gcc/testsuite/gcc.target/i386/cet-notrack-icf-3.c

   1 /* Verify nocf_check function calls are not ICF optimized.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fcf-protection=none" } */
   4 /* { dg-final { scan-assembler-not "endbr" } } */
   5 /* { dg-final { scan-assembler-not "fn2:" } } */
   6 /* { dg-final { scan-assembler "set\[ \t]+fn2,fn1" } } */
   7 /* { dg-final { scan-assembler "set\[ \t]+fn3,fn1" } } */
   8
   9 int (*foo)(int);
  10
  11 typedef int (*type1_t) (int) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
  12 typedef int (*type2_t) (int);
  13
  14 static __attribute__((noinline)) int
  15 fn1 (int x)
  16 {
  17   return ((type2_t)foo)(x + 12);
  18 }
  19
  20 static __attribute__((noinline)) int
  21 fn2 (int x)
  22 {
  23   return ((type1_t)foo)(x + 12);
  24 }
  25
  26 static __attribute__((noinline)) int
  27 fn3 (int x)
  28 {
  29   return ((type2_t)foo)(x + 12);
  30 }
  31
  32 int
  33 fn4 (int x)
  34 {
  35   return fn1 (x) + fn2 (x) + fn3 (x);
  36 }