I'm studying the AMD ISA to develop a performance estimator. Using kernel analyzer I got the disassembly of a simple kernel, which contains the following instruction
VFETCH R1.xy__, R0.z, fc174 FORMAT(32_32_FLOAT) MEGA(8)
In both Evergreen ISA and microcode and R700 ISA references I'm not able to find the specification of the VFETCH instruction.
Can you help me?