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Old fork of llvm-mirror, used on older RPCS3 builds
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b835f3446f
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Philip Reames b835f3446f Remove dead zero store to calloc initialized memory 
Optimize the following IR:

%1 = tail call noalias i8* @calloc(i64 1, i64 4)
%2 = bitcast i8* %1 to i32*
; This store is dead and should be removed
store i32 0, i32* %2, align 4

Memory returned by calloc is guaranteed to be zero initialized. If the value being stored is the constant zero (and the store is not otherwise observable across threads), we can delete the store.  If the store is to an out of bounds address, it is undefined and thus also removable.

Reviewed By: nicholas

Differential Revision: http://reviews.llvm.org/D3942




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214897 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-05 17:48:20 +00:00
autoconf [autoconf] Fixup s/3.5/3.6/. Clang's ident was 3.5.0svn in autoconf build. 2014-07-29 08:35:03 +00:00
bindings [OCaml] Add Llvm.{string_of_const,const_element}. 2014-08-03 23:54:22 +00:00
cmake Emit a warning if llvm_map_components_to_libraries() is used noting that its 2014-07-28 13:36:50 +00:00
docs Remove the TargetMachine forwards for TargetSubtargetInfo based 2014-08-04 21:25:23 +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 [AVX512] Add masking variant and intrinsics for valignd/q 2014-08-05 17:23:04 +00:00
lib Remove dead zero store to calloc initialized memory 2014-08-05 17:48:20 +00:00
projects [cmake] Use the external project machinery for libcxxabi so that it can 2014-07-25 10:27:40 +00:00
test Remove dead zero store to calloc initialized memory 2014-08-05 17:48:20 +00:00
tools Remove the TargetMachine forwards for TargetSubtargetInfo based 2014-08-04 21:25:23 +00:00
unittests Fix SmallDenseMap assignment operator. 2014-08-04 22:18:25 +00:00
utils Remove the TargetMachine forwards for TargetSubtargetInfo based 2014-08-04 21:25:23 +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 Fix building with in-tree libc++abi on FreeBSD 2014-08-01 19:23:15 +00:00
CODE_OWNERS.TXT Add a sentence that all entries should include an email address. 2014-08-04 19:33:25 +00:00
configure [autoconf] Fixup s/3.5/3.6/. Clang's ident was 3.5.0svn in autoconf build. 2014-07-29 08:35:03 +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.