This pass, only available in ``opt``, printsthe SCCs of each function CFG to
standard error in a human-readable fom.
-``-print-externalfnconstants``: Print external fn callsites passed constants
-----------------------------------------------------------------------------
-
-This pass, only available in ``opt``, prints out call sites to external
-functions that are called with constant arguments. This can be useful when
-looking for standard library functions we should constant fold or handle in
-alias analyses.
-
``-print-function``: Print function to stderr
---------------------------------------------
+++ /dev/null
-//===- AnalysisWrappers.cpp - Wrappers around non-pass analyses -----------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines pass wrappers around LLVM analyses that don't make sense to
-// be passes. It provides a nice standard pass interface to these classes so
-// that they can be printed out by analyze.
-//
-// These classes are separated out of analyze.cpp so that it is more clear which
-// code is the integral part of the analyze tool, and which part of the code is
-// just making it so more passes are available.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/CallGraph.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Pass.h"
-#include "llvm/Support/raw_ostream.h"
-using namespace llvm;
-
-namespace {
- /// ExternalFunctionsPassedConstants - This pass prints out call sites to
- /// external functions that are called with constant arguments. This can be
- /// useful when looking for standard library functions we should constant fold
- /// or handle in alias analyses.
- struct ExternalFunctionsPassedConstants : public ModulePass {
- static char ID; // Pass ID, replacement for typeid
- ExternalFunctionsPassedConstants() : ModulePass(ID) {}
- bool runOnModule(Module &M) override {
- for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I) {
- if (!I->isDeclaration()) continue;
-
- bool PrintedFn = false;
- for (User *U : I->users()) {
- Instruction *UI = dyn_cast<Instruction>(U);
- if (!UI) continue;
-
- CallBase *CB = dyn_cast<CallBase>(UI);
- if (!CB)
- continue;
-
- for (auto AI = CB->arg_begin(), E = CB->arg_end(); AI != E; ++AI) {
- if (!isa<Constant>(*AI)) continue;
-
- if (!PrintedFn) {
- errs() << "Function '" << I->getName() << "':\n";
- PrintedFn = true;
- }
- errs() << *UI;
- break;
- }
- }
- }
-
- return false;
- }
-
- void getAnalysisUsage(AnalysisUsage &AU) const override {
- AU.setPreservesAll();
- }
- };
-}
-
-char ExternalFunctionsPassedConstants::ID = 0;
-static RegisterPass<ExternalFunctionsPassedConstants>
- P1("print-externalfnconstants",
- "Print external fn callsites passed constants");