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target/arm: Implement SVE Floating Point Accumulating Reduction Group

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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180627043328.11531-9-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2018-06-29 15:11:04 +01:00 • committed by Peter Maydell
parent 6ceabaad11
commit 7f9ddf64d5
4 changed files with 113 additions and 0 deletions
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56
target/arm/sve_helper.c
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@ -2811,6 +2811,62 @@ uint32_t HELPER(sve_while)(void *vd, uint32_t count, uint32_t pred_desc)
return predtest_ones(d, oprsz, esz_mask);
}
uint64_t HELPER(sve_fadda_h)(uint64_t nn, void *vm, void *vg,
void *status, uint32_t desc)
{
intptr_t i = 0, opr_sz = simd_oprsz(desc);
float16 result = nn;
do {
uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3));
do {
if (pg & 1) {
float16 mm = *(float16 *)(vm + H1_2(i));
result = float16_add(result, mm, status);
}
i += sizeof(float16), pg >>= sizeof(float16);
} while (i & 15);
} while (i < opr_sz);
return result;
}
uint64_t HELPER(sve_fadda_s)(uint64_t nn, void *vm, void *vg,
void *status, uint32_t desc)
{
intptr_t i = 0, opr_sz = simd_oprsz(desc);
float32 result = nn;
do {
uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3));
do {
if (pg & 1) {
float32 mm = *(float32 *)(vm + H1_2(i));
result = float32_add(result, mm, status);
}
i += sizeof(float32), pg >>= sizeof(float32);
} while (i & 15);
} while (i < opr_sz);
return result;
}
uint64_t HELPER(sve_fadda_d)(uint64_t nn, void *vm, void *vg,
void *status, uint32_t desc)
{
intptr_t i = 0, opr_sz = simd_oprsz(desc) / 8;
uint64_t *m = vm;
uint8_t *pg = vg;
for (i = 0; i < opr_sz; i++) {
if (pg[H1(i)] & 1) {
nn = float64_add(nn, m[i], status);
}
}
return nn;
}
/* Fully general three-operand expander, controlled by a predicate,
* With the extra float_status parameter.
*/