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llvm-mirror/lib/CodeGen/MachineFunctionPrinterPass.cpp
Arthur Eubanks 5bc5d5ec44 [NewPM] Support --print-before/after in NPM
This changes --print-before/after to be a list of strings rather than
legacy passes. (this also has the effect of not showing the entire list
of passes in --help-hidden after --print-before/after, which IMO is
great for making it less verbose).

Currently PrintIRInstrumentation passes the class name rather than pass
name to llvm::shouldPrintBeforePass(), meaning
llvm::shouldPrintBeforePass() never functions as intended in the NPM.
There is no easy way of converting class names to pass names outside of
within an instance of PassBuilder.

This adds a map of pass class names to their short names in
PassRegistry.def within PassInstrumentationCallbacks. It is populated
inside the constructor of PassBuilder, which takes a
PassInstrumentationCallbacks.

Add a pointer to PassInstrumentationCallbacks inside
PrintIRInstrumentation and use the newly created map.

This is a bit hacky, but I can't think of a better way since the short
id to class name only exists within PassRegistry.def. This also doesn't
handle passes not in PassRegistry.def but rather added via
PassBuilder::registerPipelineParsingCallback().

llvm/test/CodeGen/Generic/print-after.ll doesn't seem very useful now
with this change.

Reviewed By: ychen, jamieschmeiser

Differential Revision: https://reviews.llvm.org/D87216
2020-12-03 16:52:14 -08:00

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2.3 KiB
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//===-- MachineFunctionPrinterPass.cpp ------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// MachineFunctionPrinterPass implementation.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/SlotIndexes.h"
#include "llvm/IR/PrintPasses.h"
#include "llvm/InitializePasses.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
namespace {
/// MachineFunctionPrinterPass - This is a pass to dump the IR of a
/// MachineFunction.
///
struct MachineFunctionPrinterPass : public MachineFunctionPass {
static char ID;
raw_ostream &OS;
const std::string Banner;
MachineFunctionPrinterPass() : MachineFunctionPass(ID), OS(dbgs()) { }
MachineFunctionPrinterPass(raw_ostream &os, const std::string &banner)
: MachineFunctionPass(ID), OS(os), Banner(banner) {}
StringRef getPassName() const override { return "MachineFunction Printer"; }
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
AU.addUsedIfAvailable<SlotIndexes>();
MachineFunctionPass::getAnalysisUsage(AU);
}
bool runOnMachineFunction(MachineFunction &MF) override {
if (!isFunctionInPrintList(MF.getName()))
return false;
OS << "# " << Banner << ":\n";
MF.print(OS, getAnalysisIfAvailable<SlotIndexes>());
return false;
}
};
char MachineFunctionPrinterPass::ID = 0;
}
char &llvm::MachineFunctionPrinterPassID = MachineFunctionPrinterPass::ID;
INITIALIZE_PASS(MachineFunctionPrinterPass, "machineinstr-printer",
"Machine Function Printer", false, false)
namespace llvm {
/// Returns a newly-created MachineFunction Printer pass. The
/// default banner is empty.
///
MachineFunctionPass *createMachineFunctionPrinterPass(raw_ostream &OS,
const std::string &Banner){
return new MachineFunctionPrinterPass(OS, Banner);
}
}