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LLVM backend for 6502
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Simon Pilgrim 0d1978b813 [X86] Memory folding for commutative instructions (updated) 
This patch improves support for commutative instructions in the x86 memory folding implementation by attempting to fold a commuted version of the instruction if the original folding fails - if that folding fails as well the instruction is 're-commuted' back to its original order before returning.

Updated version of r219584 (reverted in r219595) - the commutation attempt now explicitly ensures that neither of the commuted source operands are tied to the destination operand / register, which was the source of all the regressions that occurred with the original patch attempt.

Added additional regression test case provided by Joerg Sonnenberger.

Differential Revision: http://reviews.llvm.org/D5818



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220239 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-20 22:14:22 +00:00
autoconf Initial version of Go bindings. 2014-10-16 22:48:02 +00:00
bindings Fix bashism in build.sh. 2014-10-17 02:20:40 +00:00
cmake Explain why we don't always use --gc-sections. 2014-10-20 21:37:38 +00:00
docs [llvm-symbolizer] Introduce the -dsym-hint option. 2014-10-17 00:50:19 +00:00
examples
include Try to fix GCC error about invalid use of const_cast in const version of ErrorOr::get() 2014-10-20 20:41:21 +00:00
lib [X86] Memory folding for commutative instructions (updated) 2014-10-20 22:14:22 +00:00
projects
test [X86] Memory folding for commutative instructions (updated) 2014-10-20 22:14:22 +00:00
tools Add a test that would have found the bug in r219829. 2014-10-17 01:34:23 +00:00
unittests [ADT] Add a 'find_as' operation to DenseSet. 2014-10-19 19:36:33 +00:00
utils Teach Lit to catch OSError exceptions when creating a process during the 2014-10-20 20:14:28 +00:00
.arcconfig
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.gitignore Initial version of Go bindings. 2014-10-16 22:48:02 +00:00
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CODE_OWNERS.TXT
configure Initial version of Go bindings. 2014-10-16 22:48:02 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
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Makefile.config.in Initial version of Go bindings. 2014-10-16 22:48:02 +00:00
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README.txt

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