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423 Commits

Author SHA1 Message Date
Kostya Serebryany
37cb9acac5 [tsan] typo and style (thanks to Nick Lewycky) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155986 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-02 13:12:19 +00:00
Kostya Serebryany
3f119989c3 [asan] small optimization: do not emit "x+0" instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155701 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-27 10:04:53 +00:00
Kostya Serebryany
e507922779 [tsan] Atomic support for ThreadSanitizer, patch by Dmitry Vyukov 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155698 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-27 07:31:53 +00:00
Alexander Potapenko
55cabae685 Fix issue 67 by checking that the interface functions weren't redefined in the compiled source file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155346 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-23 10:47:31 +00:00
Kostya Serebryany
2d5fdf81dc [tsan] use llvm/ADT/Statistic.h for tsan stats 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155341 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-23 08:44:59 +00:00
Kostya Serebryany
cff60c1409 [tsan] two more compile-time optimizations: 
- don't isntrument reads from constant globals.
Saves ~1.5% of instrumented instructions on CPU2006
(counting static instructions, not their execution).
- don't insrument reads from vtable (which is a global constant too).
Saves ~5%.

I did not measure the run-time impact of this,
but it is certainly non-negative.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154444 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-10 22:29:17 +00:00
Kostya Serebryany
2076af0184 [tsan] compile-time instrumentation: do not instrument a read if 
a write to the same temp follows in the same BB.
Also add stats printing.

On Spec CPU2006 this optimization saves roughly 4% of instrumented reads
(which is 3% of all instrumented accesses):
Writes            : 161216
Reads             : 446458
Reads-before-write: 18295



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154418 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-10 18:18:56 +00:00
Kostya Serebryany
52eb699220 [tsan] treat vtable pointer updates in a special way (requires tbaa); fix a bug (forgot to return true after instrumenting); make sure the tsan tests are run 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153448 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-26 17:35:03 +00:00
Kostya Serebryany
208a4ff2b5 [asan] fix one more bug related to long double 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153189 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-21 15:28:50 +00:00
Kostya Serebryany
8c0134a776 [asan] don't emit __asan_mapping_offset/__asan_mapping_scale by default -- they are currently used only for experiments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153040 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-19 16:40:35 +00:00
Kostya Serebryany
6e590e3f61 [tsan] use FunctionBlackList 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152755 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-14 23:33:24 +00:00
Kostya Serebryany
a1c4504409 [asan] rename class BlackList to FunctionBlackList and move it into a separate file -- we will need the same functionality in ThreadSanitizer 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152753 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-14 23:22:10 +00:00
Evgeniy Stepanov
d8313be410 ASan: use getTypeAllocSize instead of getTypeStoreSize. 
This change replaces getTypeStoreSize with getTypeAllocSize in AddressSanitizer
instrumentation for stack allocations.

One case where old behaviour produced undesired results is an optimization in
InstCombine pass (PromoteCastOfAllocation), which can replace  alloca(T) with
alloca(S), where S has the same AllocSize, but a smaller StoreSize. Another
case is memcpy(long double => long double), where ASan will poison bytes 10-15
of a stack-allocated long double (StoreSize  10, AllocSize 16,
sizeof(long double) = 16).

See http://llvm.org/bugs/show_bug.cgi?id=12047 for more context.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151887 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-02 10:41:08 +00:00
Kostya Serebryany
3eccaa6625 [tsan] fix compiler warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150449 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-14 00:52:07 +00:00
Kostya Serebryany
60ebb1947f ThreadSanitizer, a race detector. First LLVM commit. 
Clang patch (flags) will follow shortly.
The run-time library will also follow, but not immediately.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150423 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-13 22:50:51 +00:00
Kostya Serebryany
95e3cf44a9 [asan] unpoison the stack before every noreturn call. Fixes asan issue 37. llvm part 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150102 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-08 21:36:17 +00:00
Craig Topper
858143816d Convert assert(0) to llvm_unreachable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149967 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-07 05:05:23 +00:00
Chris Lattner
18c7f80b3e reapply the patches reverted in r149470 that reenable ConstantDataArray, 
but with a critical fix to the SelectionDAG code that optimizes copies
from strings into immediate stores: the previous code was stopping reading
string data at the first nul.  Address this by adding a new argument to
llvm::getConstantStringInfo, preserving the behavior before the patch.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149800 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-05 02:29:43 +00:00
Argyrios Kyrtzidis
91766fe066 Revert Chris' commits up to r149348 that started causing VMCoreTests unit test to fail. 
These are:

r149348
r149351
r149352
r149354
r149356
r149357
r149361
r149362
r149364
r149365

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149470 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-01 04:51:17 +00:00
Chris Lattner
6a89228fac eliminate the "string" form of ConstantArray::get, using 
ConstantDataArray::getString instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149365 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-31 06:18:43 +00:00
Kostya Serebryany
a1a8a323f4 [asan] fix the ObjC support (asan Issue #33) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149300 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-30 23:50:10 +00:00
Alexander Potapenko
8375bc9236 Fix compilation of ASan tests on OS X Lion (see http://code.google.com/p/address-sanitizer/issues/detail?id=32) 
The redzones emitted by AddressSanitizer for CFString instances confuse the linker and are of little use, so we shouldn't add them. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149243 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-30 10:40:22 +00:00
Kostya Serebryany
f1639abf1a [asan] correctly use ConstantExpr::getGetElementPtr. Catch by NAKAMURA Takumi 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149172 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-28 04:27:16 +00:00
Kostya Serebryany
0307b9a885 [asan] enable asan only for the functions that have Attribute::AddressSafety 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148846 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-24 19:34:43 +00:00
Alexander Potapenko
2587804203 Implemented AddressSanitizer::getPassName() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148697 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-23 11:22:43 +00:00
Kostya Serebryany
bcb55ce386 [asan] extend the workaround for http://llvm.org/bugs/show_bug.cgi?id=11395: don't instrument the function at all on x86_32 if it has a large asm blob 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147953 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-11 18:15:23 +00:00
Kostya Serebryany
3c7faae346 [asan] cleanup: remove the SIGILL-related code (compiler part) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147667 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-06 18:09:21 +00:00
Kostya Serebryany
a4b2b1d8fb [asan] add the name of the module to the description of a global variable. This improves the readability of global-buffer-overflow reports. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146698 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-15 22:55:55 +00:00
Kostya Serebryany
7bcfc9950b [asan] fix a bug (issue 19) where dlclose and the following mmap caused a false positive. compiler part. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146688 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-15 21:59:03 +00:00
Kostya Serebryany
bd7910d158 [asan] remove .preinit_array from the compiler module (it breaks .so builds). This should be done in the run-time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146527 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-14 00:01:51 +00:00
Kostya Serebryany
085cb8f0b9 [asan] report an error if blacklist file contains a malformed regex. fixes asan issue 17 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146503 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-13 19:34:53 +00:00
Daniel Dunbar
4ab406d7fc LLVMBuild: Remove trailing newline, which irked me. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146409 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-12 19:48:00 +00:00
Kostya Serebryany
9b02741d22 [asan] use .preinit_array only on linux 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146379 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-12 18:01:46 +00:00
Kostya Serebryany
25a8b809a0 [asan] call __asan_init from .preinit_array. This simplifies __asan_init vs malloc chicken-and-egg situation on Android and probably on other flavours of Linux. Patch by eugenis@google.com. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146284 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-09 22:09:32 +00:00
Nick Lewycky
7c06741004 Expose a switch for the new gcov format. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145880 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-06 00:29:13 +00:00
Kostya Serebryany
cc1d856d8e [asan] two minor fixes: use UnreachableInst after the neverreturn function call; use report_fatal_error when blacklist file can not be found 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145611 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-01 18:54:53 +00:00
Daniel Dunbar
d782bae970 build/CMake: Finish removal of add_llvm_library_dependencies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145420 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-29 19:25:30 +00:00
Nick Lewycky
bba40db072 Place the "cfg checksum" around a test. This was recently added in April 2011 to 
gcc, though I thought it was older (my gcc 4.4 has it as a local patch. Whoops!)
This fixes PR10589.

Also add some debugging statements.

Remove GcnoFiles, the mapping from CompilationUnit to raw_ostream. Now that we
start by iterating over each CU and descending into them, there's no need to
maintain a mapping.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145208 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-27 23:22:20 +00:00
Kostya Serebryany
d2703dec27 [asan] do not instrument threadlocal globals, this is buggy 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145092 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-23 02:10:54 +00:00
Kostya Serebryany
5a3a9c9371 [asan] workaround for reg alloc bug 11395: don't instrument functions with large chunks of inline assembler 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144962 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-18 01:41:06 +00:00
Kostya Serebryany
2e7fb2f736 quick fix: remove GlobalVariable::GlobalVariable mistakenly commited at r144933. For some reason this compiles on linux 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144936 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-17 23:37:53 +00:00
Kostya Serebryany
7cf2a04361 fall back to explicit list of allowed linkages when instrumenting globals in asan; add a test check that asan does not touch linkonce_odr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144933 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-17 23:14:59 +00:00
Kostya Serebryany
800e03f598 AddressSanitizer, first commit (compiler module only) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144758 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-16 01:35:23 +00:00
Benjamin Kramer
a7b0cb7594 Remove all remaining uses of Value::getNameStr(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144648 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-15 16:27:03 +00:00
Daniel Dunbar
a3a2dfd4a2 build: Add initial cut at LLVMBuild.txt files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143634 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-03 18:53:17 +00:00
Devang Patel
680018ff89 If simple ownership works then friendship is not required. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140169 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-20 18:48:56 +00:00
Devang Patel
16c19a155c Update GCOVLines to provide interfaces to write line table and calculate complete length. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140167 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-20 18:35:00 +00:00
Devang Patel
29d9610f23 Update comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140156 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-20 18:05:45 +00:00
Devang Patel
68155d31cd Use StringRef instead of std::string. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140154 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-20 17:55:19 +00:00
Devang Patel
865375ca7f Eliminate unnecessary copy of FileName from GCOVLines. 
GCOVLines is always accessed through a StringMap where the key is FileName.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140151 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-20 17:43:14 +00:00