BPFISelLowering.cpp File Reference

#include "BPFISelLowering.h"
#include "BPF.h"
#include "BPFSubtarget.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "BPFGenCallingConv.inc"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "bpf-lower"
#define	SET_NEWCC(X, Y)

Functions
static void	fail (const SDLoc &DL, SelectionDAG &DAG, const Twine &Msg, SDValue Val={})
static SDValue	convertLocValType (SelectionDAG &DAG, const SDLoc &DL, const CCValAssign &VA, EVT RegVT, SDValue ArgValue)
static void	resetRegMaskBit (const TargetRegisterInfo *TRI, uint32_t *RegMask, MCRegister Reg)
static uint32_t *	regMaskFromTemplate (const TargetRegisterInfo *TRI, MachineFunction &MF, const uint32_t *BaseRegMask)
static void	NegateCC (SDValue &LHS, SDValue &RHS, ISD::CondCode &CC)
static Function *	createBPFUnreachable (Module *M)
static SDValue	getTargetNode (ConstantPoolSDNode *N, const SDLoc &DL, EVT Ty, SelectionDAG &DAG, unsigned Flags)
static SDValue	getTargetNode (JumpTableSDNode *N, const SDLoc &DL, EVT Ty, SelectionDAG &DAG, unsigned Flags)

Variables
static cl::opt< bool >	BPFExpandMemcpyInOrder ("bpf-expand-memcpy-in-order", cl::Hidden, cl::init(false), cl::desc("Expand memcpy into load/store pairs in order"))
static cl::opt< unsigned >	BPFMinimumJumpTableEntries ("bpf-min-jump-table-entries", cl::init(13), cl::Hidden, cl::desc("Set minimum number of entries to use a jump table on BPF"))
static cl::opt< bool >	BPFAllowsLibcalls ("bpf-allows-libcalls", cl::Hidden, cl::init(false), cl::desc("Allow libcalls instead of rejecting unsupported built-in " "functions"))

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "bpf-lower"

Definition at line 36 of file BPFISelLowering.cpp.

SET_NEWCC

#define SET_NEWCC	(		X,
			Y )

Value:

  case ISD::X: \
    if (is32BitCmp && HasJmp32) \
      NewCC = isSelectRROp ? BPF::Y##_rr_32 : BPF::Y##_ri_32; \
    else \
      NewCC = isSelectRROp ? BPF::Y##_rr : BPF::Y##_ri; \
    break

Referenced by llvm::BPFTargetLowering::EmitInstrWithCustomInserter().

Function Documentation

convertLocValType()

SDValue convertLocValType ( SelectionDAG & DAG, const SDLoc & DL, const CCValAssign & VA, EVT RegVT, SDValue ArgValue )

static

Definition at line 393 of file BPFISelLowering.cpp.

References llvm::ISD::AssertSext, llvm::ISD::AssertZext, DL, llvm::CCValAssign::Full, llvm::CCValAssign::getLocInfo(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getValueType(), llvm::CCValAssign::getValVT(), llvm::CCValAssign::SExt, llvm::ISD::TRUNCATE, and llvm::CCValAssign::ZExt.

createBPFUnreachable()

Function * createBPFUnreachable ( Module * M )

static

Definition at line 825 of file BPFISelLowering.cpp.

References BPF_TRAP, llvm::CallingConv::C, llvm::Function::Create(), llvm::DIBuilder::createFunction(), llvm::DIBuilder::createSubroutineType(), llvm::GlobalValue::ExternalWeakLinkage, llvm::FunctionType::get(), llvm::DIBuilder::getOrCreateTypeArray(), llvm::Type::getVoidTy(), llvm::Function::setCallingConv(), llvm::GlobalValue::setDSOLocal(), llvm::GlobalObject::setSection(), and llvm::Function::setSubprogram().

fail()

void fail ( const SDLoc & DL, SelectionDAG & DAG, const Twine & Msg, SDValue Val = {} )

static

Definition at line 51 of file BPFISelLowering.cpp.

References DL.

Referenced by checkAsyncContextProjectFunction(), checkAsyncFuncPointer(), checkConstantInt(), llvm::CoroAsyncEndInst::checkWellFormed(), checkWFAlloc(), checkWFDealloc(), and checkWFRetconPrototype().

getTargetNode() [1/2]

SDValue getTargetNode ( ConstantPoolSDNode * N, const SDLoc & DL, EVT Ty, SelectionDAG & DAG, unsigned Flags )

static

Definition at line 876 of file BPFISelLowering.cpp.

References DL, llvm::SelectionDAG::getTargetConstantPool(), and N.

getTargetNode() [2/2]

SDValue getTargetNode ( JumpTableSDNode * N, const SDLoc & DL, EVT Ty, SelectionDAG & DAG, unsigned Flags )

static

Definition at line 882 of file BPFISelLowering.cpp.

References DL, llvm::SelectionDAG::getTargetJumpTable(), and N.

NegateCC()

void NegateCC ( SDValue & LHS, SDValue & RHS, ISD::CondCode & CC )

static

Definition at line 730 of file BPFISelLowering.cpp.

References llvm::ISD::getSetCCSwappedOperands(), LHS, RHS, llvm::ISD::SETLE, llvm::ISD::SETLT, llvm::ISD::SETULE, llvm::ISD::SETULT, and std::swap().

regMaskFromTemplate()

uint32_t * regMaskFromTemplate ( const TargetRegisterInfo * TRI, MachineFunction & MF, const uint32_t * BaseRegMask )

static

Definition at line 487 of file BPFISelLowering.cpp.

References llvm::MachineFunction::allocateRegMask(), llvm::MachineOperand::getRegMaskSize(), and TRI.

resetRegMaskBit()

void resetRegMaskBit ( const TargetRegisterInfo * TRI, uint32_t * RegMask, MCRegister Reg )

static

Definition at line 481 of file BPFISelLowering.cpp.

References Reg, and TRI.

Variable Documentation

BPFAllowsLibcalls

cl::opt< bool > BPFAllowsLibcalls("bpf-allows-libcalls", cl::Hidden, cl::init(false), cl::desc("Allow libcalls instead of rejecting unsupported built-in " "functions")) ( "bpf-allows-libcalls" , cl::Hidden , cl::init(false) , cl::desc("Allow libcalls instead of rejecting unsupported built-in " "functions")  )

static

BPFExpandMemcpyInOrder

cl::opt< bool > BPFExpandMemcpyInOrder("bpf-expand-memcpy-in-order", cl::Hidden, cl::init(false), cl::desc("Expand memcpy into load/store pairs in order")) ( "bpf-expand-memcpy-in-order" , cl::Hidden , cl::init(false) , cl::desc("Expand memcpy into load/store pairs in order")  )

static

Referenced by llvm::BPFTargetLowering::BPFTargetLowering().

BPFMinimumJumpTableEntries

cl::opt< unsigned > BPFMinimumJumpTableEntries("bpf-min-jump-table-entries", cl::init(13), cl::Hidden, cl::desc("Set minimum number of entries to use a jump table on BPF")) ( "bpf-min-jump-table-entries" , cl::init(13) , cl::Hidden , cl::desc("Set minimum number of entries to use a jump table on BPF")  )

static

Referenced by llvm::BPFTargetLowering::BPFTargetLowering().