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Make ScalarEvolution::forgetLoop forget all contained loops too, because
authorDan Gohman <gohman@apple.com>
Fri, 29 Oct 2010 20:16:10 +0000 (20:16 +0000)
committerDan Gohman <gohman@apple.com>
Fri, 29 Oct 2010 20:16:10 +0000 (20:16 +0000)
commite60dcb5e974989998f1d008ea2a1caee29665d58
treed55348678404237b5502e4a04ab1c8415ebf5c1a
parentfea34d38b41c42bb5a4d1d6ab8f8c2e7635d8738
Make ScalarEvolution::forgetLoop forget all contained loops too, because
they may have ValuesAtScopes map entries referencing their outer loops.
This fixes a user-after-free reported in PR8471.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117698 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Analysis/ScalarEvolution.cpp