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zink: replace fnv1a hash function with xxhash

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xxhash is faster than fnv1a in almost all circumstances, so we're
switching to it globally.

Signed-off-by: Dmytro Nester <dmytro.nester@globallogic.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4020>
This commit is contained in:
Dmitriy Nester 2020-02-27 15:38:45 +02:00 • committed by Marge Bot
parent 33fd35e2d3
commit bf4d652f3f
1 changed files with 9 additions and 9 deletions
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18
src/gallium/drivers/zink/nir_to_spirv/spirv_builder.c
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@ -27,6 +27,8 @@
#include "util/u_bitcast.h"
#include "util/u_memory.h"
#include "util/hash_table.h"
#define XXH_INLINE_ALL
#include "util/xxhash.h"
#include <stdbool.h>
#include <inttypes.h>
@ -677,10 +679,9 @@ non_aggregate_type_hash(const void *arg)
{
const struct spirv_type *type = arg;
uint32_t hash = _mesa_fnv32_1a_offset_bias;
hash = _mesa_fnv32_1a_accumulate(hash, type->op);
hash = _mesa_fnv32_1a_accumulate_block(hash, type->args, sizeof(uint32_t) *
type->num_args);
uint32_t hash = 0;
hash = XXH32(&type->op, sizeof(type->op), hash);
hash = XXH32(type->args, sizeof(uint32_t) * type->num_args, hash);
return hash;
}
@ -883,11 +884,10 @@ const_hash(const void *arg)
{
const struct spirv_const *key = arg;
uint32_t hash = _mesa_fnv32_1a_offset_bias;
hash = _mesa_fnv32_1a_accumulate(hash, key->op);
hash = _mesa_fnv32_1a_accumulate(hash, key->type);
hash = _mesa_fnv32_1a_accumulate_block(hash, key->args, sizeof(uint32_t) *
key->num_args);
uint32_t hash = 0;
hash = XXH32(&key->op, sizeof(key->op), hash);
hash = XXH32(&key->type, sizeof(key->type), hash);
hash = XXH32(key->args, sizeof(uint32_t) * key->num_args, hash);
return hash;
}