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path: root/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
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Diffstat (limited to 'lib/CodeGen/SelectionDAG/ScheduleDAG.cpp')
-rw-r--r--lib/CodeGen/SelectionDAG/ScheduleDAG.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
index 37beff9619..c9fc812259 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
@@ -597,10 +597,11 @@ void ScheduleDAG::EmitSubregNode(SDNode *Node,
// Grab the destination register
const TargetRegisterClass *DRC = 0;
DRC = RegInfo.getRegClass(VRBase);
- assert(SRC == DRC &&
+ assert(SRC && DRC && SRC == DRC &&
"Source subregister and destination must have the same class");
} else {
// Create the reg
+ assert(SRC && "Couldn't find source register class");
VRBase = RegInfo.createVirtualRegister(SRC);
}