Mercurial > hg > CbC > CbC_gcc
diff gcc/testsuite/gcc.dg/recip_sqrt_mult_5.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | |
children | 1830386684a0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/testsuite/gcc.dg/recip_sqrt_mult_5.c Thu Oct 25 07:37:49 2018 +0900 @@ -0,0 +1,20 @@ +/* { dg-do compile } */ +/* { dg-options "-Ofast -fdump-tree-recip" } */ + +/* We want to do the recip_sqrt transformations here there is already + a multiplication on the main path. */ + +double res, res2, tmp; +void +foo (double a, double b, int c, int d) +{ + tmp = 1.0 / __builtin_sqrt (a); + res = tmp * tmp; + + if (d) + res2 = a * tmp; +} + +/* { dg-final { scan-tree-dump "Optimizing reciprocal sqrt multiplications" "recip" } } */ +/* { dg-final { scan-tree-dump "Replacing squaring multiplication" "recip" } } */ +/* { dg-final { scan-tree-dump "Replacing original division" "recip" } } */