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-rw-r--r--llvm/lib/Target/X86/X86ISelLowering.cpp215
1 files changed, 0 insertions, 215 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 6ce9ab711bb..ea4da9d7332 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -6593,221 +6593,6 @@ X86TargetLowering::LowerDYNAMIC_STACKALLOC(SDValue Op,
return DAG.getMergeValues(Ops1, 2, dl);
}
-SDValue
-X86TargetLowering::EmitTargetCodeForMemset(SelectionDAG &DAG, DebugLoc dl,
- SDValue Chain,
- SDValue Dst, SDValue Src,
- SDValue Size, unsigned Align,
- bool isVolatile,
- const Value *DstSV,
- uint64_t DstSVOff) const {
- ConstantSDNode *ConstantSize = dyn_cast<ConstantSDNode>(Size);
-
- // If not DWORD aligned or size is more than the threshold, call the library.
- // The libc version is likely to be faster for these cases. It can use the
- // address value and run time information about the CPU.
- if ((Align & 3) != 0 ||
- !ConstantSize ||
- ConstantSize->getZExtValue() >
- getSubtarget()->getMaxInlineSizeThreshold()) {
- SDValue InFlag(0, 0);
-
- // Check to see if there is a specialized entry-point for memory zeroing.
- ConstantSDNode *V = dyn_cast<ConstantSDNode>(Src);
-
- if (const char *bzeroEntry = V &&
- V->isNullValue() ? Subtarget->getBZeroEntry() : 0) {
- EVT IntPtr = getPointerTy();
- const Type *IntPtrTy = TD->getIntPtrType(*DAG.getContext());
- TargetLowering::ArgListTy Args;
- TargetLowering::ArgListEntry Entry;
- Entry.Node = Dst;
- Entry.Ty = IntPtrTy;
- Args.push_back(Entry);
- Entry.Node = Size;
- Args.push_back(Entry);
- std::pair<SDValue,SDValue> CallResult =
- LowerCallTo(Chain, Type::getVoidTy(*DAG.getContext()),
- false, false, false, false,
- 0, CallingConv::C, false, /*isReturnValueUsed=*/false,
- DAG.getExternalSymbol(bzeroEntry, IntPtr), Args, DAG, dl);
- return CallResult.second;
- }
-
- // Otherwise have the target-independent code call memset.
- return SDValue();
- }
-
- uint64_t SizeVal = ConstantSize->getZExtValue();
- SDValue InFlag(0, 0);
- EVT AVT;
- SDValue Count;
- ConstantSDNode *ValC = dyn_cast<ConstantSDNode>(Src);
- unsigned BytesLeft = 0;
- bool TwoRepStos = false;
- if (ValC) {
- unsigned ValReg;
- uint64_t Val = ValC->getZExtValue() & 255;
-
- // If the value is a constant, then we can potentially use larger sets.
- switch (Align & 3) {
- case 2: // WORD aligned
- AVT = MVT::i16;
- ValReg = X86::AX;
- Val = (Val << 8) | Val;
- break;
- case 0: // DWORD aligned
- AVT = MVT::i32;
- ValReg = X86::EAX;
- Val = (Val << 8) | Val;
- Val = (Val << 16) | Val;
- if (Subtarget->is64Bit() && ((Align & 0x7) == 0)) { // QWORD aligned
- AVT = MVT::i64;
- ValReg = X86::RAX;
- Val = (Val << 32) | Val;
- }
- break;
- default: // Byte aligned
- AVT = MVT::i8;
- ValReg = X86::AL;
- Count = DAG.getIntPtrConstant(SizeVal);
- break;
- }
-
- if (AVT.bitsGT(MVT::i8)) {
- unsigned UBytes = AVT.getSizeInBits() / 8;
- Count = DAG.getIntPtrConstant(SizeVal / UBytes);
- BytesLeft = SizeVal % UBytes;
- }
-
- Chain = DAG.getCopyToReg(Chain, dl, ValReg, DAG.getConstant(Val, AVT),
- InFlag);
- InFlag = Chain.getValue(1);
- } else {
- AVT = MVT::i8;
- Count = DAG.getIntPtrConstant(SizeVal);
- Chain = DAG.getCopyToReg(Chain, dl, X86::AL, Src, InFlag);
- InFlag = Chain.getValue(1);
- }
-
- Chain = DAG.getCopyToReg(Chain, dl, Subtarget->is64Bit() ? X86::RCX :
- X86::ECX,
- Count, InFlag);
- InFlag = Chain.getValue(1);
- Chain = DAG.getCopyToReg(Chain, dl, Subtarget->is64Bit() ? X86::RDI :
- X86::EDI,
- Dst, InFlag);
- InFlag = Chain.getValue(1);
-
- SDVTList Tys = DAG.getVTList(MVT::Other, MVT::Flag);
- SDValue Ops[] = { Chain, DAG.getValueType(AVT), InFlag };
- Chain = DAG.getNode(X86ISD::REP_STOS, dl, Tys, Ops, array_lengthof(Ops));
-
- if (TwoRepStos) {
- InFlag = Chain.getValue(1);
- Count = Size;
- EVT CVT = Count.getValueType();
- SDValue Left = DAG.getNode(ISD::AND, dl, CVT, Count,
- DAG.getConstant((AVT == MVT::i64) ? 7 : 3, CVT));
- Chain = DAG.getCopyToReg(Chain, dl, (CVT == MVT::i64) ? X86::RCX :
- X86::ECX,
- Left, InFlag);
- InFlag = Chain.getValue(1);
- Tys = DAG.getVTList(MVT::Other, MVT::Flag);
- SDValue Ops[] = { Chain, DAG.getValueType(MVT::i8), InFlag };
- Chain = DAG.getNode(X86ISD::REP_STOS, dl, Tys, Ops, array_lengthof(Ops));
- } else if (BytesLeft) {
- // Handle the last 1 - 7 bytes.
- unsigned Offset = SizeVal - BytesLeft;
- EVT AddrVT = Dst.getValueType();
- EVT SizeVT = Size.getValueType();
-
- Chain = DAG.getMemset(Chain, dl,
- DAG.getNode(ISD::ADD, dl, AddrVT, Dst,
- DAG.getConstant(Offset, AddrVT)),
- Src,
- DAG.getConstant(BytesLeft, SizeVT),
- Align, isVolatile, DstSV, DstSVOff + Offset);
- }
-
- // TODO: Use a Tokenfactor, as in memcpy, instead of a single chain.
- return Chain;
-}
-
-SDValue
-X86TargetLowering::EmitTargetCodeForMemcpy(SelectionDAG &DAG, DebugLoc dl,
- SDValue Chain, SDValue Dst, SDValue Src,
- SDValue Size, unsigned Align,
- bool isVolatile, bool AlwaysInline,
- const Value *DstSV,
- uint64_t DstSVOff,
- const Value *SrcSV,
- uint64_t SrcSVOff) const {
- // This requires the copy size to be a constant, preferrably
- // within a subtarget-specific limit.
- ConstantSDNode *ConstantSize = dyn_cast<ConstantSDNode>(Size);
- if (!ConstantSize)
- return SDValue();
- uint64_t SizeVal = ConstantSize->getZExtValue();
- if (!AlwaysInline && SizeVal > getSubtarget()->getMaxInlineSizeThreshold())
- return SDValue();
-
- /// If not DWORD aligned, call the library.
- if ((Align & 3) != 0)
- return SDValue();
-
- // DWORD aligned
- EVT AVT = MVT::i32;
- if (Subtarget->is64Bit() && ((Align & 0x7) == 0)) // QWORD aligned
- AVT = MVT::i64;
-
- unsigned UBytes = AVT.getSizeInBits() / 8;
- unsigned CountVal = SizeVal / UBytes;
- SDValue Count = DAG.getIntPtrConstant(CountVal);
- unsigned BytesLeft = SizeVal % UBytes;
-
- SDValue InFlag(0, 0);
- Chain = DAG.getCopyToReg(Chain, dl, Subtarget->is64Bit() ? X86::RCX :
- X86::ECX,
- Count, InFlag);
- InFlag = Chain.getValue(1);
- Chain = DAG.getCopyToReg(Chain, dl, Subtarget->is64Bit() ? X86::RDI :
- X86::EDI,
- Dst, InFlag);
- InFlag = Chain.getValue(1);
- Chain = DAG.getCopyToReg(Chain, dl, Subtarget->is64Bit() ? X86::RSI :
- X86::ESI,
- Src, InFlag);
- InFlag = Chain.getValue(1);
-
- SDVTList Tys = DAG.getVTList(MVT::Other, MVT::Flag);
- SDValue Ops[] = { Chain, DAG.getValueType(AVT), InFlag };
- SDValue RepMovs = DAG.getNode(X86ISD::REP_MOVS, dl, Tys, Ops,
- array_lengthof(Ops));
-
- SmallVector<SDValue, 4> Results;
- Results.push_back(RepMovs);
- if (BytesLeft) {
- // Handle the last 1 - 7 bytes.
- unsigned Offset = SizeVal - BytesLeft;
- EVT DstVT = Dst.getValueType();
- EVT SrcVT = Src.getValueType();
- EVT SizeVT = Size.getValueType();
- Results.push_back(DAG.getMemcpy(Chain, dl,
- DAG.getNode(ISD::ADD, dl, DstVT, Dst,
- DAG.getConstant(Offset, DstVT)),
- DAG.getNode(ISD::ADD, dl, SrcVT, Src,
- DAG.getConstant(Offset, SrcVT)),
- DAG.getConstant(BytesLeft, SizeVT),
- Align, isVolatile, AlwaysInline,
- DstSV, DstSVOff + Offset,
- SrcSV, SrcSVOff + Offset));
- }
-
- return DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
- &Results[0], Results.size());
-}
-
SDValue X86TargetLowering::LowerVASTART(SDValue Op, SelectionDAG &DAG) const {
MachineFunction &MF = DAG.getMachineFunction();
X86MachineFunctionInfo *FuncInfo = MF.getInfo<X86MachineFunctionInfo>();
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