| //===-- AnnotateConstant.cpp ----------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // #include "PassDetail.h" |
| #include "flang/Optimizer/Dialect/FIRDialect.h" |
| #include "flang/Optimizer/Dialect/FIROps.h" |
| #include "flang/Optimizer/Transforms/Passes.h" |
| #include "mlir/IR/BuiltinAttributes.h" |
| |
| namespace fir { |
| #define GEN_PASS_DEF_ANNOTATECONSTANTOPERANDS |
| #include "flang/Optimizer/Transforms/Passes.h.inc" |
| } // namespace fir |
| |
| #define DEBUG_TYPE "flang-annotate-constant" |
| |
| using namespace fir; |
| |
| namespace { |
| struct AnnotateConstantOperands |
| : public impl::AnnotateConstantOperandsBase<AnnotateConstantOperands> { |
| void runOnOperation() override { |
| auto *context = &getContext(); |
| mlir::Dialect *firDialect = context->getLoadedDialect("fir"); |
| getOperation()->walk([&](mlir::Operation *op) { |
| // We filter out other dialects even though they may undergo merging of |
| // non-equal constant values by the canonicalizer as well. |
| if (op->getDialect() == firDialect) { |
| llvm::SmallVector<mlir::Attribute> attrs; |
| bool hasOneOrMoreConstOpnd = false; |
| for (mlir::Value opnd : op->getOperands()) { |
| if (auto constOp = mlir::dyn_cast_or_null<mlir::arith::ConstantOp>( |
| opnd.getDefiningOp())) { |
| attrs.push_back(constOp.getValue()); |
| hasOneOrMoreConstOpnd = true; |
| } else if (auto addrOp = mlir::dyn_cast_or_null<fir::AddrOfOp>( |
| opnd.getDefiningOp())) { |
| attrs.push_back(addrOp.getSymbol()); |
| hasOneOrMoreConstOpnd = true; |
| } else { |
| attrs.push_back(mlir::UnitAttr::get(context)); |
| } |
| } |
| if (hasOneOrMoreConstOpnd) |
| op->setAttr("canonicalize_constant_operands", |
| mlir::ArrayAttr::get(context, attrs)); |
| } |
| }); |
| } |
| }; |
| |
| } // namespace |
| |
| std::unique_ptr<mlir::Pass> fir::createAnnotateConstantOperandsPass() { |
| return std::make_unique<AnnotateConstantOperands>(); |
| } |