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| author | Richard-Qin-X <richard.qin.001@gmail.com> | 2026-08-11 20:08:36 +0800 |
|---|---|---|
| committer | Richard-Qin-X <richard.qin.001@gmail.com> | 2026-08-11 20:08:36 +0800 |
| commit | 551f0b3fcd6f797ed6dca90f39123b0359396dcb (patch) | |
| tree | ccef579ebdf4f1df9bf2b5f08062b66c216b19bd /backend/lib/Target/RISCV/RISCVCallLowering.cpp | |
| parent | 8b797159e6c8fe1294fd2d26de3bd0992c61ea24 (diff) | |
| download | rcc-project-551f0b3fcd6f797ed6dca90f39123b0359396dcb.tar.gz rcc-project-551f0b3fcd6f797ed6dca90f39123b0359396dcb.tar.xz | |
[RISCV] Match LLVM call-frame pseudo semantics
Diffstat (limited to 'backend/lib/Target/RISCV/RISCVCallLowering.cpp')
| -rw-r--r-- | backend/lib/Target/RISCV/RISCVCallLowering.cpp | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/backend/lib/Target/RISCV/RISCVCallLowering.cpp b/backend/lib/Target/RISCV/RISCVCallLowering.cpp index fd01d52..3a5805a 100644 --- a/backend/lib/Target/RISCV/RISCVCallLowering.cpp +++ b/backend/lib/Target/RISCV/RISCVCallLowering.cpp @@ -1172,20 +1172,20 @@ createMemoryOperand(MachineFunction &Function, MemoryAccessFlags Accesses, std:: [[nodiscard]] Expected<void> emitCallFrameAdjustment(MachineIRBuilder &Builder, InstructionOpcode OpcodeValue, - const CallFrameRequirements &Frame, - MachineInstrFlag Flag) { + const CallFrameRequirements &Frame) { + if (Frame.SizeBytes > static_cast<std::uint64_t>(std::numeric_limits<std::int64_t>::max())) { + return makeUnexpected(ErrorCode::Unsupported, + "RISC-V call-frame size does not fit a MIR immediate"); + } auto Instruction = Builder.buildInstr(targetOpcode(OpcodeValue)); if (!Instruction) return std::unexpected(Instruction.error()); - auto Size = addUnsignedImmediate(*Instruction, Frame.SizeBytes); + auto Size = Instruction->addImmediate(static_cast<std::int64_t>(Frame.SizeBytes)); if (!Size) return std::unexpected(Size.error()); - auto Align = addUnsignedImmediate(*Instruction, Frame.Align.bytes()); - if (!Align) - return std::unexpected(Align.error()); - auto Flags = Instruction->setFlags({Flag}); - if (!Flags) - return std::unexpected(Flags.error()); + auto PreparedBytes = Instruction->addImmediate(0); + if (!PreparedBytes) + return std::unexpected(PreparedBytes.error()); auto Built = Instruction->build(); if (!Built) return std::unexpected(Built.error()); @@ -1371,8 +1371,8 @@ emitOutgoingArguments(MachineIRBuilder &Builder, const CallLoweringPlan &Plan, [[nodiscard]] Expected<void> emitCall(MachineIRBuilder &Builder, const CallLoweringPlan &Plan) { if (Plan.callFrame().EmitSetup) { - auto Down = emitCallFrameAdjustment(Builder, InstructionOpcode::ADJCALLSTACKDOWN, - Plan.callFrame(), MachineInstrFlag::FrameSetup); + auto Down = + emitCallFrameAdjustment(Builder, InstructionOpcode::ADJCALLSTACKDOWN, Plan.callFrame()); if (!Down) return std::unexpected(Down.error()); } @@ -1388,8 +1388,7 @@ emitOutgoingArguments(MachineIRBuilder &Builder, const CallLoweringPlan &Plan, return std::unexpected(Call.error()); if (Plan.callFrame().EmitDestroy) { - auto Up = emitCallFrameAdjustment(Builder, InstructionOpcode::ADJCALLSTACKUP, Plan.callFrame(), - MachineInstrFlag::FrameDestroy); + auto Up = emitCallFrameAdjustment(Builder, InstructionOpcode::ADJCALLSTACKUP, Plan.callFrame()); if (!Up) return std::unexpected(Up.error()); } |