Clear RegSequences vector after eliminating REG_SEQUENCE instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103435 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index fde32da..4ccb661 100644
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -1179,5 +1179,6 @@
     MI->eraseFromParent();
   }
 
+  RegSequences.clear();
   return true;
 }