#ifndef LLVM_CODEGEN_MACHINEFUNCTION_H
#define LLVM_CODEGEN_MACHINEFUNCTION_H
-#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/ADT/ilist.h"
-#include "llvm/Support/DebugLoc.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
+#include "llvm/IR/DebugLoc.h"
+#include "llvm/IR/Metadata.h"
#include "llvm/Support/Allocator.h"
+#include "llvm/Support/ArrayRecycler.h"
#include "llvm/Support/Recycler.h"
namespace llvm {
class MCContext;
class Pass;
class TargetMachine;
+class TargetSubtargetInfo;
class TargetRegisterClass;
struct MachinePointerInfo;
/// MachineFunction is destroyed.
struct MachineFunctionInfo {
virtual ~MachineFunctionInfo();
+
+ /// \brief Factory function: default behavior is to call new using the
+ /// supplied allocator.
+ ///
+ /// This function can be overridden in a derive class.
+ template<typename Ty>
+ static Ty *create(BumpPtrAllocator &Allocator, MachineFunction &MF) {
+ return new (Allocator.Allocate<Ty>()) Ty(MF);
+ }
};
class MachineFunction {
const Function *Fn;
const TargetMachine &Target;
+ const TargetSubtargetInfo *STI;
MCContext &Ctx;
MachineModuleInfo &MMI;
- GCModuleInfo *GMI;
-
+
// RegInfo - Information about each register in use in the function.
MachineRegisterInfo *RegInfo;
// Allocation management for instructions in function.
Recycler<MachineInstr> InstructionRecycler;
+ // Allocation management for operand arrays on instructions.
+ ArrayRecycler<MachineOperand> OperandRecycler;
+
// Allocation management for basic blocks in function.
Recycler<MachineBasicBlock> BasicBlockRecycler;
/// Alignment - The alignment of the function.
unsigned Alignment;
- /// CallsSetJmp - True if the function calls setjmp or sigsetjmp. This is used
- /// to limit optimizations which cannot reason about the control flow of
- /// setjmp.
- bool CallsSetJmp;
+ /// ExposesReturnsTwice - True if the function calls setjmp or related
+ /// functions with attribute "returns twice", but doesn't have
+ /// the attribute itself.
+ /// This is used to limit optimizations which cannot reason
+ /// about the control flow of such functions.
+ bool ExposesReturnsTwice;
+
+ /// True if the function includes any inline assembly.
+ bool HasInlineAsm;
- MachineFunction(const MachineFunction &); // DO NOT IMPLEMENT
- void operator=(const MachineFunction&); // DO NOT IMPLEMENT
+ MachineFunction(const MachineFunction &) LLVM_DELETED_FUNCTION;
+ void operator=(const MachineFunction&) LLVM_DELETED_FUNCTION;
public:
MachineFunction(const Function *Fn, const TargetMachine &TM,
- unsigned FunctionNum, MachineModuleInfo &MMI,
- GCModuleInfo* GMI);
+ unsigned FunctionNum, MachineModuleInfo &MMI);
~MachineFunction();
MachineModuleInfo &getMMI() const { return MMI; }
- GCModuleInfo *getGMI() const { return GMI; }
MCContext &getContext() const { return Ctx; }
-
+
/// getFunction - Return the LLVM function that this machine code represents
///
const Function *getFunction() const { return Fn; }
+ /// getName - Return the name of the corresponding LLVM function.
+ ///
+ StringRef getName() const;
+
/// getFunctionNumber - Return a unique ID for the current function.
///
unsigned getFunctionNumber() const { return FunctionNumber; }
-
+
/// getTarget - Return the target machine this machine code is compiled with
///
const TargetMachine &getTarget() const { return Target; }
+ /// getSubtarget - Return the subtarget for which this machine code is being
+ /// compiled.
+ const TargetSubtargetInfo &getSubtarget() const { return *STI; }
+ void setSubtarget(const TargetSubtargetInfo *ST) { STI = ST; }
+
/// getRegInfo - Return information about the registers currently in use.
///
MachineRegisterInfo &getRegInfo() { return *RegInfo; }
///
void setAlignment(unsigned A) { Alignment = A; }
- /// EnsureAlignment - Make sure the function is at least 1 << A bytes aligned.
- void EnsureAlignment(unsigned A) {
+ /// ensureAlignment - Make sure the function is at least 1 << A bytes aligned.
+ void ensureAlignment(unsigned A) {
if (Alignment < A) Alignment = A;
}
- /// callsSetJmp - Returns true if the function calls setjmp or sigsetjmp.
- bool callsSetJmp() const {
- return CallsSetJmp;
+ /// exposesReturnsTwice - Returns true if the function calls setjmp or
+ /// any other similar functions with attribute "returns twice" without
+ /// having the attribute itself.
+ bool exposesReturnsTwice() const {
+ return ExposesReturnsTwice;
}
- /// setCallsSetJmp - Set a flag that indicates if there's a call to setjmp or
- /// sigsetjmp.
- void setCallsSetJmp(bool B) {
- CallsSetJmp = B;
+ /// setCallsSetJmp - Set a flag that indicates if there's a call to
+ /// a "returns twice" function.
+ void setExposesReturnsTwice(bool B) {
+ ExposesReturnsTwice = B;
}
-
+
+ /// Returns true if the function contains any inline assembly.
+ bool hasInlineAsm() const {
+ return HasInlineAsm;
+ }
+
+ /// Set a flag that indicates that the function contains inline assembly.
+ void setHasInlineAsm(bool B) {
+ HasInlineAsm = B;
+ }
+
/// getInfo - Keep track of various per-function pieces of information for
/// backends that would like to do so.
///
template<typename Ty>
Ty *getInfo() {
- if (!MFInfo) {
- // This should be just `new (Allocator.Allocate<Ty>()) Ty(*this)', but
- // that apparently breaks GCC 3.3.
- Ty *Loc = static_cast<Ty*>(Allocator.Allocate(sizeof(Ty),
- AlignOf<Ty>::Alignment));
- MFInfo = new (Loc) Ty(*this);
- }
+ if (!MFInfo)
+ MFInfo = Ty::template create<Ty>(Allocator, *this);
return static_cast<Ty*>(MFInfo);
}
return MBBNumbering[N];
}
+ /// Should we be emitting segmented stack stuff for the function
+ bool shouldSplitStack();
+
/// getNumBlockIDs - Return the number of MBB ID's allocated.
///
unsigned getNumBlockIDs() const { return (unsigned)MBBNumbering.size(); }
/// dense, and match the ordering of the blocks within the function. If a
/// specific MachineBasicBlock is specified, only that block and those after
/// it are renumbered.
- void RenumberBlocks(MachineBasicBlock *MBBFrom = 0);
+ void RenumberBlocks(MachineBasicBlock *MBBFrom = nullptr);
/// print - Print out the MachineFunction in a format suitable for debugging
/// to the specified stream.
///
- void print(raw_ostream &OS, SlotIndexes* = 0) const;
+ void print(raw_ostream &OS, SlotIndexes* = nullptr) const;
/// viewCFG - This function is meant for use from the debugger. You can just
/// say 'call F->viewCFG()' and a ghostview window should pop up from the
/// verify - Run the current MachineFunction through the machine code
/// verifier, useful for debugger use.
- void verify(Pass *p = NULL, const char *Banner = NULL) const;
+ void verify(Pass *p = nullptr, const char *Banner = nullptr) const;
// Provide accessors for the MachineBasicBlock list...
typedef BasicBlockListType::iterator iterator;
// Internal functions used to automatically number MachineBasicBlocks
//
- /// getNextMBBNumber - Returns the next unique number to be assigned
- /// to a MachineBasicBlock in this MachineFunction.
+ /// \brief Adds the MBB to the internal numbering. Returns the unique number
+ /// assigned to the MBB.
///
unsigned addToMBBNumbering(MachineBasicBlock *MBB) {
MBBNumbering.push_back(MBB);
/// implementation.
void removeFromMBBNumbering(unsigned N) {
assert(N < MBBNumbering.size() && "Illegal basic block #");
- MBBNumbering[N] = 0;
+ MBBNumbering[N] = nullptr;
}
/// CreateMachineInstr - Allocate a new MachineInstr. Use this instead
/// CreateMachineBasicBlock - Allocate a new MachineBasicBlock. Use this
/// instead of `new MachineBasicBlock'.
///
- MachineBasicBlock *CreateMachineBasicBlock(const BasicBlock *bb = 0);
+ MachineBasicBlock *CreateMachineBasicBlock(const BasicBlock *bb = nullptr);
/// DeleteMachineBasicBlock - Delete the given MachineBasicBlock.
///
MachineMemOperand *getMachineMemOperand(MachinePointerInfo PtrInfo,
unsigned f, uint64_t s,
unsigned base_alignment,
- const MDNode *TBAAInfo = 0);
+ const AAMDNodes &AAInfo = AAMDNodes(),
+ const MDNode *Ranges = nullptr);
/// getMachineMemOperand - Allocate a new MachineMemOperand by copying
/// an existing one, adjusting by an offset and using the given size.
MachineMemOperand *getMachineMemOperand(const MachineMemOperand *MMO,
int64_t Offset, uint64_t Size);
+ typedef ArrayRecycler<MachineOperand>::Capacity OperandCapacity;
+
+ /// Allocate an array of MachineOperands. This is only intended for use by
+ /// internal MachineInstr functions.
+ MachineOperand *allocateOperandArray(OperandCapacity Cap) {
+ return OperandRecycler.allocate(Cap, Allocator);
+ }
+
+ /// Dellocate an array of MachineOperands and recycle the memory. This is
+ /// only intended for use by internal MachineInstr functions.
+ /// Cap must be the same capacity that was used to allocate the array.
+ void deallocateOperandArray(OperandCapacity Cap, MachineOperand *Array) {
+ OperandRecycler.deallocate(Cap, Array);
+ }
+
+ /// \brief Allocate and initialize a register mask with @p NumRegister bits.
+ uint32_t *allocateRegisterMask(unsigned NumRegister) {
+ unsigned Size = (NumRegister + 31) / 32;
+ uint32_t *Mask = Allocator.Allocate<uint32_t>(Size);
+ for (unsigned i = 0; i != Size; ++i)
+ Mask[i] = 0;
+ return Mask;
+ }
+
/// allocateMemRefsArray - Allocate an array to hold MachineMemOperand
/// pointers. This array is owned by the MachineFunction.
MachineInstr::mmo_iterator allocateMemRefsArray(unsigned long Num);
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