On Sun, Jan 23, 2022 at 4:35 PM Hongtao Liu <crazy...@gmail.com> wrote:
>
> On Sun, Jan 23, 2022 at 8:28 PM H.J. Lu via Gcc-patches
> <gcc-patches@gcc.gnu.org> wrote:
> >
> > Return false for invalid mode on memory broadcast in bcst_mem_operand:
> >
> > (vec_duplicate:V16SF (mem/j:V4SF (reg/v/f:DI 109 [ b ])))
> >
> Yes, thanks.
I will also backport it to GCC 11 branch.
Thanks.
> > gcc/
> >
> > PR target/104188
> > * config/i386/predicates.md (bcst_mem_operand): Also check mode
> > of memory broadcast.
> >
> > gcc/testsuite/
> >
> > PR target/104188
> > * gcc.target/i386/pr104188.c: New test.
> > ---
> > gcc/config/i386/predicates.md | 2 +
> > gcc/testsuite/gcc.target/i386/pr104188.c | 70 ++++++++++++++++++++++++
> > 2 files changed, 72 insertions(+)
> > create mode 100644 gcc/testsuite/gcc.target/i386/pr104188.c
> >
> > diff --git a/gcc/config/i386/predicates.md b/gcc/config/i386/predicates.md
> > index eae6ab58e23..a8cc17a054d 100644
> > --- a/gcc/config/i386/predicates.md
> > +++ b/gcc/config/i386/predicates.md
> > @@ -1157,6 +1157,8 @@ (define_predicate "bcst_mem_operand"
> > (ior (match_test "TARGET_AVX512VL")
> > (match_test "GET_MODE_SIZE (GET_MODE (op)) == 64")))
> > (match_test "VALID_BCST_MODE_P (GET_MODE_INNER (GET_MODE (op)))")
> > + (match_test "GET_MODE (XEXP (op, 0))
> > + == GET_MODE_INNER (GET_MODE (op))")
> > (match_test "memory_operand (XEXP (op, 0), GET_MODE (XEXP (op,
> > 0)))")))
> >
> > ; Return true when OP is bcst_mem_operand or vector_memory_operand.
> > diff --git a/gcc/testsuite/gcc.target/i386/pr104188.c
> > b/gcc/testsuite/gcc.target/i386/pr104188.c
> > new file mode 100644
> > index 00000000000..c6f615b9625
> > --- /dev/null
> > +++ b/gcc/testsuite/gcc.target/i386/pr104188.c
> > @@ -0,0 +1,70 @@
> > +/* { dg-do run { target avx512f } } */
> > +/* { dg-options "-O2 -mfpmath=sse" } */
> > +
> > +#include <x86intrin.h>
> > +
> > +union U {
> > + float m[4][4];
> > + __m128 r[4];
> > + __m512 s;
> > +};
> > +
> > +__attribute__((noipa, target("avx512f")))
> > +void
> > +foo (union U *x, union U *a, union U *b)
> > +{
> > + __m512 c = _mm512_loadu_ps (&a->s);
> > + __m512 d = _mm512_broadcast_f32x4 (b->r[0]);
> > + __m512 e = _mm512_broadcast_f32x4 (b->r[1]);
> > + __m512 f = _mm512_broadcast_f32x4 (b->r[2]);
> > + __m512 g = _mm512_broadcast_f32x4 (b->r[3]);
> > + __m512 h = _mm512_mul_ps (_mm512_permute_ps (c, 0x00), d);
> > + h = _mm512_fmadd_ps (_mm512_permute_ps (c, 0x55), e, h);
> > + h = _mm512_fmadd_ps (_mm512_permute_ps (c, 0xaa), f, h);
> > + h = _mm512_fmadd_ps (_mm512_permute_ps (c, 0xff), g, h);
> > + _mm512_storeu_ps (&x->s, h);
> > +}
> > +
> > +__attribute__((noipa, target("avx512f")))
> > +void
> > +do_test (void)
> > +{
> > + union U a = { .m = { { 1.0f, 2.0f, 3.0f, 4.0f },
> > + { 5.0f, 6.0f, 7.0f, 8.0f },
> > + { 9.0f, 10.0f, 11.0f, 12.0f },
> > + { 13.0f, 14.0f, 15.0f, 16.0f } } };
> > + union U b = { .m = { { 17.0f, 18.0f, 19.0f, 20.0f },
> > + { 21.0f, 22.0f, 23.0f, 24.0f },
> > + { 25.0f, 26.0f, 27.0f, 28.0f },
> > + { 29.0f, 30.0f, 31.0f, 32.0f } } };
> > + union U c;
> > + foo (&c, &a, &b);
> > + if (c.m[0][0] != 250.0f
> > + || c.m[0][1] != 260.0f
> > + || c.m[0][2] != 270.0f
> > + || c.m[0][3] != 280.0f)
> > + __builtin_abort ();
> > + if (c.m[1][0] != 618.0f
> > + || c.m[1][1] != 644.0f
> > + || c.m[1][2] != 670.0f
> > + || c.m[1][3] != 696.0f)
> > + __builtin_abort ();
> > + if (c.m[2][0] != 986.0f
> > + || c.m[2][1] != 1028.0f
> > + || c.m[2][2] != 1070.0f
> > + || c.m[2][3] != 1112.0f)
> > + __builtin_abort ();
> > + if (c.m[3][0] != 1354.0f
> > + || c.m[3][1] != 1412.0f
> > + || c.m[3][2] != 1470.0f
> > + || c.m[3][3] != 1528.0f)
> > + __builtin_abort ();
> > +}
> > +
> > +int
> > +main ()
> > +{
> > + if (__builtin_cpu_supports ("avx512f"))
> > + do_test ();
> > + return 0;
> > +}
> > --
> > 2.34.1
> >
>
>
> --
> BR,
> Hongtao
--
H.J.
