tree 34370c564402f71c3fa514ede9a90b0b56cd25d6
parent b14a757a51365ac02a778b87f6bceb958ed4a0bf
author Michael Kruse <llvm@meinersbur.de> 1557513493 +0000
committer Michael Kruse <llvm@meinersbur.de> 1557513493 +0000

[ZoneAlgo] Fix PHI inconsistency in invalid contexts.

PHI nodes (reads) could point to multiple instances of predecessor
blocks (PHI writes) when in an invalid context. Fix by removing PHI
instances that are in an invalid or ouside assumed context.

This fixes llvm.org/PR41656.

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@360454 91177308-0d34-0410-b5e6-96231b3b80d8