gcc/testsuite/gcc.dg/ipa/ipcp-cstagg-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -fdump-ipa-cp-details" } */
   3
   4 #define N 4
   5
   6 typedef int (* const A[N])(int);
   7
   8 typedef struct S
   9 {
  10   int add_offset;
  11   A a;
  12 } S;
  13
  14 extern const S *gs;
  15
  16 static int  __attribute__((noinline))
  17 bar (const S *f, int x)
  18 {
  19   gs = f;
  20   x = f->a[2](x);
  21   x = f->a[2](x);
  22   x = f->a[2](x);
  23   return x;
  24 }
  25
  26 static int
  27 zero (int x)
  28 {
  29   return 0;
  30 }
  31
  32 static int
  33 addone (int x)
  34 {
  35   return x + 1;
  36 }
  37
  38 static int
  39 sq (int x)
  40 {
  41   return x * x;
  42 }
  43
  44 static int
  45 cube (int x)
  46 {
  47   return x * x * x;
  48 }
  49
  50 static const S s = {64, {zero, addone, sq, cube}};
  51
  52 int
  53 g (int x)
  54 {
  55   return bar (&s, x);
  56 }
  57
  58 int
  59 obfuscate (int x)
  60 {
  61   return bar ((S *) 0, x);
  62 }
  63
  64 /* { dg-final { scan-ipa-dump-times "Discovered an indirect call to a known target" 3 "cp" } } */