fall back to explicit list of allowed linkages when instrumenting globals in asan; add a test check that asan does not touch linkonce_odr

llvm-svn: 144933

When the solver and SValBuilder cannot reason about symbolic expressions (ex: (x+1)*y ), the analyzer conjures a new symbol with no ties to the past. This helps it to recover some path-sensitivity. However, this breaks the taint propagation.

With this commit, we are going to construct the expression even if we cannot reason about it later on if an operand is tainted.

Also added some comments and asserts.

llvm-svn: 144932

Fix bug in RefCountedBase/RefCountedBaseVPTR where the reference count was accidentally copied as part of the copy constructor.  This could result in objects getting leaked because there reference count was too high.

llvm-svn: 144931

Make 'LangOptions' in CompilerInvocation a heap-allocated, reference counted object.  I discovered that llvm::RefCountedBase<T> has
a bug where the reference count is copied in the copy constructor, which means that there were cases when the CompilerInvocation
objects created by ASTUnit were actually leaked.  When I fixed that bug locally, it showed that a whole bunch of code assumed
that the LangOptions object that was part of CompilerInvocation was still alive.  By making it heap-allocated and reference counted,
we can keep it around after the CompilerInvocation object goes away.

As part of this change, change CompilerInvocation:getLangOptions() to return a pointer, acting as another clue that this
object may outlive the CompilerInvocation object.

This commit doesn't fix the CompilerInvocation leak itself.  That will come when I commit the fix to llvm::RefCountedBase<T> to
mainline LLVM.

llvm-svn: 144930

Simplify crash cleanup logic in ASTUnit::LoadFromCommandLine() by zeroing out two IntrusiveRefCnt pointers after we have assigned their respective values into fields of ASTUnit.

llvm-svn: 144929

llvm-svn: 144928

Naming could be improved.. But we should first rename the classes in the SVal hierarchy.

llvm-svn: 144927

and base-to-derived casts, and add proper handling of temporaries.

llvm-svn: 144926

preprocess/parse a header, report back with an actual module (which
may be a submodule) rather than just the name of the module.

llvm-svn: 144925

file actions have been specified.

llvm-svn: 144922

modules (obviously) describe frameworks, and understand the header
layout of frameworks.

llvm-svn: 144921

llvm-svn: 144920

Use this option with care as you would need to build the inferior(s) by hand
and build the executable(s) with the correct name(s).  This option can be used
with '-# n' to stress test certain test cases for n number of times.

An example:

[11:55:11] johnny:/Volumes/data/lldb/svn/trunk/test/python_api/value $ ls
Makefile		TestValueAPI.pyc	linked_list
TestValueAPI.py		change_values		main.c
[11:55:14] johnny:/Volumes/data/lldb/svn/trunk/test/python_api/value $ make EXE=test_with_dsym
clang -gdwarf-2 -O0  -arch x86_64   -c -o main.o main.c
clang -gdwarf-2 -O0  -arch x86_64   main.o -o "test_with_dsym"
/usr/bin/dsymutil  -o "test_with_dsym.dSYM" "test_with_dsym"
[11:55:20] johnny:/Volumes/data/lldb/svn/trunk/test/python_api/value $ cd ../..
[11:55:24] johnny:/Volumes/data/lldb/svn/trunk/test $ ./dotest.py -v -# 10 -S -f ValueAPITestCase.test_with_dsym
LLDB build dir: /Volumes/data/lldb/svn/trunk/build/Debug
LLDB-89
Path: /Volumes/data/lldb/svn/trunk
URL: https://johnny@llvm.org/svn/llvm-project/lldb/trunk
Repository Root: https://johnny@llvm.org/svn/llvm-project
Repository UUID: 91177308-0d34-0410-b5e6-96231b3b80d8
Revision: 144914
Node Kind: directory
Schedule: normal
Last Changed Author: gclayton
Last Changed Rev: 144911
Last Changed Date: 2011-11-17 09:22:31 -0800 (Thu, 17 Nov 2011)



Session logs for test failures/errors/unexpected successes will go into directory '2011-11-17-11_55_29'
Command invoked: python ./dotest.py -v -# 10 -S -f ValueAPITestCase.test_with_dsym
----------------------------------------------------------------------
Collected 1 test

1: test_with_dsym (TestValueAPI.ValueAPITestCase)
   Exercise some SBValue APIs. ... ok

----------------------------------------------------------------------
Ran 1 test in 1.163s

OK
1: test_with_dsym (TestValueAPI.ValueAPITestCase)
   Exercise some SBValue APIs. ... ok

----------------------------------------------------------------------
Ran 1 test in 0.200s

OK
1: test_with_dsym (TestValueAPI.ValueAPITestCase)
   Exercise some SBValue APIs. ... ok

----------------------------------------------------------------------
Ran 1 test in 0.198s

OK
1: test_with_dsym (TestValueAPI.ValueAPITestCase)
   Exercise some SBValue APIs. ... ok

----------------------------------------------------------------------
Ran 1 test in 0.199s

OK
1: test_with_dsym (TestValueAPI.ValueAPITestCase)
   Exercise some SBValue APIs. ... ok

----------------------------------------------------------------------
Ran 1 test in 0.239s

OK
1: test_with_dsym (TestValueAPI.ValueAPITestCase)
   Exercise some SBValue APIs. ... ok

----------------------------------------------------------------------
Ran 1 test in 1.215s

OK
1: test_with_dsym (TestValueAPI.ValueAPITestCase)
   Exercise some SBValue APIs. ... ok

----------------------------------------------------------------------
Ran 1 test in 0.105s

OK
1: test_with_dsym (TestValueAPI.ValueAPITestCase)
   Exercise some SBValue APIs. ... ok

----------------------------------------------------------------------
Ran 1 test in 0.098s

OK
1: test_with_dsym (TestValueAPI.ValueAPITestCase)
   Exercise some SBValue APIs. ... ok

----------------------------------------------------------------------
Ran 1 test in 0.195s

OK
1: test_with_dsym (TestValueAPI.ValueAPITestCase)
   Exercise some SBValue APIs. ... ok

----------------------------------------------------------------------
Ran 1 test in 1.197s

OK
[11:55:34] johnny:/Volumes/data/lldb/svn/trunk/test $ 

llvm-svn: 144919

monitoring on darwin in the host layer.

llvm-svn: 144918

We disable Polly by default and add a new option '-polly' that enables Polly.
This allows us to create an the alias

$ alias clang clang -Xclang -load -Xclang LLVMPolly.so

which loads Polly always into clang. It can now be enabled by running:

$ clang -O3 -mllvm -polly file.c

To enable it by default an alias pollycc can be create

$ alias pollycc clang -O3 -mllvm -polly

llvm-svn: 144917

file as a virtual file with the stored modification time and size.

llvm-svn: 144916

llvm-svn: 144915

llvm-svn: 144913

llvm-svn: 144911

llvm-svn: 144910

Instead we switch to the recommended getName(). This fixes compilation with
recent versions of LLVM.

llvm-svn: 144909

llvm-svn: 144908

llvm-svn: 144907

llvm-svn: 144906

Suggested by Sebastian Pop.

llvm-svn: 144905

Suggested by Sebastian Pop.

llvm-svn: 144904

llvm-svn: 144903

Suggested by Sebastian Pop.

llvm-svn: 144902

Fix suggested by Sebastian Pop.

llvm-svn: 144901

llvm-svn: 144900

- Use uppercase letters according to the LLVM coding style
- Rename functions to not include 'tiledSchedule', but just Schedule. This
  is more correct as tiling might be disabled.

llvm-svn: 144899

Style fix, noted by Sebastian Pop.

llvm-svn: 144898

llvm-svn: 144897

Fix SSE/AVX integer comparison patterns to understand that all integer vector loads are promoted to i64 vector loads so patterns need a bitconvert. Also slightly simplify the AVX2 variable shift patterns by using the predefined bitconvert pattern fragments.

llvm-svn: 144896

llvm-svn: 144888

llvm-svn: 144887

ADDs.  MaxOffs is used as a threshold to limit the size of the offset. Tradeoffs
being: (1) If we can't materialize the large constant then we'll cause fast-isel
to bail. (2) Too large of an offset can't be directly encoded in the ADD
resulting in a MOV+ADD.  Generally not a bad thing because otherwise we would
have had ADD+ADD, but on Thumb this turns into a MOVS+MOVT+ADD. Working on a fix
for that. (3) Conversely, too low of a threshold we'll miss opportunities to 
coalesce ADDs.
rdar://10412592

llvm-svn: 144886

llvm-svn: 144885

Revert r132539 for now, "My testing shows that function stat has no problem with trailing separators. (tested on Windows and Darwin)."

It caused PR10331. MSVCRT stat() cannot strip trailing '/'. (can '\')

llvm-svn: 144884

llvm-svn: 144883