[llvm] [AMDGPU] Treat XDL ops as TRANS on gfx12 (PR #130692)

[Changpeng Fang via llvm-commits]

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@@ -10262,6 +10262,8 @@ bool SIInstrInfo::isGlobalMemoryObject(const MachineInstr *MI) const {
 
 bool SIInstrInfo::isXDL(const MachineInstr &MI) const {
   unsigned Opcode = MI.getOpcode();
+  if (AMDGPU::isGFX12(ST))
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changpeng wrote:

  As you may have already known, a WMMA does not necessarily be a XDL for downstream branches.
Is AMDGPU::isGFX12(ST) the same as AMDGPU::isGFX12Plus(ST)? So we need to be careful for downstream.

https://github.com/llvm/llvm-project/pull/130692