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a864748284
llvm/test
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Chandler Carruth a864748284 Revert the switch of loop-idiom to use the new dependence analysis. 
The new analysis is not yet ready for prime time. It has a *critical*
flawed assumption, and some troubling shortages of testing. Until it's
been hammered into better shape, let's stick with the working code. This
should be easy to revert itself when the analysis is ready.

Fixes PR14241, a miscompile of any memcpy-able loop which uses a pointer
as the induction mechanism. If you have been seeing miscompiles in this
revision range, you really want to test with this backed out. The
results of this miscompile are a bit subtle as they can lead to
downstream passes concluding things are impossible which are in fact
possible.

Thanks to David Blaikie for the majority of the reduction of this
miscompile. I'll be checking in the test case in a non-revert commit.

Revesions reverted here:

r167045: LoopIdiom: Fix a serious missed optimization: we only turned
         top-level loops into memmove.
r166877: LoopIdiom: Add checks to avoid turning memmove into an infinite
         loop.
r166875: LoopIdiom: Recognize memmove loops.
r166874: LoopIdiom: Replace custom dependence analysis with
         DependenceAnalysis.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167286 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-02 08:33:25 +00:00
..
Analysis Remove LoopDependenceAnalysis. 2012-10-26 20:25:01 +00:00
Archive Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
Assembler Don't crash if a .ll file contains a forward-reference that looks like a global 2012-10-11 00:38:25 +00:00
Bindings/Ocaml Move TargetData to DataLayout. 2012-10-08 16:39:34 +00:00
Bitcode Change encoding of instruction operands in bitcode binaries to be relative 2012-10-11 20:20:40 +00:00
BugPoint Fix unexpected passes. These test do work with LTO on linux. I tested both 2012-10-26 02:19:02 +00:00
CodeGen test/CodeGen/X86/fp-fast.ll: Add +avx. 2012-11-01 02:13:45 +00:00
DebugInfo Make sure to generate the right kind of MDNode for enum forward declarations. 2012-10-05 01:49:14 +00:00
ExecutionEngine Align the data section correctly when loading an ELF file. 2012-10-29 10:47:07 +00:00
Feature Change ForceSizeOpt attribute into MinSize attribute 2012-10-30 16:32:52 +00:00
Instrumentation [asan] don't instrument globals that we've created ourselves (reduces the binary size a bit) 2012-11-01 13:42:40 +00:00
Integer Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
Linker Convert the uses of '|&' to use '2>&1 |' instead, which works on old 2012-07-02 18:37:59 +00:00
MC Add support for generating dwarf debugging info with assembly files 2012-11-01 17:31:35 +00:00
Object Fix SymbolRef::getAddress implementation for ELF. The 'value' field in symbol table entry should be treated differently for relocatable and relocated files. This patch fixes symbol addresses printed by llvm-nm for executables and shared objects. 2012-09-21 07:08:08 +00:00
Other Revert the series of commits starting with r166578 which introduced the 2012-11-01 08:07:29 +00:00
Scripts This allows hello world to be compiled for Mips 64 direct object. 2012-06-27 22:48:25 +00:00
TableGen Re-work bit/bits value resolving in tblgen 2012-09-06 23:32:48 +00:00
Transforms Revert the switch of loop-idiom to use the new dependence analysis. 2012-11-02 08:33:25 +00:00
Unit tests: Rip out a bunch of now unused test code relating to use of llvm-gcc in LLVM tests. 2011-10-27 20:59:26 +00:00
Verifier Assert that dominates is not given a multiple edge. Finding out if we have 2012-08-17 18:21:28 +00:00
YAMLParser Convert the uses of '|&' to use '2>&1 |' instead, which works on old 2012-07-02 18:37:59 +00:00
CMakeLists.txt [CMake] Add llvm-mcmarkup to check-llvm. 2012-11-01 02:13:50 +00:00
lit.cfg llvm/test/lit.cfg: Don't use mcjit to ppc32 yet, not ready. 2012-11-01 14:28:51 +00:00
lit.site.cfg.in test: Add a lit config variable to check if LTO is enabled. 2012-10-18 20:43:11 +00:00
Makefile test: Add a lit config variable to check if LTO is enabled. 2012-10-18 20:43:11 +00:00
Makefile.tests
TestRunner.sh