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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- ADCE.h - Aggressive dead code elimination ----------------*- C++ -*-===// |
| 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 | // This file provides the interface for the Aggressive Dead Code Elimination |
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| 10 | // pass. This pass optimistically assumes that all instructions are dead until |
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| 11 | // proven otherwise, allowing it to eliminate dead computations that other DCE |
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| 12 | // passes do not catch, particularly involving loop computations. |
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| 13 | // |
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| 14 | //===----------------------------------------------------------------------===// |
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| 15 | |||
| 16 | #ifndef LLVM_TRANSFORMS_SCALAR_ADCE_H |
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| 17 | #define LLVM_TRANSFORMS_SCALAR_ADCE_H |
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| 18 | |||
| 19 | #include "llvm/IR/PassManager.h" |
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| 20 | |||
| 21 | namespace llvm { |
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| 22 | |||
| 23 | class Function; |
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| 24 | |||
| 25 | /// A DCE pass that assumes instructions are dead until proven otherwise. |
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| 26 | /// |
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| 27 | /// This pass eliminates dead code by optimistically assuming that all |
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| 28 | /// instructions are dead until proven otherwise. This allows it to eliminate |
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| 29 | /// dead computations that other DCE passes do not catch, particularly involving |
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| 30 | /// loop computations. |
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| 31 | struct ADCEPass : PassInfoMixin<ADCEPass> { |
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| 32 | PreservedAnalyses run(Function &F, FunctionAnalysisManager &); |
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| 33 | }; |
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| 34 | |||
| 35 | } // end namespace llvm |
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| 36 | |||
| 37 | #endif // LLVM_TRANSFORMS_SCALAR_ADCE_H |