[llvm] [AMDGPU] Add MachineVerifer check to detect illegal copies from VGPR to SGPR (PR #105494)

[Aditi Medhane via llvm-commits]

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+# RUN: not --crash llc -march=amdgcn -mcpu=gfx1200 -run-pass=machineverifier %s 2>&1 | FileCheck -check-prefix=ERR %s
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AditiRM wrote:

Done.

https://github.com/llvm/llvm-project/pull/105494