[PATCH] testsuite/arm: Add mve-vmul-scalar-1.c test

[Christophe Lyon]

Ping?

On Fri, 30 Apr 2021 at 16:06, Christophe Lyon
<christophe.lyon@linaro.org> wrote:
>
> Support for vmul has been present for a while, but it was lacking a
> test for the scalar variant.
>
> This patch adds one, precisely noting that we do not yet use the T2
> variants of vmul, which take a scalar as final argument.
>
> 2021-04-22  Christophe Lyon  <christophe.lyon@linaro.org>
>
>         gcc/testsuite/
>         * gcc.target/arm/simd/mve-vmul-scalar-1: New.
> ---
>  .../gcc.target/arm/simd/mve-vmul-scalar-1.c        | 60 ++++++++++++++++++++++
>  1 file changed, 60 insertions(+)
>  create mode 100644 gcc/testsuite/gcc.target/arm/simd/mve-vmul-scalar-1.c
>
> diff --git a/gcc/testsuite/gcc.target/arm/simd/mve-vmul-scalar-1.c b/gcc/testsuite/gcc.target/arm/simd/mve-vmul-scalar-1.c
> new file mode 100644
> index 0000000..22be452
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/arm/simd/mve-vmul-scalar-1.c
> @@ -0,0 +1,60 @@
> +/* { dg-do compile } */
> +/* { dg-require-effective-target arm_v8_1m_mve_fp_ok } */
> +/* { dg-add-options arm_v8_1m_mve_fp } */
> +/* { dg-additional-options "-O3" } */
> +
> +#include <stdint.h>
> +
> +#define FUNC_IMM(SIGN, TYPE, BITS, NB, OP, NAME)                       \
> +  void test_ ## NAME ##_ ## SIGN ## BITS ## x ## NB (TYPE##BITS##_t * __restrict__ dest, \
> +                                                    TYPE##BITS##_t *a) { \
> +    int i;                                                             \
> +    for (i=0; i<NB; i++) {                                             \
> +      dest[i] = a[i] OP 5;                                             \
> +    }                                                                  \
> +}
> +
> +/* 128-bit vectors.  */
> +FUNC_IMM(s, int, 32, 4, *, vmulimm)
> +FUNC_IMM(u, uint, 32, 4, *, vmulimm)
> +FUNC_IMM(s, int, 16, 8, *, vmulimm)
> +FUNC_IMM(u, uint, 16, 8, *, vmulimm)
> +FUNC_IMM(s, int, 8, 16, *, vmulimm)
> +FUNC_IMM(u, uint, 8, 16, *, vmulimm)
> +
> +/* For the moment we do not select the T2 vmul variant operating on a scalar
> +   final argument.  */
> +/* { dg-final { scan-assembler-times {vmul\.i32\tq[0-9]+, q[0-9]+, r[0-9]+} 2 { xfail *-*-* } } } */
> +/* { dg-final { scan-assembler-times {vmul\.i16\tq[0-9]+, q[0-9]+, r[0-9]+} 2 { xfail *-*-* } } } */
> +/* { dg-final { scan-assembler-times {vmul\.i8\tq[0-9]+, q[0-9]+, r[0-9]+} 2 { xfail *-*-* } } } */
> +
> +void test_vmul_f32 (float * dest, float * a, float * b) {
> +  int i;
> +  for (i=0; i<4; i++) {
> +    dest[i] = a[i] * b[1];
> +  }
> +}
> +void test_vmulimm_f32 (float * dest, float * a) {
> +  int i;
> +  for (i=0; i<4; i++) {
> +    dest[i] = a[i] * 5.0;
> +  }
> +}
> +/* { dg-final { scan-assembler-times {vmul\.f32\tq[0-9]+, q[0-9]+, r[0-9]+} 2 { xfail *-*-* } } } */
> +
> +void test_vmul_f16 (__fp16 * dest, __fp16 * a, __fp16 * b) {
> +  int i;
> +  for (i=0; i<8; i++) {
> +    dest[i] = a[i] * b[i];
> +  }
> +}
> +
> +/* Note that dest[i] = a[i] * 5.0f16 is not vectorized.  */
> +void test_vmulimm_f16 (__fp16 * dest, __fp16 * a) {
> +  int i;
> +  __fp16 b = 5.0f16;
> +  for (i=0; i<8; i++) {
> +    dest[i] = a[i] * b;
> +  }
> +}
> +/* { dg-final { scan-assembler-times {vmul\.f16\tq[0-9]+, q[0-9]+, r[0-9]+} 2 { xfail *-*-* } } } */
> --
> 2.7.4
>