[clang] [llvm] [RFC][AMDGPU] Use `bf16` instead of `i16` for bfloat (PR #80908)

[Stanislav Mekhanoshin via llvm-commits]

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+// RUN: llvm-mc -arch=amdgcn -mcpu=gfx1100 -show-encoding %s | FileCheck %s
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rampitec wrote:

You also need a disasm test for this.

https://github.com/llvm/llvm-project/pull/80908