an argument list without byval.


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https://reviews.llvm.org/D107770