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 -fno-stack-protector" } */
   3 /* { dg-additional-options "-mno-avx" { target ia32 } } */
   4 /* { dg-skip-if "No shrink-wrapping preformed" { x86_64-*-mingw* } } */
   5
   6 #include <string.h>
   7
   8 int c;
   9 int x[2000];
  10 __attribute__((regparm(1))) void foo (int a, int b)
  11  {
  12    int t[200];
  13    if (a == 0 || c == 0)
  14      return;
  15    memcpy (t, x + b, sizeof t);
  16    c = t[a];
  17  }
  18
  19 /* { dg-final { scan-rtl-dump "Performing shrink-wrapping" "pro_and_epilogue" } } */