本文整理汇总了C++中MipsFunctionInfo::setSaveS2方法的典型用法代码示例。如果您正苦于以下问题：C++ MipsFunctionInfo::setSaveS2方法的具体用法？C++ MipsFunctionInfo::setSaveS2怎么用？C++ MipsFunctionInfo::setSaveS2使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MipsFunctionInfo的用法示例。
在下文中一共展示了MipsFunctionInfo::setSaveS2方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: if
void Mips16TargetLowering::
getOpndList(SmallVectorImpl<SDValue> &Ops,
std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
CallLoweringInfo &CLI, SDValue Callee, SDValue Chain) const {
SelectionDAG &DAG = CLI.DAG;
MachineFunction &MF = DAG.getMachineFunction();
MipsFunctionInfo *FuncInfo = MF.getInfo<MipsFunctionInfo>();
const char* Mips16HelperFunction = 0;
bool NeedMips16Helper = false;
if (Subtarget->inMips16HardFloat()) {
//
// currently we don't have symbols tagged with the mips16 or mips32
// qualifier so we will assume that we don't know what kind it is.
// and generate the helper
//
bool LookupHelper = true;
if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(CLI.Callee)) {
Mips16Libcall Find = { RTLIB::UNKNOWN_LIBCALL, S->getSymbol() };
if (std::binary_search(HardFloatLibCalls, array_endof(HardFloatLibCalls),
Find))
LookupHelper = false;
else {
const char *Symbol = S->getSymbol();
Mips16IntrinsicHelperType IntrinsicFind = { Symbol, "" };
const Mips16HardFloatInfo::FuncSignature *Signature =
Mips16HardFloatInfo::findFuncSignature(Symbol);
if (!IsPICCall && (Signature && (FuncInfo->StubsNeeded.find(Symbol) ==
FuncInfo->StubsNeeded.end()))) {
FuncInfo->StubsNeeded[Symbol] = Signature;
//
// S2 is normally saved if the stub is for a function which
// returns a float or double value and is not otherwise. This is
// because more work is required after the function the stub
// is calling completes, and so the stub cannot directly return
// and the stub has no stack space to store the return address so
// S2 is used for that purpose.
// In order to take advantage of not saving S2, we need to also
// optimize the call in the stub and this requires some further
// functionality in MipsAsmPrinter which we don't have yet.
// So for now we always save S2. The optimization will be done
// in a follow-on patch.
//
if (1 || (Signature->RetSig != Mips16HardFloatInfo::NoFPRet))
FuncInfo->setSaveS2();
}
// one more look at list of intrinsics
if (std::binary_search(Mips16IntrinsicHelper,
array_endof(Mips16IntrinsicHelper),
IntrinsicFind)) {
const Mips16IntrinsicHelperType *h =(std::find(Mips16IntrinsicHelper,
array_endof(Mips16IntrinsicHelper),
IntrinsicFind));
Mips16HelperFunction = h->Helper;
NeedMips16Helper = true;
LookupHelper = false;
}
}
} else if (GlobalAddressSDNode *G =
dyn_cast<GlobalAddressSDNode>(CLI.Callee)) {
Mips16Libcall Find = { RTLIB::UNKNOWN_LIBCALL,
G->getGlobal()->getName().data() };
if (std::binary_search(HardFloatLibCalls, array_endof(HardFloatLibCalls),
Find))
LookupHelper = false;
}
if (LookupHelper) Mips16HelperFunction =
getMips16HelperFunction(CLI.RetTy, CLI.Args, NeedMips16Helper);
}
SDValue JumpTarget = Callee;
// T9 should contain the address of the callee function if
// -reloction-model=pic or it is an indirect call.
if (IsPICCall || !GlobalOrExternal) {
unsigned V0Reg = Mips::V0;
if (NeedMips16Helper) {
RegsToPass.push_front(std::make_pair(V0Reg, Callee));
JumpTarget = DAG.getExternalSymbol(Mips16HelperFunction, getPointerTy());
ExternalSymbolSDNode *S = cast<ExternalSymbolSDNode>(JumpTarget);
JumpTarget = getAddrGlobal(S, JumpTarget.getValueType(), DAG,
MipsII::MO_GOT, Chain,
FuncInfo->callPtrInfo(S->getSymbol()));
} else
RegsToPass.push_front(std::make_pair((unsigned)Mips::T9, Callee));
}
Ops.push_back(JumpTarget);
MipsTargetLowering::getOpndList(Ops, RegsToPass, IsPICCall, GlobalOrExternal,
InternalLinkage, CLI, Callee, Chain);
}