MOVF - MIPS instruction reference

movfMove if FP condition false 
Copies $t2 into $t1 if the FP condition flag (flag 0 by default) is false.
Forms  movf ,   
 movf , ,   
Copies $t2 into $t1 if FP condition flag N (specified by the third operand) is false (0). Allows results of multiple simultaneous FP comparisons to control integer register moves.
Operands $t1 Any general-purpose register, $0 to $31, using its numeric or named spelling, such as $8 or $t0 ($zero is $0; $ra is $31). 
$t2 A general-purpose register. It may be the same register as $t1. 
cc A floating-point condition flag number, 0 to 7. Comparisons set these flags; bc1t and bc1f test them. 
Allows integer register updates to be conditioned on the result of a previous FP comparison (e.g., c.eq.s, c.lt.s).
 .data
a: .float 1.0
b: .float 2.0
.text
# movf reads condition flag 0; set it false, then inspect $t2: 7 after the conditional copy.
l.s $f0, a
l.s $f2, b
c.lt.s $f2, $f0
li $t1, 7
li $t2, 0
movf $t2, $t1, 0