tree 8b22d63858e5390d12bcd117a614ce8276112240
parent 6f6c9d03984579bea6a24ec3ad0537abedacf195
author Eli Friedman <efriedma@quicinc.com> 1549931605 +0000
committer Eli Friedman <efriedma@quicinc.com> 1549931605 +0000

[LoopReroll] Fix reroll root legality checking.

The code checked that the first root was an appropriate distance from
the base value, but skipped checking the other roots. This could lead to
rerolling a loop that can't be legally rerolled (at least, not without
rewriting the loop in a non-trivial way).

Differential Revision: https://reviews.llvm.org/D56812


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353779 91177308-0d34-0410-b5e6-96231b3b80d8