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Jakob Stoklund Olesen c26e2e6221 Permit remat of partial register defs when it is safe. An instruction may define part of a register where the other bits are undefined. In that case, it is safe to rematerialize the instruction. For example: %vreg2:ssub_0<def> = VLDRS <cp#0>, 0, pred:14, pred:%noreg, %vreg2<imp-def> The extra <imp-def> operand indicates that the instruction does not read the other parts of the virtual register, so a remat is safe. This patch simply allows multiple def operands for the virtual register. It is MI->readsVirtualRegister() that determines if we depend on a previous value so remat is impossible. llvm-svn: 138953		2011-09-01 18:27:51 +00:00
autoconf	Update config.sub, config.guess and configure.	2011-08-23 06:43:49 +00:00
bindings	Remove the build_unwind function from the OCaml bindings.	2011-08-10 01:10:17 +00:00
cmake	CMake: [MSVC] Suppress C4551 'function call missing argument list'.	2011-08-17 01:28:30 +00:00
docs	Remove the old tail duplication pass. It is not used and is unable to update	2011-08-30 23:03:45 +00:00
examples	Move TargetRegistry and TargetSelect from Target to Support where they belong.	2011-08-24 18:08:43 +00:00
include	Remove the old tail duplication pass. It is not used and is unable to update	2011-08-30 23:03:45 +00:00
lib	Permit remat of partial register defs when it is safe.	2011-09-01 18:27:51 +00:00
projects	Fix a ton of comment typos found by codespell. Patch by	2011-04-15 05:18:47 +00:00
runtime	Use version 402 for the GCDA files when compiling for Apple.	2011-07-28 18:12:20 +00:00
test	Permit remat of partial register defs when it is safe.	2011-09-01 18:27:51 +00:00
tools	Teach macho-dump to dump the uleb128s referred to by linkedit_data segments.	2011-08-30 22:10:58 +00:00
unittests	Fix C++0x narrowing errors when char is unsigned.	2011-08-30 20:53:29 +00:00
utils	Fix up r137380 based on post-commit review by Jim Grosbach.	2011-09-01 18:02:14 +00:00
website	Prepare for "core" website.	2007-08-03 05:43:35 +00:00
.gitignore	.gitignore: Ignore /autom4te.cache. We can execute "PATH=/path/to/autotools/bin autoconf/AutoRegen.sh".	2011-08-12 07:47:50 +00:00
build-for-llvm-top.sh	Patch to build llvm with srcdir != objdir from	2009-01-23 08:42:38 +00:00
CMakeLists.txt	Added the infrastructute necessary for MIPS JIT support. Patch by Vladimir	2011-07-21 16:28:51 +00:00
configure	Update config.sub, config.guess and configure.	2011-08-23 06:43:49 +00:00
CREDITS.TXT	I am the code owner for Clang's IR generation; this has been true	2011-08-02 01:38:19 +00:00
LICENSE.TXT	Happy new year.	2011-06-12 15:26:54 +00:00
llvm.spec.in
Makefile	Install libprofile_rt.dylib where it's more available for gcov support.	2011-06-10 21:47:14 +00:00
Makefile.common	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
Makefile.config.in	build/configure: Add support for --with-extra-ld-options flag (to provide extra	2011-06-16 22:30:38 +00:00
Makefile.rules	TableGen'erated MC lowering for simple pseudo-instructions.	2011-07-08 17:36:35 +00:00
ModuleInfo.txt	Remove trailing space. This is just an excuse to poke the	2010-10-05 20:32:15 +00:00
README.txt	reverting test commit	2011-05-12 17:38:08 +00:00

README.txt

Low Level Virtual Machine (LLVM)
================================

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