Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/tree-ssa/prefetch-7.c @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
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/* { dg-do compile { target { i?86-*-* x86_64-*-* } } } */ /* { dg-options "-O2 -fno-tree-loop-distribute-patterns -fprefetch-loop-arrays -march=amdfam10 --param simultaneous-prefetches=100 -fdump-tree-aprefetch-details -fdump-tree-optimized" } */ #define K 1000000 int a[K]; void test(int *p) { unsigned i; /* Nontemporal store should not be used here (only write and read temporal prefetches). */ for (i = 0; i < K - 10000; i++) a[i + 10000] = a[i]; /* Nontemporal store should not be used here (only write and read nontemporal prefetches). */ for (i = 0; i < K - 100000; i++) a[i + 100000] = a[i]; /* Nontemporal store should be used neither for a nor for p, as we do not know whether they alias or not. */ for (i = 0; i < K; i++) { a[i] = 0; *p++ = 1; } /* Nontemporal store should not be used for a, as we do not know whether its value will be reused or not. */ for (i = 0; i < 1000; i++) a[i] = 0; } /* { dg-final { scan-tree-dump-times "Issued prefetch" 5 "aprefetch" } } */ /* { dg-final { scan-tree-dump-times "Issued nontemporal prefetch" 2 "aprefetch" } } */ /* { dg-final { scan-tree-dump-times "a nontemporal store" 0 "aprefetch" } } */ /* { dg-final { scan-tree-dump-times "builtin_prefetch" 7 "optimized" } } */