The table below lists the v2sf operations for which hardware
support exists. a, b and c are v2sf
values and x is an integral value.
| C code | MIPS instruction
|
a + b | add.ps
|
a - b | sub.ps
|
-a | neg.ps
|
a * b | mul.ps
|
a * b + c | madd.ps
|
a * b - c | msub.ps
|
-(a * b + c) | nmadd.ps
|
-(a * b - c) | nmsub.ps
|
x ? a : b | movn.ps/movz.ps
|
Note that the multiply-accumulate instructions can be disabled
using the command-line option -mno-fused-madd.