[RISCV] Change type of Zicbop prefetch operand to GPRMem (#139888)
Prior to this commit PREFETCH_* instructions considered their operand
register to be a simple GPR which is not entirely correct as it is a
base address for possible prefetching operation (According to cmobase
v1.0.1)
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfoZicbo.td b/llvm/lib/Target/RISCV/RISCVInstrInfoZicbo.td
index 56c8704..e44bdcb 100644
--- a/llvm/lib/Target/RISCV/RISCVInstrInfoZicbo.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfoZicbo.td
@@ -37,7 +37,7 @@
let hasSideEffects = 0, mayLoad = 1, mayStore = 1 in
class Prefetch_ri<bits<5> optype, string opcodestr>
- : RVInstS<0b110, OPC_OP_IMM, (outs), (ins GPR:$rs1, simm12_lsb00000:$imm12),
+ : RVInstS<0b110, OPC_OP_IMM, (outs), (ins GPRMem:$rs1, simm12_lsb00000:$imm12),
opcodestr, "${imm12}(${rs1})"> {
let Inst{11-7} = 0b00000;
let rs2 = optype;
