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5c8aa950fe
source addition. Apparently the buildbots were wrong about failures. --- Add some switches helpful for debugging: -print-before=<Pass Name> Dump IR before running pass <Pass Name>. -print-before-all Dump IR before running each pass. -print-after-all Dump IR after running each pass. These are helpful when tracking down a miscompilation. It is easy to get IR dumps and do diffs on them, etc. To make this work well, add a new getPrinterPass API to Pass so that each kind of pass (ModulePass, FunctionPass, etc.) can create a Pass suitable for dumping out the kind of object the Pass works on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100249 91177308-0d34-0410-b5e6-96231b3b80d8
61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
//===-- MachineFunctionPrinterPass.cpp ------------------------------------===//
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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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// MachineFunctionPrinterPass implementation.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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namespace {
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/// MachineFunctionPrinterPass - This is a pass to dump the IR of a
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/// MachineFunction.
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///
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struct MachineFunctionPrinterPass : public MachineFunctionPass {
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static char ID;
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raw_ostream &OS;
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const std::string Banner;
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MachineFunctionPrinterPass(raw_ostream &os, const std::string &banner)
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: MachineFunctionPass(&ID), OS(os), Banner(banner) {}
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const char *getPassName() const { return "MachineFunction Printer"; }
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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MachineFunctionPass::getAnalysisUsage(AU);
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}
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bool runOnMachineFunction(MachineFunction &MF) {
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OS << "# " << Banner << ":\n";
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MF.print(OS);
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return false;
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}
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};
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char MachineFunctionPrinterPass::ID = 0;
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}
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namespace llvm {
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/// Returns a newly-created MachineFunction Printer pass. The
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/// default banner is empty.
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///
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MachineFunctionPass *createMachineFunctionPrinterPass(raw_ostream &OS,
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const std::string &Banner){
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return new MachineFunctionPrinterPass(OS, Banner);
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}
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}
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