diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/glsl/ast_to_hir.cpp | 545 |
1 files changed, 263 insertions, 282 deletions
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp index 86bb8741bcc..9252df14952 100644 --- a/src/glsl/ast_to_hir.cpp +++ b/src/glsl/ast_to_hir.cpp @@ -3576,7 +3576,7 @@ ast_switch_statement::hir(exec_list *instructions, /* Cache test expression. */ test_to_hir(instructions, state); - + /* Emit code for body of switch stmt. */ body->hir(instructions, state); @@ -3585,290 +3585,271 @@ ast_switch_statement::hir(exec_list *instructions, state->switch_state = saved; - /* Switch statements do not have r-values. - */ - return NULL; - } - - - void - ast_switch_statement::test_to_hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - void *ctx = state; - - /* Cache value of test expression. - */ - ir_rvalue *const test_val = - test_expression->hir(instructions, - state); - - state->switch_state.test_var = new(ctx) ir_variable(glsl_type::int_type, - "switch_test_tmp", - ir_var_temporary); - ir_dereference_variable *deref_test_var = - new(ctx) ir_dereference_variable(state->switch_state.test_var); - - instructions->push_tail(state->switch_state.test_var); - instructions->push_tail(new(ctx) ir_assignment(deref_test_var, - test_val, - NULL)); - } - - - ir_rvalue * - ast_switch_body::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - if (stmts != NULL) - stmts->hir(instructions, state); - - /* Switch bodies do not have r-values. - */ - return NULL; - } - - - ir_rvalue * - ast_case_statement_list::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - foreach_list_typed (ast_case_statement, case_stmt, link, & this->cases) - case_stmt->hir(instructions, state); - - /* Case statements do not have r-values. - */ - return NULL; - } - - - ir_rvalue * - ast_case_statement::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - labels->hir(instructions, state); - - /* Conditionally set fallthru state based on break state. - */ - ir_constant *const false_val = new(state) ir_constant(false); - ir_dereference_variable *const deref_is_fallthru_var = - new(state) ir_dereference_variable(state->switch_state.is_fallthru_var); - ir_dereference_variable *const deref_is_break_var = - new(state) ir_dereference_variable(state->switch_state.is_break_var); - ir_assignment *const reset_fallthru_on_break = - new(state) ir_assignment(deref_is_fallthru_var, - false_val, - deref_is_break_var); - instructions->push_tail(reset_fallthru_on_break); - - /* Guard case statements depending on fallthru state. - */ - ir_dereference_variable *const deref_fallthru_guard = - new(state) ir_dereference_variable(state->switch_state.is_fallthru_var); - ir_if *const test_fallthru = new(state) ir_if(deref_fallthru_guard); - - foreach_list_typed (ast_node, stmt, link, & this->stmts) - stmt->hir(& test_fallthru->then_instructions, state); - - instructions->push_tail(test_fallthru); - - /* Case statements do not have r-values. - */ - return NULL; - } - - - ir_rvalue * - ast_case_label_list::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - foreach_list_typed (ast_case_label, label, link, & this->labels) - label->hir(instructions, state); - - /* Case labels do not have r-values. - */ - return NULL; - } - - - ir_rvalue * - ast_case_label::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - void *ctx = state; - - ir_dereference_variable *deref_fallthru_var = - new(ctx) ir_dereference_variable(state->switch_state.is_fallthru_var); - - ir_rvalue *const true_val = new(ctx) ir_constant(true); - - /* If not default case, ... - */ - if (this->test_value != NULL) { - /* Conditionally set fallthru state based on - * comparison of cached test expression value to case label. - */ - ir_rvalue *const label_rval = this->test_value->hir(instructions, state); - ir_constant *label_const = label_rval->constant_expression_value(); - - if (!label_const) { - YYLTYPE loc = this->test_value->get_location(); - - _mesa_glsl_error(& loc, state, - "switch statement case label must be a " - "constant expression"); - - /* Stuff a dummy value in to allow processing to continue. */ - label_const = new(ctx) ir_constant(0); - } else { - ast_expression *previous_label = (ast_expression *) - hash_table_find(state->switch_state.labels_ht, + /* Switch statements do not have r-values. */ + return NULL; +} + + +void +ast_switch_statement::test_to_hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + + /* Cache value of test expression. */ + ir_rvalue *const test_val = + test_expression->hir(instructions, + state); + + state->switch_state.test_var = new(ctx) ir_variable(glsl_type::int_type, + "switch_test_tmp", + ir_var_temporary); + ir_dereference_variable *deref_test_var = + new(ctx) ir_dereference_variable(state->switch_state.test_var); + + instructions->push_tail(state->switch_state.test_var); + instructions->push_tail(new(ctx) ir_assignment(deref_test_var, test_val, + NULL)); +} + + +ir_rvalue * +ast_switch_body::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + if (stmts != NULL) + stmts->hir(instructions, state); + + /* Switch bodies do not have r-values. */ + return NULL; +} + +ir_rvalue * +ast_case_statement_list::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + foreach_list_typed (ast_case_statement, case_stmt, link, & this->cases) + case_stmt->hir(instructions, state); + + /* Case statements do not have r-values. */ + return NULL; +} + +ir_rvalue * +ast_case_statement::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + labels->hir(instructions, state); + + /* Conditionally set fallthru state based on break state. */ + ir_constant *const false_val = new(state) ir_constant(false); + ir_dereference_variable *const deref_is_fallthru_var = + new(state) ir_dereference_variable(state->switch_state.is_fallthru_var); + ir_dereference_variable *const deref_is_break_var = + new(state) ir_dereference_variable(state->switch_state.is_break_var); + ir_assignment *const reset_fallthru_on_break = + new(state) ir_assignment(deref_is_fallthru_var, + false_val, + deref_is_break_var); + instructions->push_tail(reset_fallthru_on_break); + + /* Guard case statements depending on fallthru state. */ + ir_dereference_variable *const deref_fallthru_guard = + new(state) ir_dereference_variable(state->switch_state.is_fallthru_var); + ir_if *const test_fallthru = new(state) ir_if(deref_fallthru_guard); + + foreach_list_typed (ast_node, stmt, link, & this->stmts) + stmt->hir(& test_fallthru->then_instructions, state); + + instructions->push_tail(test_fallthru); + + /* Case statements do not have r-values. */ + return NULL; +} + + +ir_rvalue * +ast_case_label_list::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + foreach_list_typed (ast_case_label, label, link, & this->labels) + label->hir(instructions, state); + + /* Case labels do not have r-values. */ + return NULL; +} + +ir_rvalue * +ast_case_label::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + + ir_dereference_variable *deref_fallthru_var = + new(ctx) ir_dereference_variable(state->switch_state.is_fallthru_var); + + ir_rvalue *const true_val = new(ctx) ir_constant(true); + + /* If not default case, ... */ + if (this->test_value != NULL) { + /* Conditionally set fallthru state based on + * comparison of cached test expression value to case label. + */ + ir_rvalue *const label_rval = this->test_value->hir(instructions, state); + ir_constant *label_const = label_rval->constant_expression_value(); + + if (!label_const) { + YYLTYPE loc = this->test_value->get_location(); + + _mesa_glsl_error(& loc, state, + "switch statement case label must be a " + "constant expression"); + + /* Stuff a dummy value in to allow processing to continue. */ + label_const = new(ctx) ir_constant(0); + } else { + ast_expression *previous_label = (ast_expression *) + hash_table_find(state->switch_state.labels_ht, + (void *)(uintptr_t)label_const->value.u[0]); + + if (previous_label) { + YYLTYPE loc = this->test_value->get_location(); + _mesa_glsl_error(& loc, state, + "duplicate case value"); + + loc = previous_label->get_location(); + _mesa_glsl_error(& loc, state, + "this is the previous case label"); + } else { + hash_table_insert(state->switch_state.labels_ht, + this->test_value, (void *)(uintptr_t)label_const->value.u[0]); + } + } + + ir_dereference_variable *deref_test_var = + new(ctx) ir_dereference_variable(state->switch_state.test_var); + + ir_rvalue *const test_cond = new(ctx) ir_expression(ir_binop_all_equal, + glsl_type::bool_type, + label_const, + deref_test_var); + + ir_assignment *set_fallthru_on_test = + new(ctx) ir_assignment(deref_fallthru_var, + true_val, + test_cond); + + instructions->push_tail(set_fallthru_on_test); + } else { /* default case */ + if (state->switch_state.previous_default) { + printf("a\n"); + YYLTYPE loc = this->get_location(); + _mesa_glsl_error(& loc, state, + "multiple default labels in one switch"); + + printf("b\n"); + + loc = state->switch_state.previous_default->get_location(); + _mesa_glsl_error(& loc, state, + "this is the first default label"); + } + state->switch_state.previous_default = this; + + /* Set falltrhu state. */ + ir_assignment *set_fallthru = + new(ctx) ir_assignment(deref_fallthru_var, true_val, NULL); + + instructions->push_tail(set_fallthru); + } - if (previous_label) { - YYLTYPE loc = this->test_value->get_location(); - _mesa_glsl_error(& loc, state, - "duplicate case value"); - - loc = previous_label->get_location(); - _mesa_glsl_error(& loc, state, - "this is the previous case label"); - } else { - hash_table_insert(state->switch_state.labels_ht, - this->test_value, - (void *)(uintptr_t)label_const->value.u[0]); - } - } - - ir_dereference_variable *deref_test_var = - new(ctx) ir_dereference_variable(state->switch_state.test_var); - - ir_rvalue *const test_cond = new(ctx) ir_expression(ir_binop_all_equal, - glsl_type::bool_type, - label_const, - deref_test_var); - - ir_assignment *set_fallthru_on_test = - new(ctx) ir_assignment(deref_fallthru_var, - true_val, - test_cond); - - instructions->push_tail(set_fallthru_on_test); - } else { /* default case */ - if (state->switch_state.previous_default) { - printf("a\n"); - YYLTYPE loc = this->get_location(); - _mesa_glsl_error(& loc, state, - "multiple default labels in one switch"); - - printf("b\n"); - - loc = state->switch_state.previous_default->get_location(); - _mesa_glsl_error(& loc, state, - "this is the first default label"); - } - state->switch_state.previous_default = this; - - /* Set falltrhu state. - */ - ir_assignment *set_fallthru = - new(ctx) ir_assignment(deref_fallthru_var, - true_val, - NULL); - - instructions->push_tail(set_fallthru); - } - - /* Case statements do not have r-values. - */ - return NULL; - } - - - void - ast_iteration_statement::condition_to_hir(ir_loop *stmt, - struct _mesa_glsl_parse_state *state) - { - void *ctx = state; - - if (condition != NULL) { - ir_rvalue *const cond = - condition->hir(& stmt->body_instructions, state); - - if ((cond == NULL) - || !cond->type->is_boolean() || !cond->type->is_scalar()) { - YYLTYPE loc = condition->get_location(); - - _mesa_glsl_error(& loc, state, - "loop condition must be scalar boolean"); - } else { - /* As the first code in the loop body, generate a block that looks - * like 'if (!condition) break;' as the loop termination condition. - */ - ir_rvalue *const not_cond = - new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond, - NULL); - - ir_if *const if_stmt = new(ctx) ir_if(not_cond); - - ir_jump *const break_stmt = - new(ctx) ir_loop_jump(ir_loop_jump::jump_break); - - if_stmt->then_instructions.push_tail(break_stmt); - stmt->body_instructions.push_tail(if_stmt); - } - } - } - - - ir_rvalue * - ast_iteration_statement::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - void *ctx = state; - - /* For-loops and while-loops start a new scope, but do-while loops do not. - */ - if (mode != ast_do_while) - state->symbols->push_scope(); - - if (init_statement != NULL) - init_statement->hir(instructions, state); - - ir_loop *const stmt = new(ctx) ir_loop(); - instructions->push_tail(stmt); - - /* Track the current loop nesting. - */ - ast_iteration_statement *nesting_ast = state->loop_nesting_ast; - - state->loop_nesting_ast = this; - - /* Likewise, indicate that following code is closest to a loop, - * NOT closest to a switch. - */ - bool saved_is_switch_innermost = state->switch_state.is_switch_innermost; - state->switch_state.is_switch_innermost = false; - - if (mode != ast_do_while) - condition_to_hir(stmt, state); - - if (body != NULL) - body->hir(& stmt->body_instructions, state); - - if (rest_expression != NULL) - rest_expression->hir(& stmt->body_instructions, state); + /* Case statements do not have r-values. */ + return NULL; +} + +void +ast_iteration_statement::condition_to_hir(ir_loop *stmt, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + + if (condition != NULL) { + ir_rvalue *const cond = + condition->hir(& stmt->body_instructions, state); + + if ((cond == NULL) + || !cond->type->is_boolean() || !cond->type->is_scalar()) { + YYLTYPE loc = condition->get_location(); + + _mesa_glsl_error(& loc, state, + "loop condition must be scalar boolean"); + } else { + /* As the first code in the loop body, generate a block that looks + * like 'if (!condition) break;' as the loop termination condition. + */ + ir_rvalue *const not_cond = + new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, + cond, + NULL); + + ir_if *const if_stmt = new(ctx) ir_if(not_cond); + + ir_jump *const break_stmt = + new(ctx) ir_loop_jump(ir_loop_jump::jump_break); + + if_stmt->then_instructions.push_tail(break_stmt); + stmt->body_instructions.push_tail(if_stmt); + } + } +} + + +ir_rvalue * +ast_iteration_statement::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + + /* For-loops and while-loops start a new scope, but do-while loops do not. + */ + if (mode != ast_do_while) + state->symbols->push_scope(); + + if (init_statement != NULL) + init_statement->hir(instructions, state); + + ir_loop *const stmt = new(ctx) ir_loop(); + instructions->push_tail(stmt); + + /* Track the current loop nesting. */ + ast_iteration_statement *nesting_ast = state->loop_nesting_ast; + + state->loop_nesting_ast = this; + + /* Likewise, indicate that following code is closest to a loop, + * NOT closest to a switch. + */ + bool saved_is_switch_innermost = state->switch_state.is_switch_innermost; + state->switch_state.is_switch_innermost = false; + + if (mode != ast_do_while) + condition_to_hir(stmt, state); + + if (body != NULL) + body->hir(& stmt->body_instructions, state); + + if (rest_expression != NULL) + rest_expression->hir(& stmt->body_instructions, state); + + if (mode == ast_do_while) + condition_to_hir(stmt, state); + + if (mode != ast_do_while) + state->symbols->pop_scope(); - if (mode == ast_do_while) - condition_to_hir(stmt, state); - - if (mode != ast_do_while) - state->symbols->pop_scope(); - - /* Restore previous nesting before returning. - */ - state->loop_nesting_ast = nesting_ast; - state->switch_state.is_switch_innermost = saved_is_switch_innermost; + /* Restore previous nesting before returning. */ + state->loop_nesting_ast = nesting_ast; + state->switch_state.is_switch_innermost = saved_is_switch_innermost; /* Loops do not have r-values. */ |