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target/arm: Implement SVE reverse within elements

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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180613015641.5667-9-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2018-06-15 14:57:15 +01:00 • committed by Peter Maydell
parent 792a557847
commit dae8fb9019
4 changed files with 93 additions and 7 deletions
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41
target/arm/sve_helper.c
View file

@ -238,6 +238,26 @@ static inline uint64_t expand_pred_s(uint8_t byte)
return word[byte & 0x11];
}
/* Swap 16-bit words within a 32-bit word. */
static inline uint32_t hswap32(uint32_t h)
{
return rol32(h, 16);
}
/* Swap 16-bit words within a 64-bit word. */
static inline uint64_t hswap64(uint64_t h)
{
uint64_t m = 0x0000ffff0000ffffull;
h = rol64(h, 32);
return ((h & m) << 16) | ((h >> 16) & m);
}
/* Swap 32-bit words within a 64-bit word. */
static inline uint64_t wswap64(uint64_t h)
{
return rol64(h, 32);
}
#define LOGICAL_PPPP(NAME, FUNC) \
void HELPER(NAME)(void *vd, void *vn, void *vm, void *vg, uint32_t desc) \
{ \
@ -616,6 +636,20 @@ DO_ZPZ(sve_neg_h, uint16_t, H1_2, DO_NEG)
DO_ZPZ(sve_neg_s, uint32_t, H1_4, DO_NEG)
DO_ZPZ_D(sve_neg_d, uint64_t, DO_NEG)
DO_ZPZ(sve_revb_h, uint16_t, H1_2, bswap16)
DO_ZPZ(sve_revb_s, uint32_t, H1_4, bswap32)
DO_ZPZ_D(sve_revb_d, uint64_t, bswap64)
DO_ZPZ(sve_revh_s, uint32_t, H1_4, hswap32)
DO_ZPZ_D(sve_revh_d, uint64_t, hswap64)
DO_ZPZ_D(sve_revw_d, uint64_t, wswap64)
DO_ZPZ(sve_rbit_b, uint8_t, H1, revbit8)
DO_ZPZ(sve_rbit_h, uint16_t, H1_2, revbit16)
DO_ZPZ(sve_rbit_s, uint32_t, H1_4, revbit32)
DO_ZPZ_D(sve_rbit_d, uint64_t, revbit64)
/* Three-operand expander, unpredicated, in which the third operand is "wide".
*/
#define DO_ZZW(NAME, TYPE, TYPEW, H, OP) \
@ -1587,13 +1621,6 @@ void HELPER(sve_rev_b)(void *vd, void *vn, uint32_t desc)
}
}
static inline uint64_t hswap64(uint64_t h)
{
uint64_t m = 0x0000ffff0000ffffull;
h = rol64(h, 32);
return ((h & m) << 16) | ((h >> 16) & m);
}
void HELPER(sve_rev_h)(void *vd, void *vn, uint32_t desc)
{
intptr_t i, j, opr_sz = simd_oprsz(desc);