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authorDan Gohman <gohman@apple.com>2011-12-12 19:42:25 +0000
committerDan Gohman <gohman@apple.com>2011-12-12 19:42:25 +0000
commit59a1c93e955c366084742ceca65e7b1afd8772ac (patch)
tree660b4fc42b627066d3fe2cfc686a59ddcd642e6b /tools/llvm-cov
parent37e7ecf52b2f4e282b58ab81e59adc8b9b4ec336 (diff)
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When computing reverse-CFG reverse-post-order, skip backedges, as
detected in the forward-CFG DFS. This prevents the reverse-CFG from visiting blocks inside loops after blocks that dominate them in the case where loops have multiple exits. No testcase, because this fixes a bug which in practice only shows up in a full optimizer run, due to the use-list order. This fixes rdar://10422791 and others. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146408 91177308-0d34-0410-b5e6-96231b3b80d8
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