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glsl: Add IR builder support for generating return statements.

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We use "ret" as the function name since "return" is a C++ keyword, and
"ir_return" is already a class name.

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 16:44:25 -07:00
parent f72a8498e7
commit d716b3376c
2 changed files with 9 additions and 0 deletions
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7
src/glsl/ir_builder.cpp
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@ -76,6 +76,13 @@ assign(deref lhs, operand rhs, operand condition)
return assign(lhs, rhs, condition, (1 << lhs.val->type->vector_elements) - 1);
}
ir_return *
ret(operand retval)
{
void *mem_ctx = ralloc_parent(retval.val);
return new(mem_ctx) ir_return(retval.val);
}
ir_swizzle *
swizzle(operand a, int swizzle, int components)
{

2
src/glsl/ir_builder.h
View file

@ -125,6 +125,8 @@ ir_assignment *assign(deref lhs, operand rhs, int writemask);
ir_assignment *assign(deref lhs, operand rhs, operand condition);
ir_assignment *assign(deref lhs, operand rhs, operand condition, int writemask);
ir_return *ret(operand retval);
ir_expression *expr(ir_expression_operation op, operand a);
ir_expression *expr(ir_expression_operation op, operand a, operand b);
ir_expression *expr(ir_expression_operation op, operand a, operand b, operand c);