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|
/*
* Copyright © 2016 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.
*/
#include <inttypes.h> /* for PRIx64 macro */
#include "ir.h"
#include "ir_hierarchical_visitor.h"
#include "ir_builder_print_visitor.h"
#include "compiler/glsl_types.h"
#include "glsl_parser_extras.h"
#include "main/macros.h"
#include "util/hash_table.h"
#include "util/u_string.h"
class ir_builder_print_visitor : public ir_hierarchical_visitor {
public:
ir_builder_print_visitor(FILE *f);
virtual ~ir_builder_print_visitor();
void indent(void);
virtual ir_visitor_status visit(class ir_variable *);
virtual ir_visitor_status visit(class ir_dereference_variable *);
virtual ir_visitor_status visit(class ir_constant *);
virtual ir_visitor_status visit(class ir_loop_jump *);
virtual ir_visitor_status visit_enter(class ir_if *);
virtual ir_visitor_status visit_enter(class ir_loop *);
virtual ir_visitor_status visit_leave(class ir_loop *);
virtual ir_visitor_status visit_enter(class ir_function_signature *);
virtual ir_visitor_status visit_leave(class ir_function_signature *);
virtual ir_visitor_status visit_enter(class ir_expression *);
virtual ir_visitor_status visit_enter(class ir_assignment *);
virtual ir_visitor_status visit_leave(class ir_assignment *);
virtual ir_visitor_status visit_leave(class ir_call *);
virtual ir_visitor_status visit_leave(class ir_swizzle *);
virtual ir_visitor_status visit_leave(class ir_return *);
virtual ir_visitor_status visit_enter(ir_texture *ir);
private:
void print_with_indent(const char *fmt, ...);
void print_without_indent(const char *fmt, ...);
void print_without_declaration(const ir_rvalue *ir);
void print_without_declaration(const ir_constant *ir);
void print_without_declaration(const ir_dereference_variable *ir);
void print_without_declaration(const ir_swizzle *ir);
void print_without_declaration(const ir_expression *ir);
unsigned next_ir_index;
/**
* Mapping from ir_instruction * -> index used in the generated C code
* variable name.
*/
hash_table *index_map;
FILE *f;
int indentation;
};
/* An operand is "simple" if it can be compactly printed on one line.
*/
static bool
is_simple_operand(const ir_rvalue *ir, unsigned depth = 1)
{
if (depth == 0)
return false;
switch (ir->ir_type) {
case ir_type_dereference_variable:
return true;
case ir_type_constant: {
if (ir->type == glsl_type::uint_type ||
ir->type == glsl_type::int_type ||
ir->type == glsl_type::float_type ||
ir->type == glsl_type::bool_type)
return true;
const ir_constant *const c = (ir_constant *) ir;
ir_constant_data all_zero;
memset(&all_zero, 0, sizeof(all_zero));
return memcmp(&c->value, &all_zero, sizeof(all_zero)) == 0;
}
case ir_type_swizzle: {
const ir_swizzle *swiz = (ir_swizzle *) ir;
return swiz->mask.num_components == 1 &&
is_simple_operand(swiz->val, depth);
}
case ir_type_expression: {
const ir_expression *expr = (ir_expression *) ir;
for (unsigned i = 0; i < expr->num_operands; i++) {
if (!is_simple_operand(expr->operands[i], depth - 1))
return false;
}
return true;
}
default:
return false;
}
}
void
_mesa_print_builder_for_ir(FILE *f, exec_list *instructions)
{
ir_builder_print_visitor v(f);
v.run(instructions);
}
ir_builder_print_visitor::ir_builder_print_visitor(FILE *f)
: next_ir_index(1), f(f), indentation(0)
{
index_map = _mesa_pointer_hash_table_create(NULL);
}
ir_builder_print_visitor::~ir_builder_print_visitor()
{
_mesa_hash_table_destroy(index_map, NULL);
}
void ir_builder_print_visitor::indent(void)
{
for (int i = 0; i < indentation; i++)
fprintf(f, " ");
}
void
ir_builder_print_visitor::print_with_indent(const char *fmt, ...)
{
va_list ap;
indent();
va_start(ap, fmt);
vfprintf(f, fmt, ap);
va_end(ap);
}
void
ir_builder_print_visitor::print_without_indent(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(f, fmt, ap);
va_end(ap);
}
void
ir_builder_print_visitor::print_without_declaration(const ir_rvalue *ir)
{
switch (ir->ir_type) {
case ir_type_dereference_variable:
print_without_declaration((ir_dereference_variable *) ir);
break;
case ir_type_constant:
print_without_declaration((ir_constant *) ir);
break;
case ir_type_swizzle:
print_without_declaration((ir_swizzle *) ir);
break;
case ir_type_expression:
print_without_declaration((ir_expression *) ir);
break;
default:
unreachable("Invalid IR type.");
}
}
ir_visitor_status
ir_builder_print_visitor::visit(ir_variable *ir)
{
const unsigned my_index = next_ir_index++;
_mesa_hash_table_insert(index_map, ir, (void *)(uintptr_t) my_index);
const char *mode_str;
switch (ir->data.mode) {
case ir_var_auto: mode_str = "ir_var_auto"; break;
case ir_var_uniform: mode_str = "ir_var_uniform"; break;
case ir_var_shader_storage: mode_str = "ir_var_shader_storage"; break;
case ir_var_shader_shared: mode_str = "ir_var_shader_shared"; break;
case ir_var_shader_in: mode_str = "ir_var_shader_in"; break;
case ir_var_shader_out: mode_str = "ir_var_shader_out"; break;
case ir_var_function_in: mode_str = "ir_var_function_in"; break;
case ir_var_function_out: mode_str = "ir_var_function_out"; break;
case ir_var_function_inout: mode_str = "ir_var_function_inout"; break;
case ir_var_const_in: mode_str = "ir_var_const_in"; break;
case ir_var_system_value: mode_str = "ir_var_system_value"; break;
case ir_var_temporary: mode_str = "ir_var_temporary"; break;
default:
unreachable("Invalid variable mode");
}
if (ir->data.mode == ir_var_temporary) {
print_with_indent("ir_variable *const r%04X = body.make_temp(glsl_type::%s_type, \"%s\");\n",
my_index,
ir->type->name,
ir->name);
} else {
print_with_indent("ir_variable *const r%04X = new(mem_ctx) ir_variable(glsl_type::%s_type, \"%s\", %s);\n",
my_index,
ir->type->name,
ir->name,
mode_str);
switch (ir->data.mode) {
case ir_var_function_in:
case ir_var_function_out:
case ir_var_function_inout:
case ir_var_const_in:
print_with_indent("sig_parameters.push_tail(r%04X);\n", my_index);
break;
default:
print_with_indent("body.emit(r%04X);\n", my_index);
break;
}
}
return visit_continue;
}
void
ir_builder_print_visitor::print_without_declaration(const ir_dereference_variable *ir)
{
const struct hash_entry *const he =
_mesa_hash_table_search(index_map, ir->var);
print_without_indent("r%04X", (unsigned)(uintptr_t) he->data);
}
ir_visitor_status
ir_builder_print_visitor::visit(ir_dereference_variable *ir)
{
const struct hash_entry *const he =
_mesa_hash_table_search(index_map, ir->var);
if (he != NULL)
_mesa_hash_table_insert(index_map, ir, he->data);
return visit_continue;
}
ir_visitor_status
ir_builder_print_visitor::visit_enter(ir_function_signature *ir)
{
if (!ir->is_defined)
return visit_continue_with_parent;
print_with_indent("ir_function_signature *\n"
"%s(void *mem_ctx, builtin_available_predicate avail)\n"
"{\n",
ir->function_name());
indentation++;
print_with_indent("ir_function_signature *const sig =\n");
print_with_indent(" new(mem_ctx) ir_function_signature(glsl_type::%s_type, avail);\n",
ir->return_type->name);
print_with_indent("ir_factory body(&sig->body, mem_ctx);\n");
print_with_indent("sig->is_defined = true;\n\n");
if (!ir->parameters.is_empty())
print_with_indent("exec_list sig_parameters;\n\n");
return visit_continue;
}
ir_visitor_status
ir_builder_print_visitor::visit_leave(ir_function_signature *ir)
{
if (!ir->parameters.is_empty())
print_with_indent("sig->replace_parameters(&sig_parameters);\n");
print_with_indent("return sig;\n");
indentation--;
print_with_indent("}\n");
return visit_continue;
}
void
ir_builder_print_visitor::print_without_declaration(const ir_constant *ir)
{
if (ir->type->is_scalar()) {
switch (ir->type->base_type) {
case GLSL_TYPE_UINT:
print_without_indent("body.constant(%uu)", ir->value.u[0]);
return;
case GLSL_TYPE_INT:
print_without_indent("body.constant(int(%d))", ir->value.i[0]);
return;
case GLSL_TYPE_FLOAT:
print_without_indent("body.constant(%ff)", ir->value.f[0]);
return;
case GLSL_TYPE_BOOL:
print_without_indent("body.constant(%s)",
ir->value.i[0] != 0 ? "true" : "false");
return;
default:
break;
}
}
ir_constant_data all_zero;
memset(&all_zero, 0, sizeof(all_zero));
if (memcmp(&ir->value, &all_zero, sizeof(all_zero)) == 0) {
print_without_indent("ir_constant::zero(mem_ctx, glsl_type::%s_type)",
ir->type->name);
}
}
ir_visitor_status
ir_builder_print_visitor::visit(ir_constant *ir)
{
const unsigned my_index = next_ir_index++;
_mesa_hash_table_insert(index_map, ir, (void *)(uintptr_t) my_index);
if (ir->type == glsl_type::uint_type ||
ir->type == glsl_type::int_type ||
ir->type == glsl_type::float_type ||
ir->type == glsl_type::bool_type) {
print_with_indent("ir_constant *const r%04X = ", my_index);
print_without_declaration(ir);
print_without_indent(";\n");
return visit_continue;
}
ir_constant_data all_zero;
memset(&all_zero, 0, sizeof(all_zero));
if (memcmp(&ir->value, &all_zero, sizeof(all_zero)) == 0) {
print_with_indent("ir_constant *const r%04X = ", my_index);
print_without_declaration(ir);
print_without_indent(";\n");
} else {
print_with_indent("ir_constant_data r%04X_data;\n", my_index);
print_with_indent("memset(&r%04X_data, 0, sizeof(ir_constant_data));\n",
my_index);
for (unsigned i = 0; i < 16; i++) {
switch (ir->type->base_type) {
case GLSL_TYPE_UINT:
if (ir->value.u[i] != 0)
print_with_indent("r%04X_data.u[%u] = %u;\n",
my_index, i, ir->value.u[i]);
break;
case GLSL_TYPE_INT:
if (ir->value.i[i] != 0)
print_with_indent("r%04X_data.i[%u] = %i;\n",
my_index, i, ir->value.i[i]);
break;
case GLSL_TYPE_FLOAT:
if (ir->value.u[i] != 0)
print_with_indent("r%04X_data.u[%u] = 0x%08x; /* %f */\n",
my_index,
i,
ir->value.u[i],
ir->value.f[i]);
break;
case GLSL_TYPE_DOUBLE: {
uint64_t v;
STATIC_ASSERT(sizeof(double) == sizeof(uint64_t));
memcpy(&v, &ir->value.d[i], sizeof(v));
if (v != 0)
print_with_indent("r%04X_data.u64[%u] = 0x%016" PRIx64 "; /* %g */\n",
my_index, i, v, ir->value.d[i]);
break;
}
case GLSL_TYPE_UINT64:
if (ir->value.u64[i] != 0)
print_with_indent("r%04X_data.u64[%u] = %" PRIu64 ";\n",
my_index,
i,
ir->value.u64[i]);
break;
case GLSL_TYPE_INT64:
if (ir->value.i64[i] != 0)
print_with_indent("r%04X_data.i64[%u] = %" PRId64 ";\n",
my_index,
i,
ir->value.i64[i]);
break;
case GLSL_TYPE_BOOL:
if (ir->value.u[i] != 0)
print_with_indent("r%04X_data.u[%u] = 1;\n", my_index, i);
break;
default:
unreachable("Invalid constant type");
}
}
print_with_indent("ir_constant *const r%04X = new(mem_ctx) ir_constant(glsl_type::%s_type, &r%04X_data);\n",
my_index,
ir->type->name,
my_index);
}
return visit_continue;
}
void
ir_builder_print_visitor::print_without_declaration(const ir_swizzle *ir)
{
const struct hash_entry *const he =
_mesa_hash_table_search(index_map, ir->val);
if (ir->mask.num_components == 1) {
static const char swiz[4] = { 'x', 'y', 'z', 'w' };
if (is_simple_operand(ir->val)) {
print_without_indent("swizzle_%c(", swiz[ir->mask.x]);
print_without_declaration(ir->val);
print_without_indent(")");
} else {
assert(he);
print_without_indent("swizzle_%c(r%04X)",
swiz[ir->mask.x],
(unsigned)(uintptr_t) he->data);
}
} else {
static const char swiz[4] = { 'X', 'Y', 'Z', 'W' };
assert(he);
print_without_indent("swizzle(r%04X, MAKE_SWIZZLE4(SWIZZLE_%c, SWIZZLE_%c, SWIZZLE_%c, SWIZZLE_%c), %u)",
(unsigned)(uintptr_t) he->data,
swiz[ir->mask.x],
swiz[ir->mask.y],
swiz[ir->mask.z],
swiz[ir->mask.w],
ir->mask.num_components);
}
}
ir_visitor_status
ir_builder_print_visitor::visit_leave(ir_swizzle *ir)
{
const unsigned my_index = next_ir_index++;
_mesa_hash_table_insert(index_map, ir, (void *)(uintptr_t) my_index);
print_with_indent("ir_swizzle *const r%04X = ", my_index);
print_without_declaration(ir);
print_without_indent(";\n");
return visit_continue;
}
ir_visitor_status
ir_builder_print_visitor::visit_enter(ir_assignment *ir)
{
ir_expression *const rhs_expr = ir->rhs->as_expression();
if (!is_simple_operand(ir->rhs) && rhs_expr == NULL)
return visit_continue;
if (rhs_expr != NULL) {
const unsigned num_op = rhs_expr->num_operands;
for (unsigned i = 0; i < num_op; i++) {
if (is_simple_operand(rhs_expr->operands[i]))
continue;
rhs_expr->operands[i]->accept(this);
}
}
ir_visitor_status s;
this->in_assignee = true;
s = ir->lhs->accept(this);
this->in_assignee = false;
if (s != visit_continue)
return (s == visit_continue_with_parent) ? visit_continue : s;
assert(ir->condition == NULL);
const struct hash_entry *const he_lhs =
_mesa_hash_table_search(index_map, ir->lhs);
print_with_indent("body.emit(assign(r%04X, ",
(unsigned)(uintptr_t) he_lhs->data);
print_without_declaration(ir->rhs);
print_without_indent(", 0x%02x));\n\n", ir->write_mask);
return visit_continue_with_parent;
}
ir_visitor_status
ir_builder_print_visitor::visit_leave(ir_assignment *ir)
{
const struct hash_entry *const he_lhs =
_mesa_hash_table_search(index_map, ir->lhs);
const struct hash_entry *const he_rhs =
_mesa_hash_table_search(index_map, ir->rhs);
assert(ir->condition == NULL);
assert(ir->lhs && ir->rhs);
print_with_indent("body.emit(assign(r%04X, r%04X, 0x%02x));\n\n",
(unsigned)(uintptr_t) he_lhs->data,
(unsigned)(uintptr_t) he_rhs->data,
ir->write_mask);
return visit_continue;
}
void
ir_builder_print_visitor::print_without_declaration(const ir_expression *ir)
{
const unsigned num_op = ir->num_operands;
static const char *const arity[] = {
"", "unop", "binop", "triop", "quadop"
};
switch (ir->operation) {
case ir_unop_neg:
case ir_binop_add:
case ir_binop_sub:
case ir_binop_mul:
case ir_binop_imul_high:
case ir_binop_less:
case ir_binop_gequal:
case ir_binop_equal:
case ir_binop_nequal:
case ir_binop_lshift:
case ir_binop_rshift:
case ir_binop_bit_and:
case ir_binop_bit_xor:
case ir_binop_bit_or:
case ir_binop_logic_and:
case ir_binop_logic_xor:
case ir_binop_logic_or:
print_without_indent("%s(",
ir_expression_operation_enum_strings[ir->operation]);
break;
default:
print_without_indent("expr(ir_%s_%s, ",
arity[num_op],
ir_expression_operation_enum_strings[ir->operation]);
break;
}
for (unsigned i = 0; i < num_op; i++) {
if (is_simple_operand(ir->operands[i]))
print_without_declaration(ir->operands[i]);
else {
const struct hash_entry *const he =
_mesa_hash_table_search(index_map, ir->operands[i]);
print_without_indent("r%04X", (unsigned)(uintptr_t) he->data);
}
if (i < num_op - 1)
print_without_indent(", ");
}
print_without_indent(")");
}
ir_visitor_status
ir_builder_print_visitor::visit_enter(ir_expression *ir)
{
const unsigned num_op = ir->num_operands;
for (unsigned i = 0; i < num_op; i++) {
if (is_simple_operand(ir->operands[i]))
continue;
ir->operands[i]->accept(this);
}
const unsigned my_index = next_ir_index++;
_mesa_hash_table_insert(index_map, ir, (void *)(uintptr_t) my_index);
print_with_indent("ir_expression *const r%04X = ", my_index);
print_without_declaration(ir);
print_without_indent(";\n");
return visit_continue_with_parent;
}
ir_visitor_status
ir_builder_print_visitor::visit_enter(ir_if *ir)
{
const unsigned my_index = next_ir_index++;
print_with_indent("/* IF CONDITION */\n");
ir_visitor_status s = ir->condition->accept(this);
if (s != visit_continue)
return (s == visit_continue_with_parent) ? visit_continue : s;
const struct hash_entry *const he =
_mesa_hash_table_search(index_map, ir->condition);
print_with_indent("ir_if *f%04X = new(mem_ctx) ir_if(operand(r%04X).val);\n",
my_index,
(unsigned)(uintptr_t) he->data);
print_with_indent("exec_list *const f%04X_parent_instructions = body.instructions;\n\n",
my_index);
indentation++;
print_with_indent("/* THEN INSTRUCTIONS */\n");
print_with_indent("body.instructions = &f%04X->then_instructions;\n\n",
my_index);
if (s != visit_continue_with_parent) {
s = visit_list_elements(this, &ir->then_instructions);
if (s == visit_stop)
return s;
}
print_without_indent("\n");
if (!ir->else_instructions.is_empty()) {
print_with_indent("/* ELSE INSTRUCTIONS */\n");
print_with_indent("body.instructions = &f%04X->else_instructions;\n\n",
my_index);
if (s != visit_continue_with_parent) {
s = visit_list_elements(this, &ir->else_instructions);
if (s == visit_stop)
return s;
}
print_without_indent("\n");
}
indentation--;
print_with_indent("body.instructions = f%04X_parent_instructions;\n",
my_index);
print_with_indent("body.emit(f%04X);\n\n",
my_index);
print_with_indent("/* END IF */\n\n");
return visit_continue_with_parent;
}
ir_visitor_status
ir_builder_print_visitor::visit_leave(ir_return *ir)
{
const struct hash_entry *const he =
_mesa_hash_table_search(index_map, ir->value);
print_with_indent("body.emit(ret(r%04X));\n\n",
(unsigned)(uintptr_t) he->data);
return visit_continue;
}
ir_visitor_status
ir_builder_print_visitor::visit_enter(ir_texture *ir)
{
print_with_indent("\nUnsupported IR is encountered: texture functions are not supported. Exiting.\n");
return visit_stop;
}
ir_visitor_status
ir_builder_print_visitor::visit_leave(ir_call *ir)
{
const unsigned my_index = next_ir_index++;
print_without_indent("\n");
print_with_indent("/* CALL %s */\n", ir->callee_name());
print_with_indent("exec_list r%04X_parameters;\n", my_index);
foreach_in_list(ir_dereference_variable, param, &ir->actual_parameters) {
const struct hash_entry *const he =
_mesa_hash_table_search(index_map, param);
print_with_indent("r%04X_parameters.push_tail(operand(r%04X).val);\n",
my_index,
(unsigned)(uintptr_t) he->data);
}
char return_deref_string[32];
if (ir->return_deref) {
const struct hash_entry *const he =
_mesa_hash_table_search(index_map, ir->return_deref);
snprintf(return_deref_string, sizeof(return_deref_string),
"operand(r%04X).val", (unsigned)(uintptr_t) he->data);
} else {
strcpy(return_deref_string, "NULL");
}
print_with_indent("body.emit(new(mem_ctx) ir_call(shader->symbols->get_function(\"%s\"),\n",
ir->callee_name());
print_with_indent(" %s, &r%04X_parameters);\n\n",
return_deref_string,
my_index);
return visit_continue;
}
ir_visitor_status
ir_builder_print_visitor::visit_enter(ir_loop *ir)
{
const unsigned my_index = next_ir_index++;
_mesa_hash_table_insert(index_map, ir, (void *)(uintptr_t) my_index);
print_with_indent("/* LOOP BEGIN */\n");
print_with_indent("ir_loop *f%04X = new(mem_ctx) ir_loop();\n", my_index);
print_with_indent("exec_list *const f%04X_parent_instructions = body.instructions;\n\n",
my_index);
indentation++;
print_with_indent("body.instructions = &f%04X->body_instructions;\n\n",
my_index);
return visit_continue;
}
ir_visitor_status
ir_builder_print_visitor::visit_leave(ir_loop *ir)
{
const struct hash_entry *const he =
_mesa_hash_table_search(index_map, ir);
indentation--;
print_with_indent("/* LOOP END */\n\n");
print_with_indent("body.instructions = f%04X_parent_instructions;\n",
(unsigned)(uintptr_t) he->data);
print_with_indent("body.emit(f%04X);\n\n",
(unsigned)(uintptr_t) he->data);
return visit_continue;
}
ir_visitor_status
ir_builder_print_visitor::visit(ir_loop_jump *ir)
{
print_with_indent("body.emit(new(mem_ctx) ir_loop_jump(ir_loop_jump::jump_%s));\n\n",
ir->is_break() ? "break" : "continue");
return visit_continue;
}
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