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Hal Finkel b3b2aac5be Make use of the align parameter attribute for all pointer arguments 
We previously supported the align attribute on all (pointer) parameters, but we
only used it for byval parameters. However, it is completely consistent at the
IR level to treat 'align n' on all pointer parameters as an alignment
assumption on the pointer, and now we wll. Specifically, this causes
computeKnownBits to use the align attribute on all pointer parameters, not just
byval parameters. I've also added an explicit parameter attribute test for this
to test/Bitcode/attributes.ll.

And I've updated the LangRef to document the align parameter attribute (as it
turns out, it was not documented at all previously, although the byval
documentation mentioned that it could be used).

There are (at least) two benefits to doing this:
 - It allows enhancing alignment based on the pointer alignment after inlining callees.
 - It allows simplification of pointer arithmetic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213670 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-22 16:58:55 +00:00
autoconf Drop the udis86 wrapper from llvm::sys 2014-07-17 20:05:29 +00:00
bindings [OCaml] Don't truncate constants over 32 bits in Llvm.const_int. 2014-07-22 13:55:20 +00:00
cmake Export LLVM_ENABLE_RTTI and LLVM_ENABLE_EH in LLVMConfig.cmake so 2014-07-22 15:41:33 +00:00
docs Make use of the align parameter attribute for all pointer arguments 2014-07-22 16:58:55 +00:00
examples Added LLVM_ENABLE_RTTI and LLVM_ENABLE_EH options that allow RTTI and EH 2014-07-22 15:41:18 +00:00
include AVX-512: Fixed intrinsic of VSQRTPS/PD instructions. 2014-07-22 11:07:31 +00:00
lib Make use of the align parameter attribute for all pointer arguments 2014-07-22 16:58:55 +00:00
projects Remove projects/sample. 2014-03-12 22:40:22 +00:00
test Make use of the align parameter attribute for all pointer arguments 2014-07-22 16:58:55 +00:00
tools Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges." 2014-07-21 17:06:51 +00:00
unittests unittests: Actually test reverse iterators in Path tests 2014-07-16 08:18:58 +00:00
utils Add openmp to the list of tagged things. 2014-07-22 03:17:30 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.gitignore Add Polly to the ignored trees. 2014-06-25 13:13:36 +00:00
CMakeLists.txt [CMake] Introduce LLVM_SHLIB_OUTPUT_INTDIR. 2014-07-04 04:23:26 +00:00
CODE_OWNERS.TXT Make myself code owner of MCJIT. 2014-07-17 20:23:31 +00:00
configure Touch configure to force clang's config.h.in reconfiguration on the build servers 2014-06-06 10:36:38 +00:00
CREDITS.TXT Update Credits. 2014-05-29 19:59:58 +00:00
LICENSE.TXT Remove projects/sample. 2014-03-12 22:40:22 +00:00
llvm.spec.in Tidy up. s/Low Level Virtual Machine/LLVM/. 2012-01-25 22:00:23 +00:00
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
Makefile [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
Makefile.common Makefile.common: Update a description, s/Source/SOURCES/ , according to MakefileGuide.html#control-variables . 2012-12-07 01:43:23 +00:00
Makefile.config.in Track clang r213171 2014-07-16 16:50:34 +00:00
Makefile.rules [Make] Fix dependencies for td.expanded 2014-06-20 19:00:41 +00:00
README.txt Trivial test commit. 2014-04-26 19:05:45 +00:00

README.txt 

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

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, 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're writing a package for LLVM, see docs/Packaging.rst for our
suggestions.