Since it will gain support to lower inputs, give it a more generic name.
Signed-off-by: Rob Clark <robclark@freedesktop.org>
nir/nir_lower_idiv.c \
nir/nir_lower_indirect_derefs.c \
nir/nir_lower_io.c \
+ nir/nir_lower_io_to_temporaries.c \
nir/nir_lower_io_types.c \
- nir/nir_lower_outputs_to_temporaries.c \
nir/nir_lower_passthrough_edgeflags.c \
nir/nir_lower_phis_to_scalar.c \
nir/nir_lower_returns.c \
bool nir_lower_locals_to_regs(nir_shader *shader);
-void nir_lower_outputs_to_temporaries(nir_shader *shader,
- nir_function *entrypoint);
+void nir_lower_io_to_temporaries(nir_shader *shader, nir_function *entrypoint);
+
void nir_shader_gather_info(nir_shader *shader, nir_function_impl *entrypoint);
void nir_assign_var_locations(struct exec_list *var_list,
--- /dev/null
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+/*
+ * Implements a pass that lowers output variables to a temporary plus an
+ * output variable with a single copy at each exit point of the shader.
+ * This way the output variable is only ever written.
+ */
+
+#include "nir.h"
+
+struct lower_io_state {
+ nir_shader *shader;
+ struct exec_list old_outputs;
+};
+
+static void
+emit_output_copies(nir_cursor cursor, struct lower_io_state *state)
+{
+ assert(exec_list_length(&state->shader->outputs) ==
+ exec_list_length(&state->old_outputs));
+
+ foreach_two_lists(out_node, &state->shader->outputs,
+ temp_node, &state->old_outputs) {
+ nir_variable *output = exec_node_data(nir_variable, out_node, node);
+ nir_variable *temp = exec_node_data(nir_variable, temp_node, node);
+
+ nir_intrinsic_instr *copy =
+ nir_intrinsic_instr_create(state->shader, nir_intrinsic_copy_var);
+ copy->variables[0] = nir_deref_var_create(copy, output);
+ copy->variables[1] = nir_deref_var_create(copy, temp);
+
+ nir_instr_insert(cursor, ©->instr);
+ }
+}
+
+void
+nir_lower_io_to_temporaries(nir_shader *shader, nir_function *entrypoint)
+{
+ struct lower_io_state state;
+
+ if (shader->stage == MESA_SHADER_TESS_CTRL)
+ return;
+
+ state.shader = shader;
+ exec_list_move_nodes_to(&shader->outputs, &state.old_outputs);
+
+ /* Walk over all of the outputs turn each output into a temporary and
+ * make a new variable for the actual output.
+ */
+ nir_foreach_variable(var, &state.old_outputs) {
+ nir_variable *output = ralloc(shader, nir_variable);
+ memcpy(output, var, sizeof *output);
+
+ /* The orignal is now the temporary */
+ nir_variable *temp = var;
+
+ /* Reparent the name to the new variable */
+ ralloc_steal(output, output->name);
+
+ /* Reparent the constant initializer (if any) */
+ ralloc_steal(output, output->constant_initializer);
+
+ /* Give the output a new name with @out-temp appended */
+ temp->name = ralloc_asprintf(var, "%s@out-temp", output->name);
+ temp->data.mode = nir_var_global;
+ temp->constant_initializer = NULL;
+
+ exec_list_push_tail(&shader->outputs, &output->node);
+ }
+
+ nir_foreach_function(function, shader) {
+ if (function->impl == NULL)
+ continue;
+
+ if (shader->stage == MESA_SHADER_GEOMETRY) {
+ /* For geometry shaders, we have to emit the output copies right
+ * before each EmitVertex call.
+ */
+ nir_foreach_block(block, function->impl) {
+ nir_foreach_instr(instr, block) {
+ if (instr->type != nir_instr_type_intrinsic)
+ continue;
+
+ nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
+ if (intrin->intrinsic == nir_intrinsic_emit_vertex) {
+ emit_output_copies(nir_before_instr(&intrin->instr),
+ &state);
+ }
+ }
+ }
+ } else if (function == entrypoint) {
+ /* For all other shader types, we need to do the copies right before
+ * the jumps to the end block.
+ */
+ struct set_entry *block_entry;
+ set_foreach(function->impl->end_block->predecessors, block_entry) {
+ struct nir_block *block = (void *)block_entry->key;
+ emit_output_copies(nir_after_block_before_jump(block), &state);
+ }
+ }
+
+ nir_metadata_preserve(function->impl, nir_metadata_block_index |
+ nir_metadata_dominance);
+ }
+
+ exec_list_append(&shader->globals, &state.old_outputs);
+}
+++ /dev/null
-/*
- * Copyright © 2015 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-/*
- * Implements a pass that lowers output variables to a temporary plus an
- * output variable with a single copy at each exit point of the shader.
- * This way the output variable is only ever written.
- */
-
-#include "nir.h"
-
-struct lower_outputs_state {
- nir_shader *shader;
- struct exec_list old_outputs;
-};
-
-static void
-emit_output_copies(nir_cursor cursor, struct lower_outputs_state *state)
-{
- assert(exec_list_length(&state->shader->outputs) ==
- exec_list_length(&state->old_outputs));
-
- foreach_two_lists(out_node, &state->shader->outputs,
- temp_node, &state->old_outputs) {
- nir_variable *output = exec_node_data(nir_variable, out_node, node);
- nir_variable *temp = exec_node_data(nir_variable, temp_node, node);
-
- nir_intrinsic_instr *copy =
- nir_intrinsic_instr_create(state->shader, nir_intrinsic_copy_var);
- copy->variables[0] = nir_deref_var_create(copy, output);
- copy->variables[1] = nir_deref_var_create(copy, temp);
-
- nir_instr_insert(cursor, ©->instr);
- }
-}
-
-void
-nir_lower_outputs_to_temporaries(nir_shader *shader, nir_function *entrypoint)
-{
- struct lower_outputs_state state;
-
- if (shader->stage == MESA_SHADER_TESS_CTRL)
- return;
-
- state.shader = shader;
- exec_list_move_nodes_to(&shader->outputs, &state.old_outputs);
-
- /* Walk over all of the outputs turn each output into a temporary and
- * make a new variable for the actual output.
- */
- nir_foreach_variable(var, &state.old_outputs) {
- nir_variable *output = ralloc(shader, nir_variable);
- memcpy(output, var, sizeof *output);
-
- /* The orignal is now the temporary */
- nir_variable *temp = var;
-
- /* Reparent the name to the new variable */
- ralloc_steal(output, output->name);
-
- /* Reparent the constant initializer (if any) */
- ralloc_steal(output, output->constant_initializer);
-
- /* Give the output a new name with @out-temp appended */
- temp->name = ralloc_asprintf(var, "%s@out-temp", output->name);
- temp->data.mode = nir_var_global;
- temp->constant_initializer = NULL;
-
- exec_list_push_tail(&shader->outputs, &output->node);
- }
-
- nir_foreach_function(function, shader) {
- if (function->impl == NULL)
- continue;
-
- if (shader->stage == MESA_SHADER_GEOMETRY) {
- /* For geometry shaders, we have to emit the output copies right
- * before each EmitVertex call.
- */
- nir_foreach_block(block, function->impl) {
- nir_foreach_instr(instr, block) {
- if (instr->type != nir_instr_type_intrinsic)
- continue;
-
- nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
- if (intrin->intrinsic == nir_intrinsic_emit_vertex) {
- emit_output_copies(nir_before_instr(&intrin->instr),
- &state);
- }
- }
- }
- } else if (function == entrypoint) {
- /* For all other shader types, we need to do the copies right before
- * the jumps to the end block.
- */
- struct set_entry *block_entry;
- set_foreach(function->impl->end_block->predecessors, block_entry) {
- struct nir_block *block = (void *)block_entry->key;
- emit_output_copies(nir_after_block_before_jump(block), &state);
- }
- }
-
- nir_metadata_preserve(function->impl, nir_metadata_block_index |
- nir_metadata_dominance);
- }
-
- exec_list_append(&shader->globals, &state.old_outputs);
-}
/* First, lower the GLSL IR or Mesa IR to NIR */
if (shader_prog) {
nir = glsl_to_nir(shader_prog, stage, options);
- OPT_V(nir_lower_outputs_to_temporaries, nir_shader_get_entrypoint(nir));
+ OPT_V(nir_lower_io_to_temporaries, nir_shader_get_entrypoint(nir));
} else {
nir = prog_to_nir(prog, options);
OPT_V(nir_convert_to_ssa); /* turn registers into SSA */
projects / mesa.git / commitdiff