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Dan Gohman 70b9b2f77f Don't mark scalar integer multiplication as Expand on x86, since x86 
has plain one-result scalar integer multiplication instructions.
This avoids expanding such instructions into MUL_LOHI sequences that
must be special-cased at isel time, and avoids the problem with that
code that provented memory operands from being folded.

This fixes PR1874, addressesing the most common case. The uncommon
cases of optimizing multiply-high operations will require work
in DAGCombiner.

llvm-svn: 47277
2008-02-18 17:55:26 +00:00
autoconf Remove use of ltdl 2008-02-13 17:11:39 +00:00
bindings Modify Makefile.rules to allow makefiles to prepend to C.Flags and 2008-01-06 21:54:35 +00:00
docs Clarify that 'sret' only applies to pointers, and 2008-02-18 04:19:38 +00:00
examples remove attributions from examples. 2007-12-29 20:37:57 +00:00
include Simplify caller updating using a CallSite, as 2008-02-18 17:32:13 +00:00
lib Don't mark scalar integer multiplication as Expand on x86, since x86 2008-02-18 17:55:26 +00:00
projects remove attributions from the rest of the llvm makefiles. 2007-12-29 20:11:13 +00:00
runtime Fixing the stack walker. 2008-01-24 05:16:36 +00:00
test Don't mark scalar integer multiplication as Expand on x86, since x86 2008-02-18 17:55:26 +00:00
tools Fix a missing space in the description of the find-bugs option. 2008-02-18 17:15:45 +00:00
utils Make tblgen a little smarter about constants smaller than i32. Currently, 2008-02-15 23:05:48 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
win32 Rename MRegisterInfo to TargetRegisterInfo. 2008-02-10 18:45:23 +00:00
Xcode Rename CFEBuildInstrs.html to GCCFEBuildInstrs.html. 2008-02-14 17:53:22 +00:00
build-for-llvm-top.sh Allow the configure options to be set according to the llvm-top options. 2007-08-31 19:53:42 +00:00
configure Remove use of ltdl 2008-02-13 17:11:39 +00:00
CREDITS.TXT Update credits. 2007-12-11 09:32:07 +00:00
LICENSE.TXT scoped_ptr.h was removed. 2008-02-09 22:50:06 +00:00
llvm.spec.in * llvm.spec.in: update blurb 2007-07-13 09:48:29 +00:00
Makefile remove attributions from the rest of the llvm makefiles. 2007-12-29 20:11:13 +00:00
Makefile.common remove attributions from the rest of the llvm makefiles. 2007-12-29 20:11:13 +00:00
Makefile.config.in improve compatibility with mingw, patch by Alain Frisch 2008-01-15 22:50:50 +00:00
Makefile.rules Make the check for GCC version more robust, fix shared library 2008-02-05 19:43:40 +00:00
ModuleInfo.txt Update to include clean and install commands. 2007-07-20 20:54:41 +00:00
README.txt test 2007-04-20 20:49:25 +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.