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nir: Share destination rewriting and replacement code in IO lowering.

Browse source 
Both loads and atomics had identical code to rewrite destinations,
and all cases had the same two lines to replace instructions.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Kenneth Graunke 2016-07-12 02:30:02 -07:00
parent 349fe79c9b
commit cdfc05ea6e
1 changed files with 20 additions and 26 deletions
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46
src/compiler/nir/nir_lower_io.c
View file

@ -289,6 +289,8 @@ nir_lower_io_block(nir_block *block,
per_vertex ? &vertex_index : NULL,
state->type_size);
nir_intrinsic_instr *replacement;
switch (intrin->intrinsic) {
case nir_intrinsic_load_var: {
nir_intrinsic_instr *load =
@ -311,18 +313,7 @@ nir_lower_io_block(nir_block *block,
load->src[per_vertex ? 1 : 0] = nir_src_for_ssa(offset);
if (intrin->dest.is_ssa) {
nir_ssa_dest_init(&load->instr, &load->dest,
intrin->num_components,
intrin->dest.ssa.bit_size, NULL);
nir_ssa_def_rewrite_uses(&intrin->dest.ssa,
nir_src_for_ssa(&load->dest.ssa));
} else {
nir_dest_copy(&load->dest, &intrin->dest, state->mem_ctx);
}
nir_instr_insert_before(&intrin->instr, &load->instr);
nir_instr_remove(&intrin->instr);
replacement = load;
break;
}
@ -348,8 +339,7 @@ nir_lower_io_block(nir_block *block,
store->src[per_vertex ? 2 : 1] = nir_src_for_ssa(offset);
nir_instr_insert_before(&intrin->instr, &store->instr);
nir_instr_remove(&intrin->instr);
replacement = store;
break;
}
@ -379,24 +369,28 @@ nir_lower_io_block(nir_block *block,
nir_src_copy(&atomic->src[i+1], &intrin->src[i], atomic);
}
if (intrin->dest.is_ssa) {
nir_ssa_dest_init(&atomic->instr, &atomic->dest,
intrin->dest.ssa.num_components,
intrin->dest.ssa.bit_size, NULL);
nir_ssa_def_rewrite_uses(&intrin->dest.ssa,
nir_src_for_ssa(&atomic->dest.ssa));
} else {
nir_dest_copy(&atomic->dest, &intrin->dest, state->mem_ctx);
}
nir_instr_insert_before(&intrin->instr, &atomic->instr);
nir_instr_remove(&intrin->instr);
replacement = atomic;
break;
}
default:
break;
}
if (nir_intrinsic_infos[intrin->intrinsic].has_dest) {
if (intrin->dest.is_ssa) {
nir_ssa_dest_init(&replacement->instr, &replacement->dest,
intrin->num_components,
intrin->dest.ssa.bit_size, NULL);
nir_ssa_def_rewrite_uses(&intrin->dest.ssa,
nir_src_for_ssa(&replacement->dest.ssa));
} else {
nir_dest_copy(&replacement->dest, &intrin->dest, state->mem_ctx);
}
}
nir_instr_insert_before(&intrin->instr, &replacement->instr);
nir_instr_remove(&intrin->instr);
}
return true;