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-rw-r--r--llvm/lib/CodeGen/RegAllocBase.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/RegAllocBase.cpp b/llvm/lib/CodeGen/RegAllocBase.cpp
index 93eeb9cba45..c204665dfd5 100644
--- a/llvm/lib/CodeGen/RegAllocBase.cpp
+++ b/llvm/lib/CodeGen/RegAllocBase.cpp
@@ -143,6 +143,7 @@ void RegAllocBase::allocatePhysRegs() {
continue;
}
DEBUG(dbgs() << "queuing new interval: " << *SplitVirtReg << "\n");
+ assert(!SplitVirtReg->empty() && "expecting non-empty interval");
assert(TargetRegisterInfo::isVirtualRegister(SplitVirtReg->reg) &&
"expect split value in virtual register");
enqueue(SplitVirtReg);
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