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nir: small tidy ups for nir_loop_analyze()

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Reviewed-by: Thomas Helland <thomashelland90@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Timothy Arceri
2018-11-15 20:40:08 +11:00
parent 41a4a6ba6f
commit de0aee7638
1 changed files with 10 additions and 21 deletions
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31
src/compiler/nir/nir_loop_analyze.c
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@@ -624,8 +624,7 @@ find_trip_count(loop_info_state *state)
}
static bool
force_unroll_array_access(loop_info_state *state, nir_shader *ns,
nir_deref_instr *deref)
force_unroll_array_access(loop_info_state *state, nir_deref_instr *deref)
{
for (nir_deref_instr *d = deref; d; d = nir_deref_instr_parent(d)) {
if (d->deref_type != nir_deref_type_array)
@@ -640,23 +639,18 @@ force_unroll_array_access(loop_info_state *state, nir_shader *ns,
nir_deref_instr *parent = nir_deref_instr_parent(d);
assert(glsl_type_is_array(parent->type) ||
glsl_type_is_matrix(parent->type));
if (glsl_get_length(parent->type) == state->loop->info->trip_count) {
state->loop->info->force_unroll = true;
if (glsl_get_length(parent->type) == state->loop->info->trip_count)
return true;
}
if (deref->mode & state->indirect_mask) {
state->loop->info->force_unroll = true;
if (deref->mode & state->indirect_mask)
return true;
}
}
return false;
}
static bool
force_unroll_heuristics(loop_info_state *state, nir_shader *ns,
nir_block *block)
force_unroll_heuristics(loop_info_state *state, nir_block *block)
{
nir_foreach_instr(instr, block) {
if (instr->type != nir_instr_type_intrinsic)
@@ -670,12 +664,12 @@ force_unroll_heuristics(loop_info_state *state, nir_shader *ns,
if (intrin->intrinsic == nir_intrinsic_load_deref ||
intrin->intrinsic == nir_intrinsic_store_deref ||
intrin->intrinsic == nir_intrinsic_copy_deref) {
if (force_unroll_array_access(state, ns,
if (force_unroll_array_access(state,
nir_src_as_deref(intrin->src[0])))
return true;
if (intrin->intrinsic == nir_intrinsic_copy_deref &&
force_unroll_array_access(state, ns,
force_unroll_array_access(state,
nir_src_as_deref(intrin->src[1])))
return true;
}
@@ -745,15 +739,10 @@ get_loop_info(loop_info_state *state, nir_function_impl *impl)
find_trip_count(state);
nir_shader *ns = impl->function->shader;
foreach_list_typed_safe(nir_cf_node, node, node, &state->loop->body) {
if (node->type == nir_cf_node_block) {
if (force_unroll_heuristics(state, ns, nir_cf_node_as_block(node)))
break;
} else {
nir_foreach_block_in_cf_node(block, node) {
if (force_unroll_heuristics(state, ns, block))
break;
}
nir_foreach_block_in_cf_node(block, &state->loop->cf_node) {
if (force_unroll_heuristics(state, block)) {
state->loop->info->force_unroll = true;
break;
}
}
}