[Mesa-dev] [RFC 1/4] glsl IR: add always_active_io attribute to ir_variable

The value will be set in separate-shader program when an input/output must remains active (i.e. deadcode removal isn't allowed because it will create interface location/name-matching mismatch) v3: * Rename the attribute * Use ir_variable directly instead of ir_variable_refcount_visitor * Move the

[Mesa-dev] [RFC 1/4] glsl IR: add always_active_io attribute to ir_variable

The value will be set in separate-shader program when an input/output must remains active (i.e. deadcode removal isn't allowed because it will create interface location/name-matching mismatch) v3: * Rename the attribute * Use ir_variable directly instead of ir_variable_refcount_visitor * Move the