//===----------------------------------------------------------------------===//
#include "CodeGenDAGPatterns.h"
-#include "Record.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
#include <set>
#include <algorithm>
using namespace llvm;
if (!hasVectorTypes())
MadeChange |= EnforceScalar(TP);
- // This code does not currently handle nodes which have multiple types,
- // where some types are integer, and some are fp. Assert that this is not
- // the case.
- assert(!(hasIntegerTypes() && hasFloatingPointTypes()) &&
- !(Other.hasIntegerTypes() && Other.hasFloatingPointTypes()) &&
- "SDTCisOpSmallerThanOp does not handle mixed int/fp types!");
+ if (TypeVec.size() == 1 && Other.TypeVec.size() == 1) {
+ // If we are down to concrete types, this code does not currently
+ // handle nodes which have multiple types, where some types are
+ // integer, and some are fp. Assert that this is not the case.
+ assert(!(hasIntegerTypes() && hasFloatingPointTypes()) &&
+ !(Other.hasIntegerTypes() && Other.hasFloatingPointTypes()) &&
+ "SDTCisOpSmallerThanOp does not handle mixed int/fp types!");
+
+ // Otherwise, if these are both vector types, either this vector
+ // must have a larger bitsize than the other, or this element type
+ // must be larger than the other.
+ EVT Type(TypeVec[0]);
+ EVT OtherType(Other.TypeVec[0]);
+
+ if (hasVectorTypes() && Other.hasVectorTypes()) {
+ if (Type.getSizeInBits() >= OtherType.getSizeInBits())
+ if (Type.getVectorElementType().getSizeInBits()
+ >= OtherType.getVectorElementType().getSizeInBits())
+ TP.error("Type inference contradiction found, '" +
+ getName() + "' element type not smaller than '" +
+ Other.getName() +"'!");
+ }
+ else
+ // For scalar types, the bitsize of this type must be larger
+ // than that of the other.
+ if (Type.getSizeInBits() >= OtherType.getSizeInBits())
+ TP.error("Type inference contradiction found, '" +
+ getName() + "' is not smaller than '" +
+ Other.getName() +"'!");
+
+ }
+
+
+ // Handle int and fp as disjoint sets. This won't work for patterns
+ // that have mixed fp/int types but those are likely rare and would
+ // not have been accepted by this code previously.
// Okay, find the smallest type from the current set and remove it from the
// largest set.
- MVT::SimpleValueType Smallest = TypeVec[0];
+ MVT::SimpleValueType SmallestInt = MVT::LAST_VALUETYPE;
+ for (unsigned i = 0, e = TypeVec.size(); i != e; ++i)
+ if (isInteger(TypeVec[i])) {
+ SmallestInt = TypeVec[i];
+ break;
+ }
for (unsigned i = 1, e = TypeVec.size(); i != e; ++i)
- if (TypeVec[i] < Smallest)
- Smallest = TypeVec[i];
+ if (isInteger(TypeVec[i]) && TypeVec[i] < SmallestInt)
+ SmallestInt = TypeVec[i];
+
+ MVT::SimpleValueType SmallestFP = MVT::LAST_VALUETYPE;
+ for (unsigned i = 0, e = TypeVec.size(); i != e; ++i)
+ if (isFloatingPoint(TypeVec[i])) {
+ SmallestFP = TypeVec[i];
+ break;
+ }
+ for (unsigned i = 1, e = TypeVec.size(); i != e; ++i)
+ if (isFloatingPoint(TypeVec[i]) && TypeVec[i] < SmallestFP)
+ SmallestFP = TypeVec[i];
+
+ int OtherIntSize = 0;
+ int OtherFPSize = 0;
+ for (SmallVector<MVT::SimpleValueType, 2>::iterator TVI =
+ Other.TypeVec.begin();
+ TVI != Other.TypeVec.end();
+ /* NULL */) {
+ if (isInteger(*TVI)) {
+ ++OtherIntSize;
+ if (*TVI == SmallestInt) {
+ TVI = Other.TypeVec.erase(TVI);
+ --OtherIntSize;
+ MadeChange = true;
+ continue;
+ }
+ }
+ else if (isFloatingPoint(*TVI)) {
+ ++OtherFPSize;
+ if (*TVI == SmallestFP) {
+ TVI = Other.TypeVec.erase(TVI);
+ --OtherFPSize;
+ MadeChange = true;
+ continue;
+ }
+ }
+ ++TVI;
+ }
// If this is the only type in the large set, the constraint can never be
// satisfied.
- if (Other.TypeVec.size() == 1 && Other.TypeVec[0] == Smallest)
+ if ((Other.hasIntegerTypes() && OtherIntSize == 0)
+ || (Other.hasFloatingPointTypes() && OtherFPSize == 0))
TP.error("Type inference contradiction found, '" +
Other.getName() + "' has nothing larger than '" + getName() +"'!");
- SmallVector<MVT::SimpleValueType, 2>::iterator TVI =
- std::find(Other.TypeVec.begin(), Other.TypeVec.end(), Smallest);
- if (TVI != Other.TypeVec.end()) {
- Other.TypeVec.erase(TVI);
- MadeChange = true;
- }
-
// Okay, find the largest type in the Other set and remove it from the
// current set.
- MVT::SimpleValueType Largest = Other.TypeVec[0];
+ MVT::SimpleValueType LargestInt = MVT::Other;
+ for (unsigned i = 0, e = Other.TypeVec.size(); i != e; ++i)
+ if (isInteger(Other.TypeVec[i])) {
+ LargestInt = Other.TypeVec[i];
+ break;
+ }
+ for (unsigned i = 1, e = Other.TypeVec.size(); i != e; ++i)
+ if (isInteger(Other.TypeVec[i]) && Other.TypeVec[i] > LargestInt)
+ LargestInt = Other.TypeVec[i];
+
+ MVT::SimpleValueType LargestFP = MVT::Other;
+ for (unsigned i = 0, e = Other.TypeVec.size(); i != e; ++i)
+ if (isFloatingPoint(Other.TypeVec[i])) {
+ LargestFP = Other.TypeVec[i];
+ break;
+ }
for (unsigned i = 1, e = Other.TypeVec.size(); i != e; ++i)
- if (Other.TypeVec[i] > Largest)
- Largest = Other.TypeVec[i];
+ if (isFloatingPoint(Other.TypeVec[i]) && Other.TypeVec[i] > LargestFP)
+ LargestFP = Other.TypeVec[i];
+
+ int IntSize = 0;
+ int FPSize = 0;
+ for (SmallVector<MVT::SimpleValueType, 2>::iterator TVI =
+ TypeVec.begin();
+ TVI != TypeVec.end();
+ /* NULL */) {
+ if (isInteger(*TVI)) {
+ ++IntSize;
+ if (*TVI == LargestInt) {
+ TVI = TypeVec.erase(TVI);
+ --IntSize;
+ MadeChange = true;
+ continue;
+ }
+ }
+ else if (isFloatingPoint(*TVI)) {
+ ++FPSize;
+ if (*TVI == LargestFP) {
+ TVI = TypeVec.erase(TVI);
+ --FPSize;
+ MadeChange = true;
+ continue;
+ }
+ }
+ ++TVI;
+ }
// If this is the only type in the small set, the constraint can never be
// satisfied.
- if (TypeVec.size() == 1 && TypeVec[0] == Largest)
+ if ((hasIntegerTypes() && IntSize == 0)
+ || (hasFloatingPointTypes() && FPSize == 0))
TP.error("Type inference contradiction found, '" +
getName() + "' has nothing smaller than '" + Other.getName()+"'!");
- TVI = std::find(TypeVec.begin(), TypeVec.end(), Largest);
- if (TVI != TypeVec.end()) {
- TypeVec.erase(TVI);
- MadeChange = true;
- }
-
return MadeChange;
}
return MadeChange;
}
+/// EnforceVectorSubVectorTypeIs - 'this' is now constrainted to be a
+/// vector type specified by VTOperand.
+bool EEVT::TypeSet::EnforceVectorSubVectorTypeIs(EEVT::TypeSet &VTOperand,
+ TreePattern &TP) {
+ // "This" must be a vector and "VTOperand" must be a vector.
+ bool MadeChange = false;
+ MadeChange |= EnforceVector(TP);
+ MadeChange |= VTOperand.EnforceVector(TP);
+
+ // "This" must be larger than "VTOperand."
+ MadeChange |= VTOperand.EnforceSmallerThan(*this, TP);
+
+ // If we know the vector type, it forces the scalar types to agree.
+ if (isConcrete()) {
+ EVT IVT = getConcrete();
+ IVT = IVT.getVectorElementType();
+
+ EEVT::TypeSet EltTypeSet(IVT.getSimpleVT().SimpleTy, TP);
+ MadeChange |= VTOperand.EnforceVectorEltTypeIs(EltTypeSet, TP);
+ } else if (VTOperand.isConcrete()) {
+ EVT IVT = VTOperand.getConcrete();
+ IVT = IVT.getVectorElementType();
+
+ EEVT::TypeSet EltTypeSet(IVT.getSimpleVT().SimpleTy, TP);
+ MadeChange |= EnforceVectorEltTypeIs(EltTypeSet, TP);
+ }
+
+ return MadeChange;
+}
+
//===----------------------------------------------------------------------===//
// Helpers for working with extended types.
/// Const iterator shorthand for DepVarMap
typedef DepVarMap::const_iterator DepVarMap_citer;
-namespace {
-void FindDepVarsOf(TreePatternNode *N, DepVarMap &DepMap) {
+static void FindDepVarsOf(TreePatternNode *N, DepVarMap &DepMap) {
if (N->isLeaf()) {
- if (dynamic_cast<DefInit*>(N->getLeafValue()) != NULL) {
+ if (dynamic_cast<DefInit*>(N->getLeafValue()) != NULL)
DepMap[N->getName()]++;
- }
} else {
for (size_t i = 0, e = N->getNumChildren(); i != e; ++i)
FindDepVarsOf(N->getChild(i), DepMap);
}
}
-
-//! Find dependent variables within child patterns
-/*!
- */
-void FindDepVars(TreePatternNode *N, MultipleUseVarSet &DepVars) {
+
+/// Find dependent variables within child patterns
+static void FindDepVars(TreePatternNode *N, MultipleUseVarSet &DepVars) {
DepVarMap depcounts;
FindDepVarsOf(N, depcounts);
for (DepVarMap_citer i = depcounts.begin(); i != depcounts.end(); ++i) {
- if (i->second > 1) { // std::pair<std::string, int>
+ if (i->second > 1) // std::pair<std::string, int>
DepVars.insert(i->first);
- }
}
}
-//! Dump the dependent variable set:
#ifndef NDEBUG
-void DumpDepVars(MultipleUseVarSet &DepVars) {
+/// Dump the dependent variable set:
+static void DumpDepVars(MultipleUseVarSet &DepVars) {
if (DepVars.empty()) {
DEBUG(errs() << "<empty set>");
} else {
}
#endif
+
+//===----------------------------------------------------------------------===//
+// TreePredicateFn Implementation
+//===----------------------------------------------------------------------===//
+
+/// TreePredicateFn constructor. Here 'N' is a subclass of PatFrag.
+TreePredicateFn::TreePredicateFn(TreePattern *N) : PatFragRec(N) {
+ assert((getPredCode().empty() || getImmCode().empty()) &&
+ ".td file corrupt: can't have a node predicate *and* an imm predicate");
+}
+
+std::string TreePredicateFn::getPredCode() const {
+ return PatFragRec->getRecord()->getValueAsString("PredicateCode");
+}
+
+std::string TreePredicateFn::getImmCode() const {
+ return PatFragRec->getRecord()->getValueAsString("ImmediateCode");
+}
+
+
+/// isAlwaysTrue - Return true if this is a noop predicate.
+bool TreePredicateFn::isAlwaysTrue() const {
+ return getPredCode().empty() && getImmCode().empty();
+}
+
+/// Return the name to use in the generated code to reference this, this is
+/// "Predicate_foo" if from a pattern fragment "foo".
+std::string TreePredicateFn::getFnName() const {
+ return "Predicate_" + PatFragRec->getRecord()->getName();
+}
+
+/// getCodeToRunOnSDNode - Return the code for the function body that
+/// evaluates this predicate. The argument is expected to be in "Node",
+/// not N. This handles casting and conversion to a concrete node type as
+/// appropriate.
+std::string TreePredicateFn::getCodeToRunOnSDNode() const {
+ // Handle immediate predicates first.
+ std::string ImmCode = getImmCode();
+ if (!ImmCode.empty()) {
+ std::string Result =
+ " int64_t Imm = cast<ConstantSDNode>(Node)->getSExtValue();\n";
+ return Result + ImmCode;
+ }
+
+ // Handle arbitrary node predicates.
+ assert(!getPredCode().empty() && "Don't have any predicate code!");
+ std::string ClassName;
+ if (PatFragRec->getOnlyTree()->isLeaf())
+ ClassName = "SDNode";
+ else {
+ Record *Op = PatFragRec->getOnlyTree()->getOperator();
+ ClassName = PatFragRec->getDAGPatterns().getSDNodeInfo(Op).getSDClassName();
+ }
+ std::string Result;
+ if (ClassName == "SDNode")
+ Result = " SDNode *N = Node;\n";
+ else
+ Result = " " + ClassName + "*N = cast<" + ClassName + ">(Node);\n";
+
+ return Result + getPredCode();
}
//===----------------------------------------------------------------------===//
#ifndef NDEBUG
Def->dump();
#endif
- assert(0 && "Unknown predicate type!");
+ llvm_unreachable("Unknown predicate type!");
}
if (!PredicateCheck.empty())
PredicateCheck += " && ";
} else if (R->isSubClassOf("SDTCisEltOfVec")) {
ConstraintType = SDTCisEltOfVec;
x.SDTCisEltOfVec_Info.OtherOperandNum = R->getValueAsInt("OtherOpNum");
+ } else if (R->isSubClassOf("SDTCisSubVecOfVec")) {
+ ConstraintType = SDTCisSubVecOfVec;
+ x.SDTCisSubVecOfVec_Info.OtherOperandNum =
+ R->getValueAsInt("OtherOpNum");
} else {
errs() << "Unrecognized SDTypeConstraint '" << R->getName() << "'!\n";
exit(1);
TreePatternNode *NodeToApply = getOperandNum(OperandNo, N, NodeInfo, ResNo);
switch (ConstraintType) {
- default: assert(0 && "Unknown constraint type!");
case SDTCisVT:
// Operand must be a particular type.
return NodeToApply->UpdateNodeType(ResNo, x.SDTCisVT_Info.VT, TP);
return VecOperand->getExtType(VResNo).
EnforceVectorEltTypeIs(NodeToApply->getExtType(ResNo), TP);
}
+ case SDTCisSubVecOfVec: {
+ unsigned VResNo = 0;
+ TreePatternNode *BigVecOperand =
+ getOperandNum(x.SDTCisSubVecOfVec_Info.OtherOperandNum, N, NodeInfo,
+ VResNo);
+
+ // Filter vector types out of BigVecOperand that don't have the
+ // right subvector type.
+ return BigVecOperand->getExtType(VResNo).
+ EnforceVectorSubVectorTypeIs(NodeToApply->getExtType(ResNo), TP);
}
- return false;
+ }
+ llvm_unreachable("Invalid ConstraintType!");
}
//===----------------------------------------------------------------------===//
Properties |= 1 << SDNPAssociative;
} else if (PropList[i]->getName() == "SDNPHasChain") {
Properties |= 1 << SDNPHasChain;
- } else if (PropList[i]->getName() == "SDNPOutFlag") {
- Properties |= 1 << SDNPOutFlag;
- } else if (PropList[i]->getName() == "SDNPInFlag") {
- Properties |= 1 << SDNPInFlag;
- } else if (PropList[i]->getName() == "SDNPOptInFlag") {
- Properties |= 1 << SDNPOptInFlag;
+ } else if (PropList[i]->getName() == "SDNPOutGlue") {
+ Properties |= 1 << SDNPOutGlue;
+ } else if (PropList[i]->getName() == "SDNPInGlue") {
+ Properties |= 1 << SDNPInGlue;
+ } else if (PropList[i]->getName() == "SDNPOptInGlue") {
+ Properties |= 1 << SDNPOptInGlue;
} else if (PropList[i]->getName() == "SDNPMayStore") {
Properties |= 1 << SDNPMayStore;
} else if (PropList[i]->getName() == "SDNPMayLoad") {
}
for (unsigned i = 0, e = PredicateFns.size(); i != e; ++i)
- OS << "<<P:" << PredicateFns[i] << ">>";
+ OS << "<<P:" << PredicateFns[i].getFnName() << ">>";
if (TransformFn)
OS << "<<X:" << TransformFn->getName() << ">>";
if (!getName().empty())
TreePatternNode *FragTree = Frag->getOnlyTree()->clone();
- std::string Code = Op->getValueAsCode("Predicate");
- if (!Code.empty())
- FragTree->addPredicateFn("Predicate_"+Op->getName());
+ TreePredicateFn PredFn(Frag);
+ if (!PredFn.isAlwaysTrue())
+ FragTree->addPredicateFn(PredFn);
// Resolve formal arguments to their actual value.
if (Frag->getNumArgs()) {
///
static EEVT::TypeSet getImplicitType(Record *R, unsigned ResNo,
bool NotRegisters, TreePattern &TP) {
+ // Check to see if this is a register operand.
+ if (R->isSubClassOf("RegisterOperand")) {
+ assert(ResNo == 0 && "Regoperand ref only has one result!");
+ if (NotRegisters)
+ return EEVT::TypeSet(); // Unknown.
+ Record *RegClass = R->getValueAsDef("RegClass");
+ const CodeGenTarget &T = TP.getDAGPatterns().getTargetInfo();
+ return EEVT::TypeSet(T.getRegisterClass(RegClass).getValueTypes());
+ }
+
// Check to see if this is a register or a register class.
if (R->isSubClassOf("RegisterClass")) {
assert(ResNo == 0 && "Regclass ref only has one result!");
if (ResultNode->isSubClassOf("PointerLikeRegClass")) {
MadeChange |= UpdateNodeType(ResNo, MVT::iPTR, TP);
+ } else if (ResultNode->isSubClassOf("RegisterOperand")) {
+ Record *RegClass = ResultNode->getValueAsDef("RegClass");
+ const CodeGenRegisterClass &RC =
+ CDP.getTargetInfo().getRegisterClass(RegClass);
+ MadeChange |= UpdateNodeType(ResNo, RC.getValueTypes(), TP);
} else if (ResultNode->getName() == "unknown") {
// Nothing to do.
} else {
const CodeGenRegisterClass &RC =
CDP.getTargetInfo().getRegisterClass(OperandNode);
MadeChange |= Child->UpdateNodeType(ChildResNo, RC.getValueTypes(), TP);
+ } else if (OperandNode->isSubClassOf("RegisterOperand")) {
+ Record *RegClass = OperandNode->getValueAsDef("RegClass");
+ const CodeGenRegisterClass &RC =
+ CDP.getTargetInfo().getRegisterClass(RegClass);
+ MadeChange |= Child->UpdateNodeType(ChildResNo, RC.getValueTypes(), TP);
} else if (OperandNode->isSubClassOf("Operand")) {
VT = getValueType(OperandNode->getValueAsDef("Type"));
MadeChange |= Child->UpdateNodeType(ChildResNo, VT, TP);
MadeChange |= Child->UpdateNodeType(ChildResNo, MVT::iPTR, TP);
} else if (OperandNode->getName() == "unknown") {
// Nothing to do.
- } else {
- assert(0 && "Unknown operand type!");
- abort();
- }
+ } else
+ llvm_unreachable("Unknown operand type!");
+
MadeChange |= Child->ApplyTypeConstraints(TP, NotRegisters);
}
Record *R = DI->getDef();
// Direct reference to a leaf DagNode or PatFrag? Turn it into a
- // TreePatternNode if its own. For example:
+ // TreePatternNode of its own. For example:
/// (foo GPR, imm) -> (foo GPR, (imm))
if (R->isSubClassOf("SDNode") || R->isSubClassOf("PatFrag"))
- return ParseTreePattern(new DagInit(DI, "",
- std::vector<std::pair<Init*, std::string> >()),
- OpName);
+ return ParseTreePattern(
+ DagInit::get(DI, "",
+ std::vector<std::pair<Init*, std::string> >()),
+ OpName);
// Input argument?
TreePatternNode *Res = new TreePatternNode(DI, 1);
if (BitsInit *BI = dynamic_cast<BitsInit*>(TheInit)) {
// Turn this into an IntInit.
- Init *II = BI->convertInitializerTo(new IntRecTy());
+ Init *II = BI->convertInitializerTo(IntRecTy::get());
if (II == 0 || !dynamic_cast<IntInit*>(II))
error("Bits value must be constants!");
return ParseTreePattern(II, OpName);
else // Otherwise, no chain.
Operator = getDAGPatterns().get_intrinsic_wo_chain_sdnode();
- TreePatternNode *IIDNode = new TreePatternNode(new IntInit(IID), 1);
+ TreePatternNode *IIDNode = new TreePatternNode(IntInit::get(IID), 1);
Children.insert(Children.begin(), IIDNode);
}
// def : Pat<(v1i64 (bitconvert(v2i32 DPR:$src))), (v1i64 DPR:$src)>;
if (Nodes[i] == Trees[0] && Nodes[i]->isLeaf()) {
DefInit *DI = dynamic_cast<DefInit*>(Nodes[i]->getLeafValue());
- if (DI && DI->getDef()->isSubClassOf("RegisterClass"))
+ if (DI && (DI->getDef()->isSubClassOf("RegisterClass") ||
+ DI->getDef()->isSubClassOf("RegisterOperand")))
continue;
}
while (!Xforms.empty()) {
Record *XFormNode = Xforms.back();
Record *SDNode = XFormNode->getValueAsDef("Opcode");
- std::string Code = XFormNode->getValueAsCode("XFormFunction");
+ std::string Code = XFormNode->getValueAsString("XFormFunction");
SDNodeXForms.insert(std::make_pair(XFormNode, NodeXForm(SDNode, Code)));
Xforms.pop_back();
// If there is a code init for this fragment, keep track of the fact that
// this fragment uses it.
- std::string Code = Fragments[i]->getValueAsCode("Predicate");
- if (!Code.empty())
- P->getOnlyTree()->addPredicateFn("Predicate_"+Fragments[i]->getName());
+ TreePredicateFn PredFn(P);
+ if (!PredFn.isAlwaysTrue())
+ P->getOnlyTree()->addPredicateFn(PredFn);
// If there is a node transformation corresponding to this, keep track of
// it.
// Find some SDNode.
assert(!SDNodes.empty() && "No SDNodes parsed?");
- Init *SomeSDNode = new DefInit(SDNodes.begin()->first);
+ Init *SomeSDNode = DefInit::get(SDNodes.begin()->first);
for (unsigned iter = 0; iter != 2; ++iter) {
for (unsigned i = 0, e = DefaultOps[iter].size(); i != e; ++i) {
for (unsigned op = 0, e = DefaultInfo->getNumArgs(); op != e; ++op)
Ops.push_back(std::make_pair(DefaultInfo->getArg(op),
DefaultInfo->getArgName(op)));
- DagInit *DI = new DagInit(SomeSDNode, "", Ops);
+ DagInit *DI = DagInit::get(SomeSDNode, "", Ops);
// Create a TreePattern to parse this.
TreePattern P(DefaultOps[iter][i], DI, false, *this);
if (Pat->getName().empty()) {
if (Pat->isLeaf()) {
DefInit *DI = dynamic_cast<DefInit*>(Pat->getLeafValue());
- if (DI && DI->getDef()->isSubClassOf("RegisterClass"))
+ if (DI && (DI->getDef()->isSubClassOf("RegisterClass") ||
+ DI->getDef()->isSubClassOf("RegisterOperand")))
I->error("Input " + DI->getDef()->getName() + " must be named!");
}
return false;
I->error("set destination should be a register!");
if (Val->getDef()->isSubClassOf("RegisterClass") ||
+ Val->getDef()->isSubClassOf("RegisterOperand") ||
Val->getDef()->isSubClassOf("PointerLikeRegClass")) {
if (Dest->getName().empty())
I->error("set destination must have a name!");
const CodeGenDAGPatterns &CDP;
bool &mayStore;
bool &mayLoad;
+ bool &IsBitcast;
bool &HasSideEffects;
bool &IsVariadic;
public:
InstAnalyzer(const CodeGenDAGPatterns &cdp,
- bool &maystore, bool &mayload, bool &hse, bool &isv)
- : CDP(cdp), mayStore(maystore), mayLoad(mayload), HasSideEffects(hse),
- IsVariadic(isv) {
+ bool &maystore, bool &mayload, bool &isbc, bool &hse, bool &isv)
+ : CDP(cdp), mayStore(maystore), mayLoad(mayload), IsBitcast(isbc),
+ HasSideEffects(hse), IsVariadic(isv) {
}
/// Analyze - Analyze the specified instruction, returning true if the
}
private:
+ bool IsNodeBitcast(const TreePatternNode *N) const {
+ if (HasSideEffects || mayLoad || mayStore || IsVariadic)
+ return false;
+
+ if (N->getNumChildren() != 2)
+ return false;
+
+ const TreePatternNode *N0 = N->getChild(0);
+ if (!N0->isLeaf() || !dynamic_cast<DefInit*>(N0->getLeafValue()))
+ return false;
+
+ const TreePatternNode *N1 = N->getChild(1);
+ if (N1->isLeaf())
+ return false;
+ if (N1->getNumChildren() != 1 || !N1->getChild(0)->isLeaf())
+ return false;
+
+ const SDNodeInfo &OpInfo = CDP.getSDNodeInfo(N1->getOperator());
+ if (OpInfo.getNumResults() != 1 || OpInfo.getNumOperands() != 1)
+ return false;
+ return OpInfo.getEnumName() == "ISD::BITCAST";
+ }
+
void AnalyzeNode(const TreePatternNode *N) {
if (N->isLeaf()) {
if (DefInit *DI = dynamic_cast<DefInit*>(N->getLeafValue())) {
AnalyzeNode(N->getChild(i));
// Ignore set nodes, which are not SDNodes.
- if (N->getOperator()->getName() == "set")
+ if (N->getOperator()->getName() == "set") {
+ IsBitcast = IsNodeBitcast(N);
return;
+ }
// Get information about the SDNode for the operator.
const SDNodeInfo &OpInfo = CDP.getSDNodeInfo(N->getOperator());
static void InferFromPattern(const CodeGenInstruction &Inst,
bool &MayStore, bool &MayLoad,
+ bool &IsBitcast,
bool &HasSideEffects, bool &IsVariadic,
const CodeGenDAGPatterns &CDP) {
- MayStore = MayLoad = HasSideEffects = IsVariadic = false;
+ MayStore = MayLoad = IsBitcast = HasSideEffects = IsVariadic = false;
bool HadPattern =
- InstAnalyzer(CDP, MayStore, MayLoad, HasSideEffects, IsVariadic)
+ InstAnalyzer(CDP, MayStore, MayLoad, IsBitcast, HasSideEffects, IsVariadic)
.Analyze(Inst.TheDef);
// InstAnalyzer only correctly analyzes mayStore/mayLoad so far.
CodeGenInstruction &InstInfo =
const_cast<CodeGenInstruction &>(*Instructions[i]);
// Determine properties of the instruction from its pattern.
- bool MayStore, MayLoad, HasSideEffects, IsVariadic;
- InferFromPattern(InstInfo, MayStore, MayLoad, HasSideEffects, IsVariadic,
- *this);
+ bool MayStore, MayLoad, IsBitcast, HasSideEffects, IsVariadic;
+ InferFromPattern(InstInfo, MayStore, MayLoad, IsBitcast,
+ HasSideEffects, IsVariadic, *this);
InstInfo.mayStore = MayStore;
InstInfo.mayLoad = MayLoad;
+ InstInfo.isBitcast = IsBitcast;
InstInfo.hasSideEffects = HasSideEffects;
InstInfo.Operands.isVariadic = IsVariadic;
+
+ // Sanity checks.
+ if (InstInfo.isReMaterializable && InstInfo.hasSideEffects)
+ throw TGError(InstInfo.TheDef->getLoc(), "The instruction " +
+ InstInfo.TheDef->getName() +
+ " is rematerializable AND has unmodeled side effects?");
}
}
projects / oota-llvm.git / blobdiff