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add neon version for chunk all_set

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Daan 2024-12-26 23:51:37 -08:00
commit 9511d09529
1 changed files with 22 additions and 8 deletions
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30
src/bitmap.c
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@ -603,10 +603,10 @@ static inline bool mi_bchunk_try_find_and_clear(mi_bchunk_t* chunk, size_t* pidx
// note: there must be an atomic release/acquire in between or otherwise the registers may not be reloaded
}
#else
// try first to find a field that is not all set (to reduce fragmentation)
for (int i = 0; i < MI_BCHUNK_FIELDS; i++) {
if (mi_bchunk_try_find_and_clear_at(chunk, i, pidx, false /* don't consider allset fields */)) return true;
}
// try first to find a field that is not all set (to reduce fragmentation) (not needed for binned bitmaps)
// for (int i = 0; i < MI_BCHUNK_FIELDS; i++) {
// if (mi_bchunk_try_find_and_clear_at(chunk, i, pidx, false /* don't consider allset fields */)) return true;
// }
for (int i = 0; i < MI_BCHUNK_FIELDS; i++) {
if (mi_bchunk_try_find_and_clear_at(chunk, i, pidx, true)) return true;
}
@ -673,10 +673,10 @@ static mi_decl_noinline bool mi_bchunk_try_find_and_clear8(mi_bchunk_t* chunk, s
// note: there must be an atomic release/acquire in between or otherwise the registers may not be reloaded }
}
#else
// first skip allset fields to reduce fragmentation
for(int i = 0; i < MI_BCHUNK_FIELDS; i++) {
if (mi_bchunk_try_find_and_clear8_at(chunk, i, pidx, false /* don't allow allset fields */)) return true;
}
// first skip allset fields to reduce fragmentation (not needed for binned bitmaps)
// for(int i = 0; i < MI_BCHUNK_FIELDS; i++) {
// if (mi_bchunk_try_find_and_clear8_at(chunk, i, pidx, false /* don't allow allset fields */)) return true;
// }
for (int i = 0; i < MI_BCHUNK_FIELDS; i++) {
if (mi_bchunk_try_find_and_clear8_at(chunk, i, pidx, true /* allow allset fields */)) return true;
}
@ -876,6 +876,13 @@ static inline bool mi_bchunk_all_are_clear_relaxed(mi_bchunk_t* chunk) {
const __m256i vec1 = _mm256_load_si256((const __m256i*)chunk->bfields);
const __m256i vec2 = _mm256_load_si256(((const __m256i*)chunk->bfields)+1);
return (mi_mm256_is_zero(_mm256_or_si256(vec1,vec2)));
#elif MI_OPT_SIMD && (MI_BCHUNK_BITS==512) && MI_ARCH_ARM64
const uint64x2_t v0 = vld1q_u64((uint64_t*)chunk->bfields);
const uint64x2_t v1 = vld1q_u64((uint64_t*)chunk->bfields + 2);
const uint64x2_t v2 = vld1q_u64((uint64_t*)chunk->bfields + 4);
const uint64x2_t v3 = vld1q_u64((uint64_t*)chunk->bfields + 6);
const uint64x2_t v = vorrq_u64(vorrq_u64(v0,v1),vorrq_u64(v2,v3));
return (vmaxvq_u32(vreinterpretq_u32_u64(v)) == 0);
#else
for (int i = 0; i < MI_BCHUNK_FIELDS; i++) {
if (mi_atomic_load_relaxed(&chunk->bfields[i]) != 0) return false;
@ -894,6 +901,13 @@ static inline bool mi_bchunk_all_are_set_relaxed(mi_bchunk_t* chunk) {
const __m256i vec1 = _mm256_load_si256((const __m256i*)chunk->bfields);
const __m256i vec2 = _mm256_load_si256(((const __m256i*)chunk->bfields)+1);
return (mi_mm256_is_ones(_mm256_and_si256(vec1, vec2)));
#elif MI_OPT_SIMD && (MI_BCHUNK_BITS==512) && MI_ARCH_ARM64
const uint64x2_t v0 = vld1q_u64((uint64_t*)chunk->bfields);
const uint64x2_t v1 = vld1q_u64((uint64_t*)chunk->bfields + 2);
const uint64x2_t v2 = vld1q_u64((uint64_t*)chunk->bfields + 4);
const uint64x2_t v3 = vld1q_u64((uint64_t*)chunk->bfields + 6);
const uint64x2_t v = vandq_u64(vandq_u64(v0,v1),vandq_u64(v2,v3));
return (vminvq_u32(vreinterpretq_u32_u64(v)) == 0xFFFFFFFFUL);
#else
for (int i = 0; i < MI_BCHUNK_FIELDS; i++) {
if (~mi_atomic_load_relaxed(&chunk->bfields[i]) != 0) return false;