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LLVM backend for 6502
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e13b87c08d
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Hal Finkel e13b87c08d Reenable use of TBAA during CodeGen 
We had disabled use of TBAA during CodeGen (even when otherwise using AA)
because the ptrtoint/inttoptr used by CGP for address sinking caused BasicAA to
miss basic type punning that it should catch (and, thus, we'd fail to override
TBAA when we should).

However, when AA is in use during CodeGen, CGP now uses normal GEPs and
bitcasts, instead of ptrtoint/inttoptr, when doing address sinking. As a
result, BasicAA should be able to make us do the right thing in the face of
type-punning, and it seems safe to enable use of TBAA again. self-hosting seems
fine on PPC64/Linux on the P7, with TBAA enabled and -misched=shuffle.

Note: We still don't update TBAA when merging stack slots, although because
BasicAA should now catch all such cases, this is no longer a blocking issue.
Nevertheless, I plan to commit code to deal with this properly in the near
future.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206093 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-12 01:26:00 +00:00
autoconf ARM64: initial backend import 2014-03-29 10:18:08 +00:00
bindings
cmake AddLLVM: Mute the prefix "lib" in SHARED on win32. 2014-04-10 15:47:04 +00:00
docs blockfreq: Document BlockFrequencyInfo terminology 2014-04-11 23:21:07 +00:00
examples Fix warnings about an variable only used in asserts. 2014-03-06 06:35:46 +00:00
include blockfreq: Rename BlockProbInfoT to BranchProbabilityInfoT 2014-04-11 23:21:04 +00:00
lib Reenable use of TBAA during CodeGen 2014-04-12 01:26:00 +00:00
projects Remove projects/sample. 2014-03-12 22:40:22 +00:00
test Reenable use of TBAA during CodeGen 2014-04-12 01:26:00 +00:00
tools [yaml2obj][ELF] ELF Relocations Support. 2014-04-11 04:13:39 +00:00
unittests YAMLIO: Allow scalars to dictate quotation rules 2014-04-10 07:37:33 +00:00
utils When a CHECK-NEXT fails because there was no match on the next line, include 2014-04-07 17:09:53 +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
.gitignore Remove projects/sample. 2014-03-12 22:40:22 +00:00
CMakeLists.txt Add ability to disable building LLVM utils 2014-04-02 22:49:58 +00:00
CODE_OWNERS.TXT ARM Linux support 2014-04-02 23:03:28 +00:00
configure ARM64: initial backend import 2014-03-29 10:18:08 +00:00
CREDITS.TXT Test commit. 2014-04-10 22:25:51 +00:00
LICENSE.TXT Remove projects/sample. 2014-03-12 22:40:22 +00:00
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 --enable-clang-plugin-support option to configure. 2014-03-10 16:58:35 +00:00
Makefile.rules Use -std=gnu++11 on cygwin and mingw. 2014-03-12 20:01:15 +00:00
README.txt

README.txt 

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

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