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LLVM 17.0.0git
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This file implements the lowering of LLVM calls to machine code calls for GlobalISel. More...
#include "AArch64CallLowering.h"#include "AArch64ISelLowering.h"#include "AArch64MachineFunctionInfo.h"#include "AArch64RegisterInfo.h"#include "AArch64Subtarget.h"#include "llvm/ADT/ArrayRef.h"#include "llvm/ADT/SmallVector.h"#include "llvm/Analysis/ObjCARCUtil.h"#include "llvm/CodeGen/Analysis.h"#include "llvm/CodeGen/CallingConvLower.h"#include "llvm/CodeGen/FunctionLoweringInfo.h"#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"#include "llvm/CodeGen/GlobalISel/Utils.h"#include "llvm/CodeGen/LowLevelTypeUtils.h"#include "llvm/CodeGen/MachineBasicBlock.h"#include "llvm/CodeGen/MachineFrameInfo.h"#include "llvm/CodeGen/MachineFunction.h"#include "llvm/CodeGen/MachineInstrBuilder.h"#include "llvm/CodeGen/MachineMemOperand.h"#include "llvm/CodeGen/MachineOperand.h"#include "llvm/CodeGen/MachineRegisterInfo.h"#include "llvm/CodeGen/MachineValueType.h"#include "llvm/CodeGen/TargetRegisterInfo.h"#include "llvm/CodeGen/TargetSubtargetInfo.h"#include "llvm/CodeGen/ValueTypes.h"#include "llvm/IR/Argument.h"#include "llvm/IR/Attributes.h"#include "llvm/IR/Function.h"#include "llvm/IR/Type.h"#include "llvm/IR/Value.h"#include <algorithm>#include <cassert>#include <cstdint>#include <iterator>Go to the source code of this file.
Macros | |
| #define | DEBUG_TYPE "aarch64-call-lowering" |
Functions | |
| static void | applyStackPassedSmallTypeDAGHack (EVT OrigVT, MVT &ValVT, MVT &LocVT) |
| static LLT | getStackValueStoreTypeHack (const CCValAssign &VA) |
| static bool | doesCalleeRestoreStack (CallingConv::ID CallConv, bool TailCallOpt) |
| static void | handleMustTailForwardedRegisters (MachineIRBuilder &MIRBuilder, CCAssignFn *AssignFn) |
| Helper function to compute forwarded registers for musttail calls. | |
| static bool | canGuaranteeTCO (CallingConv::ID CC, bool GuaranteeTailCalls) |
| Return true if the calling convention is one that we can guarantee TCO for. | |
| static bool | mayTailCallThisCC (CallingConv::ID CC) |
| Return true if we might ever do TCO for calls with this calling convention. | |
| static std::pair< CCAssignFn *, CCAssignFn * > | getAssignFnsForCC (CallingConv::ID CC, const AArch64TargetLowering &TLI) |
| Returns a pair containing the fixed CCAssignFn and the vararg CCAssignFn for CC. | |
| static unsigned | getCallOpcode (const MachineFunction &CallerF, bool IsIndirect, bool IsTailCall) |
| static const uint32_t * | getMaskForArgs (SmallVectorImpl< AArch64CallLowering::ArgInfo > &OutArgs, AArch64CallLowering::CallLoweringInfo &Info, const AArch64RegisterInfo &TRI, MachineFunction &MF) |
This file implements the lowering of LLVM calls to machine code calls for GlobalISel.
Definition in file AArch64CallLowering.cpp.
| #define DEBUG_TYPE "aarch64-call-lowering" |
Definition at line 50 of file AArch64CallLowering.cpp.
Definition at line 57 of file AArch64CallLowering.cpp.
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Return true if the calling convention is one that we can guarantee TCO for.
Definition at line 761 of file AArch64CallLowering.cpp.
References CC, llvm::CallingConv::Fast, llvm::CallingConv::SwiftTail, and llvm::CallingConv::Tail.
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Definition at line 343 of file AArch64CallLowering.cpp.
References llvm::CallingConv::Fast, llvm::CallingConv::SwiftTail, and llvm::CallingConv::Tail.
Referenced by llvm::AArch64CallLowering::lowerCall(), and llvm::AArch64CallLowering::lowerFormalArguments().
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Returns a pair containing the fixed CCAssignFn and the vararg CCAssignFn for CC.
Definition at line 785 of file AArch64CallLowering.cpp.
References CC, and llvm::AArch64TargetLowering::CCAssignFnForCall().
Referenced by llvm::AMDGPUCallLowering::areCalleeOutgoingArgsTailCallable(), llvm::AMDGPUCallLowering::doCallerAndCalleePassArgsTheSameWay(), llvm::AArch64CallLowering::lowerCall(), llvm::AMDGPUCallLowering::lowerCall(), and llvm::AMDGPUCallLowering::lowerTailCall().
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Definition at line 998 of file AArch64CallLowering.cpp.
References llvm::AArch64FunctionInfo::branchTargetEnforcement(), llvm::getBLRCallOpcode(), and llvm::MachineFunction::getInfo().
Referenced by llvm::AArch64CallLowering::lowerCall(), llvm::AMDGPUCallLowering::lowerCall(), llvm::ARMCallLowering::lowerCall(), and llvm::AMDGPUCallLowering::lowerTailCall().
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Definition at line 1015 of file AArch64CallLowering.cpp.
References llvm::SmallVectorBase< Size_T >::empty(), Info, and TRI.
Referenced by llvm::AArch64CallLowering::lowerCall().
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Definition at line 72 of file AArch64CallLowering.cpp.
References llvm::CCValAssign::getLocVT(), and llvm::CCValAssign::getValVT().
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Helper function to compute forwarded registers for musttail calls.
Computes the forwarded registers, sets MBB liveness, and emits COPY instructions that can be used to save + restore registers later.
Definition at line 488 of file AArch64CallLowering.cpp.
References llvm::MachineBasicBlock::addLiveIn(), llvm::MachineFunction::addLiveIn(), llvm::CCState::analyzeMustTailForwardedRegisters(), assert(), llvm::MachineIRBuilder::buildCopy(), F, llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::MachineIRBuilder::getMBB(), llvm::MachineIRBuilder::getMF(), llvm::MachineFrameInfo::hasMustTailInVarArgFunc(), llvm::CCState::isAllocated(), MBB, and llvm::SmallVectorTemplateBase< T, bool >::push_back().
Referenced by llvm::AArch64CallLowering::lowerFormalArguments().
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Return true if we might ever do TCO for calls with this calling convention.
Definition at line 767 of file AArch64CallLowering.cpp.
References llvm::CallingConv::C, CC, llvm::CallingConv::Fast, llvm::CallingConv::PreserveAll, llvm::CallingConv::PreserveMost, llvm::CallingConv::Swift, llvm::CallingConv::SwiftTail, and llvm::CallingConv::Tail.
1.9.6