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7bf73bd378
Add a -verify-use-list-order pass, which shuffles use-list order, writes
to bitcode, reads back, and verifies that the (shuffled) order matches.
- The utility functions live in lib/IR/UseListOrder.cpp.
- Moved (and renamed) the command-line option to enable writing
use-lists, so that this pass can return early if the use-list orders
aren't being serialized.
It's not clear that this pass is the right direction long-term (perhaps
a separate tool instead?), but short-term it's a great way to test the
use-list order prototype. I've added an XFAIL-ed testcase that I'm
hoping to get working pretty quickly.
This is part of PR5680.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213945 91177308-0d34-0410-b5e6-96231b3b80d8
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
//===- llvm/IR/UseListOrder.h - LLVM Use List Order functions ---*- 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 has functions to modify the use-list order and to verify that it
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// doesn't change after serialization.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_USELISTORDER_H
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#define LLVM_IR_USELISTORDER_H
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namespace llvm {
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class Module;
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/// \brief Whether to preserve use-list ordering.
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bool shouldPreserveBitcodeUseListOrder();
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/// \brief Shuffle all use-lists in a module.
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///
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/// Adds \c SeedOffset to the default seed for the random number generator.
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void shuffleUseLists(Module &M, unsigned SeedOffset = 0);
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/// \brief Verify use-list order after serializing to bitcode.
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///
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/// \return \c true if there are no errors.
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bool verifyBitcodeUseListOrder(const Module &M);
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/// \brief Verify use-list order after serializing to assembly.
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///
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/// \return \c true if there are no errors.
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bool verifyAssemblyUseListOrder(const Module &M);
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} // end namespace llvm
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#endif
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