Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/clang/utils/VtableTest/check-zvt

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+N_STRUCTS=300
+
+# Utility routine to "hand" check vtables.
+
+let i=1;
+while [ $i != $N_STRUCTS ]; do
+  sed -n "/^__ZTV.*s$i:/,/\.[sg][el]/p" test-clang.s | grep -v '\.[sg][el]' >test-clang-ztv
+  sed -n "/^__ZTV.*s$i:/,/\.[sg][el]/p" test-gcc.s | grep -v '\.[sg][el]' >test-gcc-ztv
+  diff -U3 test-gcc-ztv test-clang-ztv
+  if [ $? != 0 ]; then
+     echo "FAIL: s$i vtable"
+  else
+     echo "PASS: s$i vtable"
+  fi
+  let i=i+1
+done