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target/arm: Implement fp16 for Neon pairwise fp ops

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Convert the Neon pairwise fp ops to use a single gvic-style
helper to do the full operation instead of one helper call
for each 32-bit part. This allows us to use the same
framework to implement the fp16.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200828183354.27913-36-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2020-08-28 19:33:44 +01:00
parent 40fde72dda
commit 1dc587ee9b
3 changed files with 68 additions and 26 deletions
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45
target/arm/vec_helper.c
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@ -1771,3 +1771,48 @@ DO_ABA(gvec_uaba_s, uint32_t)
DO_ABA(gvec_uaba_d, uint64_t)
#undef DO_ABA
#define DO_NEON_PAIRWISE(NAME, OP) \
void HELPER(NAME##s)(void *vd, void *vn, void *vm, \
void *stat, uint32_t oprsz) \
{ \
float_status *fpst = stat; \
float32 *d = vd; \
float32 *n = vn; \
float32 *m = vm; \
float32 r0, r1; \
\
/* Read all inputs before writing outputs in case vm == vd */ \
r0 = float32_##OP(n[H4(0)], n[H4(1)], fpst); \
r1 = float32_##OP(m[H4(0)], m[H4(1)], fpst); \
\
d[H4(0)] = r0; \
d[H4(1)] = r1; \
} \
\
void HELPER(NAME##h)(void *vd, void *vn, void *vm, \
void *stat, uint32_t oprsz) \
{ \
float_status *fpst = stat; \
float16 *d = vd; \
float16 *n = vn; \
float16 *m = vm; \
float16 r0, r1, r2, r3; \
\
/* Read all inputs before writing outputs in case vm == vd */ \
r0 = float16_##OP(n[H2(0)], n[H2(1)], fpst); \
r1 = float16_##OP(n[H2(2)], n[H2(3)], fpst); \
r2 = float16_##OP(m[H2(0)], m[H2(1)], fpst); \
r3 = float16_##OP(m[H2(2)], m[H2(3)], fpst); \
\
d[H4(0)] = r0; \
d[H4(1)] = r1; \
d[H4(2)] = r2; \
d[H4(3)] = r3; \
}
DO_NEON_PAIRWISE(neon_padd, add)
DO_NEON_PAIRWISE(neon_pmax, max)
DO_NEON_PAIRWISE(neon_pmin, min)
#undef DO_NEON_PAIRWISE