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annotate gcc/testsuite/gcc.dg/recip_sqrt_mult_4.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents
children 1830386684a0
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131
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1 /* { dg-do compile } */
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2 /* { dg-options "-Ofast -fdump-tree-recip" } */
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3
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4 /* The main path doesn't have any multiplications.
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5 Avoid introducing them in the recip pass. */
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6
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7 double res, res2, tmp;
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8 void
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9 foo (double a, double b, int c, int d)
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10 {
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11 tmp = 1.0 / __builtin_sqrt (a);
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12 if (c)
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13 res = tmp * tmp;
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14
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15 if (d)
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16 res2 = a * tmp;
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17 }
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18
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19 /* { dg-final { scan-tree-dump-not "Optimizing reciprocal sqrt multiplications" "recip" } } */
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20 /* { dg-final { scan-tree-dump-not "Replacing squaring multiplication" "recip" } } */
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21 /* { dg-final { scan-tree-dump-not "Replacing original division" "recip" } } */