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| author | Dan Gohman <gohman@apple.com> | 2008-12-17 04:30:46 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-12-17 04:30:46 +0000 |
| commit | 89b64bd7e5032292adc308da0d867979734da8c1 (patch) | |
| tree | 4982f7e3c215207a339b97a93d65bf29261153be | |
| parent | fccf6dd377959560aafdde40b92fc749471eeae5 (diff) | |
| download | external_llvm-89b64bd7e5032292adc308da0d867979734da8c1.zip external_llvm-89b64bd7e5032292adc308da0d867979734da8c1.tar.gz external_llvm-89b64bd7e5032292adc308da0d867979734da8c1.tar.bz2 | |
Double the amount of memory reserved for SUnits. This is a
temporary workaround for an obscure bug. When node cloning is
used, it is possible that more SUnits will be created, and
if the SUnits std::vector has to reallocate, it will
invalidate all the graph edges.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61122 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp index 08d6702..4b6469b 100644 --- a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp +++ b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp @@ -71,7 +71,9 @@ void ScheduleDAGSDNodes::BuildSchedUnits() { // Reserve entries in the vector for each of the SUnits we are creating. This // ensure that reallocation of the vector won't happen, so SUnit*'s won't get // invalidated. - SUnits.reserve(DAG->allnodes_size()); + // FIXME: Multiply by 2 because we may clone nodes during scheduling. + // This is a temporary workaround. + SUnits.reserve(DAG->allnodes_size() * 2); // During scheduling, the NodeId field of SDNode is used to map SDNodes // to their associated SUnits by holding SUnits table indices. A value |