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annotate gcc/testsuite/gcc.dg/tree-ssa/prefetch-3.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Prefetching used to prefer nonsensical unroll factor of 5 in this testcase. */
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2
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3 /* { dg-do compile { target { i?86-*-* x86_64-*-* } } } */
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4 /* { dg-options "-O2 -fprefetch-loop-arrays -march=amdfam10 -fdump-tree-aprefetch-details" } */
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5
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6 #define N 1000000
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7
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8 double a[N];
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9
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10 double test(void)
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11 {
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12 unsigned i;
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13 double sum = 0;
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14
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15 for (i = 0; i < N; i += 2)
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16 sum += (a[i] * a[i+1]);
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17
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18 return sum;
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19 }
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20
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21 /* { dg-final { scan-tree-dump-times "unroll factor 4" 1 "aprefetch" } } */