| //===- ADCE.h - Aggressive dead code elimination ----------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file provides the interface for the Aggressive Dead Code Elimination |
| // pass. This pass optimistically assumes that all instructions are dead until |
| // proven otherwise, allowing it to eliminate dead computations that other DCE |
| // passes do not catch, particularly involving loop computations. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_TRANSFORMS_SCALAR_ADCE_H |
| #define LLVM_TRANSFORMS_SCALAR_ADCE_H |
| |
| #include "llvm/IR/PassManager.h" |
| |
| namespace llvm { |
| |
| class Function; |
| |
| /// A DCE pass that assumes instructions are dead until proven otherwise. |
| /// |
| /// This pass eliminates dead code by optimistically assuming that all |
| /// instructions are dead until proven otherwise. This allows it to eliminate |
| /// dead computations that other DCE passes do not catch, particularly involving |
| /// loop computations. |
| struct ADCEPass : PassInfoMixin<ADCEPass> { |
| PreservedAnalyses run(Function &F, FunctionAnalysisManager &); |
| }; |
| |
| } // end namespace llvm |
| |
| #endif // LLVM_TRANSFORMS_SCALAR_ADCE_H |
