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Jim Grosbach 1718345a30 Many Thumb2 instructions can reference the full ARM register set (i.e., have 4 bits per register in the operand encoding), but have undefined behavior when the operand value is 13 or 15 (SP and PC, respectively). The trivial coalescer in linear scan sometimes will merge a copy from SP into a subsequent instruction which uses the copy, and if that instruction cannot legally reference SP, we get bad code such as: mls r0,r9,r0,sp instead of: mov r2, sp mls r0, r9, r0, r2 This patch adds a new register class for use by Thumb2 that excludes the problematic registers (SP and PC) and is used instead of GPR for those operands which cannot legally reference PC or SP. The trivial coalescer explicitly requires that the register class of the destination for the COPY instruction contain the source register for the COPY to be considered for coalescing. This prevents errant instructions like that above. PR7499 llvm-svn: 109842		2010-07-30 02:41:01 +00:00
autoconf	Use a C++ compiler for the atomic builtin check since we'll	2010-07-28 20:26:34 +00:00
bindings	Implement the "linker_private_weak" linkage type. This will be used for	2010-07-01 21:55:59 +00:00
cmake	Don't link against libm and libpthread which don't exist in BeOS/Haiku. Also,	2010-06-23 06:48:34 +00:00
docs	re-commit r109220, the compile error has already been fixed	2010-07-26 18:48:07 +00:00
examples	Convert some tab stops into spaces.	2010-07-12 08:16:59 +00:00
include	remove a layer of cruft	2010-07-29 23:35:00 +00:00
lib	Many Thumb2 instructions can reference the full ARM register set (i.e.,	2010-07-30 02:41:01 +00:00
projects	Remove bogus link.	2010-07-16 06:33:36 +00:00
runtime	Delete a blank line.	2010-04-16 13:32:55 +00:00
test	Many Thumb2 instructions can reference the full ARM register set (i.e.,	2010-07-30 02:41:01 +00:00
tools	Transcribe IRC to svn. Also don't print basic block names twice if they match.	2010-07-29 18:20:13 +00:00
unittests	Remove the temporary hack, now that the llvm-i686-linux buildbot has	2010-07-29 22:55:29 +00:00
utils	Many Thumb2 instructions can reference the full ARM register set (i.e.,	2010-07-30 02:41:01 +00:00
website	Prepare for "core" website.	2007-08-03 05:43:35 +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	start straightening out libedis's dependencies and make it fit	2010-07-20 18:25:19 +00:00
configure	Regenerate.	2010-07-28 20:26:43 +00:00
CREDITS.TXT	long past time I added myself to this, I suppose.	2010-07-19 22:04:28 +00:00
LICENSE.TXT	2010 is upon us.	2010-01-09 18:40:31 +00:00
llvm.spec.in	* llvm.spec.in: update blurb	2007-07-13 09:48:29 +00:00
Makefile	Add support for a new Apple-style build target, EmbeddedSim, that builds	2010-07-20 20:44:02 +00:00
Makefile.common	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
Makefile.config.in	typo in comment, regeneration not necessary	2010-07-07 13:58:46 +00:00
Makefile.rules	Fix library build messages.	2010-07-26 20:15:47 +00:00
ModuleInfo.txt	Patch to build llvm with srcdir != objdir from	2009-01-23 08:42:38 +00:00
README.txt	(Hopefully) One last test.	2010-07-27 00:04:55 +00:00

README.txt

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

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Please see the HTML documentation provided in docs/index.html for further
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