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68092989f3
This file lists every pass in LLVM, and is included by Pass.h, which is very popular. Every time we add, remove, or rename a pass in LLVM, it caused lots of recompilation. I found this fact by looking at this table, which is sorted by the number of times a file was changed over the last 100,000 git commits multiplied by the number of object files that depend on it in the current checkout: recompiles touches affected_files header 342380 95 3604 llvm/include/llvm/ADT/STLExtras.h 314730 234 1345 llvm/include/llvm/InitializePasses.h 307036 118 2602 llvm/include/llvm/ADT/APInt.h 213049 59 3611 llvm/include/llvm/Support/MathExtras.h 170422 47 3626 llvm/include/llvm/Support/Compiler.h 162225 45 3605 llvm/include/llvm/ADT/Optional.h 158319 63 2513 llvm/include/llvm/ADT/Triple.h 140322 39 3598 llvm/include/llvm/ADT/StringRef.h 137647 59 2333 llvm/include/llvm/Support/Error.h 131619 73 1803 llvm/include/llvm/Support/FileSystem.h Before this change, touching InitializePasses.h would cause 1345 files to recompile. After this change, touching it only causes 550 compiles in an incremental rebuild. Reviewers: bkramer, asbirlea, bollu, jdoerfert Differential Revision: https://reviews.llvm.org/D70211
93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
//===- CallPrinter.cpp - DOT printer for call graph -----------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines '-dot-callgraph', which emit a callgraph.<fnname>.dot
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// containing the call graph of a module.
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//
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// There is also a pass available to directly call dotty ('-view-callgraph').
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/CallPrinter.h"
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#include "llvm/Analysis/CallGraph.h"
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#include "llvm/Analysis/DOTGraphTraitsPass.h"
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#include "llvm/InitializePasses.h"
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using namespace llvm;
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namespace llvm {
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template <> struct DOTGraphTraits<CallGraph *> : public DefaultDOTGraphTraits {
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DOTGraphTraits(bool isSimple = false) : DefaultDOTGraphTraits(isSimple) {}
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static std::string getGraphName(CallGraph *Graph) { return "Call graph"; }
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std::string getNodeLabel(CallGraphNode *Node, CallGraph *Graph) {
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if (Function *Func = Node->getFunction())
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return Func->getName();
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return "external node";
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}
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};
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struct AnalysisCallGraphWrapperPassTraits {
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static CallGraph *getGraph(CallGraphWrapperPass *P) {
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return &P->getCallGraph();
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}
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};
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} // end llvm namespace
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namespace {
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struct CallGraphViewer
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: public DOTGraphTraitsModuleViewer<CallGraphWrapperPass, true, CallGraph *,
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AnalysisCallGraphWrapperPassTraits> {
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static char ID;
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CallGraphViewer()
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: DOTGraphTraitsModuleViewer<CallGraphWrapperPass, true, CallGraph *,
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AnalysisCallGraphWrapperPassTraits>(
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"callgraph", ID) {
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initializeCallGraphViewerPass(*PassRegistry::getPassRegistry());
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}
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};
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struct CallGraphDOTPrinter : public DOTGraphTraitsModulePrinter<
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CallGraphWrapperPass, true, CallGraph *,
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AnalysisCallGraphWrapperPassTraits> {
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static char ID;
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CallGraphDOTPrinter()
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: DOTGraphTraitsModulePrinter<CallGraphWrapperPass, true, CallGraph *,
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AnalysisCallGraphWrapperPassTraits>(
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"callgraph", ID) {
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initializeCallGraphDOTPrinterPass(*PassRegistry::getPassRegistry());
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}
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};
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} // end anonymous namespace
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char CallGraphViewer::ID = 0;
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INITIALIZE_PASS(CallGraphViewer, "view-callgraph", "View call graph", false,
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false)
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char CallGraphDOTPrinter::ID = 0;
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INITIALIZE_PASS(CallGraphDOTPrinter, "dot-callgraph",
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"Print call graph to 'dot' file", false, false)
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// Create methods available outside of this file, to use them
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// "include/llvm/LinkAllPasses.h". Otherwise the pass would be deleted by
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// the link time optimization.
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ModulePass *llvm::createCallGraphViewerPass() { return new CallGraphViewer(); }
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ModulePass *llvm::createCallGraphDOTPrinterPass() {
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return new CallGraphDOTPrinter();
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}
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