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Bill Wendling 1e56a2ffb6 If we have a function like this: 
void bork() {
  int *address = 0;
  *address = 0;
}

It's compiled into LLVM code that looks like this:

define void @bork() noreturn nounwind  {
entry:
        unreachable
}

This is bad on some platforms (like PPC) because it will generate the label for
the function but no body. The label could end up being associated with some
non-code related stuff, like a section. This places a "trap" instruction if the
SimplifyCFG pass removed all code from the function leaving only one
"unreachable" instruction.

llvm-svn: 46387
2008-01-26 01:43:44 +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 Reorder a field to reduce the size of StackObject. Note that this 2008-01-25 17:49:41 +00:00
lib If we have a function like this: 2008-01-26 01:43:44 +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 If we have a function like this: 2008-01-26 01:43:44 +00:00
tools - Introduces versioning macro LLVM_LTO_VERSION 2008-01-15 23:52:34 +00:00
utils Add interator interface to DAGInit also 2008-01-22 11:00:07 +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
Xcode Removing obsolete files from the Xcode project. 2007-12-31 01:45:55 +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 Update version to 2.3svn 2008-01-17 05:57:22 +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
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 One too many )'s breaks 'make clean' with certain versions of make. 2008-01-22 05:19:26 +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.