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nir/opt_constant_folding: create const_value_for_alu() helper

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Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40848>
This commit is contained in:
Daniel Schürmann 2026-04-01 09:53:18 +02:00 • committed by Marge Bot
parent 52b195b4e8
commit 8b1c60add4
1 changed files with 20 additions and 12 deletions
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32
src/compiler/nir/nir_opt_constant_folding.c
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@ -36,6 +36,25 @@ struct constant_fold_state {
bool has_indirect_load_const;
};
static nir_def *
const_value_for_alu(nir_builder *b, nir_alu_instr *alu, unsigned bit_size,
nir_const_value src[NIR_ALU_MAX_INPUTS][NIR_MAX_VEC_COMPONENTS])
{
nir_const_value dest[NIR_MAX_VEC_COMPONENTS];
nir_const_value *srcs[NIR_ALU_MAX_INPUTS];
memset(dest, 0, sizeof(dest));
for (unsigned i = 0; i < nir_op_infos[alu->op].num_inputs; ++i)
srcs[i] = src[i];
nir_eval_const_opcode(alu->op, dest, NULL, alu->def.num_components,
bit_size, srcs,
b->shader->info.float_controls_execution_mode);
return nir_build_imm(b, alu->def.num_components, alu->def.bit_size,
dest);
}
nir_def *
nir_try_constant_fold_alu(nir_builder *b, nir_alu_instr *alu)
{
@ -72,18 +91,7 @@ nir_try_constant_fold_alu(nir_builder *b, nir_alu_instr *alu)
if (bit_size == 0)
bit_size = 32;
nir_const_value dest[NIR_MAX_VEC_COMPONENTS];
nir_const_value *srcs[NIR_ALU_MAX_INPUTS];
memset(dest, 0, sizeof(dest));
for (unsigned i = 0; i < nir_op_infos[alu->op].num_inputs; ++i)
srcs[i] = src[i];
nir_eval_const_opcode(alu->op, dest, NULL, alu->def.num_components,
bit_size, srcs,
b->shader->info.float_controls_execution_mode);
return nir_build_imm(b, alu->def.num_components,
alu->def.bit_size,
dest);
return const_value_for_alu(b, alu, bit_size, src);
}
static nir_const_value *