Base class for ValueHandlers used for arguments coming into the current function, or for return values received from a call. More...
#include "llvm/CodeGen/GlobalISel/CallLowering.h"
Public Member Functions | |
| IncomingValueHandler (MachineIRBuilder &MIRBuilder, MachineRegisterInfo &MRI) | |
| Register | buildExtensionHint (const CCValAssign &VA, Register SrcReg, LLT NarrowTy) |
Insert G_ASSERT_ZEXT/G_ASSERT_SEXT or other hint instruction based on VA, returning the new register if a hint was inserted. | |
| void | assignValueToReg (Register ValVReg, Register PhysReg, const CCValAssign &VA) override |
| Provides a default implementation for argument handling. | |
 Public Member Functions inherited from llvm::CallLowering::ValueHandler | |
| ValueHandler (bool IsIncoming, MachineIRBuilder &MIRBuilder, MachineRegisterInfo &MRI) | |
| virtual | ~ValueHandler ()=default |
| bool | isIncomingArgumentHandler () const |
| Returns true if the handler is dealing with incoming arguments, i.e. | |
| virtual Register | getStackAddress (uint64_t MemSize, int64_t Offset, MachinePointerInfo &MPO, ISD::ArgFlagsTy Flags)=0 |
| Materialize a VReg containing the address of the specified stack-based object. | |
| virtual LLT | getStackValueStoreType (const DataLayout &DL, const CCValAssign &VA, ISD::ArgFlagsTy Flags) const |
Return the in-memory size to write for the argument at VA. | |
| virtual void | assignValueToReg (Register ValVReg, Register PhysReg, const CCValAssign &VA)=0 |
| The specified value has been assigned to a physical register, handle the appropriate COPY (either to or from) and mark any relevant uses/defines as needed. | |
| virtual void | assignValueToAddress (Register ValVReg, Register Addr, LLT MemTy, const MachinePointerInfo &MPO, const CCValAssign &VA)=0 |
| The specified value has been assigned to a stack location. | |
| virtual void | assignValueToAddress (const ArgInfo &Arg, unsigned ValRegIndex, Register Addr, LLT MemTy, const MachinePointerInfo &MPO, const CCValAssign &VA) |
| An overload which takes an ArgInfo if additional information about the arg is needed. | |
| virtual unsigned | assignCustomValue (ArgInfo &Arg, ArrayRef< CCValAssign > VAs, std::function< void()> *Thunk=nullptr) |
Handle custom values, which may be passed into one or more of VAs. | |
| void | copyArgumentMemory (const ArgInfo &Arg, Register DstPtr, Register SrcPtr, const MachinePointerInfo &DstPtrInfo, Align DstAlign, const MachinePointerInfo &SrcPtrInfo, Align SrcAlign, uint64_t MemSize, CCValAssign &VA) const |
Do a memory copy of MemSize bytes from SrcPtr to DstPtr. | |
| Register | extendRegister (Register ValReg, const CCValAssign &VA, unsigned MaxSizeBits=0) |
| Extend a register to the location type given in VA, capped at extending to at most MaxSize bits. | |
Additional Inherited Members | |
| Public Attributes inherited from llvm::CallLowering::ValueHandler | |
| MachineIRBuilder & | MIRBuilder |
| MachineRegisterInfo & | MRI |
| const bool | IsIncomingArgumentHandler |
Detailed Description
Base class for ValueHandlers used for arguments coming into the current function, or for return values received from a call.
Definition at line 323 of file CallLowering.h.
Constructor & Destructor Documentation
◆ IncomingValueHandler()
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inline |
Definition at line 324 of file CallLowering.h.
Member Function Documentation
◆ assignValueToReg()
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overridevirtual |
Provides a default implementation for argument handling.
Implements llvm::CallLowering::ValueHandler.
Definition at line 1277 of file CallLowering.cpp.
References llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildTrunc(), llvm::CCValAssign::getLocVT(), isCopyCompatibleType(), and MRI.
◆ buildExtensionHint()
| Register CallLowering::IncomingValueHandler::buildExtensionHint | ( | const CCValAssign & | VA, |
| Register | SrcReg, | ||
| LLT | NarrowTy | ||
| ) |
Insert G_ASSERT_ZEXT/G_ASSERT_SEXT or other hint instruction based on VA, returning the new register if a hint was inserted.
Definition at line 1236 of file CallLowering.cpp.
References llvm::MachineIRBuilder::buildAssertSExt(), llvm::MachineIRBuilder::buildAssertZExt(), llvm::CCValAssign::getLocInfo(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getScalarSizeInBits(), MRI, llvm::CCValAssign::SExt, and llvm::CCValAssign::ZExt.
The documentation for this struct was generated from the following files:
- include/llvm/CodeGen/GlobalISel/CallLowering.h
- lib/CodeGen/GlobalISel/CallLowering.cpp
