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Chris Lattner 1ea55cf816 This commit changes: 
1. Legalize now always promotes truncstore of i1 to i8. 
2. Remove patterns and gunk related to truncstore i1 from targets.
3. Rename the StoreXAction stuff to TruncStoreAction in TLI.
4. Make the TLI TruncStoreAction table a 2d table to handle from/to conversions.
5. Mark a wide variety of invalid truncstores as such in various targets, e.g.
   X86 currently doesn't support truncstore of any of its integer types.
6. Add legalize support for truncstores with invalid value input types.
7. Add a dag combine transform to turn store(truncate) into truncstore when
   safe.

The later allows us to compile CodeGen/X86/storetrunc-fp.ll to:

_foo:
	fldt	20(%esp)
	fldt	4(%esp)
	faddp	%st(1)
	movl	36(%esp), %eax
	fstps	(%eax)
	ret

instead of:

_foo:
	subl	$4, %esp
	fldt	24(%esp)
	fldt	8(%esp)
	faddp	%st(1)
	fstps	(%esp)
	movl	40(%esp), %eax
	movss	(%esp), %xmm0
	movss	%xmm0, (%eax)
	addl	$4, %esp
	ret

llvm-svn: 46140
 		2008-01-17 19:59:44 +00:00
..
Xcode Removing obsolete files from the Xcode project. 2007-12-31 01:45:55 +00:00
autoconf Update version to 2.3svn 2008-01-17 05:57:22 +00:00
bindings Modify Makefile.rules to allow makefiles to prepend to C.Flags and 2008-01-06 21:54:35 +00:00
docs Add description of 'llvm.trap' intrinsic. Also, minor fixes in formatting. 2008-01-15 22:31:34 +00:00
examples remove attributions from examples. 2007-12-29 20:37:57 +00:00
include This commit changes: 2008-01-17 19:59:44 +00:00
lib This commit changes: 2008-01-17 19:59:44 +00:00
projects remove attributions from the rest of the llvm makefiles. 2007-12-29 20:11:13 +00:00
runtime With this patch, the LowerGC transformation becomes the 2008-01-07 01:30:53 +00:00
test This commit changes: 2008-01-17 19:59:44 +00:00
tools - Introduces versioning macro LLVM_LTO_VERSION 2008-01-15 23:52:34 +00:00
utils Enable CBE 2008-01-17 02:10:08 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
win32 Add files to windows project files. Also include <algorithm> explicitly so that vstudio build works 2008-01-15 21:43:17 +00:00
CREDITS.TXT Update credits. 2007-12-11 09:32:07 +00:00
LICENSE.TXT Update license for current year. 2008-01-17 05:57:59 +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 Commit a piece that I missed before, patch by Alain Frisch 2008-01-15 23:27:40 +00:00
ModuleInfo.txt Update to include clean and install commands. 2007-07-20 20:54:41 +00:00
README.txt
…
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 Update version to 2.3svn 2008-01-17 05:57:22 +00:00
llvm.spec.in * llvm.spec.in: update blurb 2007-07-13 09:48:29 +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.