llvm-project

a2d717d3 - [RISCV] Prevent copying dummy_reg_pair_with_x0 in RISCVMakeCompressible. (#141261)

[RISCV] Prevent copying dummy_reg_pair_with_x0 in RISCVMakeCompressible. (#141261) dummy_reg_pair_with_x0 is the odd subregister of X0_Pair, but it isn't a real register. We need to copy X0 instead since X0_Pair reads as 0.