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target/arm: Implement MVE VABAV

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Implement the MVE VABAV insn, which computes absolute differences
between elements of two vectors and accumulates the result into
a general purpose register.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Peter Maydell 2021-08-13 17:11:53 +01:00
parent 688ba4cf33
commit 7f061c0ab9
4 changed files with 82 additions and 0 deletions
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26
target/arm/mve_helper.c
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@ -1320,6 +1320,32 @@ DO_VMAXMINV(vminavb, 1, int8_t, uint8_t, do_mina)
DO_VMAXMINV(vminavh, 2, int16_t, uint16_t, do_mina)
DO_VMAXMINV(vminavw, 4, int32_t, uint32_t, do_mina)
#define DO_VABAV(OP, ESIZE, TYPE) \
uint32_t HELPER(glue(mve_, OP))(CPUARMState *env, void *vn, \
void *vm, uint32_t ra) \
{ \
uint16_t mask = mve_element_mask(env); \
unsigned e; \
TYPE *m = vm, *n = vn; \
for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) { \
if (mask & 1) { \
int64_t n0 = n[H##ESIZE(e)]; \
int64_t m0 = m[H##ESIZE(e)]; \
uint32_t r = n0 >= m0 ? (n0 - m0) : (m0 - n0); \
ra += r; \
} \
} \
mve_advance_vpt(env); \
return ra; \
}
DO_VABAV(vabavsb, 1, int8_t)
DO_VABAV(vabavsh, 2, int16_t)
DO_VABAV(vabavsw, 4, int32_t)
DO_VABAV(vabavub, 1, uint8_t)
DO_VABAV(vabavuh, 2, uint16_t)
DO_VABAV(vabavuw, 4, uint32_t)
#define DO_VADDLV(OP, TYPE, LTYPE) \
uint64_t HELPER(glue(mve_, OP))(CPUARMState *env, void *vm, \
uint64_t ra) \