RE: [PATCH] [tree-optimization/110279] fix testcase pr110279-1.c

[Di Zhao OS <dizhao@os.amperecomputing.com>]

> -----Original Message-----
> From: Jeff Law <jeffreyalaw@gmail.com>
> Sent: Wednesday, May 22, 2024 11:14 PM
> To: Di Zhao OS <dizhao@os.amperecomputing.com>; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH] [tree-optimization/110279] fix testcase pr110279-1.c
> 
> 
> 
> On 5/22/24 5:46 AM, Di Zhao OS wrote:
> > The test case is for targets that support FMA. Previously
> > the "target" selector is missed in dg-final command.
> >
> > Tested on x86_64-pc-linux-gnu.
> >
> > Thanks
> > Di Zhao
> >
> > gcc/testsuite/ChangeLog:
> >
> >          * gcc.dg/pr110279-1.c: add target selector.
> Rather than list targets explicitly in the test, wouldn't it be better
> to have a common routine that could be used in other cases where we have
> a test that requires FMA?
> 
> So something similar to check_effective_target_scalar_all_fma?
> 
> 
> Jeff

Here is an updated version of the patch. Sorry I'm not very familiar
with the testsuite commands.

gcc/testsuite/ChangeLog:

        * gcc.dg/pr110279-1.c: add target selector.

---
gcc/testsuite/gcc.dg/pr110279-1.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/gcc.dg/pr110279-1.c b/gcc/testsuite/gcc.dg/pr110279-1.c
index a8c7257b28d..c4f94ea5810 100644
--- a/gcc/testsuite/gcc.dg/pr110279-1.c
+++ b/gcc/testsuite/gcc.dg/pr110279-1.c
@@ -1,4 +1,4 @@
-/* { dg-do compile } */
+/* { dg-do compile { target { scalar_all_fma || { i?86-*-* x86_64-*-* } } } } */
 /* { dg-options "-Ofast --param avoid-fma-max-bits=512 --param tree-reassoc-width=4 -fdump-tree-widening_mul-details" } */
 /* { dg-additional-options "-mcpu=generic" { target aarch64*-*-* } } */
 /* { dg-additional-options "-mfma" { target i?86-*-* x86_64-*-* } } */
@@ -64,4 +64,4 @@ foo3 (data_e a, data_e b, data_e c, data_e d)
   return result;
 }
 
-/* { dg-final { scan-tree-dump-times "Generated FMA" 3 "widening_mul"} } */
\ No newline at end of file
+/* { dg-final { scan-tree-dump-times "Generated FMA" 3 "widening_mul" } } */
-- 
2.25.1