#include "AArch64CallLowering.h"#include "AArch64ISelLowering.h"#include "AArch64MachineFunctionInfo.h"#include "AArch64Subtarget.h"#include "llvm/ADT/ArrayRef.h"#include "llvm/ADT/SmallVector.h"#include "llvm/CodeGen/Analysis.h"#include "llvm/CodeGen/CallingConvLower.h"#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"#include "llvm/CodeGen/GlobalISel/Utils.h"#include "llvm/CodeGen/LowLevelType.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/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 "llvm/Support/MachineValueType.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. More... | |
| static bool | canGuaranteeTCO (CallingConv::ID CC, bool GuaranteeTailCalls) |
| Return true if the calling convention is one that we can guarantee TCO for. More... | |
| static bool | mayTailCallThisCC (CallingConv::ID CC) |
| Return true if we might ever do TCO for calls with this calling convention. More... | |
| 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. More... | |
| 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) |
Detailed Description
This file implements the lowering of LLVM calls to machine code calls for GlobalISel.
Definition in file AArch64CallLowering.cpp.
Macro Definition Documentation
◆ DEBUG_TYPE
Definition at line 47 of file AArch64CallLowering.cpp.
Function Documentation
◆ applyStackPassedSmallTypeDAGHack()
Definition at line 54 of file AArch64CallLowering.cpp.
References llvm::MVT::i1, llvm::MVT::i16, and llvm::MVT::i8.
◆ canGuaranteeTCO()
|
static |
Return true if the calling convention is one that we can guarantee TCO for.
Definition at line 613 of file AArch64CallLowering.cpp.
References llvm::CallingConv::Fast, llvm::CallingConv::SwiftTail, and llvm::CallingConv::Tail.
Referenced by llvm::AArch64CallLowering::isEligibleForTailCallOptimization().
◆ doesCalleeRestoreStack()
|
static |
Definition at line 341 of file AArch64CallLowering.cpp.
References llvm::CallingConv::Fast, llvm::CallingConv::SwiftTail, and llvm::CallingConv::Tail.
Referenced by llvm::AArch64CallLowering::lowerCall(), and llvm::AArch64CallLowering::lowerFormalArguments().
◆ getAssignFnsForCC()
|
static |
Returns a pair containing the fixed CCAssignFn and the vararg CCAssignFn for CC.
Definition at line 636 of file AArch64CallLowering.cpp.
References llvm::AArch64TargetLowering::CCAssignFnForCall().
Referenced by llvm::AArch64CallLowering::lowerCall().
◆ getCallOpcode()
|
static |
Definition at line 849 of file AArch64CallLowering.cpp.
References llvm::ARCISD::BL, llvm::AArch64FunctionInfo::branchTargetEnforcement(), llvm::getBLRCallOpcode(), and llvm::MachineFunction::getInfo().
Referenced by llvm::ARMCallLowering::lowerCall(), and llvm::AArch64CallLowering::lowerCall().
◆ getMaskForArgs()
|
static |
Definition at line 866 of file AArch64CallLowering.cpp.
References llvm::TargetRegisterInfo::getCallPreservedMask(), Info, llvm::BitmaskEnumDetail::Mask(), and TRI.
Referenced by llvm::AArch64CallLowering::lowerCall().
◆ getStackValueStoreTypeHack()
|
static |
Definition at line 69 of file AArch64CallLowering.cpp.
References llvm::CCValAssign::getLocVT(), llvm::CCValAssign::getValVT(), llvm::MVT::i16, and llvm::MVT::i8.
◆ handleMustTailForwardedRegisters()
|
static |
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 469 of file AArch64CallLowering.cpp.
References llvm::MachineBasicBlock::addLiveIn(), llvm::MachineFunction::addLiveIn(), llvm::CCState::analyzeMustTailForwardedRegisters(), assert(), llvm::MachineIRBuilder::buildCopy(), F, llvm::MVT::f128, llvm::AArch64FunctionInfo::getForwardedMustTailRegParms(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::MachineIRBuilder::getMBB(), llvm::MachineIRBuilder::getMF(), llvm::MachineFrameInfo::hasMustTailInVarArgFunc(), llvm::MVT::i64, llvm::CCState::isAllocated(), and MBB.
Referenced by llvm::AArch64CallLowering::lowerFormalArguments().
◆ mayTailCallThisCC()
|
static |
Return true if we might ever do TCO for calls with this calling convention.
Definition at line 619 of file AArch64CallLowering.cpp.
References llvm::CallingConv::C, llvm::CallingConv::Fast, llvm::CallingConv::PreserveMost, llvm::CallingConv::Swift, llvm::CallingConv::SwiftTail, and llvm::CallingConv::Tail.
Referenced by llvm::AArch64CallLowering::isEligibleForTailCallOptimization().
