471c976413
OperationInst derives from it. This allows eliminating some forwarding functions, other complex code handling multiple paths, and the 'isStatement' bit tracked by Operation. This is the last patch I think I can make before the big mechanical change merging Operation into OperationInst, coming next. This is step 15/n towards merging instructions and statements, NFC. PiperOrigin-RevId: 227077411
95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
//===- Value.cpp - MLIR Value Classes -------------------------------------===//
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//
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// Copyright 2019 The MLIR Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// =============================================================================
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#include "mlir/IR/Value.h"
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#include "mlir/IR/Function.h"
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#include "mlir/IR/Statements.h"
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using namespace mlir;
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/// If this value is the result of an Instruction, return the instruction
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/// that defines it.
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OperationInst *Value::getDefiningInst() {
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if (auto *result = dyn_cast<InstResult>(this))
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return result->getOwner();
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return nullptr;
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}
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/// If this value is the result of an OperationStmt, return the statement
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/// that defines it.
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OperationStmt *Value::getDefiningStmt() {
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if (auto *result = dyn_cast<StmtResult>(this))
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return result->getOwner();
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return nullptr;
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}
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Operation *Value::getDefiningOperation() {
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if (auto *inst = getDefiningInst())
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return inst;
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if (auto *stmt = getDefiningStmt())
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return stmt;
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return nullptr;
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}
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/// Return the function that this Valueis defined in.
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Function *Value::getFunction() {
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switch (getKind()) {
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case Value::Kind::BlockArgument:
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return cast<BlockArgument>(this)->getFunction();
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case Value::Kind::StmtResult:
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return getDefiningStmt()->getFunction();
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case Value::Kind::ForStmt:
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return cast<ForStmt>(this)->getFunction();
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}
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}
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//===----------------------------------------------------------------------===//
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// IROperandOwner implementation.
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//===----------------------------------------------------------------------===//
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/// Replace all uses of 'this' value with the new value, updating anything in
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/// the IR that uses 'this' to use the other value instead. When this returns
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/// there are zero uses of 'this'.
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void IRObjectWithUseList::replaceAllUsesWith(IRObjectWithUseList *newValue) {
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assert(this != newValue && "cannot RAUW a value with itself");
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while (!use_empty()) {
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use_begin()->set(newValue);
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}
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}
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/// Return the context this operation is associated with.
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MLIRContext *IROperandOwner::getContext() const {
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switch (getKind()) {
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case Kind::OperationStmt:
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return cast<OperationStmt>(this)->getContext();
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case Kind::ForStmt:
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return cast<ForStmt>(this)->getContext();
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case Kind::IfStmt:
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return cast<IfStmt>(this)->getContext();
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}
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}
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//===----------------------------------------------------------------------===//
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// BlockArgument implementation.
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//===----------------------------------------------------------------------===//
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/// Return the function that this argument is defined in.
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MLFunction *BlockArgument::getFunction() {
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if (auto *owner = getOwner())
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return owner->getFunction();
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return nullptr;
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}
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