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LLVM backend for 6502
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f5837aacd4
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Chandler Carruth f5837aacd4 Rework the rewriting of loads and stores for vector and integer allocas 
to properly handle the combinations of these with split integer loads
and stores. This essentially replaces Evan's r168227 by refactoring the
code in a different way, and trynig to mirror that refactoring in both
the load and store sides of the rewriting.

Generally speaking there was some really problematic duplicated code
here that led to poorly founded assumptions and then subtle bugs. Now
much of the code actually flows through and follows a more consistent
style and logical path. There is still a tiny bit of duplication on the
store side of things, but it is much less bad.

This also changes the logic to never re-use a load or store instruction
as that was simply too error prone in practice.

I've added a few tests (one a reduction of the one in Evan's original
patch, which happened to be the same as the report in PR14349). I'm
going to look at adding a few more tests for things I found and fixed in
passing (such as the volatile tests in the vectorizable predicate).

This patch has survived bootstrap, and modulo one bugfix survived
Duncan's test suite, but let me know if anything else explodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168346 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-20 01:12:50 +00:00
autoconf Fix a pasto. 2012-11-19 19:31:02 +00:00
bindings Fix a build error for ocaml bindings that was introduced with the TargetData --> DataLayout changes. 2012-10-19 20:36:22 +00:00
cmake CMake: Include private headers / tablegen files in generated Xcode projects. 2012-10-23 21:36:55 +00:00
docs ReST-ify some markup in the LIT document 2012-11-20 00:26:08 +00:00
examples Back out r166591, not sure why this made it through since I cancelled the command. Bleh, sorry about this! 2012-10-24 17:25:11 +00:00
include 80-column and whitespace fixups. 2012-11-20 00:15:36 +00:00
lib Rework the rewriting of loads and stores for vector and integer allocas 2012-11-20 01:12:50 +00:00
projects Few more small CellSPU removals. 2012-11-14 22:13:56 +00:00
runtime libprofile/CommonProfiling.c: Fix according to C89. 2012-11-02 01:32:02 +00:00
test Rework the rewriting of loads and stores for vector and integer allocas 2012-11-20 01:12:50 +00:00
tools MCJIT: [cygming] Give noop to __main also in RecordingMemoryManger. It is emitted in @main(). 2012-11-18 06:16:32 +00:00
unittests Allow using MemoryBuffers with yaml::Stream directly. 2012-11-19 23:21:47 +00:00
utils really fix permissions 2012-11-17 06:38:44 +00:00
.gitignore Add extra vim swap file pattern 2012-10-09 23:48:34 +00:00
CMakeLists.txt Kick off 3.3 cycle for LLVM trunk. 2012-11-17 22:01:08 +00:00
CODE_OWNERS.TXT Add myself as owner of the Hexagon backend. 2012-11-19 15:40:22 +00:00
configure Fix a pasto. 2012-11-19 19:31:02 +00:00
CREDITS.TXT Finally add myself to the credits. 2012-11-16 18:44:36 +00:00
LICENSE.TXT Few more small CellSPU removals. 2012-11-14 22:13:56 +00:00
llvm.spec.in Tidy up. s/Low Level Virtual Machine/LLVM/. 2012-01-25 22:00:23 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile [c-index-test] When building with BUILD_CLANG_ONLY=YES, include c-index-test. 2012-11-06 19:54:46 +00:00
Makefile.common [docs] Remove unsupported references to ExtraSource variable. 2012-05-15 21:32:27 +00:00
Makefile.config.in Re-enable support for --program-prefix. 2012-10-01 18:40:32 +00:00
Makefile.rules Use MACOSX_DEPLOYMENT_TARGET when it is set. <rdar://problem/12433905> 2012-10-12 21:48:14 +00:00
README.txt test commit 2012-07-11 17:34:12 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

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Please see the HTML documentation provided in docs/index.html for further
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