# mv.swizzle

# Format

| 0..5 |6..10|11..15|16.20|21.....25|26.....30|31|  name    |
|------|-----|------|-----|---------|---------|--|----------|
| 19   | RT  | RA   |     | XO[0:4] | XO[5:9] |Rc| XL-Form  |
| 19   | RT  | RA   |imm  | imm     | iNNNN   |im| mv.swiz  |
| 19   | RT  | RA   |imm  | imm     | iNNNN   |im| fmv.swiz |

also f.mv

this gives an 11 bit immediate across bits 16 to 26 and bit 31.  a permutation based encoding should allow the 12 bits to be covered

* 3 bits X
* 3 bits Y
* 3 bits Z
* 3 bits W

except that the options are:

* 0b1NN index 0 thru 3 to place subelement in pos XYZW
* 0b000 to indicate "skip"
* 0b001 to indicate "constant 0"
* 0b010 to indicate "constant 1" (or 1.0)
* 0b011 is not needed.

Evaluating efforts to encode 12 bit swizzle into less proved unsuccessful: 7^4 wcomes out to 2,400 which is larger than 11 bits