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LLVM backend for 6502
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Ahmed Bougacha 780a093afb Reapply "[ARM] Combine base-updating/post-incrementing vector load/stores." 
r223862 tried to also combine base-updating load/stores.
r224198 reverted it, as "it created a regression on the test-suite
on test MultiSource/Benchmarks/Ptrdist/anagram by scrambling the order
in which the words are shown."
Reapply, with a fix to ignore non-normal load/stores.
Truncstores are handled elsewhere (you can actually write a pattern for
those, whereas for postinc loads you can't, since they return two values),
but it should be possible to also combine extloads base updates, by checking
that the memory (rather than result) type is of the same size as the addend.

Original commit message:
We used to only combine intrinsics, and turn them into VLD1_UPD/VST1_UPD
when the base pointer is incremented after the load/store.

We can do the same thing for generic load/stores.

Note that we can only combine the first load/store+adds pair in
a sequence (as might be generated for a v16f32 load for instance),
because other combines turn the base pointer addition chain (each
computing the address of the next load, from the address of the last
load) into independent additions (common base pointer + this load's
offset).

Differential Revision: http://reviews.llvm.org/D6585


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224203 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-13 23:22:12 +00:00
autoconf Require python 2.7. 2014-12-12 15:29:31 +00:00
bindings Go bindings: introduce Value.ConstantAsMetadata. 2014-12-13 02:25:57 +00:00
cmake Disable --icf=safe to avoid a bug. 2014-12-12 14:28:19 +00:00
docs Require python 2.7. 2014-12-12 15:29:31 +00:00
examples Once more on the cmake build. nativecodegen->native on the dependencies. 2014-12-08 18:24:06 +00:00
include Fix Doxygen command misspellings. 2014-12-13 19:19:07 +00:00
lib Reapply "[ARM] Combine base-updating/post-incrementing vector load/stores." 2014-12-13 23:22:12 +00:00
projects [cmake] Use the external project machinery for libcxxabi so that it can 2014-07-25 10:27:40 +00:00
test Reapply "[ARM] Combine base-updating/post-incrementing vector load/stores." 2014-12-13 23:22:12 +00:00
tools Fix Doxygen command misspellings. 2014-12-13 19:19:07 +00:00
unittests IR: Don't track nullptr on metadata RAUW 2014-12-12 19:24:33 +00:00
utils Use range-based for loops. 2014-12-13 05:12:19 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.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 Adding a new option to CMake to disable C++ atexit on llvm-shlib. 2014-12-09 18:49:55 +00:00
CODE_OWNERS.TXT Tom Stellard is now the code owner for libclc. 2014-12-12 01:11:48 +00:00
configure Require python 2.7. 2014-12-12 15:29:31 +00:00
CREDITS.TXT Rise from the dead and update personal info 2014-08-25 17:51:04 +00:00
LICENSE.TXT Remove projects/sample. 2014-03-12 22:40:22 +00:00
llvm.spec.in
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
Makefile [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
Makefile.common Makefile.common: Update a description, s/Source/SOURCES/ , according to MakefileGuide.html#control-variables . 2012-12-07 01:43:23 +00:00
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

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