OpenHarmony/third_party_mesa3d
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add support for ast_to_hir of post inc/dec.

Browse Source
This commit is contained in:
Eric Anholt
2010-03-26 12:14:54 -07:00
committed by Ian Romanick
parent c4f86d3b80
commit de38f0ed53
1 changed files with 55 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
ast_to_hir.cpp
View File

@@ -387,6 +387,29 @@ do_assignment(exec_list *instructions, struct _mesa_glsl_parse_state *state,
return rhs;
}
static ir_rvalue *
get_lvalue_copy(exec_list *instructions, struct _mesa_glsl_parse_state *state,
ir_rvalue *lvalue, YYLTYPE loc)
{
ir_variable *var;
ir_rvalue *var_deref;
/* FINISHME: Give unique names to the temporaries. */
var = new ir_variable(lvalue->type, "_internal_tmp");
var->mode = ir_var_auto;
var_deref = new ir_dereference(var);
do_assignment(instructions, state, var_deref, lvalue, loc);
/* Once we've created this temporary, mark it read only so it's no
* longer considered an lvalue.
*/
var->read_only = true;
return var_deref;
}
ir_rvalue *
ast_node::hir(exec_list *instructions,
struct _mesa_glsl_parse_state *state)
@@ -443,10 +466,10 @@ ast_expression::hir(exec_list *instructions,
ir_binop_bit_or, /* ast_or_assign */
-1, /* ast_conditional doesn't convert to ir_expression. */
-1, /* ast_pre_inc doesn't convert to ir_expression. */
-1, /* ast_pre_dec doesn't convert to ir_expression. */
-1, /* ast_post_inc doesn't convert to ir_expression. */
-1, /* ast_post_dec doesn't convert to ir_expression. */
ir_binop_add, /* ast_pre_inc. */
ir_binop_sub, /* ast_pre_dec. */
ir_binop_add, /* ast_post_inc. */
ir_binop_sub, /* ast_post_dec. */
-1, /* ast_field_selection doesn't conv to ir_expression. */
-1, /* ast_array_index doesn't convert to ir_expression. */
-1, /* ast_function_call doesn't conv to ir_expression. */
@@ -636,8 +659,35 @@ ast_expression::hir(exec_list *instructions,
case ast_pre_dec:
case ast_post_inc:
case ast_post_dec:
case ast_post_dec: {
op[0] = this->subexpressions[0]->hir(instructions, state);
if (op[0]->type->base_type == GLSL_TYPE_FLOAT)
op[1] = new ir_constant(1.0f);
else
op[1] = new ir_constant(1);
error_emitted = op[0]->type->is_error() || op[1]->type->is_error();
type = arithmetic_result_type(op[0]->type, op[1]->type,
false, state);
struct ir_rvalue *temp_rhs;
temp_rhs = new ir_expression(operations[this->oper], type,
op[0], op[1]);
/* Get a temporary of a copy of the lvalue before it's modified.
* This may get thrown away later.
*/
result = get_lvalue_copy(instructions, state, op[0],
this->subexpressions[0]->get_location());
(void)do_assignment(instructions, state, op[0], temp_rhs,
this->subexpressions[0]->get_location());
type = result->type;
error_emitted = op[0]->type->is_error();
break;
}
case ast_field_selection:
result = _mesa_ast_field_selection_to_hir(this, instructions, state);