#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/Support/Allocator.h"
+#include "llvm/Support/ArrayRecycler.h"
+#include "llvm/Support/DebugLoc.h"
#include "llvm/Support/Recycler.h"
namespace llvm {
// 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,
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; }
///
void setAlignment(unsigned A) { Alignment = A; }
- /// EnsureAlignment - Make sure the function is at least 'A' bits 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
/// addLiveIn - Add the specified physical register as a live-in value and
/// create a corresponding virtual register for it.
- unsigned addLiveIn(unsigned PReg, const TargetRegisterClass *RC, DebugLoc DL);
+ unsigned addLiveIn(unsigned PReg, const TargetRegisterClass *RC);
//===--------------------------------------------------------------------===//
// BasicBlock accessor functions.
// 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);
/// CreateMachineInstr - Allocate a new MachineInstr. Use this instead
/// of `new MachineInstr'.
///
- MachineInstr *CreateMachineInstr(const TargetInstrDesc &TID,
+ MachineInstr *CreateMachineInstr(const MCInstrDesc &MCID,
DebugLoc DL,
bool NoImp = false);
MachineMemOperand *getMachineMemOperand(MachinePointerInfo PtrInfo,
unsigned f, uint64_t s,
unsigned base_alignment,
- const MDNode *TBAAInfo = 0);
+ const MDNode *TBAAInfo = 0,
+ const MDNode *Ranges = 0);
/// 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);
typedef MachineFunction::iterator nodes_iterator;
static nodes_iterator nodes_begin(MachineFunction *F) { return F->begin(); }
static nodes_iterator nodes_end (MachineFunction *F) { return F->end(); }
+ static unsigned size (MachineFunction *F) { return F->size(); }
};
template <> struct GraphTraits<const MachineFunction*> :
public GraphTraits<const MachineBasicBlock*> {
static nodes_iterator nodes_end (const MachineFunction *F) {
return F->end();
}
+ static unsigned size (const MachineFunction *F) {
+ return F->size();
+ }
};
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