#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/StackMaps.h"
-#include "llvm/DebugInfo.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalVariable.h"
unsigned TheReg = Regs[Reg++];
Ops.push_back(DAG.getRegister(TheReg, RegisterVT));
- // Notice if we clobbered the stack pointer. Yes, inline asm can do this.
if (TheReg == SP && Code == InlineAsm::Kind_Clobber) {
- MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
- MFI->setHasInlineAsmWithSPAdjust(true);
+ // If we clobbered the stack pointer, MFI should know about it.
+ assert(DAG.getMachineFunction().getFrameInfo()->
+ hasInlineAsmWithSPAdjust());
}
}
}
AA = &aa;
GFI = gfi;
LibInfo = li;
- TD = DAG.getTarget().getDataLayout();
+ DL = DAG.getTarget().getDataLayout();
Context = DAG.getContext();
LPadToCallSiteMap.clear();
}
if (Cases.size() >= 2)
// Must recompute end() each iteration because it may be
// invalidated by erase if we hold on to it
- for (CaseItr I = Cases.begin(), J = llvm::next(Cases.begin());
+ for (CaseItr I = Cases.begin(), J = std::next(Cases.begin());
J != Cases.end(); ) {
const APInt& nextValue = cast<ConstantInt>(J->Low)->getValue();
const APInt& currentValue = cast<ConstantInt>(I->High)->getValue();
if (DestVT != N.getValueType())
setValue(&I, DAG.getNode(ISD::BITCAST, getCurSDLoc(),
DestVT, N)); // convert types.
- else if(ConstantSDNode *C = dyn_cast<ConstantSDNode>(N))
- setValue(&I, DAG.getConstant(C->getAPIntValue(), C->getValueType(0),
- /*isTarget=*/false, /*isOpaque*/true));
+ // Check if the original LLVM IR Operand was a ConstantInt, because getValue()
+ // might fold any kind of constant expression to an integer constant and that
+ // is not what we are looking for. Only regcognize a bitcast of a genuine
+ // constant integer as an opaque constant.
+ else if(ConstantInt *C = dyn_cast<ConstantInt>(I.getOperand(0)))
+ setValue(&I, DAG.getConstant(C->getValue(), DestVT, /*isTarget=*/false,
+ /*isOpaque*/true));
else
setValue(&I, N); // noop cast.
}
unsigned Field = cast<Constant>(Idx)->getUniqueInteger().getZExtValue();
if (Field) {
// N = N + Offset
- uint64_t Offset = TD->getStructLayout(StTy)->getElementOffset(Field);
+ uint64_t Offset = DL->getStructLayout(StTy)->getElementOffset(Field);
N = DAG.getNode(ISD::ADD, getCurSDLoc(), N.getValueType(), N,
DAG.getConstant(Offset, N.getValueType()));
}
if (const ConstantInt *CI = dyn_cast<ConstantInt>(Idx)) {
if (CI->isZero()) continue;
uint64_t Offs =
- TD->getTypeAllocSize(Ty)*cast<ConstantInt>(CI)->getSExtValue();
+ DL->getTypeAllocSize(Ty)*cast<ConstantInt>(CI)->getSExtValue();
SDValue OffsVal;
EVT PTy = TLI->getPointerTy(AS);
unsigned PtrBits = PTy.getSizeInBits();
// N = N + Idx * ElementSize;
APInt ElementSize = APInt(TLI->getPointerSizeInBits(AS),
- TD->getTypeAllocSize(Ty));
+ DL->getTypeAllocSize(Ty));
SDValue IdxN = getValue(Idx);
// If the index is smaller or larger than intptr_t, truncate or extend
setValue(&I, DSA);
DAG.setRoot(DSA.getValue(1));
- // Inform the Frame Information that we have just allocated a variable-sized
- // object.
- FuncInfo.MF->getFrameInfo()->CreateVariableSizedObject(Align ? Align : 1, &I);
+ assert(FuncInfo.MF->getFrameInfo()->hasVarSizedObjects());
}
void SelectionDAGBuilder::visitLoad(const LoadInst &I) {
return 0;
SmallVector<Value *, 4> Allocas;
- GetUnderlyingObjects(I.getArgOperand(1), Allocas, TD);
+ GetUnderlyingObjects(I.getArgOperand(1), Allocas, DL);
for (SmallVectorImpl<Value*>::iterator Object = Allocas.begin(),
E = Allocas.end(); Object != E; ++Object) {
if (const Constant *LoadCst =
ConstantFoldLoadFromConstPtr(const_cast<Constant *>(LoadInput),
- Builder.TD))
+ Builder.DL))
return Builder.getValue(LoadCst);
}
/// MVT::Other.
EVT getCallOperandValEVT(LLVMContext &Context,
const TargetLowering &TLI,
- const DataLayout *TD) const {
+ const DataLayout *DL) const {
if (CallOperandVal == 0) return MVT::Other;
if (isa<BasicBlock>(CallOperandVal))
// If OpTy is not a single value, it may be a struct/union that we
// can tile with integers.
if (!OpTy->isSingleValueType() && OpTy->isSized()) {
- unsigned BitSize = TD->getTypeSizeInBits(OpTy);
+ unsigned BitSize = DL->getTypeSizeInBits(OpTy);
switch (BitSize) {
default: break;
case 1:
OpInfo.CallOperand = getValue(OpInfo.CallOperandVal);
}
- OpVT = OpInfo.getCallOperandValEVT(*DAG.getContext(), *TLI, TD).
+ OpVT = OpInfo.getCallOperandValEVT(*DAG.getContext(), *TLI, DL).
getSimpleVT();
}
void SelectionDAGBuilder::visitVAArg(const VAArgInst &I) {
const TargetLowering *TLI = TM.getTargetLowering();
- const DataLayout &TD = *TLI->getDataLayout();
+ const DataLayout &DL = *TLI->getDataLayout();
SDValue V = DAG.getVAArg(TLI->getValueType(I.getType()), getCurSDLoc(),
getRoot(), getValue(I.getOperand(0)),
DAG.getSrcValue(I.getOperand(0)),
- TD.getABITypeAlignment(I.getType()));
+ DL.getABITypeAlignment(I.getType()));
setValue(&I, V);
DAG.setRoot(V.getValue(1));
}
assert(CI.getType()->isVoidTy() && "Stackmap cannot return a value.");
- SDValue Callee = getValue(CI.getCalledValue());
+ SDValue Chain, InFlag, Callee, NullPtr;
+ SmallVector<SDValue, 32> Ops;
- // Lower into a call sequence with no args and no return value.
- std::pair<SDValue, SDValue> Result = LowerCallOperands(CI, 0, 0, Callee);
- // Set the root to the target-lowered call chain.
- SDValue Chain = Result.second;
- DAG.setRoot(Chain);
+ SDLoc DL = getCurSDLoc();
+ Callee = getValue(CI.getCalledValue());
+ NullPtr = DAG.getIntPtrConstant(0, true);
- /// Get a call instruction from the call sequence chain.
- /// Tail calls are not allowed.
- SDNode *CallEnd = Chain.getNode();
- assert(CallEnd->getOpcode() == ISD::CALLSEQ_END &&
- "Expected a callseq node.");
- SDNode *Call = CallEnd->getOperand(0).getNode();
- bool hasGlue = Call->getGluedNode();
+ // The stackmap intrinsic only records the live variables (the arguemnts
+ // passed to it) and emits NOPS (if requested). Unlike the patchpoint
+ // intrinsic, this won't be lowered to a function call. This means we don't
+ // have to worry about calling conventions and target specific lowering code.
+ // Instead we perform the call lowering right here.
+ //
+ // chain, flag = CALLSEQ_START(chain, 0)
+ // chain, flag = STACKMAP(id, nbytes, ..., chain, flag)
+ // chain, flag = CALLSEQ_END(chain, 0, 0, flag)
+ //
+ Chain = DAG.getCALLSEQ_START(getRoot(), NullPtr, DL);
+ InFlag = Chain.getValue(1);
- // Replace the target specific call node with the stackmap intrinsic.
- SmallVector<SDValue, 8> Ops;
+ // Add the <id> and <numBytes> constants.
+ SDValue IDVal = getValue(CI.getOperand(PatchPointOpers::IDPos));
+ Ops.push_back(DAG.getTargetConstant(
+ cast<ConstantSDNode>(IDVal)->getZExtValue(), MVT::i64));
+ SDValue NBytesVal = getValue(CI.getOperand(PatchPointOpers::NBytesPos));
+ Ops.push_back(DAG.getTargetConstant(
+ cast<ConstantSDNode>(NBytesVal)->getZExtValue(), MVT::i32));
- // Add the <id> and <numShadowBytes> constants.
- for (unsigned i = 0; i < 2; ++i) {
- SDValue tmp = getValue(CI.getOperand(i));
- Ops.push_back(DAG.getTargetConstant(
- cast<ConstantSDNode>(tmp)->getZExtValue(), MVT::i32));
- }
// Push live variables for the stack map.
addStackMapLiveVars(CI, 2, Ops, *this);
- // Push the chain (this is originally the first operand of the call, but
- // becomes now the last or second to last operand).
- Ops.push_back(*(Call->op_begin()));
+ // We are not pushing any register mask info here on the operands list,
+ // because the stackmap doesn't clobber anything.
- // Push the glue flag (last operand).
- if (hasGlue)
- Ops.push_back(*(Call->op_end()-1));
+ // Push the chain and the glue flag.
+ Ops.push_back(Chain);
+ Ops.push_back(InFlag);
+ // Create the STACKMAP node.
SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
+ SDNode *SM = DAG.getMachineNode(TargetOpcode::STACKMAP, DL, NodeTys, Ops);
+ Chain = SDValue(SM, 0);
+ InFlag = Chain.getValue(1);
- // Replace the target specific call node with a STACKMAP node.
- MachineSDNode *MN = DAG.getMachineNode(TargetOpcode::STACKMAP, getCurSDLoc(),
- NodeTys, Ops);
+ Chain = DAG.getCALLSEQ_END(Chain, NullPtr, NullPtr, InFlag, DL);
- // StackMap generates no value, so nothing goes in the NodeMap.
-
- // Fixup the consumers of the intrinsic. The chain and glue may be used in the
- // call sequence.
- DAG.ReplaceAllUsesWith(Call, MN);
+ // Stackmaps don't generate values, so nothing goes into the NodeMap.
- DAG.DeleteNode(Call);
+ // Set the root to the target-lowered call chain.
+ DAG.setRoot(Chain);
// Inform the Frame Information that we have a stackmap in this function.
FuncInfo.MF->getFrameInfo()->setHasStackMap();
SelectionDAG &DAG = SDB->DAG;
SDLoc dl = SDB->getCurSDLoc();
const TargetLowering *TLI = getTargetLowering();
- const DataLayout *TD = TLI->getDataLayout();
+ const DataLayout *DL = TLI->getDataLayout();
SmallVector<ISD::InputArg, 16> Ins;
if (!FuncInfo->CanLowerReturn) {
Type *ArgTy = VT.getTypeForEVT(*DAG.getContext());
ISD::ArgFlagsTy Flags;
unsigned OriginalAlignment =
- TD->getABITypeAlignment(ArgTy);
+ DL->getABITypeAlignment(ArgTy);
if (F.getAttributes().hasAttribute(Idx, Attribute::ZExt))
Flags.setZExt();
if (Flags.isByVal() || Flags.isInAlloca()) {
PointerType *Ty = cast<PointerType>(I->getType());
Type *ElementTy = Ty->getElementType();
- Flags.setByValSize(TD->getTypeAllocSize(ElementTy));
+ Flags.setByValSize(DL->getTypeAllocSize(ElementTy));
// For ByVal, alignment should be passed from FE. BE will guess if
// this info is not there but there are cases it cannot get right.
unsigned FrameAlign;
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