> -----Original Message-----
> From: Christophe Lyon <christophe.l...@linaro.org>
> Sent: 29 January 2021 18:18
> To: Kyrylo Tkachov <kyrylo.tkac...@arm.com>
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH] arm: Auto-vectorization for MVE: vorn
>
> On Fri, 29 Jan 2021 at 16:03, Kyrylo Tkachov <kyrylo.tkac...@arm.com>
> wrote:
> >
> >
> >
> > > -----Original Message-----
> > > From: Gcc-patches <gcc-patches-boun...@gcc.gnu.org> On Behalf Of
> > > Christophe Lyon via Gcc-patches
> > > Sent: 29 January 2021 14:55
> > > To: gcc-patches@gcc.gnu.org
> > > Subject: [PATCH] arm: Auto-vectorization for MVE: vorn
> > >
> > > This patch enables MVE vornq instructions for auto-vectorization. MVE
> > > vornq insns in mve.md are modified to use ior instead of unspec
> > > expression to support ior<mode>3. The ior<mode>3 expander is added
> to
> > > vec-common.md
> > >
> > > 2021-01-29 Christophe Lyon <christophe.l...@linaro.org>
> > >
> > > gcc/
> > > * config/arm/iterators.md (supf): Remove VORNQ_S and VORNQ_U.
> > > (VORNQ): Remove.
> > > * config/arm/mve.md (mve_vornq_s<mode>): New entry for vorn
> > > instruction using expression ior.
> > > (mve_vornq_u<mode>): New expander.
> > > (mve_vornq_f<mode>): Use ior code instead of unspec.
> > > * config/arm/unspecs.md (VORNQ_S, VORNQ_U, VORNQ_F):
> > > Remove.
> > > * config/arm/vec-common.md (orn<mode>3): New expander.
> > >
> > > gcc/testsuite/
> > > * gcc.target/arm/simd/mve-vorn.c: Add vorn tests.
> > > ---
> > > gcc/config/arm/iterators.md | 3 +--
> > > gcc/config/arm/mve.md | 23 +++++++++++------
> > > gcc/config/arm/unspecs.md | 3 ---
> > > gcc/config/arm/vec-common.md | 8 ++++++
> > > gcc/testsuite/gcc.target/arm/simd/mve-vorn.c | 38
> > > ++++++++++++++++++++++++++++
> > > 5 files changed, 62 insertions(+), 13 deletions(-)
> > > create mode 100644 gcc/testsuite/gcc.target/arm/simd/mve-vorn.c
> > >
> > > diff --git a/gcc/config/arm/iterators.md b/gcc/config/arm/iterators.md
> > > index b902790..43aab23 100644
> > > --- a/gcc/config/arm/iterators.md
> > > +++ b/gcc/config/arm/iterators.md
> > > @@ -1293,7 +1293,7 @@ (define_int_attr supf [(VCVTQ_TO_F_S "s")
> > > (VCVTQ_TO_F_U "u") (VREV16Q_S "s")
> > > (VMULLBQ_INT_S "s") (VMULLBQ_INT_U "u")
> > > (VQADDQ_S "s")
> > > (VMULLTQ_INT_S "s") (VMULLTQ_INT_U "u")
> > > (VQADDQ_U "u")
> > > (VMULQ_N_S "s") (VMULQ_N_U "u") (VMULQ_S "s")
> > > - (VMULQ_U "u") (VORNQ_S "s") (VORNQ_U "u")
> > > + (VMULQ_U "u")
> > > (VQADDQ_N_S "s") (VQADDQ_N_U "u")
> > > (VQRSHLQ_N_S "s") (VQRSHLQ_N_U "u") (VQRSHLQ_S
> > > "s")
> > > (VQRSHLQ_U "u") (VQSHLQ_N_S "s")
> > > (VQSHLQ_N_U "u")
> > > @@ -1563,7 +1563,6 @@ (define_int_iterator VMULLBQ_INT
> > > [VMULLBQ_INT_U VMULLBQ_INT_S])
> > > (define_int_iterator VMULLTQ_INT [VMULLTQ_INT_U VMULLTQ_INT_S])
> > > (define_int_iterator VMULQ [VMULQ_U VMULQ_S])
> > > (define_int_iterator VMULQ_N [VMULQ_N_U VMULQ_N_S])
> > > -(define_int_iterator VORNQ [VORNQ_U VORNQ_S])
> > > (define_int_iterator VQADDQ [VQADDQ_U VQADDQ_S])
> > > (define_int_iterator VQADDQ_N [VQADDQ_N_S VQADDQ_N_U])
> > > (define_int_iterator VQRSHLQ [VQRSHLQ_S VQRSHLQ_U])
> > > diff --git a/gcc/config/arm/mve.md b/gcc/config/arm/mve.md
> > > index 465f71c..ec0ef7b 100644
> > > --- a/gcc/config/arm/mve.md
> > > +++ b/gcc/config/arm/mve.md
> > > @@ -1634,18 +1634,26 @@ (define_insn "mve_vmulq<mode>"
> > > ;;
> > > ;; [vornq_u, vornq_s])
> > > ;;
> > > -(define_insn "mve_vornq_<supf><mode>"
> > > +(define_insn "mve_vornq_s<mode>"
> > > [
> > > (set (match_operand:MVE_2 0 "s_register_operand" "=w")
> > > - (unspec:MVE_2 [(match_operand:MVE_2 1 "s_register_operand" "w")
> > > - (match_operand:MVE_2 2 "s_register_operand" "w")]
> > > - VORNQ))
> > > + (ior:MVE_2 (not:MVE_2 (match_operand:MVE_2 2
> > > "s_register_operand" "w"))
> > > + (match_operand:MVE_2 1 "s_register_operand" "w")))
> > > ]
> > > "TARGET_HAVE_MVE"
> > > - "vorn %q0, %q1, %q2"
> > > + "vorn\t%q0, %q1, %q2"
> > > [(set_attr "type" "mve_move")
> > > ])
> > >
> > > +(define_expand "mve_vornq_u<mode>"
> > > + [
> > > + (set (match_operand:MVE_2 0 "s_register_operand")
> > > + (ior:MVE_2 (not:MVE_2 (match_operand:MVE_2 2
> > > "s_register_operand"))
> > > + (match_operand:MVE_2 1 "s_register_operand")))
> > > + ]
> > > + "TARGET_HAVE_MVE"
> > > +)
> > > +
> > > ;;
> > > ;; [vorrq_s, vorrq_u])
> > > ;;
> > > @@ -2630,9 +2638,8 @@ (define_insn "mve_vmulq_n_f<mode>"
> > > (define_insn "mve_vornq_f<mode>"
> > > [
> > > (set (match_operand:MVE_0 0 "s_register_operand" "=w")
> > > - (unspec:MVE_0 [(match_operand:MVE_0 1 "s_register_operand" "w")
> > > - (match_operand:MVE_0 2 "s_register_operand" "w")]
> > > - VORNQ_F))
> > > + (ior:MVE_0 (not:MVE_0 (match_operand:MVE_0 2
> > > "s_register_operand" "w"))
> > > + (match_operand:MVE_0 1 "s_register_operand" "w")))
> > > ]
> > > "TARGET_HAVE_MVE && TARGET_HAVE_MVE_FLOAT"
> > > "vorn %q0, %q1, %q2"
> > > diff --git a/gcc/config/arm/unspecs.md b/gcc/config/arm/unspecs.md
> > > index c6ebb6f..4d47ab7 100644
> > > --- a/gcc/config/arm/unspecs.md
> > > +++ b/gcc/config/arm/unspecs.md
> > > @@ -622,7 +622,6 @@ (define_c_enum "unspec" [
> > > VMULLTQ_INT_S
> > > VMULQ_S
> > > VMULQ_N_S
> > > - VORNQ_S
> > > VQADDQ_S
> > > VQADDQ_N_S
> > > VQRSHLQ_S
> > > @@ -663,7 +662,6 @@ (define_c_enum "unspec" [
> > > VMULLTQ_INT_U
> > > VMULQ_U
> > > VMULQ_N_U
> > > - VORNQ_U
> > > VQADDQ_U
> > > VQADDQ_N_U
> > > VQRSHLQ_U
> > > @@ -734,7 +732,6 @@ (define_c_enum "unspec" [
> > > VMINNMVQ_F
> > > VMULQ_F
> > > VMULQ_N_F
> > > - VORNQ_F
> > > VSUBQ_F
> > > VADDLVAQ_U
> > > VADDLVAQ_S
> > > diff --git a/gcc/config/arm/vec-common.md b/gcc/config/arm/vec-
> > > common.md
> > > index 692b28e..444e4f5 100644
> > > --- a/gcc/config/arm/vec-common.md
> > > +++ b/gcc/config/arm/vec-common.md
> > > @@ -187,6 +187,14 @@ (define_expand "ior<mode>3"
> > > "ARM_HAVE_<MODE>_ARITH"
> > > )
> > >
> > > +(define_expand "orn<mode>3"
> > > + [(set (match_operand:VDQ 0 "s_register_operand" "")
> > > + (ior:VDQ (not:VDQ (match_operand:VDQ 2 "s_register_operand" ""))
> > > + (match_operand:VDQ 1 "s_register_operand" "")
> > > + ))]
> > > + "ARM_HAVE_<MODE>_ARITH"
> > > +)
> >
> > There's no standard name "orn" that is used by the midend, so I don't think
> this will ever be used.
> > Does the vecorisation work without it?
>
> Ha yes indeed, vectorization passes without the define_expand.
Ok, in which case this patch should only be changing the MVE vorn pattern away
from UNSPECs (and removing the unused unspecs)
Thanks,
Kyrill
>
> > Thanks,
> > Kyrill
> >
> > > +
> > > (define_expand "xor<mode>3"
> > > [(set (match_operand:VDQ 0 "s_register_operand" "")
> > > (xor:VDQ (match_operand:VDQ 1 "s_register_operand" "")
> > > diff --git a/gcc/testsuite/gcc.target/arm/simd/mve-vorn.c
> > > b/gcc/testsuite/gcc.target/arm/simd/mve-vorn.c
> > > new file mode 100644
> > > index 0000000..3f62d0a
> > > --- /dev/null
> > > +++ b/gcc/testsuite/gcc.target/arm/simd/mve-vorn.c
> > > @@ -0,0 +1,38 @@
> > > +/* { dg-do assemble } */
> > > +/* { dg-require-effective-target arm_v8_1m_mve_ok } */
> > > +/* { dg-add-options arm_v8_1m_mve } */
> > > +/* { dg-additional-options "-O3" } */
> > > +
> > > +#include <stdint.h>
> > > +
> > > +#define FUNC(SIGN, TYPE, BITS, NB, OP, NAME)
> > > \
> > > + void test_ ## NAME ##_ ## SIGN ## BITS ## x ## NB (TYPE##BITS##_t *
> > > __restrict__ dest, TYPE##BITS##_t *a, TYPE##BITS##_t *b) { \
> > > + int i; \
> > > + for (i=0; i<NB; i++) { \
> > > + dest[i] = a[i] OP b[i];
> > > \
> > > + }
> > > \
> > > +}
> > > +
> > > +/* 64-bit vectors. */
> > > +FUNC(s, int, 32, 2, | ~ , vorn)
> > > +FUNC(u, uint, 32, 2, | ~ , vorn)
> > > +FUNC(s, int, 16, 4, | ~ , vorn)
> > > +FUNC(u, uint, 16, 4, | ~ , vorn)
> > > +FUNC(s, int, 8, 8, | ~ , vorn)
> > > +FUNC(u, uint, 8, 8, | ~ , vorn)
> > > +
> > > +/* 128-bit vectors. */
> > > +FUNC(s, int, 32, 4, | ~ , vorn)
> > > +FUNC(u, uint, 32, 4, | ~ , vorn)
> > > +FUNC(s, int, 16, 8, | ~ , vorn)
> > > +FUNC(u, uint, 16, 8, | ~ , vorn)
> > > +FUNC(s, int, 8, 16, | ~ , vorn)
> > > +FUNC(u, uint, 8, 16, | ~ , vorn)
> > > +
> > > +/* MVE has only 128-bit vectors, so we can vectorize only half of the
> > > + functions above. */
> > > +/* Although float16 and float32 types are supported at assembly level,
> > > + we cannot test them with the '| ~ ' operator, so we check only the
> > > + integer variants. */
> > > +/* No need to test immediates as second operand, they are covered by
> vorn.
> > > */
> > > +/* { dg-final { scan-assembler-times {vorn\tq[0-9]+, q[0-9]+, q[0-9]+} 6
> > > } }
> */
> > > --
> > > 2.7.4
> >
