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author | Scott Michel <scottm@aero.org> | 2008-04-16 23:46:39 +0000 |
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committer | Scott Michel <scottm@aero.org> | 2008-04-16 23:46:39 +0000 |
commit | 4bf393a13e779d7a8eac3647df1781068a6dc732 (patch) | |
tree | 40afeb8833d9a8b5ef88c820c5f4e6848d8e918d /lib/Transforms/Utils/BreakCriticalEdges.cpp | |
parent | 03eb38848c9f880f8d97508b6a008f81cc4bdcb9 (diff) | |
download | llvm-4bf393a13e779d7a8eac3647df1781068a6dc732.tar.gz llvm-4bf393a13e779d7a8eac3647df1781068a6dc732.tar.bz2 llvm-4bf393a13e779d7a8eac3647df1781068a6dc732.tar.xz |
Workaround for PR2207, in which pred_iterator assert gets triggered due to a
wee problem in Xcode 2.[45]/gcc 4.0.1.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49831 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Utils/BreakCriticalEdges.cpp')
-rw-r--r-- | lib/Transforms/Utils/BreakCriticalEdges.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/Transforms/Utils/BreakCriticalEdges.cpp b/lib/Transforms/Utils/BreakCriticalEdges.cpp index 1a41d95a03..1ff92a8d03 100644 --- a/lib/Transforms/Utils/BreakCriticalEdges.cpp +++ b/lib/Transforms/Utils/BreakCriticalEdges.cpp @@ -103,8 +103,15 @@ bool llvm::isCriticalEdge(const TerminatorInst *TI, unsigned SuccNum, // If AllowIdenticalEdges is true, then we allow this edge to be considered // non-critical iff all preds come from TI's block. - for (; I != E; ++I) - if (*I != FirstPred) return true; + while (I != E) { + pred_const_iterator E1 = E; + if (*I != FirstPred) + return true; + // Note: leave this as is until no one ever compiles with either gcc 4.0.1 + // or Xcode 2. This seems to work around the pred_iterator assert in PR 2207 + E = pred_end(*I); + ++I; + } return false; } |