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-rw-r--r--utils/TableGen/CodeGenSchedule.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/utils/TableGen/CodeGenSchedule.cpp b/utils/TableGen/CodeGenSchedule.cpp
index 503dfc27aa..8015e34c64 100644
--- a/utils/TableGen/CodeGenSchedule.cpp
+++ b/utils/TableGen/CodeGenSchedule.cpp
@@ -891,6 +891,7 @@ void CodeGenSchedModels::inferFromItinClass(Record *ItinClassDef,
/// Infer classes from per-processor InstReadWrite definitions.
void CodeGenSchedModels::inferFromInstRWs(unsigned SCIdx) {
for (unsigned I = 0, E = SchedClasses[SCIdx].InstRWs.size(); I != E; ++I) {
+ assert(SchedClasses[SCIdx].InstRWs.size() == E && "InstrRWs was mutated!");
Record *Rec = SchedClasses[SCIdx].InstRWs[I];
const RecVec *InstDefs = Sets.expand(Rec);
RecIter II = InstDefs->begin(), IE = InstDefs->end();