diff --git a/lib/Target/Hexagon/HexagonCallingConvLower.cpp b/lib/Target/Hexagon/HexagonCallingConvLower.cpp deleted file mode 100644 index 8d78409aa01..00000000000 --- a/lib/Target/Hexagon/HexagonCallingConvLower.cpp +++ /dev/null @@ -1,206 +0,0 @@ -//===-- llvm/CallingConvLower.cpp - Calling Convention lowering -----------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements the Hexagon_CCState class, used for lowering and -// implementing calling conventions. Adapted from the machine independent -// version of the class (CCState) but this handles calls to varargs functions -// -//===----------------------------------------------------------------------===// - -#include "HexagonCallingConvLower.h" -#include "Hexagon.h" -#include "llvm/IR/DataLayout.h" -#include "llvm/Support/Debug.h" -#include "llvm/Support/ErrorHandling.h" -#include "llvm/Support/raw_ostream.h" -#include "llvm/Target/TargetMachine.h" -#include "llvm/Target/TargetRegisterInfo.h" -#include "llvm/Target/TargetSubtargetInfo.h" -using namespace llvm; - -Hexagon_CCState::Hexagon_CCState(CallingConv::ID CC, bool isVarArg, - const TargetMachine &tm, - SmallVectorImpl &locs, - LLVMContext &c) - : CallingConv(CC), IsVarArg(isVarArg), TM(tm), Locs(locs), Context(c) { - // No stack is used. - StackOffset = 0; - - UsedRegs.resize( - (TM.getSubtargetImpl()->getRegisterInfo()->getNumRegs() + 31) / 32); -} - -// HandleByVal - Allocate a stack slot large enough to pass an argument by -// value. The size and alignment information of the argument is encoded in its -// parameter attribute. -void Hexagon_CCState::HandleByVal(unsigned ValNo, EVT ValVT, - EVT LocVT, CCValAssign::LocInfo LocInfo, - int MinSize, int MinAlign, - ISD::ArgFlagsTy ArgFlags) { - unsigned Align = ArgFlags.getByValAlign(); - unsigned Size = ArgFlags.getByValSize(); - if (MinSize > (int)Size) - Size = MinSize; - if (MinAlign > (int)Align) - Align = MinAlign; - unsigned Offset = AllocateStack(Size, Align); - - addLoc(CCValAssign::getMem(ValNo, ValVT.getSimpleVT(), Offset, - LocVT.getSimpleVT(), LocInfo)); -} - -/// MarkAllocated - Mark a register and all of its aliases as allocated. -void Hexagon_CCState::MarkAllocated(unsigned Reg) { - const TargetRegisterInfo &TRI = *TM.getSubtargetImpl()->getRegisterInfo(); - for (MCRegAliasIterator AI(Reg, &TRI, true); AI.isValid(); ++AI) - UsedRegs[*AI/32] |= 1 << (*AI&31); -} - -/// AnalyzeFormalArguments - Analyze an ISD::FORMAL_ARGUMENTS node, -/// incorporating info about the formals into this state. -void -Hexagon_CCState::AnalyzeFormalArguments(const SmallVectorImpl - &Ins, - Hexagon_CCAssignFn Fn, - unsigned SretValueInRegs) { - unsigned NumArgs = Ins.size(); - unsigned i = 0; - - // If the function returns a small struct in registers, skip - // over the first (dummy) argument. - if (SretValueInRegs != 0) { - ++i; - } - - - for (; i != NumArgs; ++i) { - EVT ArgVT = Ins[i].VT; - ISD::ArgFlagsTy ArgFlags = Ins[i].Flags; - if (Fn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, *this, 0, 0, false)) { - dbgs() << "Formal argument #" << i << " has unhandled type " - << ArgVT.getEVTString() << "\n"; - abort(); - } - } -} - -/// AnalyzeReturn - Analyze the returned values of an ISD::RET node, -/// incorporating info about the result values into this state. -void -Hexagon_CCState::AnalyzeReturn(const SmallVectorImpl &Outs, - Hexagon_CCAssignFn Fn, - unsigned SretValueInRegs) { - - // For Hexagon, Return small structures in registers. - if (SretValueInRegs != 0) { - if (SretValueInRegs <= 32) { - unsigned Reg = Hexagon::R0; - addLoc(CCValAssign::getReg(0, MVT::i32, Reg, MVT::i32, - CCValAssign::Full)); - return; - } - if (SretValueInRegs <= 64) { - unsigned Reg = Hexagon::D0; - addLoc(CCValAssign::getReg(0, MVT::i64, Reg, MVT::i64, - CCValAssign::Full)); - return; - } - } - - - // Determine which register each value should be copied into. - for (unsigned i = 0, e = Outs.size(); i != e; ++i) { - EVT VT = Outs[i].VT; - ISD::ArgFlagsTy ArgFlags = Outs[i].Flags; - if (Fn(i, VT, VT, CCValAssign::Full, ArgFlags, *this, -1, -1, false)){ - dbgs() << "Return operand #" << i << " has unhandled type " - << VT.getEVTString() << "\n"; - abort(); - } - } -} - - -/// AnalyzeCallOperands - Analyze an ISD::CALL node, incorporating info -/// about the passed values into this state. -void -Hexagon_CCState::AnalyzeCallOperands(const SmallVectorImpl - &Outs, - Hexagon_CCAssignFn Fn, - int NonVarArgsParams, - unsigned SretValueSize) { - unsigned NumOps = Outs.size(); - - unsigned i = 0; - // If the called function returns a small struct in registers, skip - // the first actual parameter. We do not want to pass a pointer to - // the stack location. - if (SretValueSize != 0) { - ++i; - } - - for (; i != NumOps; ++i) { - EVT ArgVT = Outs[i].VT; - ISD::ArgFlagsTy ArgFlags = Outs[i].Flags; - if (Fn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, *this, - NonVarArgsParams, i+1, false)) { - dbgs() << "Call operand #" << i << " has unhandled type " - << ArgVT.getEVTString() << "\n"; - abort(); - } - } -} - -/// AnalyzeCallOperands - Same as above except it takes vectors of types -/// and argument flags. -void -Hexagon_CCState::AnalyzeCallOperands(SmallVectorImpl &ArgVTs, - SmallVectorImpl &Flags, - Hexagon_CCAssignFn Fn) { - unsigned NumOps = ArgVTs.size(); - for (unsigned i = 0; i != NumOps; ++i) { - EVT ArgVT = ArgVTs[i]; - ISD::ArgFlagsTy ArgFlags = Flags[i]; - if (Fn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, *this, -1, -1, - false)) { - dbgs() << "Call operand #" << i << " has unhandled type " - << ArgVT.getEVTString() << "\n"; - abort(); - } - } -} - -/// AnalyzeCallResult - Analyze the return values of an ISD::CALL node, -/// incorporating info about the passed values into this state. -void -Hexagon_CCState::AnalyzeCallResult(const SmallVectorImpl &Ins, - Hexagon_CCAssignFn Fn, - unsigned SretValueInRegs) { - - for (unsigned i = 0, e = Ins.size(); i != e; ++i) { - EVT VT = Ins[i].VT; - ISD::ArgFlagsTy Flags = ISD::ArgFlagsTy(); - if (Fn(i, VT, VT, CCValAssign::Full, Flags, *this, -1, -1, false)) { - dbgs() << "Call result #" << i << " has unhandled type " - << VT.getEVTString() << "\n"; - abort(); - } - } -} - -/// AnalyzeCallResult - Same as above except it's specialized for calls which -/// produce a single value. -void Hexagon_CCState::AnalyzeCallResult(EVT VT, Hexagon_CCAssignFn Fn) { - if (Fn(0, VT, VT, CCValAssign::Full, ISD::ArgFlagsTy(), *this, -1, -1, - false)) { - dbgs() << "Call result has unhandled type " - << VT.getEVTString() << "\n"; - abort(); - } -} diff --git a/lib/Target/Hexagon/HexagonCallingConvLower.h b/lib/Target/Hexagon/HexagonCallingConvLower.h deleted file mode 100644 index 738ed1a52a0..00000000000 --- a/lib/Target/Hexagon/HexagonCallingConvLower.h +++ /dev/null @@ -1,187 +0,0 @@ -//===-- HexagonCallingConvLower.h - Calling Conventions ---------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file declares the Hexagon_CCState class, used for lowering -// and implementing calling conventions. Adapted from the target independent -// version but this handles calls to varargs functions -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONCALLINGCONVLOWER_H -#define LLVM_LIB_TARGET_HEXAGON_HEXAGONCALLINGCONVLOWER_H - -#include "llvm/ADT/SmallVector.h" -#include "llvm/CodeGen/CallingConvLower.h" -#include "llvm/CodeGen/SelectionDAGNodes.h" - -// -// Need to handle varargs. -// -namespace llvm { - class TargetRegisterInfo; - class TargetMachine; - class Hexagon_CCState; - class SDNode; - struct EVT; - -/// Hexagon_CCAssignFn - This function assigns a location for Val, updating -/// State to reflect the change. -typedef bool Hexagon_CCAssignFn(unsigned ValNo, EVT ValVT, - EVT LocVT, CCValAssign::LocInfo LocInfo, - ISD::ArgFlagsTy ArgFlags, Hexagon_CCState &State, - int NonVarArgsParams, - int CurrentParam, - bool ForceMem); - - -/// CCState - This class holds information needed while lowering arguments and -/// return values. It captures which registers are already assigned and which -/// stack slots are used. It provides accessors to allocate these values. -class Hexagon_CCState { - CallingConv::ID CallingConv; - bool IsVarArg; - const TargetMachine &TM; - SmallVectorImpl &Locs; - LLVMContext &Context; - - unsigned StackOffset; - SmallVector UsedRegs; -public: - Hexagon_CCState(CallingConv::ID CC, bool isVarArg, const TargetMachine &TM, - SmallVectorImpl &locs, LLVMContext &c); - - void addLoc(const CCValAssign &V) { - Locs.push_back(V); - } - - LLVMContext &getContext() const { return Context; } - const TargetMachine &getTarget() const { return TM; } - unsigned getCallingConv() const { return CallingConv; } - bool isVarArg() const { return IsVarArg; } - - unsigned getNextStackOffset() const { return StackOffset; } - - /// isAllocated - Return true if the specified register (or an alias) is - /// allocated. - bool isAllocated(unsigned Reg) const { - return UsedRegs[Reg/32] & (1 << (Reg&31)); - } - - /// AnalyzeFormalArguments - Analyze an ISD::FORMAL_ARGUMENTS node, - /// incorporating info about the formals into this state. - void AnalyzeFormalArguments(const SmallVectorImpl &Ins, - Hexagon_CCAssignFn Fn, unsigned SretValueInRegs); - - /// AnalyzeReturn - Analyze the returned values of an ISD::RET node, - /// incorporating info about the result values into this state. - void AnalyzeReturn(const SmallVectorImpl &Outs, - Hexagon_CCAssignFn Fn, unsigned SretValueInRegs); - - /// AnalyzeCallOperands - Analyze an ISD::CALL node, incorporating info - /// about the passed values into this state. - void AnalyzeCallOperands(const SmallVectorImpl &Outs, - Hexagon_CCAssignFn Fn, int NonVarArgsParams, - unsigned SretValueSize); - - /// AnalyzeCallOperands - Same as above except it takes vectors of types - /// and argument flags. - void AnalyzeCallOperands(SmallVectorImpl &ArgVTs, - SmallVectorImpl &Flags, - Hexagon_CCAssignFn Fn); - - /// AnalyzeCallResult - Analyze the return values of an ISD::CALL node, - /// incorporating info about the passed values into this state. - void AnalyzeCallResult(const SmallVectorImpl &Ins, - Hexagon_CCAssignFn Fn, unsigned SretValueInRegs); - - /// AnalyzeCallResult - Same as above except it's specialized for calls which - /// produce a single value. - void AnalyzeCallResult(EVT VT, Hexagon_CCAssignFn Fn); - - /// getFirstUnallocated - Return the first unallocated register in the set, or - /// NumRegs if they are all allocated. - unsigned getFirstUnallocated(const unsigned *Regs, unsigned NumRegs) const { - for (unsigned i = 0; i != NumRegs; ++i) - if (!isAllocated(Regs[i])) - return i; - return NumRegs; - } - - /// AllocateReg - Attempt to allocate one register. If it is not available, - /// return zero. Otherwise, return the register, marking it and any aliases - /// as allocated. - unsigned AllocateReg(unsigned Reg) { - if (isAllocated(Reg)) return 0; - MarkAllocated(Reg); - return Reg; - } - - /// Version of AllocateReg with extra register to be shadowed. - unsigned AllocateReg(unsigned Reg, unsigned ShadowReg) { - if (isAllocated(Reg)) return 0; - MarkAllocated(Reg); - MarkAllocated(ShadowReg); - return Reg; - } - - /// AllocateReg - Attempt to allocate one of the specified registers. If none - /// are available, return zero. Otherwise, return the first one available, - /// marking it and any aliases as allocated. - unsigned AllocateReg(const unsigned *Regs, unsigned NumRegs) { - unsigned FirstUnalloc = getFirstUnallocated(Regs, NumRegs); - if (FirstUnalloc == NumRegs) - return 0; // Didn't find the reg. - - // Mark the register and any aliases as allocated. - unsigned Reg = Regs[FirstUnalloc]; - MarkAllocated(Reg); - return Reg; - } - - /// Version of AllocateReg with list of registers to be shadowed. - unsigned AllocateReg(const unsigned *Regs, const unsigned *ShadowRegs, - unsigned NumRegs) { - unsigned FirstUnalloc = getFirstUnallocated(Regs, NumRegs); - if (FirstUnalloc == NumRegs) - return 0; // Didn't find the reg. - - // Mark the register and any aliases as allocated. - unsigned Reg = Regs[FirstUnalloc], ShadowReg = ShadowRegs[FirstUnalloc]; - MarkAllocated(Reg); - MarkAllocated(ShadowReg); - return Reg; - } - - /// AllocateStack - Allocate a chunk of stack space with the specified size - /// and alignment. - unsigned AllocateStack(unsigned Size, unsigned Align) { - assert(Align && ((Align-1) & Align) == 0); // Align is power of 2. - StackOffset = ((StackOffset + Align-1) & ~(Align-1)); - unsigned Result = StackOffset; - StackOffset += Size; - return Result; - } - - // HandleByVal - Allocate a stack slot large enough to pass an argument by - // value. The size and alignment information of the argument is encoded in its - // parameter attribute. - void HandleByVal(unsigned ValNo, EVT ValVT, - EVT LocVT, CCValAssign::LocInfo LocInfo, - int MinSize, int MinAlign, ISD::ArgFlagsTy ArgFlags); - -private: - /// MarkAllocated - Mark a register and all of its aliases as allocated. - void MarkAllocated(unsigned Reg); -}; - - - -} // end namespace llvm - -#endif