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LLVM backend for 6502
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Jonas Paulsson 18a7c886c0 New method SDep::isNormalMemoryOrBarrier() in ScheduleDAGInstrs.cpp. 
Used to iterate over previously added memory dependencies in
adjustChainDeps() and iterateChainSucc().

SDep::isCtrl() was previously used in these places, that also gave
anti and output edges. The code may be worse if these are followed,
because MisNeedChainEdge() will conservatively return true since a
non-memory instruction has no memory operands, and a false chain dep
will be added. It is also unnecessary since all memory accesses of
interest will be reached by memory dependencies, and there is a budget
limit for the number of edges traversed.

This problem was found on an out-of-tree target with enabled alias
analysis. No test case for an in-tree target has been found.

Reviewed by Hal Finkel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225351 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-07 13:38:29 +00:00
autoconf [multilib] Add support to the autoconf build to substitute 2014-12-29 11:58:17 +00:00
bindings [OCaml] [cmake] Use LLVM_LIBRARY_DIR instead of LLVM_LIBRARY_OUTPUT_INTDIR. 2014-12-30 03:24:07 +00:00
cmake cmake: Fix 'examples' target after r225319 2015-01-06 23:52:35 +00:00
docs Change the .ll syntax for comdats and add a syntactic sugar. 2015-01-06 22:55:16 +00:00
examples Kaleidoscope: Value => Metadata 2015-01-06 23:48:22 +00:00
include New method SDep::isNormalMemoryOrBarrier() in ScheduleDAGInstrs.cpp. 2015-01-07 13:38:29 +00:00
lib New method SDep::isNormalMemoryOrBarrier() in ScheduleDAGInstrs.cpp. 2015-01-07 13:38:29 +00:00
projects
test [ARM] Add missing Tag_DIV_use tests. 2015-01-07 11:37:40 +00:00
tools [PM] Give slightly less horrible names to the utility pass templates for 2015-01-07 11:14:51 +00:00
unittests IR: Don't drop MDNode uniquing on null operands 2015-01-05 23:31:54 +00:00
utils [X86] Remove some unused TYPE enums from the disassembler. 2015-01-07 07:47:52 +00:00
.arcconfig
.clang-format
.clang-tidy Enable display of compiler diagnostics in clang-tidy by default. 2014-10-29 17:29:38 +00:00
.gitignore Initial version of Go bindings. 2014-10-16 22:48:02 +00:00
CMakeLists.txt [py3] Teach the CMake build to reject Python versions older than 2.7. 2014-12-29 19:36:05 +00:00
CODE_OWNERS.TXT Add myself as SystemZ code owner 2014-12-18 19:27:50 +00:00
configure [multilib] Add support to the autoconf build to substitute 2014-12-29 11:58:17 +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
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 [TEST-COMMIT] As per Developer Policy, Added a blank line. 2014-12-06 00:38:39 +00:00

README.txt 

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