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comparison gcc/testsuite/gcc.dg/recip_sqrt_mult_1.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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111:04ced10e8804 131:84e7813d76e9
1 /* { dg-do compile } */
2 /* { dg-options "-Ofast -fdump-tree-recip" } */
3
4 double res, res2, tmp;
5 void
6 foo (double a, double b)
7 {
8 tmp = 1.0 / __builtin_sqrt (a);
9 res = tmp * tmp;
10 res2 = a * tmp;
11 }
12
13 /* { dg-final { scan-tree-dump "Optimizing reciprocal sqrt multiplications" "recip" } } */
14 /* { dg-final { scan-tree-dump "Replacing squaring multiplication" "recip" } } */
15 /* { dg-final { scan-tree-dump "Replacing original division" "recip" } } */