Square vector

0001d288: c8890000 lwc2 gtedr09_ir1,0x0000(r4)
0001d28c: c88a0004 lwc2 gtedr10_ir2,0x0004(r4)
0001d290: c88b0008 lwc2 gtedr11_ir3,0x0008(r4)
0001d294: 00000000 nop
0001d298: 4aa80428 sqr
0001d29c: e8b90000 swc2 gtedr25_mac1,0x0000(r5)
0001d2a0: e8ba0004 swc2 gtedr26_mac2,0x0004(r5)
0001d2a4: e8bb0008 swc2 gtedr27_mac3,0x0008(r5)
0001d2a8: 03e00008 jr r31
0001d2ac: 00a01021 addu r2,r5,r0