/// CallRequiresGOTInRegister - Check whether the call requires the GOT pointer
/// in a register before calling.
-bool X86TargetLowering::CallRequiresGOTPtrInReg(bool Is64Bit, bool IsTailCall) {
- return !IsTailCall && !Is64Bit &&
- getTargetMachine().getRelocationModel() == Reloc::PIC_ &&
- Subtarget->isPICStyleGOT();
+static bool CallRequiresGOTPtrInReg(const TargetMachine &TM,
+ bool IsTailCall) {
+ const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
+
+ return !IsTailCall && !Subtarget.is64Bit() &&
+ TM.getRelocationModel() == Reloc::PIC_ &&
+ Subtarget.isPICStyleGOT();
}
/// CallRequiresFnAddressInReg - Check whether the call requires the function
/// address to be loaded in a register.
-bool
-X86TargetLowering::CallRequiresFnAddressInReg(bool Is64Bit, bool IsTailCall) {
- return !Is64Bit && IsTailCall &&
- getTargetMachine().getRelocationModel() == Reloc::PIC_ &&
- Subtarget->isPICStyleGOT();
+static bool CallRequiresFnAddressInReg(const TargetMachine &TM,
+ bool IsTailCall) {
+ const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
+ return !Subtarget.is64Bit() && IsTailCall &&
+ TM.getRelocationModel() == Reloc::PIC_ &&
+ Subtarget.isPICStyleGOT();
}
/// CreateCopyOfByValArgument - Make a copy of an aggregate at address specified
// ELF / PIC requires GOT in the EBX register before function calls via PLT
// GOT pointer.
- if (CallRequiresGOTPtrInReg(Is64Bit, IsTailCall)) {
+ if (CallRequiresGOTPtrInReg(getTargetMachine(), IsTailCall)) {
Chain = DAG.getCopyToReg(Chain, dl, X86::EBX,
DAG.getNode(X86ISD::GlobalBaseReg,
DebugLoc::getUnknownLoc(),
InFlag);
InFlag = Chain.getValue(1);
}
+
// If we are tail calling and generating PIC/GOT style code load the address
// of the callee into ecx. The value in ecx is used as target of the tail
// jump. This is done to circumvent the ebx/callee-saved problem for tail
// calls on PIC/GOT architectures. Normally we would just put the address of
- // GOT into ebx and then call target@PLT. But for tail callss ebx would be
+ // GOT into ebx and then call target@PLT. But for tail calls ebx would be
// restored (since ebx is callee saved) before jumping to the target@PLT.
- if (CallRequiresFnAddressInReg(Is64Bit, IsTailCall)) {
+ if (CallRequiresFnAddressInReg(getTargetMachine(), IsTailCall)) {
// Note: The actual moving to ecx is done further down.
GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee);
if (G && !G->getGlobal()->hasHiddenVisibility() &&
// Call lowering helpers.
bool IsCalleePop(bool isVarArg, unsigned CallingConv);
- bool CallRequiresGOTPtrInReg(bool Is64Bit, bool IsTailCall);
- bool CallRequiresFnAddressInReg(bool Is64Bit, bool IsTailCall);
SDValue EmitTailCallLoadRetAddr(SelectionDAG &DAG, SDValue &OutRetAddr,
SDValue Chain, bool IsTailCall, bool Is64Bit,
int FPDiff, DebugLoc dl);