| .text | |
| _start: | |
| rex/fxsave (%rax) | |
| rex64/fxsave (%rax) | |
| rex/fxsave (%r8) | |
| rex64/fxsave (%r8) | |
| rex/fxsave (,%r8) | |
| rex64/fxsave (,%r8) | |
| rex/fxsave (%r8,%r8) | |
| rex64/fxsave (%r8,%r8) | |
| # Test prefixes family. | |
| rex | |
| rex.B | |
| rex.X | |
| rex.XB | |
| rex.R | |
| rex.RB | |
| rex.RX | |
| rex.RXB | |
| rex.W | |
| rex.WB | |
| rex.WX | |
| rex.WXB | |
| rex.WR | |
| rex.WRB | |
| rex.WRX | |
| rex.WRXB |