2 * Copyright © 2013 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 #include "ir_builder.h"
25 #include "ir_rvalue_visitor.h"
26 #include "ir_optimization.h"
27 #include "main/mtypes.h"
29 using namespace ir_builder
;
33 class vector_deref_visitor
: public ir_rvalue_enter_visitor
{
35 vector_deref_visitor()
40 virtual ~vector_deref_visitor()
44 virtual void handle_rvalue(ir_rvalue
**rv
);
45 virtual ir_visitor_status
visit_enter(ir_assignment
*ir
);
50 } /* anonymous namespace */
53 vector_deref_visitor::visit_enter(ir_assignment
*ir
)
55 if (!ir
->lhs
|| ir
->lhs
->ir_type
!= ir_type_dereference_array
)
56 return ir_rvalue_enter_visitor::visit_enter(ir
);
58 ir_dereference_array
*const deref
= (ir_dereference_array
*) ir
->lhs
;
59 if (!deref
->array
->type
->is_vector())
60 return ir_rvalue_enter_visitor::visit_enter(ir
);
62 ir_dereference
*const new_lhs
= (ir_dereference
*) deref
->array
;
65 void *mem_ctx
= ralloc_parent(ir
);
66 ir_constant
*old_index_constant
=
67 deref
->array_index
->constant_expression_value(mem_ctx
);
68 if (!old_index_constant
) {
69 ir
->rhs
= new(mem_ctx
) ir_expression(ir_triop_vector_insert
,
71 new_lhs
->clone(mem_ctx
, NULL
),
74 ir
->write_mask
= (1 << new_lhs
->type
->vector_elements
) - 1;
76 ir
->write_mask
= 1 << old_index_constant
->get_int_component(0);
79 return ir_rvalue_enter_visitor::visit_enter(ir
);
83 vector_deref_visitor::handle_rvalue(ir_rvalue
**rv
)
85 if (*rv
== NULL
|| (*rv
)->ir_type
!= ir_type_dereference_array
)
88 ir_dereference_array
*const deref
= (ir_dereference_array
*) *rv
;
89 if (!deref
->array
->type
->is_vector())
92 void *mem_ctx
= ralloc_parent(deref
);
93 *rv
= new(mem_ctx
) ir_expression(ir_binop_vector_extract
,
99 lower_vector_derefs(gl_linked_shader
*shader
)
101 vector_deref_visitor v
;
103 visit_list_elements(&v
, shader
->ir
);