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glsl: Add an ir_expression triop constructor with type inference.

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We already have ir_expression constructors for unary and binary
operations, which automatically infer the type based on the opcode and
operand types.

These are convenient and also required for ir_builder support.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
This commit is contained in:
Kenneth Graunke
2013-09-03 11:52:40 -07:00
parent 183f7a3e6f
commit 7f0f60cd84
2 changed files with 36 additions and 0 deletions
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31
src/glsl/ir.cpp
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@@ -413,6 +413,37 @@ ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1)
}
}
ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1,
ir_rvalue *op2)
{
this->ir_type = ir_type_expression;
this->operation = ir_expression_operation(op);
this->operands[0] = op0;
this->operands[1] = op1;
this->operands[2] = op2;
this->operands[3] = NULL;
assert(op > ir_last_binop && op <= ir_last_triop);
switch (this->operation) {
case ir_triop_fma:
case ir_triop_lrp:
case ir_triop_bitfield_extract:
case ir_triop_vector_insert:
this->type = op0->type;
break;
case ir_triop_bfi:
this->type = op1->type;
break;
default:
assert(!"not reached: missing automatic type setup for ir_expression");
this->type = glsl_type::float_type;
}
}
unsigned int
ir_expression::get_num_operands(ir_expression_operation op)
{