[PATCH] D28593: Update loop branch_weight metadata after loop rotation.

[Xin Tong via Phabricator via llvm-commits]

trentxintong added a comment.

@danielcdh Its the true the cond is not changed, but the inputs to the condition has changed, before you were testing with index variable in the loop header, now u have 2 conditions and the SSA values you use in the conditions have changed, so the probability needs to be adjusted. I will explain more when i get to office.


https://reviews.llvm.org/D28593