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Juneyoung Lee adc1951f3a [BuildLibCalls] Add noundef to allocator fns' size 
This is a patch to explicitly mark the size parameter of allocator functions like malloc/realloc/... as noundef.

For C/C++: undef can be created from reading an uninitialized variable or padding.
Calling a function with uninitialized variable is already UB.
Calling malloc with padding value is.. something that's not expected. Padding bits may appear in a coerced aggregate, which doesn't apply to malloc's size.
Therefore, malloc's size can be marked as noundef.

For transformations that introduce malloc/realloc/..: I ran LLVM unit tests with an updated Alive2 semantics, and found no regression, so it seems okay.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D97045
2021-02-23 13:58:03 +09:00
benchmarks
bindings [Go] Fix bindings/go/llvm/IRBindings.cpp 2020-12-16 10:09:58 -08:00
cmake [CMake] Don't optimize tests so much under ThinLTO 2021-02-22 15:13:49 -08:00
docs [LangRef] fix typo in assume bundle description; NFC 2021-02-22 09:30:49 -05:00
examples [Draft] [examples] Move llvm/examples/OCaml-Kaleidoscope/ to llvm-archive 2021-02-11 06:52:24 +05:30
include [JITLink] Add a getFixupAddress convenience method to Block. 2021-02-23 11:08:54 +11:00
lib [BuildLibCalls] Add noundef to allocator fns' size 2021-02-23 13:58:03 +09:00
projects llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
resources
runtimes [CMake] Delete LLVM_RUNTIME_BUILD_ID_LINK_TARGETS 2021-02-15 11:06:23 -08:00
test [BuildLibCalls] Add noundef to allocator fns' size 2021-02-23 13:58:03 +09:00
tools [obj2yaml,yaml2obj] Add NumBlocks to the BBAddrMapEntry yaml field. 2021-02-22 18:08:26 -08:00
unittests [GlobalISel] Implement narrowScalar for SADDE/SSUBE/UADDE/USUBE 2021-02-22 19:59:36 -05:00
utils [libunwind] unw_* alias fixes for ELF and Mach-O 2021-02-22 16:54:05 -08:00
.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 [cmake] Move check for libproc to config-ix.cmake 2021-02-18 10:54:27 +01:00
CODE_OWNERS.TXT Change XCore code owner. 2021-01-14 12:13:48 +00:00
configure
CREDITS.TXT [NFC] Add contributors names to CREDITS.TXT 2020-10-07 13:22:55 -04:00
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
llvm.spec.in Update structured references to the license to the new license. 2019-01-19 11:30:51 +00:00
README.txt Test commit. 2020-03-14 18:08:26 -07:00
RELEASE_TESTERS.TXT Update the list of platforms & archs 2018-12-16 14:47:16 +00:00

README.txt 

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

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

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