[llvm] [AMDGPU] Remove s_set_inst_prefetch_distance support from GFX12 (PR #78786)

[Jay Foad via llvm-commits]

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@@ -69,15 +69,6 @@ s_wait_alu depctr_va_sdst(3)
 s_wait_alu depctr_va_vdst(14) depctr_va_sdst(6) depctr_vm_vsrc(6)
 // GFX12: encoding: [0x9b,0xed,0x88,0xbf]
 
-s_inst_prefetch 0x1234
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jayfoad wrote:

Please add one example of this instruction to `test/MC/AMDGPU/gfx12_unsupported.s`.

https://github.com/llvm/llvm-project/pull/78786