diff options
Diffstat (limited to 'lib/CodeGen/MachineTraceMetrics.cpp')
| -rw-r--r-- | lib/CodeGen/MachineTraceMetrics.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/CodeGen/MachineTraceMetrics.cpp b/lib/CodeGen/MachineTraceMetrics.cpp index 86332c8a93a50..ef7e525e8165d 100644 --- a/lib/CodeGen/MachineTraceMetrics.cpp +++ b/lib/CodeGen/MachineTraceMetrics.cpp @@ -430,16 +430,17 @@ public: po_iterator_storage(LoopBounds &lb) : LB(lb) {} void finishPostorder(const MachineBasicBlock*) {} - bool insertEdge(const MachineBasicBlock *From, const MachineBasicBlock *To) { + bool insertEdge(Optional<const MachineBasicBlock *> From, + const MachineBasicBlock *To) { // Skip already visited To blocks. MachineTraceMetrics::TraceBlockInfo &TBI = LB.Blocks[To->getNumber()]; if (LB.Downward ? TBI.hasValidHeight() : TBI.hasValidDepth()) return false; // From is null once when To is the trace center block. if (From) { - if (const MachineLoop *FromLoop = LB.Loops->getLoopFor(From)) { + if (const MachineLoop *FromLoop = LB.Loops->getLoopFor(*From)) { // Don't follow backedges, don't leave FromLoop when going upwards. - if ((LB.Downward ? To : From) == FromLoop->getHeader()) + if ((LB.Downward ? To : *From) == FromLoop->getHeader()) return false; // Don't leave FromLoop. if (isExitingLoop(FromLoop, LB.Loops->getLoopFor(To))) |