There are four patches in this folder. Which one to use depends on what ROM you are using.

If you are using the version that INCLUDES Super Mario World, and it does NOT have a header, use smasw_brickfix_sFc.ips.

If you are using the version that INCLUDES Super Mario World, and it HAS a header, use smasw_brickfix_sMc.ips.
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If you are using the version that DOESN'T include Super Mario World, and it does NOT have a header, use smas_brickfix_sFc.ips.

If you are using the version that DOESN'T include Super Mario World, and it HAS a header, use smas_brickfix_sMc.ips.