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nir: add options to lower nir_op_pack_[64/32]_* via nir_lower_alu_to_scalar()

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Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6527>
This commit is contained in:
Daniel Schürmann
2020-09-21 14:01:24 +01:00
committed by Marge Bot
parent 121fa017e1
commit bd0468ed33
2 changed files with 31 additions and 0 deletions
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3
src/compiler/nir/nir.h
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@@ -3215,6 +3215,9 @@ typedef struct nir_shader_compiler_options {
bool lower_pack_snorm_2x16;
bool lower_pack_unorm_4x8;
bool lower_pack_snorm_4x8;
bool lower_pack_64_2x32;
bool lower_pack_64_4x16;
bool lower_pack_32_2x16;
bool lower_pack_64_2x32_split;
bool lower_pack_32_2x16_split;
bool lower_unpack_half_2x16;

28
src/compiler/nir/nir_lower_alu_to_scalar.c
View File

@@ -209,6 +209,34 @@ lower_alu_instr_scalar(nir_builder *b, nir_instr *instr, void *_data)
nir_fadd(b, sum[2], sum[3]));
}
case nir_op_pack_64_2x32: {
if (!b->shader->options->lower_pack_64_2x32)
return NULL;
nir_ssa_def *src_vec2 = nir_ssa_for_alu_src(b, alu, 0);
return nir_pack_64_2x32_split(b, nir_channel(b, src_vec2, 0),
nir_channel(b, src_vec2, 1));
}
case nir_op_pack_64_4x16: {
if (!b->shader->options->lower_pack_64_4x16)
return NULL;
nir_ssa_def *src_vec4 = nir_ssa_for_alu_src(b, alu, 0);
nir_ssa_def *xy = nir_pack_32_2x16_split(b, nir_channel(b, src_vec4, 0),
nir_channel(b, src_vec4, 1));
nir_ssa_def *zw = nir_pack_32_2x16_split(b, nir_channel(b, src_vec4, 2),
nir_channel(b, src_vec4, 3));
return nir_pack_64_2x32_split(b, xy, zw);
}
case nir_op_pack_32_2x16: {
if (!b->shader->options->lower_pack_32_2x16)
return NULL;
nir_ssa_def *src_vec2 = nir_ssa_for_alu_src(b, alu, 0);
return nir_pack_32_2x16_split(b, nir_channel(b, src_vec2, 0),
nir_channel(b, src_vec2, 1));
}
case nir_op_unpack_64_2x32:
case nir_op_unpack_64_4x16:
case nir_op_unpack_32_2x16: