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b246acebf4
units. This was debated back and forth a bunch, but using references is now clearly cleaner. Of all the code written using pointers thus far, in only one place did it really make more sense to have a pointer. In most cases, this just removes immediate dereferencing from the code. I think it is much better to get errors on null IR units earlier, potentially at compile time, than to delay it. Most notably, the legacy pass manager uses references for its routines and so as more and more code works with both, the use of pointers was likely to become really annoying. I noticed this when I ported the domtree analysis over and wrote the entire thing with references only to have it fail to compile. =/ It seemed better to switch now than to delay. We can, of course, revisit this is we learn that references are really problematic in the API. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225145 91177308-0d34-0410-b5e6-96231b3b80d8
89 lines
3.0 KiB
C++
89 lines
3.0 KiB
C++
//===- Verifier.h - LLVM IR Verifier ----------------------------*- C++ -*-===//
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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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// This file defines the function verifier interface, that can be used for some
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// sanity checking of input to the system, and for checking that transformations
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// haven't done something bad.
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//
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// Note that this does not provide full 'java style' security and verifications,
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// instead it just tries to ensure that code is well formed.
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//
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// To see what specifically is checked, look at the top of Verifier.cpp
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_VERIFIER_H
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#define LLVM_IR_VERIFIER_H
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#include "llvm/ADT/StringRef.h"
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#include <string>
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namespace llvm {
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class Function;
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class FunctionPass;
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class ModulePass;
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class Module;
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class PreservedAnalyses;
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class raw_ostream;
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/// \brief Check a function for errors, useful for use when debugging a
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/// pass.
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///
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/// If there are no errors, the function returns false. If an error is found,
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/// a message describing the error is written to OS (if non-null) and true is
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/// returned.
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bool verifyFunction(const Function &F, raw_ostream *OS = nullptr);
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/// \brief Check a module for errors.
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///
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/// If there are no errors, the function returns false. If an error is found,
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/// a message describing the error is written to OS (if non-null) and true is
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/// returned.
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bool verifyModule(const Module &M, raw_ostream *OS = nullptr);
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/// \brief Create a verifier pass.
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///
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/// Check a module or function for validity. This is essentially a pass wrapped
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/// around the above verifyFunction and verifyModule routines and
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/// functionality. When the pass detects a verification error it is always
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/// printed to stderr, and by default they are fatal. You can override that by
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/// passing \c false to \p FatalErrors.
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///
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/// Note that this creates a pass suitable for the legacy pass manager. It has nothing to do with \c VerifierPass.
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FunctionPass *createVerifierPass(bool FatalErrors = true);
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/// \brief Create a debug-info verifier pass.
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///
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/// Check a module for validity of debug info. This is essentially a pass
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/// wrapped around the debug-info parts of \a verifyModule(). When the pass
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/// detects a verification error it is always printed to stderr, and by default
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/// they are fatal. You can override that by passing \c false to \p
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/// FatalErrors.
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///
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/// Note that this creates a pass suitable for the legacy pass manager. It has
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/// nothing to do with \c VerifierPass.
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ModulePass *createDebugInfoVerifierPass(bool FatalErrors = true);
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class VerifierPass {
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bool FatalErrors;
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public:
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explicit VerifierPass(bool FatalErrors = true) : FatalErrors(FatalErrors) {}
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PreservedAnalyses run(Module &M);
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PreservedAnalyses run(Function &F);
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static StringRef name() { return "VerifierPass"; }
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};
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} // End llvm namespace
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#endif
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