Pengcheng Wang 9570bf978d
[TableGen][MacroFusion] Predicate if the first inst has the same register (#137778)
We rename `SameReg` to `SecondInstHasSameReg ` and add
`FirstInstHasSameReg `
which has the logic but applies to the first instruction.

We have some cases that require the first instruction has the same
input/output register.
2025-05-13 19:05:42 +08:00
..