1 /* { dg-do compile } */ 2 /* { dg-skip-if "" { *-*-* } { "-O0" } { "" } } */ 3 /* { dg-additional-options "-fdump-tree-fre1" } */ 4 5 int x; main()6int main() 7 { 8 x = 0; 9 if (x) 10 { 11 for (int i = 0; i < 10; ++i) 12 x = i; 13 } 14 return x; 15 } 16 17 /* { dg-final { scan-tree-dump "return 0;" "fre1" } } */ 18