RE: [PATCH 35/35 V2] arm: improve tests for vsetq_lane*

[Kyrylo Tkachov <Kyrylo.Tkachov@arm.com>]

> -----Original Message-----
> From: Andrea Corallo <andrea.corallo@arm.com>
> Sent: Thursday, November 24, 2022 2:44 PM
> To: Kyrylo Tkachov <Kyrylo.Tkachov@arm.com>
> Cc: gcc-patches@gcc.gnu.org; Richard Earnshaw
> <Richard.Earnshaw@arm.com>
> Subject: [PATCH 35/35 V2] arm: improve tests for vsetq_lane*
> 
> Kyrylo Tkachov <Kyrylo.Tkachov@arm.com> writes:
> 
> [...]
> 
> >> diff --git a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vsetq_lane_f16.c
> >> b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vsetq_lane_f16.c
> >> index e03e9620528..b5c9f4d5eb8 100644
> >> --- a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vsetq_lane_f16.c
> >> +++ b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vsetq_lane_f16.c
> >> @@ -1,15 +1,45 @@
> >> -/* { dg-skip-if "Incompatible float ABI" { *-*-* } { "-mfloat-abi=soft" } {""} }
> */
> >>  /* { dg-require-effective-target arm_v8_1m_mve_fp_ok } */
> >>  /* { dg-add-options arm_v8_1m_mve_fp } */
> >>  /* { dg-additional-options "-O2" } */
> >> +/* { dg-final { check-function-bodies "**" "" } } */
> >>
> >>  #include "arm_mve.h"
> >>
> >> +/*
> >> +**foo:
> >> +**	...
> >> +**	vmov.16	q[0-9]+\[[0-9]+\], (?:ip|fp|r[0-9]+)(?:	@.*|)
> >> +**	...
> >> +*/
> >>  float16x8_t
> >>  foo (float16_t a, float16x8_t b)
> >>  {
> >> -    return vsetq_lane_f16 (a, b, 0);
> >> +  return vsetq_lane_f16 (a, b, 1);
> >>  }
> >>
> >
> > Hmm, for these tests we should be able to scan for more specific codegen
> as we're setting individual lanes, so we should be able to scan for lane 1 in
> the vmov instruction, though it may need to be flipped for big-endian.
> > Thanks,
> > Kyrill
> 
> Hi Kyrill,
> 
> please find attached the updated version of this patch.
> 
> Big-endian should not be a problem as for my understanding is just not
> supported with MVE intrinsics.

Huh, that's right.
This version is ok.
Thanks!
Kyrill

> 
> Thanks!
> 
>   Andrea