[llvm] [TableGen] Require DAG argument for complex operands in InstAlias (PR #136411)

[David Green via llvm-commits]

https://github.com/davemgreen commented:

I usually think of instructions as the MI representation where the operands are just flattened and inorder.

The Arm / AArch64 look OK to me though.

https://github.com/llvm/llvm-project/pull/136411