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can be used by both the new pass manager and the old. This removes it from any of the virtual mess of the pass interfaces and lets it derive cleanly from the DominatorTreeBase<> template. In turn, tons of boilerplate interface can be nuked and it turns into a very straightforward extension of the base DominatorTree interface. The old analysis pass is now a simple wrapper. The names and style of this split should match the split between CallGraph and CallGraphWrapperPass. All of the users of DominatorTree have been updated to match using many of the same tricks as with CallGraph. The goal is that the common type remains the resulting DominatorTree rather than the pass. This will make subsequent work toward the new pass manager significantly easier. Also in numerous places things became cleaner because I switched from re-running the pass (!!! mid way through some other passes run!!!) to directly recomputing the domtree. llvm-svn: 199104
47 lines
1.6 KiB
C++
47 lines
1.6 KiB
C++
//===- GraphPrinters.cpp - DOT printers for various graph types -----------===//
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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 several printers for various different types of graphs used
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// by the LLVM infrastructure. It uses the generic graph interface to convert
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// the graph into a .dot graph. These graphs can then be processed with the
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// "dot" tool to convert them to postscript or some other suitable format.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/Dominators.h"
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#include "llvm/Pass.h"
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// DomInfoPrinter Pass
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//===----------------------------------------------------------------------===//
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namespace {
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class DomInfoPrinter : public FunctionPass {
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public:
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static char ID; // Pass identification, replacement for typeid
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DomInfoPrinter() : FunctionPass(ID) {}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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AU.addRequired<DominatorTreeWrapperPass>();
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}
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virtual bool runOnFunction(Function &F) {
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getAnalysis<DominatorTreeWrapperPass>().dump();
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return false;
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}
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};
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}
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char DomInfoPrinter::ID = 0;
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static RegisterPass<DomInfoPrinter>
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DIP("print-dom-info", "Dominator Info Printer", true, true);
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