Fix a cut-paste-o so that the sample code is correct for my last note.

Also, switch to a more clear 'sink' function with its declaration to
avoid any confusion about 'g'. Thanks for the suggestion Frits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123113 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/README.txt

@@ -2143,7 +2143,8 @@ clang -O3 -fno-exceptions currently compiles this code:
 
 void f(int N) {
   std::vector<int> v(N);
-  g(v);
+
+  extern void sink(void*); sink(&v);
 }
 
 into
@@ -2198,7 +2199,10 @@ clang -O3 -fno-exceptions currently compiles this code:
 
 void f(int N) {
   std::vector<int> v(N);
-  g(v);
+  for (int k = 0; k < N; ++k)
+    v[k] = 0;
+
+  extern void sink(void*); sink(&v);
 }
 
 into almost the same as the previous note, but replace its final BB with: