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5436372079
Summary: This change teaches ScalarEvolution::isLoopBackedgeGuardedByCond to look at edges within the loop body that dominate the latch. We don't do an exhaustive search for all possible edges, but only a quick walk up the dom tree. This re-lands r233447. r233447 was reverted because it caused massive compile-time regressions. This change has a fix for the same issue. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233829 91177308-0d34-0410-b5e6-96231b3b80d8 |
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