nsz Git - libfirm/blob - ir/be/test/codegen/spillharness2.c

   1 void f(int);
   2
   3 volatile int G1, G2, G3, G4, G5;
   4
   5 volatile int VG;
   6
   7 void test()
   8 {
   9         int foo = rand();
  10
  11         // spill foo.
  12         int t1 = G1;
  13         int t2 = G2;
  14         int t3 = G3;
  15         int t4 = G4;
  16         int t5 = G5;
  17
  18         int bar = rand();
  19         int i;
  20
  21         G1 = t1; G2 = t2; G3 = t3; G4 = t4; G5 = t5;
  22         G1 = t1; G2 = t2; G3 = t3; G4 = t4; G5 = t5;
  23         G1 = t1; G2 = t2; G3 = t3; G4 = t4; G5 = t5;
  24
  25         i = 10000;
  26         while (i--) {
  27                 VG = foo;  // really keep foo in a reg.
  28                 f(bar);   // bar live
  29                 G1 = t1;
  30                 VG = foo;
  31                 G2 = t2;
  32                 VG = foo;
  33                 G3 = t3;
  34                 VG = foo;
  35                 G4 = t4;
  36                 VG = foo;
  37                 G5 = t5;
  38
  39         }
  40 }