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LLVM backend for 6502
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Tilmann Scheller cca1146119 ARM: Teach assembler to enforce constraints for ARM LDRD destination register operands. 
As specified in A8.8.72/A8.8.73/A8.8.74 in the ARM ARM, all variants of the ARM LDRD instruction have the following two constraints:

LDRD<c> <Rt>, <Rt2>, ...

(a) Rt must be even-numbered and not r14
(b) Rt2 must be R(t+1)

If those two constraints are not met the result of executing the instruction will be unpredictable.

Constraint (b) was already enforced, this commit adds support for constraint (a).

Fixes rdar://14479793.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191520 91177308-0d34-0410-b5e6-96231b3b80d8
2013-09-27 13:28:17 +00:00
autoconf Remove error output from configure if CFLAGS is set (r174313). 2013-09-24 11:38:45 +00:00
bindings [python-bindings] Added support for getting/setting operands of values and getting the number of operands of a value. 2013-09-11 01:38:12 +00:00
cmake [CMake] Hack GetSVN.cmake to handle unusual terminals. 2013-09-16 21:38:01 +00:00
docs Add links to cross-compilation docs from getting started 2013-09-26 08:57:07 +00:00
examples
include [mips][msa] Implemented fill.d intrinsic. 2013-09-27 13:20:41 +00:00
lib ARM: Teach assembler to enforce constraints for ARM LDRD destination register operands. 2013-09-27 13:28:17 +00:00
projects Port the detection of zlib from the main autoconf system to the sample 2013-08-18 01:55:15 +00:00
runtime Bring back the build of libprofile_rt on Sparc. It is now working correctly. See: 2013-09-08 09:15:09 +00:00
test ARM: Teach assembler to enforce constraints for ARM LDRD destination register operands. 2013-09-27 13:28:17 +00:00
tools Revert "llvm-objdump: Dump COFF import table if -private-headers option is given." 2013-09-27 01:29:36 +00:00
unittests Fixed typo in CreateProcessTrailingSlash test 2013-09-20 18:21:59 +00:00
utils Mark the x86 machine model as incomplete. PR17367. 2013-09-25 18:14:12 +00:00
.arcconfig
.clang-format Add a clang-format file so that the tool can automatically detect the 2013-09-02 07:19:04 +00:00
.gitignore
CMakeLists.txt Set the minimal stack size with msvc when using cmake >= 2.8.11. 2013-09-25 14:06:55 +00:00
CODE_OWNERS.TXT
configure Remove error output from configure if CFLAGS is set (r174313). 2013-09-24 11:38:45 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules Makefile.rules: Avoid -fomit-frame-pointer also on cygwin due to PR14646. 2013-08-18 03:38:40 +00:00
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