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Chandler Carruth fe40a5a3de [PM] Fix a nasty bug in the new PM where we failed to properly
invalidation of analyses when merging SCCs.

While I've added a bunch of testing of this, it takes something much
more like the inliner to really trigger this as you need to have
partially-analyzed SCCs with updates at just the right time. So I've
added a direct test for this using the inliner and verifying the
domtree. Without the changes here, this test ends up finding a stale
dominator tree.

However, to handle this properly, we need to invalidate analyses
*before* merging the SCCs. After talking to Philip and Sanjoy about this
they convinced me this was the right approach. To do this, we need
a callback mechanism when merging SCCs so we can observe the cycle that
will be merged before the merge happens. This API update ended up being
surprisingly easy.

With this commit, the new PM passes the test-suite again. It hadn't
since MemorySSA was enabled for EarlyCSE as that also will find this bug
very quickly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307498 91177308-0d34-0410-b5e6-96231b3b80d8
2017-07-09 13:45:11 +00:00
bindings
cmake CMake: Add LLVM_UTILS_INSTALL_DIR option 2017-07-05 12:57:30 +00:00
docs Correct GFX9 processor names. 2017-07-07 03:10:01 +00:00
examples [ORC] Errorize the ORC APIs. 2017-07-07 02:59:13 +00:00
include [PM] Fix a nasty bug in the new PM where we failed to properly 2017-07-09 13:45:11 +00:00
lib [PM] Fix a nasty bug in the new PM where we failed to properly 2017-07-09 13:45:11 +00:00
projects
resources
runtimes
test [PM] Fix a nasty bug in the new PM where we failed to properly 2017-07-09 13:45:11 +00:00
tools [IR] Make use of Type::isPtrOrPtrVectorTy/isIntOrIntVectorTy/isFPOrFPVectorTy to shorten code. NFC 2017-07-09 07:04:00 +00:00
unittests [PM] Fix a nasty bug in the new PM where we failed to properly 2017-07-09 13:45:11 +00:00
utils vim: add 'builtin', 'nobuiltin', 'nonnull', and 'speculatable' to the keyword list. 2017-07-07 18:28:45 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt CMake: Add LLVM_UTILS_INSTALL_DIR option 2017-07-05 12:57:30 +00:00
CODE_OWNERS.TXT Remove the BBVectorize pass. 2017-06-30 07:09:08 +00:00
configure
CREDITS.TXT Another test commit 2017-07-01 03:24:06 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
README.txt
RELEASE_TESTERS.TXT

Low Level Virtual Machine (LLVM)
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