llvm-6502/unittests
Justin Bogner 981eb59138 Path: Stop claiming path::const_iterator is bidirectional
path::const_iterator claims that it's a bidirectional iterator, but it
doesn't satisfy all of the contracts for a bidirectional iterator.
For example, n3376 24.2.5 p6 says "If a and b are both dereferenceable,
then a == b if and only if *a and *b are bound to the same object",
but this doesn't work with how we stash and recreate Components.

This means that our use of reverse_iterator on this type is invalid
and leads to many of the valgrind errors we're hitting, as explained
by Tilmann Scheller here:

    http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20140728/228654.html

Instead, we admit that path::const_iterator is only an input_iterator,
and implement a second input_iterator for path::reverse_iterator (by
changing const_iterator::operator-- to reverse_iterator::operator++).
All of the uses of this just traverse once over the path in one
direction or the other anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214737 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-04 17:36:41 +00:00
..
ADT [ADT] Add a remarkbly useful little helper routine to ArrayRef for 2014-07-27 01:11:19 +00:00
Analysis AA metadata refactoring (introduce AAMDNodes) 2014-07-24 12:16:19 +00:00
Bitcode BitcodeTests: Fix LINK_COMPONENTS. 2014-08-02 00:12:54 +00:00
CodeGen DIE: Pass ownership of children via std::unique_ptr rather than raw pointer. 2014-04-25 20:00:34 +00:00
DebugInfo
ExecutionEngine [CMake] Update libdeps. 2014-07-14 05:01:53 +00:00
IR IR: Add Value::reverseUseList() 2014-08-01 23:28:49 +00:00
LineEditor [CMake] LineEditorTests: Add Support to link_components. 2014-07-24 11:44:33 +00:00
Linker [C++11] Use 'nullptr'. 2014-06-08 22:29:17 +00:00
MC [CMake] Update libdeps. 2014-07-14 05:01:53 +00:00
Option Retire llvm::array_endof in favor of non-member std::end. 2014-04-12 16:15:53 +00:00
Support Path: Stop claiming path::const_iterator is bidirectional 2014-08-04 17:36:41 +00:00
Transforms [Debug Info] add DISubroutineType and its creation takes DITypeArray. 2014-07-28 22:24:06 +00:00
CMakeLists.txt Invert the MC -> Object dependency. 2014-07-03 02:01:39 +00:00
Makefile Invert the MC -> Object dependency. 2014-07-03 02:01:39 +00:00
Makefile.unittest