gcc/testsuite/gcc.target/i386/sw-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -mtune=generic -fshrink-wrap -fdump-rtl-pro_and_epilogue" } */
   3 /* { dg-skip-if "No shrink-wrapping preformed" { x86_64-*-mingw* } } */
   4
   5 #include <string.h>
   6
   7 int c;
   8 int x[2000];
   9 __attribute__((regparm(1))) void foo (int a, int b)
  10  {
  11    int t[200];
  12    if (a == 0 || c == 0)
  13      return;
  14    memcpy (t, x + b, sizeof t);
  15    c = t[a];
  16  }
  17
  18 /* { dg-final { scan-rtl-dump "Performing shrink-wrapping" "pro_and_epilogue" } } */