diff options
Diffstat (limited to 'llvm/lib/Target/RISCV/GISel')
| -rw-r--r-- | llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp | 12 | ||||
| -rw-r--r-- | llvm/lib/Target/RISCV/GISel/RISCVRegisterBankInfo.cpp | 8 |
2 files changed, 8 insertions, 12 deletions
diff --git a/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp b/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp index 34026ed..ecfb5fe 100644 --- a/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp +++ b/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp @@ -439,18 +439,6 @@ bool RISCVCallLowering::canLowerReturn(MachineFunction &MF, CCState CCInfo(CallConv, IsVarArg, MF, ArgLocs, MF.getFunction().getContext()); - const RISCVSubtarget &Subtarget = MF.getSubtarget<RISCVSubtarget>(); - - std::optional<unsigned> FirstMaskArgument = std::nullopt; - // Preassign the first mask argument. - if (Subtarget.hasVInstructions()) { - for (const auto &ArgIdx : enumerate(Outs)) { - MVT ArgVT = MVT::getVT(ArgIdx.value().Ty); - if (ArgVT.isVector() && ArgVT.getVectorElementType() == MVT::i1) - FirstMaskArgument = ArgIdx.index(); - } - } - for (unsigned I = 0, E = Outs.size(); I < E; ++I) { MVT VT = MVT::getVT(Outs[I].Ty); if (CC_RISCV(I, VT, VT, CCValAssign::Full, Outs[I].Flags[0], CCInfo, diff --git a/llvm/lib/Target/RISCV/GISel/RISCVRegisterBankInfo.cpp b/llvm/lib/Target/RISCV/GISel/RISCVRegisterBankInfo.cpp index 597dd12..9f9ae2f 100644 --- a/llvm/lib/Target/RISCV/GISel/RISCVRegisterBankInfo.cpp +++ b/llvm/lib/Target/RISCV/GISel/RISCVRegisterBankInfo.cpp @@ -324,6 +324,10 @@ RISCVRegisterBankInfo::getInstrMapping(const MachineInstr &MI) const { OpdsMapping[0] = GPRValueMapping; + // Atomics always use GPR destinations. Don't refine any further. + if (cast<GLoad>(MI).isAtomic()) + break; + // Use FPR64 for s64 loads on rv32. if (GPRSize == 32 && Size.getFixedValue() == 64) { assert(MF.getSubtarget<RISCVSubtarget>().hasStdExtD()); @@ -358,6 +362,10 @@ RISCVRegisterBankInfo::getInstrMapping(const MachineInstr &MI) const { OpdsMapping[0] = GPRValueMapping; + // Atomics always use GPR sources. Don't refine any further. + if (cast<GStore>(MI).isAtomic()) + break; + // Use FPR64 for s64 stores on rv32. if (GPRSize == 32 && Size.getFixedValue() == 64) { assert(MF.getSubtarget<RISCVSubtarget>().hasStdExtD()); |