[AVX] Make Inits Foldable
Manage Inits in a FoldingSet. This provides several benefits:
- Memory for Inits is properly managed
- Duplicate Inits are folded into Flyweights, saving memory
- It enforces const-correctness, protecting against certain classes
of bugs
The above benefits allow Inits to be used in more contexts, which in
turn provides more dynamism to TableGen. This enhanced capability
will be used by the AVX code generator to a fold common patterns
together.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134907 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/CodeGenDAGPatterns.h b/utils/TableGen/CodeGenDAGPatterns.h
index e4e8574..f517219 100644
--- a/utils/TableGen/CodeGenDAGPatterns.h
+++ b/utils/TableGen/CodeGenDAGPatterns.h
@@ -306,7 +306,7 @@
/// Val - The init value (e.g. the "GPRC" record, or "7") for a leaf.
///
- Init *Val;
+ const Init *Val;
/// Name - The name given to this node with the :$foo notation.
///
@@ -327,7 +327,7 @@
: Operator(Op), Val(0), TransformFn(0), Children(Ch) {
Types.resize(NumResults);
}
- TreePatternNode(Init *val, unsigned NumResults) // leaf ctor
+ TreePatternNode(const Init *val, unsigned NumResults) // leaf ctor
: Operator(0), Val(val), TransformFn(0) {
Types.resize(NumResults);
}
@@ -358,7 +358,7 @@
return Types[ResNo].isDynamicallyResolved();
}
- Init *getLeafValue() const { assert(isLeaf()); return Val; }
+ const Init *getLeafValue() const { assert(isLeaf()); return Val; }
Record *getOperator() const { assert(!isLeaf()); return Operator; }
unsigned getNumChildren() const { return Children.size(); }
@@ -517,9 +517,9 @@
/// TreePattern constructor - Parse the specified DagInits into the
/// current record.
- TreePattern(Record *TheRec, ListInit *RawPat, bool isInput,
+ TreePattern(Record *TheRec, const ListInit *RawPat, bool isInput,
CodeGenDAGPatterns &ise);
- TreePattern(Record *TheRec, DagInit *Pat, bool isInput,
+ TreePattern(Record *TheRec, const DagInit *Pat, bool isInput,
CodeGenDAGPatterns &ise);
TreePattern(Record *TheRec, TreePatternNode *Pat, bool isInput,
CodeGenDAGPatterns &ise);
@@ -576,7 +576,7 @@
void dump() const;
private:
- TreePatternNode *ParseTreePattern(Init *DI, StringRef OpName);
+ TreePatternNode *ParseTreePattern(const Init *DI, StringRef OpName);
void ComputeNamedNodes();
void ComputeNamedNodes(TreePatternNode *N);
};
@@ -631,7 +631,7 @@
/// processed to produce isel.
class PatternToMatch {
public:
- PatternToMatch(Record *srcrecord, ListInit *preds,
+ PatternToMatch(Record *srcrecord, const ListInit *preds,
TreePatternNode *src, TreePatternNode *dst,
const std::vector<Record*> &dstregs,
unsigned complexity, unsigned uid)
@@ -639,7 +639,7 @@
Dstregs(dstregs), AddedComplexity(complexity), ID(uid) {}
Record *SrcRecord; // Originating Record for the pattern.
- ListInit *Predicates; // Top level predicate conditions to match.
+ const ListInit *Predicates; // Top level predicate conditions to match.
TreePatternNode *SrcPattern; // Source pattern to match.
TreePatternNode *DstPattern; // Resulting pattern.
std::vector<Record*> Dstregs; // Physical register defs being matched.
@@ -647,7 +647,7 @@
unsigned ID; // Unique ID for the record.
Record *getSrcRecord() const { return SrcRecord; }
- ListInit *getPredicates() const { return Predicates; }
+ const ListInit *getPredicates() const { return Predicates; }
TreePatternNode *getSrcPattern() const { return SrcPattern; }
TreePatternNode *getDstPattern() const { return DstPattern; }
const std::vector<Record*> &getDstRegs() const { return Dstregs; }