[llvm-bugs] [Bug 39318] New: [AMDGPU][MC] disassembly fails for VOP3P when SRC2 > 127

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=39318

            Bug ID: 39318
           Summary: [AMDGPU][MC] disassembly fails for VOP3P when SRC2 >
                    127
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: AMDGPU
          Assignee: unassignedbugs at nondot.org
          Reporter: tcorring at amd.com
                CC: llvm-bugs at lists.llvm.org

Several disassembly failures have been observed for VOP3P instructions where
SRC2 has a value >127.

Some brief experimentation also provoked an assert when NEG was used for SRC2.

Examples:

opcode: D38F0200 5C020102 ->   VK_PK_ADD_F16

opcode: D3920205 5C020B05 ->   VK_PK_MAX_F16

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