[PATCH] D118066: [SimplifyCFG] Don't speculatively execute preductably-taken block

[Kai Luo via Phabricator via llvm-commits]

lkail added a comment.

> If we predict it to be taken, isn't flattening it, and incurring the cost of a select

I think the cost of branch instruction(not including mispredict cost) can't be ignored. The fallthrough basicblock doesn't need branch instruction, but the other does. If we got multiple selects, branch might be a win.


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https://reviews.llvm.org/D118066