llvm/llvm/lib/Transforms/IPO/ForceFunctionAttrs.cpp

//===- ForceFunctionAttrs.cpp - Force function attrs for debugging --------===//
//
// 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
//
//===----------------------------------------------------------------------===//

#include "llvm/Transforms/IPO/ForceFunctionAttrs.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/LineIterator.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
usingnamespacellvm;

#define DEBUG_TYPE …

static cl::list<std::string> ForceAttributes(
    "force-attribute", cl::Hidden,
    cl::desc(
        "Add an attribute to a function. This can be a "
        "pair of 'function-name:attribute-name', to apply an attribute to a "
        "specific function. For "
        "example -force-attribute=foo:noinline. Specifying only an attribute "
        "will apply the attribute to every function in the module. This "
        "option can be specified multiple times."));

static cl::list<std::string> ForceRemoveAttributes(
    "force-remove-attribute", cl::Hidden,
    cl::desc("Remove an attribute from a function. This can be a "
             "pair of 'function-name:attribute-name' to remove an attribute "
             "from a specific function. For "
             "example -force-remove-attribute=foo:noinline. Specifying only an "
             "attribute will remove the attribute from all functions in the "
             "module. This "
             "option can be specified multiple times."));

static cl::opt<std::string> CSVFilePath(
    "forceattrs-csv-path", cl::Hidden,
    cl::desc(
        "Path to CSV file containing lines of function names and attributes to "
        "add to them in the form of `f1,attr1` or `f2,attr2=str`."));

/// If F has any forced attributes given on the command line, add them.
/// If F has any forced remove attributes given on the command line, remove
/// them. When both force and force-remove are given to a function, the latter
/// takes precedence.
static void forceAttributes(Function &F) { … }

static bool hasForceAttributes() { … }

PreservedAnalyses ForceFunctionAttrsPass::run(Module &M,
                                              ModuleAnalysisManager &) { … }