[llvm] [AMDGPU][MC] Instructions not to be supported in GFX940 (PR #109225)

[Matt Arsenault via llvm-commits]

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@@ -3277,12 +3277,18 @@ defm BUFFER_ATOMIC_XOR_X2       : MUBUF_Real_Atomic_vi <0x6a>;
 defm BUFFER_ATOMIC_INC_X2       : MUBUF_Real_Atomic_vi <0x6b>;
 defm BUFFER_ATOMIC_DEC_X2       : MUBUF_Real_Atomic_vi <0x6c>;
 
-defm BUFFER_STORE_LDS_DWORD     : MUBUF_Real_vi_gfx90a <0x3d>;
+let AssemblerPredicate = isGFX8GFX9NotGFX90A in {
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arsenm wrote:

You generally shouldn't need to touch AssemblerPredicate. The SubtargetPredicate on the pseudodefintion is wrong, should fix it there.

https://github.com/llvm/llvm-project/pull/109225