class MachineFrameInfo;
class MachineConstantPool;
class MachineJumpTableInfo;
+class MachineModuleInfo;
+class MCContext;
+class Pass;
class TargetMachine;
class TargetRegisterClass;
};
class MachineFunction {
- Function *Fn;
+ const Function *Fn;
const TargetMachine &Target;
-
+ MCContext &Ctx;
+ MachineModuleInfo &MMI;
+
// RegInfo - Information about each register in use in the function.
MachineRegisterInfo *RegInfo;
typedef ilist<MachineBasicBlock> BasicBlockListType;
BasicBlockListType BasicBlocks;
- // Default debug location. Used to print out the debug label at the beginning
- // of a function.
- DebugLoc DefaultDebugLoc;
-
- // Tracks debug locations.
- DebugLocTracker DebugLocInfo;
-
- // The alignment of the function.
+ /// FunctionNumber - This provides a unique ID for each function emitted in
+ /// this translation unit.
+ ///
+ unsigned FunctionNumber;
+
+ /// Alignment - The alignment of the function.
unsigned Alignment;
- MachineFunction(const MachineFunction &); // intentionally unimplemented
- void operator=(const MachineFunction&); // intentionally unimplemented
+ /// 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;
+ MachineFunction(const MachineFunction &); // DO NOT IMPLEMENT
+ void operator=(const MachineFunction&); // DO NOT IMPLEMENT
public:
- MachineFunction(Function *Fn, const TargetMachine &TM);
+ MachineFunction(const Function *Fn, const TargetMachine &TM,
+ unsigned FunctionNum, MachineModuleInfo &MMI);
~MachineFunction();
+ MachineModuleInfo &getMMI() const { return MMI; }
+ MCContext &getContext() const { return Ctx; }
+
/// getFunction - Return the LLVM function that this machine code represents
///
- Function *getFunction() const { return Fn; }
+ const Function *getFunction() const { return Fn; }
+ /// 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; }
const MachineFrameInfo *getFrameInfo() const { return FrameInfo; }
/// getJumpTableInfo - Return the jump table info object for the current
- /// function. This object contains information about jump tables for switch
- /// instructions in the current function.
- ///
- MachineJumpTableInfo *getJumpTableInfo() { return JumpTableInfo; }
+ /// function. This object contains information about jump tables in the
+ /// current function. If the current function has no jump tables, this will
+ /// return null.
const MachineJumpTableInfo *getJumpTableInfo() const { return JumpTableInfo; }
+ MachineJumpTableInfo *getJumpTableInfo() { return JumpTableInfo; }
+
+ /// getOrCreateJumpTableInfo - Get the JumpTableInfo for this function, if it
+ /// does already exist, allocate one.
+ MachineJumpTableInfo *getOrCreateJumpTableInfo(unsigned JTEntryKind);
+
/// getConstantPool - Return the constant pool object for the current
/// function.
///
void setAlignment(unsigned A) { Alignment = A; }
+ /// EnsureAlignment - Make sure the function is at least 'A' bits 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;
+ }
+
+ /// setCallsSetJmp - Set a flag that indicates if there's a call to setjmp or
+ /// sigsetjmp.
+ void setCallsSetJmp(bool B) {
+ CallsSetJmp = B;
+ }
+
/// getInfo - Keep track of various per-function pieces of information for
/// backends that would like to do so.
///
AlignOf<Ty>::Alignment));
MFInfo = new (Loc) Ty(*this);
}
-
- assert((void*)dynamic_cast<Ty*>(MFInfo) == (void*)MFInfo &&
- "Invalid concrete type or multiple inheritence for getInfo");
return static_cast<Ty*>(MFInfo);
}
/// verify - Run the current MachineFunction through the machine code
/// verifier, useful for debugger use.
- void verify(Pass *p=NULL, bool allowDoubleDefs=false) const;
+ void verify(Pass *p=NULL) const;
// Provide accessors for the MachineBasicBlock list...
typedef BasicBlockListType::iterator iterator;
bool NoImp = false);
/// CloneMachineInstr - Create a new MachineInstr which is a copy of the
- /// 'Orig' instruction, identical in all ways except the the instruction
+ /// 'Orig' instruction, identical in all ways except the instruction
/// has no parent, prev, or next.
///
/// See also TargetInstrInfo::duplicate() for target-specific fixes to cloned
MachineInstr::mmo_iterator End);
//===--------------------------------------------------------------------===//
- // Debug location.
+ // Label Manipulation.
//
-
- /// getDebugLocTuple - Get the DebugLocTuple for a given DebugLoc object.
- DebugLocTuple getDebugLocTuple(DebugLoc DL) const;
-
- /// getDefaultDebugLoc - Get the default debug location for the machine
- /// function.
- DebugLoc getDefaultDebugLoc() const { return DefaultDebugLoc; }
-
- /// setDefaultDebugLoc - Get the default debug location for the machine
- /// function.
- void setDefaultDebugLoc(DebugLoc DL) { DefaultDebugLoc = DL; }
-
- /// getDebugLocInfo - Get the debug info location tracker.
- DebugLocTracker &getDebugLocInfo() { return DebugLocInfo; }
+
+ /// getJTISymbol - Return the MCSymbol for the specified non-empty jump table.
+ /// If isLinkerPrivate is specified, an 'l' label is returned, otherwise a
+ /// normal 'L' label is returned.
+ MCSymbol *getJTISymbol(unsigned JTI, MCContext &Ctx,
+ bool isLinkerPrivate = false) const;
};
//===--------------------------------------------------------------------===//