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Duncan P. N. Exon Smith 0294f639d2 IR: Drop metadata references more aggressively during teardown 
Sometimes teardown happens before the debug info graph is complete
(e.g., when clang throws an error).  In that case, `MDNode`s will still
have RAUW, so deleting constants that the `MDNode`s point at will be
relatively expensive -- it'll cause re-uniquing all up the chain (what
I've been referring to as "teardown madness").

So, drop references *before* deleting constants.  We need to drop a few
more references now: the metadata side of the metadata/value bridges
needs to be dropped off the cliff along with the rest of it (previously,
the bridges were cleaned before we did anything with the `MDNode`s).

There's no real functionality change here -- state before and after
`LLVMContextImpl::~LLVMContextImpl()` is unchanged -- so no testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226044 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-14 21:58:17 +00:00
autoconf Trunk is now 3.7.0svn 2015-01-14 17:38:03 +00:00
bindings [OCaml] Allow out-of-tree builds of LLVM bindings. 2015-01-13 12:17:56 +00:00
cmake [OCaml] Use $CAMLORIGIN, an rpath-$ORIGIN-like mechanism in OCaml. 2015-01-13 09:47:59 +00:00
docs ReleaseNotes.rst: bump version to 3.7 2015-01-14 18:07:30 +00:00
examples Manually specify the folder that Kaleidescope should reside in for CMake-produced solutions that care about such things (like MSVC). This takes the Kaleidescope target out of the root solution folder and places it into the Examples folder where it belongs. 2015-01-07 14:26:07 +00:00
include IR: Drop metadata references more aggressively during teardown 2015-01-14 21:58:17 +00:00
lib IR: Drop metadata references more aggressively during teardown 2015-01-14 21:58:17 +00:00
projects
test Don't create new comdats in CodeGen. 2015-01-14 20:55:48 +00:00
tools Fix linking of shared libraries. 2015-01-14 20:08:46 +00:00
unittests IR: Fix a use-after-free in RAUW 2015-01-14 19:56:10 +00:00
utils Don't set LD_PRELOAD to ''. It doesn't work on OpenBSD. 2015-01-14 00:39:56 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore .gitignore: add some rules for tagging programs 2015-01-10 19:11:29 +00:00
CMakeLists.txt Trunk is now 3.7.0svn 2015-01-14 17:38:03 +00:00
CODE_OWNERS.TXT Add myself as SystemZ code owner 2014-12-18 19:27:50 +00:00
configure Trunk is now 3.7.0svn 2015-01-14 17:38:03 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
Makefile.rules Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
README.txt Test commit. 2015-01-07 22:07:33 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for LLVM,
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LLVM is open source software. You may freely distribute it under the terms of
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Please see the documentation provided in docs/ for further
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If you're writing a package for LLVM, see docs/Packaging.rst for our
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