5.7.1.13 Jals Option

The -mjals option enables the generation of microMIPS jals instructions, which have a shorter, 16-bit delay slot. The jal MIPS32 instruction requires a 32-bit instruction to fill its delay slot.

The -mno-jals option disables the generation of jals instructions. You might need to use this option if you have link errors when attempting to link a microMIPS object/library with a MIPS32 object/library.