9aeb7f035b
This patch adds lowering for IO input with vector subscripts. It defines a VectorSubscriptBox class that allow representing and working with a lowered Designator containing vector subscripts while ensuring all the subscripts expression are only lowered once. This patch is part of the upstreaming effort from fir-dev branch. Reviewed By: PeteSteinfeld Differential Revision: https://reviews.llvm.org/D121806 Co-authored-by: Jean Perier <jperier@nvidia.com> Co-authored-by: Eric Schweitz <eschweitz@nvidia.com>
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
//===- SimplifyRegionLite.cpp -- region simplification lite ---------------===//
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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 "PassDetail.h"
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#include "flang/Optimizer/Dialect/FIROps.h"
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#include "flang/Optimizer/Transforms/Passes.h"
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#include "mlir/IR/PatternMatch.h"
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#include "mlir/Pass/Pass.h"
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#include "mlir/Transforms/DialectConversion.h"
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#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
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#include "mlir/Transforms/RegionUtils.h"
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namespace {
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class SimplifyRegionLitePass
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: public fir::SimplifyRegionLiteBase<SimplifyRegionLitePass> {
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public:
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void runOnOperation() override;
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};
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class DummyRewriter : public mlir::PatternRewriter {
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public:
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DummyRewriter(mlir::MLIRContext *ctx) : mlir::PatternRewriter(ctx) {}
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};
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} // namespace
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void SimplifyRegionLitePass::runOnOperation() {
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auto op = getOperation();
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auto regions = op->getRegions();
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mlir::RewritePatternSet patterns(op.getContext());
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DummyRewriter rewriter(op.getContext());
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if (regions.empty())
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return;
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(void)mlir::eraseUnreachableBlocks(rewriter, regions);
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(void)mlir::runRegionDCE(rewriter, regions);
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}
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std::unique_ptr<mlir::Pass> fir::createSimplifyRegionLitePass() {
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return std::make_unique<SimplifyRegionLitePass>();
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}
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