Fix a bug with the LiveIntervals updating in the two-address pass found by
running ASCI_Purple/SMG2000 in the test-suite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175957 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index cbe07db..aca85b2 100644
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -370,7 +370,7 @@
SlotIndex useIdx = LIS->getInstructionIndex(MI);
LiveInterval::const_iterator I = LI.find(useIdx);
assert(I != LI.end() && "Reg must be live-in to use.");
- return SlotIndex::isSameInstr(I->end, useIdx);
+ return !I->end.isBlock() && SlotIndex::isSameInstr(I->end, useIdx);
}
return MI->killsRegister(Reg);