[PATCH] D12107: Replace overflow check in loop vectorization with minimum loop iterations check

[Wei Mi via llvm-commits]

>> The big regression for the second test is caused by a minor alignment change. The alignment change prevents a cmp and jmp pair inside the kernel loop of the test from being macro-fused, which increases uops-retired events a lot. So the regression is caused by the side-effect of the patch and may not exist after some other changes.
>
> Wei, can you file a bug tracking the regression?
>
> David
>

I filed a bug here: https://llvm.org/bugs/show_bug.cgi?id=24570

Wei.