Don't call getOperandConstraint() if operand index is greater than

TID->numOperands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35375 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index 6fcbcf24fcb67e2ff71b6b7c609cce1488f9ef60..2532fa31c845a78bbfbe70aadf94f73c89cbaed4 100644 (file)
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -965,7 +965,8 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM,
                   if (WasKill) {
                     const TargetInstrDescriptor *NTID =
                       NextMII->getInstrDescriptor();
-                    if (NTID->getOperandConstraint(UIdx, TOI::TIED_TO) == -1)
+                    if (UIdx >= NTID->numOperands ||
+                        NTID->getOperandConstraint(UIdx, TOI::TIED_TO) == -1)
                       MOU.setIsKill();
                   }
                   Spills.addLastUse(InReg, &(*NextMII));