#include "llvm/ADT/ilist.h"
#include "llvm/ADT/ilist_node.h"
#include "llvm/ADT/STLExtras.h"
+#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/Target/TargetInstrDesc.h"
#include "llvm/Support/DebugLoc.h"
unsigned short NumImplicitOps; // Number of implicit operands (which
// are determined at construction time).
+ unsigned short AsmPrinterFlags; // Various bits of information used by
+ // the AsmPrinter to emit helpful
+ // comments. This is *not* semantic
+ // information. Do not use this for
+ // anything other than to convey comment
+ // information to AsmPrinter.
+
std::vector<MachineOperand> Operands; // the operands
mmo_iterator MemRefs; // information on memory references
mmo_iterator MemRefsEnd;
const MachineBasicBlock* getParent() const { return Parent; }
MachineBasicBlock* getParent() { return Parent; }
+ /// getAsmPrinterFlags - Return the asm printer flags bitvector.
+ ///
+ unsigned short getAsmPrinterFlags() const { return AsmPrinterFlags; }
+
+ /// getAsmPrinterFlag - Return whether an AsmPrinter flag is set.
+ ///
+ bool getAsmPrinterFlag(AsmPrinter::CommentFlag Flag) const {
+ return AsmPrinterFlags & Flag;
+ }
+
+ /// setAsmPrinterFlag - Set a flag for the AsmPrinter.
+ ///
+ void setAsmPrinterFlag(unsigned short Flag) {
+ AsmPrinterFlags |= Flag;
+ }
+
/// getDebugLoc - Returns the debug location id of this MachineInstr.
///
DebugLoc getDebugLoc() const { return debugLoc; }
bool addRegisterKilled(unsigned IncomingReg,
const TargetRegisterInfo *RegInfo,
bool AddIfNotFound = false);
-
+
/// addRegisterDead - We have determined MI defined a register without a use.
/// Look for the operand that defines it and mark it as IsDead. If
/// AddIfNotFound is true, add a implicit operand if it's not found. Returns
bool addRegisterDead(unsigned IncomingReg, const TargetRegisterInfo *RegInfo,
bool AddIfNotFound = false);
+ /// addRegisterDefined - We have determined MI defines a register. Make sure
+ /// there is an operand defining Reg.
+ void addRegisterDefined(unsigned IncomingReg,
+ const TargetRegisterInfo *RegInfo);
+
/// isSafeToMove - Return true if it is safe to move this instruction. If
/// SawStore is set to true, it means that there is a store (or call) between
/// the instruction's location and its intended destination.
- bool isSafeToMove(const TargetInstrInfo *TII, bool &SawStore) const;
+ bool isSafeToMove(const TargetInstrInfo *TII, bool &SawStore,
+ AliasAnalysis *AA) const;
/// isSafeToReMat - Return true if it's safe to rematerialize the specified
/// instruction which defined the specified register instead of copying it.
- bool isSafeToReMat(const TargetInstrInfo *TII, unsigned DstReg) const;
+ bool isSafeToReMat(const TargetInstrInfo *TII, unsigned DstReg,
+ AliasAnalysis *AA) const;
/// hasVolatileMemoryRef - Return true if this instruction may have a
/// volatile memory reference, or if the information describing the
/// loading a value from the constant pool or from from the argument area of
/// a function if it does not change. This should only return true of *all*
/// loads the instruction does are invariant (if it does multiple loads).
- bool isInvariantLoad(AliasAnalysis *AA = 0) const;
+ bool isInvariantLoad(AliasAnalysis *AA) const;
+
+ /// isConstantValuePHI - If the specified instruction is a PHI that always
+ /// merges together the same virtual register, return the register, otherwise
+ /// return 0.
+ unsigned isConstantValuePHI() const;
//
// Debugging support