| 1 | //===-- AnnotateConstant.cpp ----------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // #include "PassDetail.h" |
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| 10 | #include "flang/Optimizer/Dialect/FIRDialect.h" |
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| 11 | #include "flang/Optimizer/Dialect/FIROps.h" |
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| 12 | #include "flang/Optimizer/Transforms/Passes.h" |
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| 13 | #include "mlir/IR/BuiltinAttributes.h" |
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| 14 | |
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| 15 | namespace fir { |
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| 16 | #define GEN_PASS_DEF_ANNOTATECONSTANTOPERANDS |
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| 17 | #include "flang/Optimizer/Transforms/Passes.h.inc" |
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| 18 | } // namespace fir |
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| 19 | |
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| 20 | #define DEBUG_TYPE "flang-annotate-constant" |
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| 21 | |
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| 22 | using namespace fir; |
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| 23 | |
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| 24 | namespace { |
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| 25 | struct AnnotateConstantOperands |
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| 26 | : public impl::AnnotateConstantOperandsBase<AnnotateConstantOperands> { |
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| 27 | void runOnOperation() override { |
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| 28 | auto *context = &getContext(); |
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| 29 | mlir::Dialect *firDialect = context->getLoadedDialect("fir" ); |
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| 30 | getOperation()->walk([&](mlir::Operation *op) { |
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| 31 | // We filter out other dialects even though they may undergo merging of |
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| 32 | // non-equal constant values by the canonicalizer as well. |
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| 33 | if (op->getDialect() == firDialect) { |
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| 34 | llvm::SmallVector<mlir::Attribute> attrs; |
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| 35 | bool hasOneOrMoreConstOpnd = false; |
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| 36 | for (mlir::Value opnd : op->getOperands()) { |
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| 37 | if (auto constOp = mlir::dyn_cast_or_null<mlir::arith::ConstantOp>( |
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| 38 | opnd.getDefiningOp())) { |
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| 39 | attrs.push_back(constOp.getValue()); |
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| 40 | hasOneOrMoreConstOpnd = true; |
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| 41 | } else if (auto addrOp = mlir::dyn_cast_or_null<fir::AddrOfOp>( |
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| 42 | opnd.getDefiningOp())) { |
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| 43 | attrs.push_back(addrOp.getSymbol()); |
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| 44 | hasOneOrMoreConstOpnd = true; |
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| 45 | } else { |
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| 46 | attrs.push_back(mlir::UnitAttr::get(context)); |
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| 47 | } |
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| 48 | } |
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| 49 | if (hasOneOrMoreConstOpnd) |
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| 50 | op->setAttr("canonicalize_constant_operands" , |
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| 51 | mlir::ArrayAttr::get(context, attrs)); |
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| 52 | } |
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| 53 | }); |
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| 54 | } |
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| 55 | }; |
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| 56 | |
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| 57 | } // namespace |
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| 58 | |
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| 59 | std::unique_ptr<mlir::Pass> fir::createAnnotateConstantOperandsPass() { |
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| 60 | return std::make_unique<AnnotateConstantOperands>(); |
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| 61 | } |
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| 62 | |
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