Viewing file:  vec_permi.c (1.84 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O3 -mzarch -march=z13 -mzvector --save-temps" } */
/* { dg-do run { target { s390_z13_hw } } } */
/*
* The vector intrinsic vec_permi(a, b, c) chooses one of the two eight-byte
* vector elements in each of a and b, depending on the value of c. The valid
* values for c differ from the encoding for the M4 field in assembly and in the
* binary instruction.
*
* selection | c | encoding in assembly
* a[0] b[0] | 0 | 0 -> vmrhg
* a[0] b[1] | 1 | 1
* a[1] b[0] | 2 | 4
* a[1] b[1] | 3 | 5 -> vmrlg
*
* (i.e., indices a[i] b[j] are encoded for c as (i<<1) | j, yet for the
* M4 field as (i<<2) | j.
*/
/* { dg-final { scan-assembler-times "\tvmrhg\t" 3 } } */
/* { dg-final { scan-assembler-times "\tvmrlg\t" 3 } } */
/* { dg-final { scan-assembler-times "\tvpdi\t" 6 } } */
#include "vec-types.h"
#include <vecintrin.h>
#define GEN_PERMI_BITS(VEC_TYPE, BITS) \
VEC_TYPE __attribute__((noinline)) \
permi_##BITS##_##VEC_TYPE(VEC_TYPE a, VEC_TYPE b) { \
return vec_permi (a, b, (BITS)); }
#define GEN_PERMI(VEC_TYPE) \
GEN_PERMI_BITS(VEC_TYPE, 0); \
GEN_PERMI_BITS(VEC_TYPE, 1); \
GEN_PERMI_BITS(VEC_TYPE, 2); \
GEN_PERMI_BITS(VEC_TYPE, 3);
GEN_PERMI(v2di)
GEN_PERMI(uv2di)
GEN_PERMI(v2df)
#define CHECK_PERMI_BITS(VEC_TYPE, BITS) \
VEC_TYPE r##BITS = permi_##BITS##_##VEC_TYPE (a, b); \
if (r##BITS[0] != ((BITS) & 2) >> 1 \
|| r##BITS[1] != ((BITS) & 1) + 2) \
__builtin_abort();
#define CHECK_PERMI(VEC_TYPE) \
{ \
VEC_TYPE a = GEN_SEQ_VEC (VEC_TYPE, 0); \
VEC_TYPE b = GEN_SEQ_VEC (VEC_TYPE, 2); \
CHECK_PERMI_BITS (VEC_TYPE, 0); \
CHECK_PERMI_BITS (VEC_TYPE, 1); \
CHECK_PERMI_BITS (VEC_TYPE, 2); \
CHECK_PERMI_BITS (VEC_TYPE, 3); \
}
int
main ()
{
CHECK_PERMI (v2di);
CHECK_PERMI (uv2di);
CHECK_PERMI (v2df);
}
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