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nir: Return progress from nir_move_vec_src_uses_to_dest().

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Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Matt Turner 2017-02-27 16:28:43 -08:00
parent a539e05d00
commit 6077cc75aa
2 changed files with 18 additions and 6 deletions
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2
src/compiler/nir/nir.h
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@ -2397,7 +2397,7 @@ bool nir_remove_dead_variables(nir_shader *shader, nir_variable_mode modes);
bool nir_lower_constant_initializers(nir_shader *shader,
nir_variable_mode modes);
void nir_move_vec_src_uses_to_dest(nir_shader *shader);
bool nir_move_vec_src_uses_to_dest(nir_shader *shader);
bool nir_lower_vec_to_movs(nir_shader *shader);
bool nir_lower_alu_to_scalar(nir_shader *shader);
bool nir_lower_load_const_to_scalar(nir_shader *shader);

22
src/compiler/nir/nir_move_vec_src_uses_to_dest.c
View file

@ -64,6 +64,8 @@ ssa_def_dominates_instr(nir_ssa_def *def, nir_instr *instr)
static bool
move_vec_src_uses_to_dest_block(nir_block *block)
{
bool progress = false;
nir_foreach_instr(instr, block) {
if (instr->type != nir_instr_type_alu)
continue;
@ -167,34 +169,44 @@ move_vec_src_uses_to_dest_block(nir_block *block)
continue;
use_alu_src->swizzle[j] = swizzle[use_alu_src->swizzle[j]];
progress = true;
}
}
}
}
return true;
return progress;
}
static void
static bool
nir_move_vec_src_uses_to_dest_impl(nir_shader *shader, nir_function_impl *impl)
{
bool progress = false;
nir_metadata_require(impl, nir_metadata_dominance);
nir_index_instrs(impl);
nir_foreach_block(block, impl) {
move_vec_src_uses_to_dest_block(block);
progress |= move_vec_src_uses_to_dest_block(block);
}
nir_metadata_preserve(impl, nir_metadata_block_index |
nir_metadata_dominance);
return progress;
}
void
bool
nir_move_vec_src_uses_to_dest(nir_shader *shader)
{
bool progress = false;
nir_foreach_function(function, shader) {
if (function->impl)
nir_move_vec_src_uses_to_dest_impl(shader, function->impl);
progress |= nir_move_vec_src_uses_to_dest_impl(shader,
function->impl);
}
return progress;
}