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-rw-r--r--lib/CodeGen/RegAllocBase.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/CodeGen/RegAllocBase.cpp b/lib/CodeGen/RegAllocBase.cpp
index b00eceb17f..b8d1d185e9 100644
--- a/lib/CodeGen/RegAllocBase.cpp
+++ b/lib/CodeGen/RegAllocBase.cpp
@@ -69,11 +69,14 @@ void RegAllocBase::verify() {
for (LiveIntervals::iterator liItr = LIS->begin(), liEnd = LIS->end();
liItr != liEnd; ++liItr) {
unsigned reg = liItr->first;
+ LiveInterval* li = liItr->second;
if (TargetRegisterInfo::isPhysicalRegister(reg)) continue;
if (!VRM->hasPhys(reg)) continue; // spilled?
+ if (li->empty()) continue; // unionVRegs will only be filled if li is
+ // non-empty
unsigned PhysReg = VRM->getPhys(reg);
if (!unionVRegs[PhysReg].test(reg)) {
- dbgs() << "LiveVirtReg " << reg << " not in union " <<
+ dbgs() << "LiveVirtReg " << PrintReg(reg, TRI) << " not in union " <<
TRI->getName(PhysReg) << "\n";
llvm_unreachable("unallocated live vreg");
}