On Mon, 24 Sep 2018 at 20:46, Martin Jambor <mjam...@suse.cz> wrote:
>
> Hi,
>
> the test added to check whether _Float128 types are handled correctly by
> the new warning about suspicious calls to abs-like functions fails on
> many platforms. The patch below circumvents the problem by running on
> i686/x86_64 only. I understand that the proper solution would be to
> come up with a deja-gnu predicate and skip-if it was not provided but I
> think that for one simple test that is a bit of an overkill and testing
> it on x86_64 will provide all the test coverage we need.
>
> Tested on x86_64-linux and aarch64-linux, testing on i686-linux
> pending. OK for trunk?
>
> Thanks,
>
> Martin
>
>
>
> 2018-09-24 Martin Jambor <mjam...@suse.cz>
>
> PR testsuite/87339
> * gcc.dg/warn-abs-1.c: Do not test _Float128. Remove dg-skip-if.
> * gcc.target/i386/warn-abs-3.c: New test.
> ---
> gcc/testsuite/gcc.dg/warn-abs-1.c | 4 +---
> gcc/testsuite/gcc.target/i386/warn-abs-3.c | 12 ++++++++++++
> 2 files changed, 13 insertions(+), 3 deletions(-)
> create mode 100644 gcc/testsuite/gcc.target/i386/warn-abs-3.c
>
> diff --git a/gcc/testsuite/gcc.dg/warn-abs-1.c
> b/gcc/testsuite/gcc.dg/warn-abs-1.c
> index 129a3af8ac6..b494b14f4a9 100644
> --- a/gcc/testsuite/gcc.dg/warn-abs-1.c
> +++ b/gcc/testsuite/gcc.dg/warn-abs-1.c
> @@ -1,5 +1,4 @@
> /* { dg-do compile { target float128 } } */
Don't you want to remove the {target float128} part?
> -/* { dg-skip-if "incomplete long double support" { { newlib } &&
> large_long_double } } */
> /* { dg-options "-Wabsolute-value" } */
>
> #include <stdlib.h>
> @@ -41,12 +40,11 @@ tst_notfloat (int *pi, long *pl, complex double *pc)
> }
>
> void
> -tst_float_size (double *pd, long double *pld, _Float128 *pf128)
> +tst_float_size (double *pd, long double *pld)
> {
> *pd = fabsf (*pd); /* { dg-warning "may cause truncation of value" } */
> *pld = fabs (*pld); /* { dg-warning "may cause truncation of value" } */
> *pld = fabs ((double) *pld);
> - *pf128 = fabsl (*pf128); /* { dg-warning "may cause truncation of value" }
> */
> }
>
> void tst_notcomplex (int *pi, long *pl, long double *pld)
> diff --git a/gcc/testsuite/gcc.target/i386/warn-abs-3.c
> b/gcc/testsuite/gcc.target/i386/warn-abs-3.c
> new file mode 100644
> index 00000000000..21feaff7d8a
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/warn-abs-3.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target float128 } } */
> +/* { dg-options "-Wabsolute-value" } */
> +
> +#include <stdlib.h>
> +#include <inttypes.h>
> +#include <math.h>
> +
> +void
> +tst_float128_size (_Float128 *pf128)
> +{
> + *pf128 = fabsl (*pf128); /* { dg-warning "may cause truncation of value" }
> */
> +}
> --
> 2.18.0
>
