gcc/testsuite/gcc.dg/tree-ssa/prefetch-9.c

   1 /* { dg-do compile { target { { i?86-*-* x86_64-*-* } && ia32 } } } */
   2 /* { dg-require-effective-target sse2 } */
   3 /* { dg-skip-if "" { i?86-*-* x86_64-*-* } { "-march=*" } { "-march=athlon" } } */
   4 /* { dg-options "-O2 -fprefetch-loop-arrays -march=athlon -msse2 -mfpmath=sse --param simultaneous-prefetches=100 -fdump-tree-aprefetch-details -fdump-tree-optimized" } */
   5
   6 #define K 1000000
   7 int a[K], b[K];
   8
   9 void test()
  10 {
  11   unsigned i;
  12
  13   /* Nontemporal store should be used for a, nontemporal prefetch for b.  */
  14   for (i = 0; i < K; i++)
  15     a[i] = b[i];
  16
  17 }
  18
  19 /* { dg-final { scan-tree-dump-times "Issued nontemporal prefetch" 1 "aprefetch" } } */
  20 /* { dg-final { scan-tree-dump-times "a nontemporal store" 1 "aprefetch" } } */
  21
  22 /* { dg-final { scan-tree-dump-times "builtin_prefetch" 1 "optimized" } } */
  23 /* { dg-final { scan-tree-dump "=\\{nt\\}" "optimized" } } */
  24 /* { dg-final { scan-tree-dump-times "__builtin_ia32_mfence" 1 "optimized" } } */
  25
  26 /* { dg-final { scan-assembler-times "prefetchnta" 1 } } */
  27 /* { dg-final { scan-assembler "movnti" } } */
  28 /* { dg-final { scan-assembler-times "mfence" 1 } } */
  29
  30 /* { dg-final { cleanup-tree-dump "aprefetch" } } */
  31 /* { dg-final { cleanup-tree-dump "optimized" } } */