Dimitry Andric 6a3e479401 Pull in r221709 from upstream llvm trunk (by Frédéric Riss): ... Totally forget deallocated SDNodes in SDDbgInfo. What would happen before that commit is that the SDDbgValues associated with a deallocated SDNode would be marked Invalidated, but SDDbgInfo would keep a map entry keyed by the SDNode pointer pointing to this list of invalidated SDDbgNodes. As the memory gets reused, the list might get wrongly associated with another new SDNode. As the SDDbgValues are cloned when they are transfered, this can lead to an exponential number of SDDbgValues being produced during DAGCombine like in http://llvm.org/bugs/show_bug.cgi?id=20893 Note that the previous behavior wasn't really buggy as the invalidation made sure that the SDDbgValues won't be used. This commit can be considered a memory optimization and as such is really hard to validate in a unit-test. This should fix abnormally large memory usage and resulting OOM crashes when compiling certain ports with debug information. Reported by: Dmitry Marakasov <amdmi3@amdmi3.ru> Upstream PRs: http://llvm.org/PR19031 http://llvm.org/PR20893 MFC after: 1 week		2014-11-12 20:01:10 +00:00
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llvm	Pull in r221709 from upstream llvm trunk (by Frédéric Riss):	2014-11-12 20:01:10 +00:00
llvm-c	Upgrade our copy of llvm/clang to 3.4 release. This version supports	2014-02-16 19:44:07 +00:00