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Bjorn Pettersson 0798093f86 Require chained analyses in BasicAA and AAResults to be transitive 
This patch fixes a bug that could result in miscompiles (at least
in an OOT target). The problem could be seen by adding checks that
the DominatorTree used in BasicAliasAnalysis and ValueTracking was
valid (e.g. by adding DT->verify() call before every DT dereference
and then running all tests in test/CodeGen).

Problem was that the LegacyPassManager calculated "last user"
incorrectly for passes such as the DominatorTree when not telling
the pass manager that there was a transitive dependency between
the different analyses. And then it could happen that an incorrect
dominator tree was used when doing alias analysis (which was a pretty
serious bug as the alias analysis result could be invalid).

Fixes: https://bugs.llvm.org/show_bug.cgi?id=48709

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D94138
2021-01-11 11:50:07 +01:00
benchmarks
bindings [Go] Fix bindings/go/llvm/IRBindings.cpp 2020-12-16 10:09:58 -08:00
cmake [CMake] Fix incorrect rpath for tests if LLVM_LOCAL_RPATH isn't set 2021-01-08 21:24:18 +02:00
docs [SimplifyCFG] Keep !dgb metadata of moved instruction, if they match. 2021-01-09 19:15:16 +00:00
examples [NFC] Reduce include files dependency and AA header cleanup (part 2). 2020-12-17 14:04:48 +03:00
include Reapply "[clang][cli] Port DiagnosticOpts to new option parsing system" 2021-01-11 10:05:53 +01:00
lib Require chained analyses in BasicAA and AAResults to be transitive 2021-01-11 11:50:07 +01:00
projects llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
resources
runtimes [OpenMP] Not set OPENMP_STANDALONE_BUILD=ON when building OpenMP along with LLVM 2021-01-10 16:46:19 -05:00
test [X86] Fix tile register spill issue. 2021-01-11 18:35:09 +08:00
tools [llvm] Drop unnecessary make_range (NFC) 2021-01-09 09:25:00 -08:00
unittests [NFC] Remove min/max functions from InstructionCost 2021-01-11 09:00:12 +00:00
utils Reapply "[clang][cli] Port DiagnosticOpts to new option parsing system" 2021-01-11 10:05:53 +01:00
.clang-format
.clang-tidy - Update .clang-tidy to ignore parameters of main like functions for naming violations in clang and llvm directory 2020-01-31 16:49:45 +00:00
.gitattributes Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore [clangd] Store index in '.cache/clangd/index' instead of '.clangd/index' 2020-07-07 14:53:45 +02:00
CMakeLists.txt Remove Python2 fallback and only advertise Python3 in the doc 2020-12-17 15:40:16 +01:00
CODE_OWNERS.TXT [CODE_OWNERS.TXT] Update to include yours truly as the TableGen owner 2020-11-12 09:49:00 -05:00
configure
CREDITS.TXT [NFC] Add contributors names to CREDITS.TXT 2020-10-07 13:22:55 -04:00
LICENSE.TXT
llvm.spec.in
README.txt Test commit. 2020-03-14 18:08:26 -07:00
RELEASE_TESTERS.TXT

README.txt 

The LLVM Compiler Infrastructure
================================

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 are writing a package for LLVM, see docs/Packaging.rst for our
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