This entry will focus on a subroutine in Super Mario 64, USA version, for the Nintendo 64. It's a MIPS III subroutine at offset 6CD8 (hexadecimal) within the ROM.
Super Mario 64 appears to have been compiled with one of the earliest compilers available for the Nintendo 64. It does not schedule instructions well; a modern compiler could do much better.
You should read the entries on the MIPS instruction set first.
