#define LLVM_CODEGEN_CALLINGCONVLOWER_H
#include "llvm/ADT/SmallVector.h"
+#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/Target/TargetCallingConv.h"
#include "llvm/CallingConv.h"
LocInfo HTP : 6;
/// ValVT - The type of the value being assigned.
- EVT ValVT;
+ MVT ValVT;
/// LocVT - The type of the location being assigned to.
- EVT LocVT;
+ MVT LocVT;
public:
- static CCValAssign getReg(unsigned ValNo, EVT ValVT,
- unsigned RegNo, EVT LocVT,
+ static CCValAssign getReg(unsigned ValNo, MVT ValVT,
+ unsigned RegNo, MVT LocVT,
LocInfo HTP) {
CCValAssign Ret;
Ret.ValNo = ValNo;
return Ret;
}
- static CCValAssign getCustomReg(unsigned ValNo, EVT ValVT,
- unsigned RegNo, EVT LocVT,
+ static CCValAssign getCustomReg(unsigned ValNo, MVT ValVT,
+ unsigned RegNo, MVT LocVT,
LocInfo HTP) {
CCValAssign Ret;
Ret = getReg(ValNo, ValVT, RegNo, LocVT, HTP);
return Ret;
}
- static CCValAssign getMem(unsigned ValNo, EVT ValVT,
- unsigned Offset, EVT LocVT,
+ static CCValAssign getMem(unsigned ValNo, MVT ValVT,
+ unsigned Offset, MVT LocVT,
LocInfo HTP) {
CCValAssign Ret;
Ret.ValNo = ValNo;
return Ret;
}
- static CCValAssign getCustomMem(unsigned ValNo, EVT ValVT,
- unsigned Offset, EVT LocVT,
+ static CCValAssign getCustomMem(unsigned ValNo, MVT ValVT,
+ unsigned Offset, MVT LocVT,
LocInfo HTP) {
CCValAssign Ret;
Ret = getMem(ValNo, ValVT, Offset, LocVT, HTP);
}
unsigned getValNo() const { return ValNo; }
- EVT getValVT() const { return ValVT; }
+ MVT getValVT() const { return ValVT; }
bool isRegLoc() const { return !isMem; }
bool isMemLoc() const { return isMem; }
unsigned getLocReg() const { assert(isRegLoc()); return Loc; }
unsigned getLocMemOffset() const { assert(isMemLoc()); return Loc; }
- EVT getLocVT() const { return LocVT; }
+ MVT getLocVT() const { return LocVT; }
LocInfo getLocInfo() const { return HTP; }
bool isExtInLoc() const {
};
/// CCAssignFn - This function assigns a location for Val, updating State to
-/// reflect the change.
-typedef bool CCAssignFn(unsigned ValNo, EVT ValVT,
- EVT LocVT, CCValAssign::LocInfo LocInfo,
+/// reflect the change. It returns 'true' if it failed to handle Val.
+typedef bool CCAssignFn(unsigned ValNo, MVT ValVT,
+ MVT LocVT, CCValAssign::LocInfo LocInfo,
ISD::ArgFlagsTy ArgFlags, CCState &State);
/// CCCustomFn - This function assigns a location for Val, possibly updating
/// all args to reflect changes and indicates if it handled it. It must set
/// isCustom if it handles the arg and returns true.
-typedef bool CCCustomFn(unsigned &ValNo, EVT &ValVT,
- EVT &LocVT, CCValAssign::LocInfo &LocInfo,
+typedef bool CCCustomFn(unsigned &ValNo, MVT &ValVT,
+ MVT &LocVT, CCValAssign::LocInfo &LocInfo,
ISD::ArgFlagsTy &ArgFlags, CCState &State);
+/// ParmContext - This enum tracks whether calling convention lowering is in
+/// the context of prologue or call generation. Not all backends make use of
+/// this information.
+typedef enum { Unknown, Prologue, Call } ParmContext;
+
/// 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 CCState {
+private:
CallingConv::ID CallingConv;
bool IsVarArg;
+ MachineFunction &MF;
const TargetMachine &TM;
const TargetRegisterInfo &TRI;
SmallVector<CCValAssign, 16> &Locs;
unsigned StackOffset;
SmallVector<uint32_t, 16> UsedRegs;
+ unsigned FirstByValReg;
+ bool FirstByValRegValid;
+
+protected:
+ ParmContext CallOrPrologue;
+
public:
- CCState(CallingConv::ID CC, bool isVarArg, const TargetMachine &TM,
- SmallVector<CCValAssign, 16> &locs, LLVMContext &C);
+ CCState(CallingConv::ID CC, bool isVarArg, MachineFunction &MF,
+ const TargetMachine &TM, SmallVector<CCValAssign, 16> &locs,
+ LLVMContext &C);
void addLoc(const CCValAssign &V) {
Locs.push_back(V);
LLVMContext &getContext() const { return Context; }
const TargetMachine &getTarget() const { return TM; }
+ MachineFunction &getMachineFunction() const { return MF; }
CallingConv::ID getCallingConv() const { return CallingConv; }
bool isVarArg() const { return IsVarArg; }
/// CheckReturn - Analyze the return values of a function, returning
/// true if the return can be performed without sret-demotion, and
/// false otherwise.
- bool CheckReturn(const SmallVectorImpl<EVT> &OutTys,
- const SmallVectorImpl<ISD::ArgFlagsTy> &ArgsFlags,
+ bool CheckReturn(const SmallVectorImpl<ISD::OutputArg> &ArgsFlags,
CCAssignFn Fn);
/// AnalyzeCallOperands - Analyze the outgoing arguments to a call,
/// AnalyzeCallOperands - Same as above except it takes vectors of types
/// and argument flags.
- void AnalyzeCallOperands(SmallVectorImpl<EVT> &ArgVTs,
+ void AnalyzeCallOperands(SmallVectorImpl<MVT> &ArgVTs,
SmallVectorImpl<ISD::ArgFlagsTy> &Flags,
CCAssignFn Fn);
/// AnalyzeCallResult - Same as above except it's specialized for calls which
/// produce a single value.
- void AnalyzeCallResult(EVT VT, CCAssignFn Fn);
+ void AnalyzeCallResult(MVT VT, 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 {
+ unsigned getFirstUnallocated(const uint16_t *Regs, unsigned NumRegs) const {
for (unsigned i = 0; i != NumRegs; ++i)
if (!isAllocated(Regs[i]))
return i;
/// 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 AllocateReg(const uint16_t *Regs, unsigned NumRegs) {
unsigned FirstUnalloc = getFirstUnallocated(Regs, NumRegs);
if (FirstUnalloc == NumRegs)
return 0; // Didn't find the reg.
}
/// Version of AllocateReg with list of registers to be shadowed.
- unsigned AllocateReg(const unsigned *Regs, const unsigned *ShadowRegs,
+ unsigned AllocateReg(const uint16_t *Regs, const uint16_t *ShadowRegs,
unsigned NumRegs) {
unsigned FirstUnalloc = getFirstUnallocated(Regs, NumRegs);
if (FirstUnalloc == NumRegs)
return Result;
}
+ /// Version of AllocateStack with extra register to be shadowed.
+ unsigned AllocateStack(unsigned Size, unsigned Align, unsigned ShadowReg) {
+ MarkAllocated(ShadowReg);
+ return AllocateStack(Size, Align);
+ }
+
// 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,
+ void HandleByVal(unsigned ValNo, MVT ValVT,
+ MVT LocVT, CCValAssign::LocInfo LocInfo,
int MinSize, int MinAlign, ISD::ArgFlagsTy ArgFlags);
+ // First GPR that carries part of a byval aggregate that's split
+ // between registers and memory.
+ unsigned getFirstByValReg() const { return FirstByValRegValid ? FirstByValReg : 0; }
+ void setFirstByValReg(unsigned r) { FirstByValReg = r; FirstByValRegValid = true; }
+ void clearFirstByValReg() { FirstByValReg = 0; FirstByValRegValid = false; }
+ bool isFirstByValRegValid() const { return FirstByValRegValid; }
+
+ ParmContext getCallOrPrologue() const { return CallOrPrologue; }
+
private:
/// MarkAllocated - Mark a register and all of its aliases as allocated.
void MarkAllocated(unsigned Reg);
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