[llvm-bugs] [Bug 43485] New: [AMDGPU][MC][GFX10] SOP instructions with src0=null cannot be decoded

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43485

            Bug ID: 43485
           Summary: [AMDGPU][MC][GFX10] SOP instructions with src0=null
                    cannot be decoded
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: AMDGPU
          Assignee: unassignedbugs at nondot.org
          Reporter: dpreobrazhensky at luxoft.com
                CC: llvm-bugs at lists.llvm.org

These instructions break disassembler - an assert is triggered. An example:

    0x7d,0x00,0x80,0x91

Expected result is the following:

    s_ashr_i64 s[0:1], null, s0

Actual result: an assert.

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