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annotate gcc/testsuite/c-c++-common/unroll-2.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
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131
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1 /* { dg-do compile } */
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2 /* { dg-options "-O -fdump-tree-cunroll-details -fdump-rtl-loop2_unroll-details" } */
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3
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4 extern void bar (int);
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5
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6 int j;
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7
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8 void test (void)
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9 {
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10 #pragma GCC unroll 8
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11 for (unsigned long i = 1; i <= 8; ++i)
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12 bar(i);
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13 /* { dg-final { scan-tree-dump "11:.*: loop with 7 iterations completely unrolled" "cunroll" } } */
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14
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15 #pragma GCC unroll 8
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16 for (unsigned long i = 1; i <= 7; ++i)
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17 bar(i);
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18 /* { dg-final { scan-tree-dump "16:.*: loop with 6 iterations completely unrolled" "cunroll" } } */
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19
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20 #pragma GCC unroll 8
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21 for (unsigned long i = 1; i <= 15; ++i)
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22 bar(i);
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23 /* { dg-final { scan-rtl-dump "21:.*: optimized: loop unrolled 7 times" "loop2_unroll" } } */
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24
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25 #pragma GCC unroll 8
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26 for (unsigned long i = 1; i <= j; ++i)
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27 bar(i);
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28 /* { dg-final { scan-rtl-dump "26:.*: optimized: loop unrolled 7 times" "loop2_unroll" } } */
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29
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30 #pragma GCC unroll 7
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31 for (unsigned long i = 1; i <= j; ++i)
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32 bar(i);
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33 /* { dg-final { scan-rtl-dump "31:.*: optimized: loop unrolled 3 times" "loop2_unroll" } } */
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34
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35 unsigned long i = 0;
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36 #pragma GCC unroll 3
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37 do {
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38 bar(i);
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39 } while (++i < 9);
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40 /* { dg-final { scan-rtl-dump "3\[79\]:.*: optimized: loop unrolled 2 times" "loop2_unroll" } } */
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41 }