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annotate gcc/testsuite/gcc.dg/pr80131-1.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-require-effective-target int32plus } */
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3 /* { dg-options "-fdump-tree-gimple" } */
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4
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5 /* Checks the simplification of:
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6 1 << (C - x) to (1 << C) >> x, where C = precision (type) - 1
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7 f1 is not simplified but f2, f3 and f4 are. */
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8
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9 __INT64_TYPE__ f1 (__INT64_TYPE__ i)
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10 {
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11 return (__INT64_TYPE__)1 << (31 - i);
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12 }
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13
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14 __INT64_TYPE__ f2 (__INT64_TYPE__ i)
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15 {
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16 return (__INT64_TYPE__)1 << (63 - i);
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17 }
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18
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19 __UINT64_TYPE__ f3 (__INT64_TYPE__ i)
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20 {
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21 return (__UINT64_TYPE__)1 << (63 - i);
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22 }
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23
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24 __INT32_TYPE__ f4 (__INT32_TYPE__ i)
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25 {
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26 return (__INT32_TYPE__)1 << (31 - i);
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27 }
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28
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29 /* { dg-final { scan-tree-dump-times "= 31 -" 1 "gimple" } } */
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30 /* { dg-final { scan-tree-dump-times "9223372036854775808 >>" 2 "gimple" } } */
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31 /* { dg-final { scan-tree-dump "2147483648 >>" "gimple" } } */