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llvm-mirror/include/llvm/IR/IRPrintingPasses.h
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

85 lines
2.9 KiB
C++

//===- IRPrintingPasses.h - Passes to print out IR constructs ---*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
/// \file
///
/// This file defines passes to print out IR in various granularities. The
/// PrintModulePass pass simply prints out the entire module when it is
/// executed. The PrintFunctionPass class is designed to be pipelined with
/// other FunctionPass's, and prints out the functions of the module as they
/// are processed.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_IR_IRPRINTINGPASSES_H
#define LLVM_IR_IRPRINTINGPASSES_H
#include "llvm/IR/PassManager.h"
#include <string>
namespace llvm {
class raw_ostream;
class StringRef;
/// Create and return a pass that writes the module to the specified
/// \c raw_ostream.
ModulePass *createPrintModulePass(raw_ostream &OS,
const std::string &Banner = "",
bool ShouldPreserveUseListOrder = false);
/// Create and return a pass that prints functions to the specified
/// \c raw_ostream as they are processed.
FunctionPass *createPrintFunctionPass(raw_ostream &OS,
const std::string &Banner = "");
/// Print out a name of an LLVM value without any prefixes.
///
/// The name is surrounded with ""'s and escaped if it has any special or
/// non-printable characters in it.
void printLLVMNameWithoutPrefix(raw_ostream &OS, StringRef Name);
/// Return true if a pass is for IR printing.
bool isIRPrintingPass(Pass *P);
/// Pass for printing a Module as LLVM's text IR assembly.
///
/// Note: This pass is for use with the new pass manager. Use the create...Pass
/// functions above to create passes for use with the legacy pass manager.
class PrintModulePass : public PassInfoMixin<PrintModulePass> {
raw_ostream &OS;
std::string Banner;
bool ShouldPreserveUseListOrder;
public:
PrintModulePass();
PrintModulePass(raw_ostream &OS, const std::string &Banner = "",
bool ShouldPreserveUseListOrder = false);
PreservedAnalyses run(Module &M, AnalysisManager<Module> &);
static bool isRequired() { return true; }
};
/// Pass for printing a Function as LLVM's text IR assembly.
///
/// Note: This pass is for use with the new pass manager. Use the create...Pass
/// functions above to create passes for use with the legacy pass manager.
class PrintFunctionPass : public PassInfoMixin<PrintFunctionPass> {
raw_ostream &OS;
std::string Banner;
public:
PrintFunctionPass();
PrintFunctionPass(raw_ostream &OS, const std::string &Banner = "");
PreservedAnalyses run(Function &F, AnalysisManager<Function> &);
static bool isRequired() { return true; }
};
} // namespace llvm
#endif