diff options
| author | Hans Wennborg <hans@hanshq.net> | 2015-04-24 16:53:55 +0000 |
|---|---|---|
| committer | Hans Wennborg <hans@hanshq.net> | 2015-04-24 16:53:55 +0000 |
| commit | ec679a8b3bbf5ac0f9dd71df3fbc6d6985af03a9 (patch) | |
| tree | 1c7ef87c197ffa11b8377b27db53a73e3e451dd1 /llvm/lib | |
| parent | cbdd0dc88a1fcf6baa494b823cb2559c01578bff (diff) | |
| download | bcm5719-llvm-ec679a8b3bbf5ac0f9dd71df3fbc6d6985af03a9.tar.gz bcm5719-llvm-ec679a8b3bbf5ac0f9dd71df3fbc6d6985af03a9.zip | |
Switch lowering: fix APInt overflow causing infinite loop / OOM
llvm-svn: 235729
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index 14421834a55..01419cf8fa1 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -7236,7 +7236,8 @@ bool SelectionDAGBuilder::buildJumpTable(CaseClusterVector &Clusters, for (uint64_t J = 0; J < Gap; J++) Table.push_back(DefaultMBB); } - for (APInt X = Low; X.sle(High); ++X) + uint64_t ClusterSize = (High - Low).getLimitedValue() + 1; + for (uint64_t J = 0; J < ClusterSize; ++J) Table.push_back(Clusters[I].MBB); JTWeights[Clusters[I].MBB] += Clusters[I].Weight; } |
