[llvm] AMDGPU: Use OtherPredicates for some pseudo DOT instruction definitio… (PR #84234)

[Changpeng Fang via llvm-commits]

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@@ -480,10 +480,12 @@ multiclass VOP3PDOTF8Inst <string OpName, SDPatternOperator intrinsic_node> {
                                           i32:$src2_modifiers, f32:$src2)>;
 }
 
+let OtherPredicates = [isGFX12Plus] in {
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changpeng wrote:

It looks to me these dot4_f32_* are only generated with gfx1200. And I don't know exactly whether they belong to Dot9Insts. If yes, we may use [isGFX12Plus, HasDot9Insts]

https://github.com/llvm/llvm-project/pull/84234