1 //===-- AnnotateConstant.cpp ----------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // #include "PassDetail.h" 10 #include "flang/Optimizer/Dialect/FIRDialect.h" 11 #include "flang/Optimizer/Dialect/FIROps.h" 12 #include "flang/Optimizer/Transforms/Passes.h" 13 #include "mlir/IR/BuiltinAttributes.h" 14 15 namespace fir { 16 #define GEN_PASS_DEF_ANNOTATECONSTANTOPERANDS 17 #include "flang/Optimizer/Transforms/Passes.h.inc" 18 } // namespace fir 19 20 #define DEBUG_TYPE "flang-annotate-constant" 21 22 using namespace fir; 23 24 namespace { 25 struct AnnotateConstantOperands 26 : public impl::AnnotateConstantOperandsBase<AnnotateConstantOperands> { runOnOperation__anond97b18640111::AnnotateConstantOperands27 void runOnOperation() override { 28 auto *context = &getContext(); 29 mlir::Dialect *firDialect = context->getLoadedDialect("fir"); 30 getOperation()->walk([&](mlir::Operation *op) { 31 // We filter out other dialects even though they may undergo merging of 32 // non-equal constant values by the canonicalizer as well. 33 if (op->getDialect() == firDialect) { 34 llvm::SmallVector<mlir::Attribute> attrs; 35 bool hasOneOrMoreConstOpnd = false; 36 for (mlir::Value opnd : op->getOperands()) { 37 if (auto constOp = mlir::dyn_cast_or_null<mlir::arith::ConstantOp>( 38 opnd.getDefiningOp())) { 39 attrs.push_back(constOp.getValue()); 40 hasOneOrMoreConstOpnd = true; 41 } else if (auto addrOp = mlir::dyn_cast_or_null<fir::AddrOfOp>( 42 opnd.getDefiningOp())) { 43 attrs.push_back(addrOp.getSymbol()); 44 hasOneOrMoreConstOpnd = true; 45 } else { 46 attrs.push_back(mlir::UnitAttr::get(context)); 47 } 48 } 49 if (hasOneOrMoreConstOpnd) 50 op->setAttr("canonicalize_constant_operands", 51 mlir::ArrayAttr::get(context, attrs)); 52 } 53 }); 54 } 55 }; 56 57 } // namespace 58 createAnnotateConstantOperandsPass()59std::unique_ptr<mlir::Pass> fir::createAnnotateConstantOperandsPass() { 60 return std::make_unique<AnnotateConstantOperands>(); 61 } 62