llvm-project

981f25a8 - [TableGen] Require complex operands in InstAlias to be specified as DAGs (#136411)

[TableGen] Require complex operands in InstAlias to be specified as DAGs (#136411) Currently, complex operands of an instruction are flattened in the resulting DAG of `InstAlias`. This change makes it required to specify complex operands in `InstAlias` as sub-DAGs: ``` InstAlias<"foo $rd, $rs1, $rs2", (Inst RC:$rd, (ComplexOp RC:$rs1, GR0, 42), SimpleOp:$rs2)>; ``` instead of ``` InstAlias<"foo $rd, $rs1, $rs2", (Inst RC:$rd, RC:$rs1, GR0, 42, SimpleOp:$rs2)>; ``` The advantages of the new syntax are improved readability and more robust type checking, although it is a bit more verbose.