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4cad16d76c
pass manager passes' `run` methods. This removes a bunch of SFINAE goop from the pass manager and just requires pass authors to accept `AnalysisManager<IRUnitT> &` as a dead argument. This is a small price to pay for the simplicity of the system as a whole, despite the noise that changing it causes at this stage. This will also helpfull allow us to make the signature of the run methods much more flexible for different kinds af passes to support things like intelligently updating the pass's progression over IR units. While this touches many, many, files, the changes are really boring. Mostly made with the help of my trusty perl one liners. Thanks to Sean and Hal for bouncing ideas for this with me in IRC. llvm-svn: 272978
36 lines
1.3 KiB
C++
36 lines
1.3 KiB
C++
//===- ConstantMerge.h - Merge duplicate global constants -------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the interface to a pass that merges duplicate global
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// constants together into a single constant that is shared. This is useful
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// because some passes (ie TraceValues) insert a lot of string constants into
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// the program, regardless of whether or not an existing string is available.
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//
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// Algorithm: ConstantMerge is designed to build up a map of available constants
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// and eliminate duplicates when it is initialized.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_IPO_CONSTANTMERGE_H
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#define LLVM_TRANSFORMS_IPO_CONSTANTMERGE_H
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#include "llvm/IR/Module.h"
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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/// A pass that merges duplicate global constants into a single constant.
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class ConstantMergePass : public PassInfoMixin<ConstantMergePass> {
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public:
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PreservedAnalyses run(Module &M, ModuleAnalysisManager &);
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};
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}
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#endif // LLVM_TRANSFORMS_IPO_CONSTANTMERGE_H
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