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zink: use lower_scmp instead of open-coding

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We already have the proper lowering in NIR for this, so there's no point
in doing our own implementations of these. The end result is the same
code anyway.

Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8335>
This commit is contained in:
Erik Faye-Lund 2021-01-05 18:36:09 +01:00 • committed by Marge Bot
parent 94b84f1eed
commit 43302ead38
2 changed files with 3 additions and 35 deletions
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37
src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c
View file

@ -1423,44 +1423,11 @@ emit_alu(struct ntv_context *ctx, nir_alu_instr *alu)
break; break;
case nir_op_fdph: case nir_op_fdph:
unreachable("should already be lowered away");
case nir_op_seq: case nir_op_seq:
case nir_op_sne: case nir_op_sne:
case nir_op_slt: case nir_op_slt:
case nir_op_sge: { case nir_op_sge:
assert(nir_op_infos[alu->op].num_inputs == 2); unreachable("should already be lowered away");
int num_components = nir_dest_num_components(alu->dest.dest);
SpvId bool_type = get_bvec_type(ctx, num_components);
SpvId zero = emit_float_const(ctx, bit_size, 0.0f);
SpvId one = emit_float_const(ctx, bit_size, 1.0f);
if (num_components > 1) {
SpvId zero_comps[num_components], one_comps[num_components];
for (int i = 0; i < num_components; i++) {
zero_comps[i] = zero;
one_comps[i] = one;
}
zero = spirv_builder_const_composite(&ctx->builder, dest_type,
zero_comps, num_components);
one = spirv_builder_const_composite(&ctx->builder, dest_type,
one_comps, num_components);
}
SpvOp op;
switch (alu->op) {
case nir_op_seq: op = SpvOpFOrdEqual; break;
case nir_op_sne: op = SpvOpFOrdNotEqual; break;
case nir_op_slt: op = SpvOpFOrdLessThan; break;
case nir_op_sge: op = SpvOpFOrdGreaterThanEqual; break;
default: unreachable("unexpected op");
}
result = emit_binop(ctx, op, bool_type, src[0], src[1]);
result = emit_select(ctx, dest_type, result, one, zero);
}
break;
case nir_op_flrp: case nir_op_flrp:
assert(nir_op_infos[alu->op].num_inputs == 3); assert(nir_op_infos[alu->op].num_inputs == 3);

1
src/gallium/drivers/zink/zink_compiler.c
View file

@ -207,6 +207,7 @@ static const struct nir_shader_compiler_options nir_options = {
.lower_ffma16 = true, .lower_ffma16 = true,
.lower_ffma32 = true, .lower_ffma32 = true,
.lower_ffma64 = true, .lower_ffma64 = true,
.lower_scmp = true,
.lower_fdph = true, .lower_fdph = true,
.lower_flrp32 = true, .lower_flrp32 = true,
.lower_fpow = true, .lower_fpow = true,