[PATCH] D107581: [LegalizeTypes] Add a simple expansion for SMULO when a libcall isn't available.

[Freddy, Ye via Phabricator via llvm-commits]

FreddyYe added a comment.

I haven't taken a look into gcc's generated code. Do you think gcc implements i256 signed mul overflow check in this same way? Hope you know...


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https://reviews.llvm.org/D107581