experiments/STT-tensorflow
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NFC: Use a DenseSet instead of a DenseMap for DialectInterfaceCollection.

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The interfaces are looked up by dialect, which can always be retrieved from an interface instance.

PiperOrigin-RevId: 264516023
This commit is contained in:
River Riddle 2019-08-20 18:49:08 -07:00 committed by TensorFlower Gardener
parent c382d71b68
commit e9bda5601f
2 changed files with 26 additions and 7 deletions
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29
third_party/mlir/include/mlir/IR/DialectInterface.h vendored
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@ -18,9 +18,8 @@
#ifndef MLIR_IR_DIALECTINTERFACE_H
#define MLIR_IR_DIALECTINTERFACE_H
#include "mlir/IR/Dialect.h"
#include "mlir/Support/STLExtras.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DenseSet.h"
namespace mlir {
class Dialect;
@ -82,6 +81,25 @@ namespace detail {
/// This class is the base class for a collection of instances for a specific
/// interface kind.
class DialectInterfaceCollectionBase {
/// DenseMap info for dialect interfaces that allows lookup by the dialect.
struct InterfaceKeyInfo : public DenseMapInfo<const DialectInterface *> {
using DenseMapInfo<const DialectInterface *>::isEqual;
static unsigned getHashValue(Dialect *key) { return llvm::hash_value(key); }
static unsigned getHashValue(const DialectInterface *key) {
return getHashValue(key->getDialect());
}
static bool isEqual(Dialect *lhs, const DialectInterface *rhs) {
if (rhs == getEmptyKey() || rhs == getTombstoneKey())
return false;
return lhs == rhs->getDialect();
}
};
/// A set of registered dialect interface instances.
using InterfaceSetT = DenseSet<const DialectInterface *, InterfaceKeyInfo>;
public:
DialectInterfaceCollectionBase(MLIRContext *ctx, ClassID *interfaceKind);
virtual ~DialectInterfaceCollectionBase();
@ -93,12 +111,13 @@ protected:
/// Get the interface for the given dialect.
const DialectInterface *getInterfaceFor(Dialect *dialect) const {
return interfaces.lookup(dialect);
auto it = interfaces.find_as(dialect);
return it == interfaces.end() ? nullptr : *it;
}
private:
/// A map of registered dialect interface instances.
DenseMap<Dialect *, const DialectInterface *> interfaces;
/// A set of registered dialect interface instances.
InterfaceSetT interfaces;
};
} // namespace detail

4
third_party/mlir/lib/IR/Dialect.cpp vendored
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@ -137,7 +137,7 @@ DialectInterfaceCollectionBase::DialectInterfaceCollectionBase(
MLIRContext *ctx, ClassID *interfaceKind) {
for (auto *dialect : ctx->getRegisteredDialects())
if (auto *interface = dialect->getRegisteredInterface(interfaceKind))
interfaces.try_emplace(dialect, interface);
interfaces.insert(interface);
}
DialectInterfaceCollectionBase::~DialectInterfaceCollectionBase() {}
@ -146,5 +146,5 @@ DialectInterfaceCollectionBase::~DialectInterfaceCollectionBase() {}
/// is not registered.
const DialectInterface *
DialectInterfaceCollectionBase::getInterfaceFor(Operation *op) const {
return interfaces.lookup(op->getDialect());
return getInterfaceFor(op->getDialect());
}