#ifndef CODEGEN_DAGPATTERNS_H
#define CODEGEN_DAGPATTERNS_H
-#include "CodeGenTarget.h"
#include "CodeGenIntrinsics.h"
+#include "CodeGenTarget.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
-#include <set>
+#include "llvm/Support/ErrorHandling.h"
#include <algorithm>
-#include <vector>
#include <map>
+#include <set>
+#include <vector>
namespace llvm {
class Record;
- struct Init;
+ class Init;
class ListInit;
class DagInit;
class SDNodeInfo;
/// MergeInTypeInfo - This merges in type information from the specified
/// argument. If 'this' changes, it returns true. If the two types are
- /// contradictory (e.g. merge f32 into i32) then this throws an exception.
+ /// contradictory (e.g. merge f32 into i32) then this flags an error.
bool MergeInTypeInfo(const EEVT::TypeSet &InVT, TreePattern &TP);
bool MergeInTypeInfo(MVT::SimpleValueType InVT, TreePattern &TP) {
/// ApplyTypeConstraint - Given a node in a pattern, apply this type
/// constraint to the nodes operands. This returns true if it makes a
- /// change, false otherwise. If a type contradiction is found, throw an
- /// exception.
+ /// change, false otherwise. If a type contradiction is found, an error
+ /// is flagged.
bool ApplyTypeConstraint(TreePatternNode *N, const SDNodeInfo &NodeInfo,
TreePattern &TP) const;
};
/// ApplyTypeConstraints - Given a node in a pattern, apply the type
/// constraints for this node to the operands of the node. This returns
/// true if it makes a change, false otherwise. If a type contradiction is
- /// found, throw an exception.
+ /// found, an error is flagged.
bool ApplyTypeConstraints(TreePatternNode *N, TreePattern &TP) const {
bool MadeChange = false;
for (unsigned i = 0, e = TypeConstraints.size(); i != e; ++i)
return MadeChange;
}
};
+
+/// TreePredicateFn - This is an abstraction that represents the predicates on
+/// a PatFrag node. This is a simple one-word wrapper around a pointer to
+/// provide nice accessors.
+class TreePredicateFn {
+ /// PatFragRec - This is the TreePattern for the PatFrag that we
+ /// originally came from.
+ TreePattern *PatFragRec;
+public:
+ /// TreePredicateFn constructor. Here 'N' is a subclass of PatFrag.
+ TreePredicateFn(TreePattern *N);
+
+
+ TreePattern *getOrigPatFragRecord() const { return PatFragRec; }
+
+ /// isAlwaysTrue - Return true if this is a noop predicate.
+ bool isAlwaysTrue() const;
+
+ bool isImmediatePattern() const { return !getImmCode().empty(); }
+
+ /// getImmediatePredicateCode - Return the code that evaluates this pattern if
+ /// this is an immediate predicate. It is an error to call this on a
+ /// non-immediate pattern.
+ std::string getImmediatePredicateCode() const {
+ std::string Result = getImmCode();
+ assert(!Result.empty() && "Isn't an immediate pattern!");
+ return Result;
+ }
+
+
+ bool operator==(const TreePredicateFn &RHS) const {
+ return PatFragRec == RHS.PatFragRec;
+ }
+
+ bool operator!=(const TreePredicateFn &RHS) const { return !(*this == RHS); }
+
+ /// Return the name to use in the generated code to reference this, this is
+ /// "Predicate_foo" if from a pattern fragment "foo".
+ std::string getFnName() const;
+
+ /// 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 getCodeToRunOnSDNode() const;
+
+private:
+ std::string getPredCode() const;
+ std::string getImmCode() const;
+};
+
/// FIXME: TreePatternNode's can be shared in some cases (due to dag-shaped
/// patterns), and as such should be ref counted. We currently just leak all
/// PredicateFns - The predicate functions to execute on this node to check
/// for a match. If this list is empty, no predicate is involved.
- std::vector<std::string> PredicateFns;
+ std::vector<TreePredicateFn> PredicateFns;
/// TransformFn - The transformation function to execute on this node before
/// it can be substituted into the resulting instruction on a pattern match.
return false;
}
- const std::vector<std::string> &getPredicateFns() const {return PredicateFns;}
+ bool hasAnyPredicate() const { return !PredicateFns.empty(); }
+
+ const std::vector<TreePredicateFn> &getPredicateFns() const {
+ return PredicateFns;
+ }
void clearPredicateFns() { PredicateFns.clear(); }
- void setPredicateFns(const std::vector<std::string> &Fns) {
+ void setPredicateFns(const std::vector<TreePredicateFn> &Fns) {
assert(PredicateFns.empty() && "Overwriting non-empty predicate list!");
PredicateFns = Fns;
}
- void addPredicateFn(const std::string &Fn) {
- assert(!Fn.empty() && "Empty predicate string!");
+ void addPredicateFn(const TreePredicateFn &Fn) {
+ assert(!Fn.isAlwaysTrue() && "Empty predicate string!");
if (std::find(PredicateFns.begin(), PredicateFns.end(), Fn) ==
PredicateFns.end())
PredicateFns.push_back(Fn);
/// ApplyTypeConstraints - Apply all of the type constraints relevant to
/// this node and its children in the tree. This returns true if it makes a
- /// change, false otherwise. If a type contradiction is found, throw an
- /// exception.
+ /// change, false otherwise. If a type contradiction is found, flag an error.
bool ApplyTypeConstraints(TreePattern &TP, bool NotRegisters);
/// UpdateNodeType - Set the node type of N to VT if VT contains
- /// information. If N already contains a conflicting type, then throw an
- /// exception. This returns true if any information was updated.
+ /// information. If N already contains a conflicting type, then flag an
+ /// error. This returns true if any information was updated.
///
bool UpdateNodeType(unsigned ResNo, const EEVT::TypeSet &InTy,
TreePattern &TP) {
/// isInputPattern - True if this is an input pattern, something to match.
/// False if this is an output pattern, something to emit.
bool isInputPattern;
+
+ /// hasError - True if the currently processed nodes have unresolvable types
+ /// or other non-fatal errors
+ bool HasError;
public:
/// TreePattern constructor - Parse the specified DagInits into the
/// InferAllTypes - Infer/propagate as many types throughout the expression
/// patterns as possible. Return true if all types are inferred, false
- /// otherwise. Throw an exception if a type contradiction is found.
+ /// otherwise. Bail out if a type contradiction is found.
bool InferAllTypes(const StringMap<SmallVector<TreePatternNode*,1> >
*NamedTypes=0);
- /// error - Throw an exception, prefixing it with information about this
- /// pattern.
- void error(const std::string &Msg) const;
+ /// error - If this is the first error in the current resolution step,
+ /// print it and set the error flag. Otherwise, continue silently.
+ void error(const std::string &Msg);
+ bool hasError() const {
+ return HasError;
+ }
+ void resetError() {
+ HasError = false;
+ }
void print(raw_ostream &OS) const;
void dump() const;
void ComputeNamedNodes(TreePatternNode *N);
};
-/// DAGDefaultOperand - One of these is created for each PredicateOperand
-/// or OptionalDefOperand that has a set ExecuteAlways / DefaultOps field.
+/// DAGDefaultOperand - One of these is created for each OperandWithDefaultOps
+/// that has a set ExecuteAlways / DefaultOps field.
struct DAGDefaultOperand {
std::vector<TreePatternNode*> DefaultOps;
};
: Pattern(TP), Results(results), Operands(operands),
ImpResults(impresults), ResultPattern(0) {}
- const TreePattern *getPattern() const { return Pattern; }
+ TreePattern *getPattern() const { return Pattern; }
unsigned getNumResults() const { return Results.size(); }
unsigned getNumOperands() const { return Operands.size(); }
unsigned getNumImpResults() const { return ImpResults.size(); }
unsigned getPatternComplexity(const CodeGenDAGPatterns &CGP) const;
};
-// Deterministic comparison of Record*.
-struct RecordPtrCmp {
- bool operator()(const Record *LHS, const Record *RHS) const;
-};
-
class CodeGenDAGPatterns {
RecordKeeper &Records;
CodeGenTarget Target;
std::vector<CodeGenIntrinsic> Intrinsics;
std::vector<CodeGenIntrinsic> TgtIntrinsics;
- std::map<Record*, SDNodeInfo, RecordPtrCmp> SDNodes;
- std::map<Record*, std::pair<Record*, std::string>, RecordPtrCmp> SDNodeXForms;
- std::map<Record*, ComplexPattern, RecordPtrCmp> ComplexPatterns;
- std::map<Record*, TreePattern*, RecordPtrCmp> PatternFragments;
- std::map<Record*, DAGDefaultOperand, RecordPtrCmp> DefaultOperands;
- std::map<Record*, DAGInstruction, RecordPtrCmp> Instructions;
+ std::map<Record*, SDNodeInfo, LessRecordByID> SDNodes;
+ std::map<Record*, std::pair<Record*, std::string>, LessRecordByID> SDNodeXForms;
+ std::map<Record*, ComplexPattern, LessRecordByID> ComplexPatterns;
+ std::map<Record*, TreePattern*, LessRecordByID> PatternFragments;
+ std::map<Record*, DAGDefaultOperand, LessRecordByID> DefaultOperands;
+ std::map<Record*, DAGInstruction, LessRecordByID> Instructions;
// Specific SDNode definitions:
Record *intrinsic_void_sdnode;
return SDNodeXForms.find(R)->second;
}
- typedef std::map<Record*, NodeXForm, RecordPtrCmp>::const_iterator
+ typedef std::map<Record*, NodeXForm, LessRecordByID>::const_iterator
nx_iterator;
nx_iterator nx_begin() const { return SDNodeXForms.begin(); }
nx_iterator nx_end() const { return SDNodeXForms.end(); }
if (Intrinsics[i].TheDef == R) return Intrinsics[i];
for (unsigned i = 0, e = TgtIntrinsics.size(); i != e; ++i)
if (TgtIntrinsics[i].TheDef == R) return TgtIntrinsics[i];
- assert(0 && "Unknown intrinsic!");
- abort();
+ llvm_unreachable("Unknown intrinsic!");
}
const CodeGenIntrinsic &getIntrinsicInfo(unsigned IID) const {
return Intrinsics[IID-1];
if (IID-Intrinsics.size()-1 < TgtIntrinsics.size())
return TgtIntrinsics[IID-Intrinsics.size()-1];
- assert(0 && "Bad intrinsic ID!");
- abort();
+ llvm_unreachable("Bad intrinsic ID!");
}
unsigned getIntrinsicID(Record *R) const {
if (Intrinsics[i].TheDef == R) return i;
for (unsigned i = 0, e = TgtIntrinsics.size(); i != e; ++i)
if (TgtIntrinsics[i].TheDef == R) return i + Intrinsics.size();
- assert(0 && "Unknown intrinsic!");
- abort();
+ llvm_unreachable("Unknown intrinsic!");
}
const DAGDefaultOperand &getDefaultOperand(Record *R) const {
return PatternFragments.find(R)->second;
}
- typedef std::map<Record*, TreePattern*, RecordPtrCmp>::const_iterator
+ typedef std::map<Record*, TreePattern*, LessRecordByID>::const_iterator
pf_iterator;
pf_iterator pf_begin() const { return PatternFragments.begin(); }
pf_iterator pf_end() const { return PatternFragments.end(); }
void ParsePatterns();
void InferInstructionFlags();
void GenerateVariants();
+ void VerifyInstructionFlags();
- void AddPatternToMatch(const TreePattern *Pattern, const PatternToMatch &PTM);
+ void AddPatternToMatch(TreePattern *Pattern, const PatternToMatch &PTM);
void FindPatternInputsAndOutputs(TreePattern *I, TreePatternNode *Pat,
std::map<std::string,
TreePatternNode*> &InstInputs,
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