`-loongarch-numeric-reg` for llvm-mc and llc.
`-M numeric` (which matches GNU objdump) for llvm-objdump and llvm-mc.
Reviewed By: SixWeining
Differential Revision: https://reviews.llvm.org/D141743
In order to be compatible with the form of the atomic instruction in
GAS that accepts the fourth operand as 0 (i.e. `am* $rd, $rk, $rj, 0`),
we need to treat `$rj, 0` as one operand, but only print `$rj`.
For this, the number of result operands of inline assembly memory
operand `ZB` constraint is modified to 2 (reg + 0).
Restrictions on register usage in `am*` instructions have also been
adjusted. When `$rd` is equal to `$r0`, the instruction must be
considered legal, because of some special usage like `PseudoUNIMP`.
Reviewed By: SixWeining, xen0n
Differential Revision: https://reviews.llvm.org/D139303
This patch adds a '$' prefix to register name in InstPrinter that I missed in initial patches.
Reviewed By: xen0n
Differential Revision: https://reviews.llvm.org/D119813
This patch introduces basic tablegen infra such as
LoongArch{InstrFormats,InstrInfo,RegisterInfo,CallingConv,}.td.
For now, only add instruction definitions for LoongArch basic integer
operations.
Our initial target is a working MC layer rather than codegen,
so appropriate SelectionDAG patterns will come later.
Differential revision: https://reviews.llvm.org/D115861
