The FIR compiler is no longer supported in either the Standard or Advanced blocksets.
After installing Quartus® II and DSP builder versions 14.0 and higher, you will not see the FIR compiler among MegaCore functions in the Simulink Library Browser, under Altera DSP Builder Standard Blockset/MegaCore Functions. Unfortunately it's still shown in the DSP Builder Standard User Guide.
https://www.altera.com/en_US/pdfs/literature/hb/dspb/hb_dspb_std.pdf#page=70