Also delete last unused val#.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70212 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/LiveInterval.cpp b/lib/CodeGen/LiveInterval.cpp
index 0450c355dce9787c76e752040cb99a6fc24f089e..c34b628d5fe580cd1a90f742cee668b104ca0347 100644 (file)
--- a/lib/CodeGen/LiveInterval.cpp
+++ b/lib/CodeGen/LiveInterval.cpp
@@ -629,6 +629,12 @@ void LiveInterval::MergeInClobberRanges(const LiveInterval &Clobbers,
       UnusedValNo = 0;
     }
   }
+
+  if (UnusedValNo) {
+    // Delete the last unused val#.
+    valnos.pop_back();
+    UnusedValNo->~VNInfo();
+  }
 }
 
 void LiveInterval::MergeInClobberRange(unsigned Start, unsigned End,