45 lines
1.8 KiB
C++
45 lines
1.8 KiB
C++
//===-- DoLoopHelper.cpp --------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "flang/Lower/DoLoopHelper.h"
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//===----------------------------------------------------------------------===//
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// DoLoopHelper implementation
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//===----------------------------------------------------------------------===//
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void Fortran::lower::DoLoopHelper::createLoop(
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mlir::Value lb, mlir::Value ub, mlir::Value step,
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const BodyGenerator &bodyGenerator) {
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auto lbi = builder.convertToIndexType(loc, lb);
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auto ubi = builder.convertToIndexType(loc, ub);
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assert(step && "step must be an actual Value");
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auto inc = builder.convertToIndexType(loc, step);
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auto loop = builder.create<fir::LoopOp>(loc, lbi, ubi, inc);
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auto insertPt = builder.saveInsertionPoint();
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builder.setInsertionPointToStart(loop.getBody());
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auto index = loop.getInductionVar();
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bodyGenerator(builder, index);
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builder.restoreInsertionPoint(insertPt);
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}
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void Fortran::lower::DoLoopHelper::createLoop(
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mlir::Value lb, mlir::Value ub, const BodyGenerator &bodyGenerator) {
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createLoop(lb, ub,
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builder.createIntegerConstant(loc, builder.getIndexType(), 1),
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bodyGenerator);
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}
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void Fortran::lower::DoLoopHelper::createLoop(
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mlir::Value count, const BodyGenerator &bodyGenerator) {
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auto indexType = builder.getIndexType();
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auto zero = builder.createIntegerConstant(loc, indexType, 0);
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auto one = builder.createIntegerConstant(loc, count.getType(), 1);
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auto up = builder.create<mlir::SubIOp>(loc, count, one);
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createLoop(zero, up, one, bodyGenerator);
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}
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