diff options
Diffstat (limited to 'llvm/lib/CodeGen/LiveIntervalUnion.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/LiveIntervalUnion.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/LiveIntervalUnion.cpp b/llvm/lib/CodeGen/LiveIntervalUnion.cpp index bedf22b5bad..4b9a2d302c0 100644 --- a/llvm/lib/CodeGen/LiveIntervalUnion.cpp +++ b/llvm/lib/CodeGen/LiveIntervalUnion.cpp @@ -111,9 +111,10 @@ void LiveIntervalUnion::verify(LiveVirtRegBitSet& VisitedVRegs) { // Assumes that segments are sorted by start position in both // LiveInterval and LiveSegments. void LiveIntervalUnion::Query::findIntersection(InterferenceResult &IR) const { - // Search until reaching the end of the LiveUnion segments. LiveInterval::iterator VirtRegEnd = VirtReg->end(); + if (IR.VirtRegI == VirtRegEnd) + return; while (IR.LiveUnionI.valid()) { // Slowly advance the live virtual reg iterator until we surpass the next // segment in LiveUnion. |
