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LLVM backend for 6502
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48fcc07856
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Sanjoy Das 48fcc07856 Make ScalarEvolution less aggressive with respect to no-wrap flags. 
ScalarEvolution currently lowers a subtraction recurrence to an add
recurrence with the same no-wrap flags as the subtraction.  This is
incorrect because `sub nsw X, Y` is not the same as `add nsw X, -Y`
and `sub nuw X, Y` is not the same as `add nuw X, -Y`.  This patch
fixes the issue, and adds two test cases demonstrating the bug.

Differential Revision: http://reviews.llvm.org/D7081



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226755 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-22 00:48:47 +00:00
autoconf Trunk is now 3.7.0svn 2015-01-14 17:38:03 +00:00
bindings IR: Return unique_ptr from MDNode::getTemporary() 2015-01-19 21:30:18 +00:00
cmake Don't pass -Wl,z,defs for now. 2015-01-20 22:08:20 +00:00
docs Explicitly describe '///' versus '//' comment delimiters. 2015-01-22 00:19:56 +00:00
examples Reorder. 2015-01-19 00:35:33 +00:00
include Rewrite DIExpression::Verify() using an iterator. NFC. 2015-01-22 00:00:52 +00:00
lib Make ScalarEvolution less aggressive with respect to no-wrap flags. 2015-01-22 00:48:47 +00:00
projects [cmake] Use the external project machinery for libcxxabi so that it can 2014-07-25 10:27:40 +00:00
test Make ScalarEvolution less aggressive with respect to no-wrap flags. 2015-01-22 00:48:47 +00:00
tools For llvm-objdump, hook up existing options to work when using -macho (the Mach-O parser). 2015-01-20 21:47:46 +00:00
unittests Adding a new cl::HideUnrelatedOptions API to allow clang to migrate off cl::getRegisteredOptions. 2015-01-21 22:45:52 +00:00
utils [lit] Format JSONMetricValue strings better. 2015-01-21 16:38:31 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format
.clang-tidy Enable display of compiler diagnostics in clang-tidy by default. 2014-10-29 17:29:38 +00:00
.gitignore .gitignore: add some rules for tagging programs 2015-01-10 19:11:29 +00:00
CMakeLists.txt Trunk is now 3.7.0svn 2015-01-14 17:38:03 +00:00
CODE_OWNERS.TXT Add myself as SystemZ code owner 2014-12-18 19:27:50 +00:00
configure Trunk is now 3.7.0svn 2015-01-14 17:38:03 +00:00
CREDITS.TXT Rise from the dead and update personal info 2014-08-25 17:51:04 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
Makefile.common
Makefile.config.in Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
Makefile.rules Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
README.txt Check commit access 2015-01-16 19:23:34 +00:00

README.txt 

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