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nir: Add lowering from regular ALU conversions to the intrinsic

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Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6945>
This commit is contained in:
Jason Ekstrand 2020-10-01 10:09:35 -05:00 • committed by Marge Bot
parent bc7ed03ef8
commit cb95065dd1
2 changed files with 25 additions and 0 deletions
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1
src/compiler/nir/nir.h
View file

@ -4388,6 +4388,7 @@ bool nir_opt_simplify_convert_alu_types(nir_shader *shader);
bool nir_lower_convert_alu_types(nir_shader *shader,
bool (*should_lower)(nir_intrinsic_instr *));
bool nir_lower_constant_convert_alu_types(nir_shader *shader);
bool nir_lower_alu_covnersion_to_intrinsic(nir_shader *shader);
bool nir_lower_int_to_float(nir_shader *shader);
bool nir_lower_load_const_to_scalar(nir_shader *shader);
bool nir_lower_read_invocation_to_scalar(nir_shader *shader);

24
src/compiler/nir/nir_lower_convert_alu_types.c
View file

@ -180,3 +180,27 @@ nir_lower_constant_convert_alu_types(nir_shader *shader)
{
return nir_lower_convert_alu_types(shader, is_constant);
}
static bool
is_alu_conversion(const nir_instr *instr, UNUSED const void *_data)
{
return instr->type == nir_instr_type_alu &&
nir_op_infos[nir_instr_as_alu(instr)->op].is_conversion;
}
static nir_ssa_def *
lower_alu_conversion(nir_builder *b, nir_instr *instr, UNUSED void *_data)
{
nir_alu_instr *alu = nir_instr_as_alu(instr);
return nir_convert_alu_types(b, nir_ssa_for_alu_src(b, alu, 0),
nir_op_infos[alu->op].input_types[0],
nir_op_infos[alu->op].output_type,
nir_rounding_mode_undef, false);
}
bool
nir_lower_alu_covnersion_to_intrinsic(nir_shader *shader)
{
return nir_shader_lower_instructions(shader, is_alu_conversion,
lower_alu_conversion, NULL);
}