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nir/search: use memcmp/memcpy/memset

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39808>
This commit is contained in:
Rhys Perry 2026-02-10 14:12:08 +00:00 • committed by Marge Bot
parent 5d92942241
commit fa5d4174c4
1 changed files with 7 additions and 17 deletions
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24
src/compiler/nir/nir_search.c
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@ -289,22 +289,14 @@ match_value(const nir_algebraic_table *table,
if (state->variables[var->variable].src.ssa != instr->src[src].src.ssa)
return false;
for (unsigned i = 0; i < num_components; ++i) {
if (state->variables[var->variable].swizzle[i] != new_swizzle[i])
return false;
}
return true;
return !memcmp(state->variables[var->variable].swizzle, new_swizzle, num_components);
} else {
state->variables_seen |= (1 << var->variable);
state->variables[var->variable].src = instr->src[src].src;
nir_alu_src *dst = &state->variables[var->variable];
dst->src = instr->src[src].src;
for (unsigned i = 0; i < NIR_MAX_VEC_COMPONENTS; ++i) {
if (i < num_components)
state->variables[var->variable].swizzle[i] = new_swizzle[i];
else
state->variables[var->variable].swizzle[i] = 0;
}
memcpy(dst->swizzle, new_swizzle, num_components);
memset(dst->swizzle + num_components, 0, NIR_MAX_VEC_COMPONENTS - num_components);
return true;
}
@ -405,10 +397,8 @@ match_expression(const nir_algebraic_table *table, const nir_search_expression *
return false;
} else {
if (nir_op_infos[instr->op].output_size != 0) {
for (unsigned i = 0; i < num_components; i++) {
if (swizzle[i] != i)
return false;
}
if (memcmp(swizzle, identity_swizzle, num_components))
return false;
}
}