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2 Commits

Author SHA1 Message Date
Dan Gohman
1d8973b499 Add the PR number to the test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53880 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-21 21:50:25 +00:00
Dan Gohman
7375fbcbf2 Fix a bug in LSR's dead-PHI cleanup. If a PHI has a def-use chain that 
leads into a cycle involving a different PHI, LSR got stuck running
around that cycle looking for the original PHI. To avoid this, keep
track of visited PHIs and stop searching if we see one more than once.
This fixes PR2570.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53879 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-21 21:45:02 +00:00