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Chandler Carruth ac8f03ddc1 Fix a miscompile in the DAG combiner. Previously, we would incorrectly try to reduce the width of this load, and would end up transforming: (truncate (lshr (sextload i48 <ptr> as i64), 32) to i32) to (truncate (zextload i32 <ptr+4> as i64) to i32) We lost the sext attached to the load while building the narrower i32 load, and replaced it with a zext because lshr always zext's the results. Instead, bail out of this combine when there is a conflict between a sextload and a zext narrowing. The rest of the DAG combiner still optimize the code down to the proper single instruction: movswl 6(...),%eax Which is exactly what we wanted. Previously we read past the end and missed the sign extension: movl 6(...), %eax llvm-svn: 169802		2012-12-11 00:36:57 +00:00
autoconf	Fix a pasto.	2012-11-19 19:31:02 +00:00
bindings	[python] Add markup option to disassembler	2012-12-01 21:57:30 +00:00
cmake	CMake: Don't run 'git svn' if there is no .git/svn directory.	2012-12-10 19:03:37 +00:00
docs	Documentation: convert ReleaseNotes.html to reST.	2012-12-09 23:14:26 +00:00
examples	Sort the #include lines of the examples/... tree.	2012-12-04 10:16:57 +00:00
include	Fall back to the selection dag isel to select tail calls.	2012-12-11 00:18:02 +00:00
lib	Fix a miscompile in the DAG combiner. Previously, we would incorrectly	2012-12-11 00:36:57 +00:00
projects	Clean up the sample include orderings, not that it really matters...	2012-12-04 10:46:21 +00:00
runtime	libprofile/CommonProfiling.c: Fix according to C89.	2012-11-02 01:32:02 +00:00
test	Fix a miscompile in the DAG combiner. Previously, we would incorrectly	2012-12-11 00:36:57 +00:00
tools	Revert r169656.	2012-12-10 21:33:45 +00:00
unittests	Reorganize FastMathFlags to be a wrapper around unsigned, and streamline some interfaces.	2012-12-09 21:12:04 +00:00
utils	Fix grammar-o.	2012-12-11 00:23:07 +00:00
.arcconfig	Add .arcconfig to the repository. Useful if someone wants to use phabricator's command line tool.	2012-12-01 12:07:58 +00:00
.gitignore	Add extra vim swap file pattern	2012-10-09 23:48:34 +00:00
CMakeLists.txt	[CMake] TARGET_TRIPLE may be internal alias of LLVM_DEFAULT_TARGET_TRIPLE.	2012-12-10 07:14:29 +00:00
CODE_OWNERS.TXT	Taking ownership of indvars/lsr.	2012-12-05 23:32:44 +00:00
configure	Fix a pasto.	2012-11-19 19:31:02 +00:00
CREDITS.TXT	Update my email address.	2012-11-29 21:17:26 +00:00
LICENSE.TXT	Few more small CellSPU removals.	2012-11-14 22:13:56 +00:00
llvm.spec.in	Tidy up. s/Low Level Virtual Machine/LLVM/.	2012-01-25 22:00:23 +00:00
LLVMBuild.txt	LLVMBuild: Introduce a common section which currently has a list of the	2011-12-12 22:45:54 +00:00
Makefile	[c-index-test] When building with BUILD_CLANG_ONLY=YES, include c-index-test.	2012-11-06 19:54:46 +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	Re-enable support for --program-prefix.	2012-10-01 18:40:32 +00:00
Makefile.rules	Use MACOSX_DEPLOYMENT_TARGET when it is set. <rdar://problem/12433905>	2012-10-12 21:48:14 +00:00
README.txt	Test commit.	2012-11-29 16:19:11 +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 HTML documentation provided in docs/index.html for further
assistance with LLVM.

If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.