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Simplify ir_constant_expression.cpp by factoring operand computation out.

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This commit is contained in:
Eric Anholt
2010-04-01 18:07:08 -10:00
committed by Ian Romanick
parent 90b7825b0e
commit 160d092507
3 changed files with 79 additions and 21 deletions
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36
ir_constant_expression.cpp
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@@ -133,40 +133,36 @@ ir_constant_visitor::visit(ir_expression *ir)
{
value = NULL;
ir_constant *op[2];
unsigned int i;
for (i = 0; i < ir->get_num_operands(); i++) {
op[i] = ir->operands[i]->constant_expression_value();
if (!op[i])
return;
}
switch (ir->operation) {
case ir_unop_logic_not:
op[0] = ir->operands[0]->constant_expression_value();
if (op[0]) {
value = new ir_constant(!op[0]->value.b[0]);
value->type = glsl_type::bool_type;
}
value = new ir_constant(!op[0]->value.b[0]);
value->type = glsl_type::bool_type;
break;
case ir_binop_mul:
op[0] = ir->operands[0]->constant_expression_value();
op[1] = ir->operands[1]->constant_expression_value();
if (op[0] && op[1] && ir->operands[0]->type == ir->operands[1]->type) {
if (ir->operands[0]->type == ir->operands[1]->type) {
if (ir->operands[1]->type == glsl_type::float_type) {
value = new ir_constant(op[0]->value.f[0] * op[1]->value.f[0]);
value->type = glsl_type::float_type;
}
}
if (value)
value->type = ir->operands[1]->type;
break;
case ir_binop_logic_and:
op[0] = ir->operands[0]->constant_expression_value();
op[1] = ir->operands[1]->constant_expression_value();
if (op[0] && op[1]) {
value = new ir_constant(op[0]->value.b[0] && op[1]->value.b[0]);
value->type = glsl_type::bool_type;
}
value = new ir_constant(op[0]->value.b[0] && op[1]->value.b[0]);
value->type = glsl_type::bool_type;
break;
case ir_binop_logic_or:
op[0] = ir->operands[0]->constant_expression_value();
op[1] = ir->operands[1]->constant_expression_value();
if (op[0] && op[1]) {
value = new ir_constant(op[0]->value.b[0] || op[1]->value.b[0]);
value->type = glsl_type::bool_type;
}
value = new ir_constant(op[0]->value.b[0] || op[1]->value.b[0]);
value->type = glsl_type::bool_type;
break;
default:
break;