e92b7e9641
It is common to have ABI requirements for illegal types: For example, two i64 argument parts that originally came from an fp128 argument may have a different call ABI than ones that came from a i128 argument. The current calling convention lowering does not provide access to this information, so backends come up with various hacks to support it (like additional pre-analysis cached in CCState, or bypassing the default logic entirely). This PR adds the original IR type to InputArg/OutputArg and passes it down to CCAssignFn. It is not actually used anywhere yet, this just does the mechanical changes to thread through the new argument.
45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
//===-- RISCVCallingConv.h - RISC-V Custom CC Routines ----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the custom routines for the RISC-V Calling Convention.
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//
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//===----------------------------------------------------------------------===//
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#include "MCTargetDesc/RISCVBaseInfo.h"
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#include "llvm/CodeGen/CallingConvLower.h"
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namespace llvm {
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/// RISCVCCAssignFn - This target-specific function extends the default
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/// CCValAssign with additional information used to lower RISC-V calling
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/// conventions.
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typedef bool RISCVCCAssignFn(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo,
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ISD::ArgFlagsTy ArgFlags, CCState &State,
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bool IsRet, Type *OrigTy);
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bool CC_RISCV(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo, ISD::ArgFlagsTy ArgFlags,
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CCState &State, bool IsRet, Type *OrigTy);
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bool CC_RISCV_FastCC(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo, ISD::ArgFlagsTy ArgFlags,
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CCState &State, bool IsRet, Type *OrigTy);
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bool CC_RISCV_GHC(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo, ISD::ArgFlagsTy ArgFlags,
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Type *OrigTy, CCState &State);
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namespace RISCV {
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ArrayRef<MCPhysReg> getArgGPRs(const RISCVABI::ABI ABI);
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} // end namespace RISCV
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} // end namespace llvm
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