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Diffstat (limited to 'contrib/llvm/include/llvm/Transforms/Scalar/ADCE.h')
| -rw-r--r-- | contrib/llvm/include/llvm/Transforms/Scalar/ADCE.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/contrib/llvm/include/llvm/Transforms/Scalar/ADCE.h b/contrib/llvm/include/llvm/Transforms/Scalar/ADCE.h new file mode 100644 index 0000000..f9bc7b7 --- /dev/null +++ b/contrib/llvm/include/llvm/Transforms/Scalar/ADCE.h @@ -0,0 +1,38 @@ +//===- ADCE.h - Aggressive dead code elimination --------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// 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/Function.h" +#include "llvm/IR/PassManager.h" + +namespace llvm { + +/// 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. +class ADCEPass { +public: + static StringRef name() { return "ADCEPass"; } + PreservedAnalyses run(Function &F); +}; +} + +#endif // LLVM_TRANSFORMS_SCALAR_ADCE_H |
