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192 Commits

Author SHA1 Message Date
Evgeniy Stepanov
b49c13cc84 [asancov] Fix coverage line info some more. 
Now it should always point to the opening brace of the function (in
-asan-coverage=1 mode).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210266 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-06-05 14:34:45 +00:00
Evgeniy Stepanov
58a20d70fa [asan] Fix coverage instrumentation with -asan-globals=0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210103 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-06-03 14:16:00 +00:00
Alexey Samsonov
f50e395308 Remove sanitizer blacklist from ASan/TSan/MSan function passes. 
Instrumentation passes now use attributes
address_safety/thread_safety/memory_safety which are added by Clang frontend.
Clang parses the blacklist file and adds the attributes accordingly.

Currently blacklist is still used in ASan module pass to disable instrumentation
for certain global variables. We should fix this as well by collecting the
set of globals we're going to instrument in Clang and passing it to ASan
in metadata (as we already do for dynamically-initialized globals and init-order
checking).

This change also removes -tsan-blacklist and -msan-blacklist LLVM commandline
flags in favor of -fsanitize-blacklist= Clang flag.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210038 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-06-02 18:08:27 +00:00
Alexey Samsonov
41dac4aa87 [ASan] Behave the same for functions w/o sanitize_address attribute and blacklisted functions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209946 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-31 00:33:05 +00:00
Alexey Samsonov
d4d04199ac Use range-based for loops in ASan, TSan and MSan 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209834 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-29 18:40:48 +00:00
Alexey Samsonov
7728610d24 [ASan] Hoist blacklisting globals from init-order checking to Clang. 
Clang knows about the sanitizer blacklist and it makes no sense to
add global to the list of llvm.asan.dynamically_initialized_globals if it
will be blacklisted in the instrumentation pass anyway. Instead, we should
do as much blacklisting as possible (if not all) in the frontend.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209790 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-29 01:44:13 +00:00
Alexey Samsonov
257670a79d Fix typo in variable name 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209784 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-29 01:10:14 +00:00
Alexey Samsonov
b18eabd2d8 [ASan] Use llvm.global_ctors to insert init-order checking calls into ASan runtime. 
Don't assume that dynamically initialized globals are all initialized from
_GLOBAL__<module_name>I_ function. Instead, scan the llvm.global_ctors and
insert poison/unpoison calls to each function there.

Patch by Nico Weber!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209780 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-29 00:51:15 +00:00
Evgeniy Stepanov
0949668398 [asancov] Don't emit extra runtime calls when compiling without coverage. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209721 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-28 09:26:46 +00:00
Evgeniy Stepanov
18b6fb9612 [asancov] Emit an initializer passing number of coverage code locations in each module. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209654 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-27 12:39:31 +00:00
Kostya Serebryany
3d150e08ae [asan] decrease asan-instrumentation-with-call-threshold from 10000 to 7000, see PR17409 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209623 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-26 11:57:16 +00:00
Kostya Serebryany
f2938bf8da [asan] properly instrument memory accesses that have small alignment (smaller than min(8,size)) by making two checks instead of one. This may slowdown some cases, e.g. long long on 32-bit or wide loads produced after loop unrolling. The benefit is higher sencitivity. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209508 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-23 11:52:07 +00:00
Evgeniy Stepanov
54952a3d0a [asan] Fix compiler warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208769 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-14 10:56:19 +00:00
Evgeniy Stepanov
eb949e0d19 [asan] Set debug location in ASan function prologue. 
Most importantly, it gives debug location info to the coverage callback.

This change also removes 2 cases of unnecessary setDebugLoc when IRBuilder
is created with the same debug location.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208767 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-14 10:30:15 +00:00
Nico Weber
9e9ec9b69c Fix ASan init function detection after clang r208128. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208141 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-06 23:17:26 +00:00
Timur Iskhodzhanov
df8640530c [ASan/Win] Fix issue 305 -- don't instrument .CRT initializer/terminator callbacks 
See https://code.google.com/p/address-sanitizer/issues/detail?id=305
Reviewed at http://reviews.llvm.org/D3607

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207968 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-05 14:28:38 +00:00
Craig Topper
8d7221ccf5 [C++] Use 'nullptr'. Transforms edition. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207196 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-25 05:29:35 +00:00
Alexander Potapenko
2820f739b2 [ASan] Move the shadow range on 32-bit iOS (and iOS Simulator) 
to 0x40000000-0x60000000 to avoid address space clash with system libraries.
The solution has been proposed by tahabekireren@gmail.com in https://code.google.com/p/address-sanitizer/issues/detail?id=210
This is also known to fix some Chromium iOS tests.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207002 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-23 17:14:45 +00:00
Evgeniy Stepanov
da2d85cfc8 Fix handling of missing DataLayout in sanitizers. 
Pass::doInitialization is supposed to return False when it did not
change the program, not when a fatal error occurs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206975 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-23 12:51:32 +00:00
Kostya Serebryany
468fabf731 [asan] Support outline instrumentation for wide types and delete dead code, patch by Yuri Gribov 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206883 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-22 11:19:45 +00:00
Chandler Carruth
7962dbdc65 [Modules] Fix potential ODR violations by sinking the DEBUG_TYPE 
definition below all of the header #include lines, lib/Transforms/...
edition.

This one is tricky for two reasons. We again have a couple of passes
that define something else before the includes as well. I've sunk their
name macros with the DEBUG_TYPE.

Also, InstCombine contains headers that need DEBUG_TYPE, so now those
headers #define and #undef DEBUG_TYPE around their code, leaving them
well formed modular headers. Fixing these headers was a large motivation
for all of these changes, as "leaky" macros of this form are hard on the
modules implementation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206844 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-22 02:55:47 +00:00
Kostya Serebryany
f161a918fb [asan] add a run-time flag detect_container_overflow=true/false 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206756 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-21 14:35:00 +00:00
Kostya Serebryany
470565b5e4 [asan] instead of inserting inline instrumentation around memset/memcpy/memmove, replace the intrinsic with __asan_memset/etc. This makes the memset/etc handling more complete and consistent with what we do in msan. It may slowdown some cases (when the intrinsic was actually inlined) and speedup other cases (when it was not inlined) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206746 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-21 11:50:42 +00:00
Kostya Serebryany
84c70a70ba [asan] temporary disable generating __asan_loadN/__asan_storeN 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206741 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-21 10:28:13 +00:00
Kostya Serebryany
215fc7d998 [asan] insert __asan_loadN/__asan_storeN as out-lined asan checks, llvm part 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206734 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-21 07:10:43 +00:00
Kostya Serebryany
40a9c0f58b [asan] one more workaround for PR17409: don't do BB-level coverage instrumentation if there are more than N (=1500) basic blocks. This makes ASanCoverage work on libjpeg_turbo/jchuff.c used by Chrome, which has 1824 BBs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206564 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-18 08:02:42 +00:00
Kostya Serebryany
8cc4741d85 [asan] add two new hidden compile-time flags for asan: asan-instrumentation-with-call-threshold and asan-memory-access-callback-prefix. This is part of the workaround for PR17409 (instrument huge functions with callbacks instead of inlined code). These flags will also help us experiment with kasan (kernel-asan) and clang 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206383 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-16 12:12:19 +00:00
David Blaikie
77cf856e56 Implement depth_first and inverse_depth_first range factory functions. 
Also updated as many loops as I could find using df_begin/idf_begin -
strangely I found no uses of idf_begin. Is that just used out of tree?

Also a few places couldn't use df_begin because either they used the
member functions of the depth first iterators or had specific ordering
constraints (I added a comment in the latter case).

Based on a patch by Jim Grosbach. (Jim - you just had iterator_range<T>
where you needed iterator_range<idf_iterator<T>>)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206016 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-11 01:50:01 +00:00
Nuno Lopes
2ca626570f remove a bunch of unused private methods 
found with a smarter version of -Wunused-member-function that I'm playwing with.
Appologies in advance if I removed someone's WIP code.

 include/llvm/CodeGen/MachineSSAUpdater.h            |    1 
 include/llvm/IR/DebugInfo.h                         |    3 
 lib/CodeGen/MachineSSAUpdater.cpp                   |   10 --
 lib/CodeGen/PostRASchedulerList.cpp                 |    1 
 lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp    |   10 --
 lib/IR/DebugInfo.cpp                                |   12 --
 lib/MC/MCAsmStreamer.cpp                            |    2 
 lib/Support/YAMLParser.cpp                          |   39 ---------
 lib/TableGen/TGParser.cpp                           |   16 ---
 lib/TableGen/TGParser.h                             |    1 
 lib/Target/AArch64/AArch64TargetTransformInfo.cpp   |    9 --
 lib/Target/ARM/ARMCodeEmitter.cpp                   |   12 --
 lib/Target/ARM/ARMFastISel.cpp                      |   84 --------------------
 lib/Target/Mips/MipsCodeEmitter.cpp                 |   11 --
 lib/Target/Mips/MipsConstantIslandPass.cpp          |   12 --
 lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp              |   21 -----
 lib/Target/NVPTX/NVPTXISelDAGToDAG.h                |    2 
 lib/Target/PowerPC/PPCFastISel.cpp                  |    1 
 lib/Transforms/Instrumentation/AddressSanitizer.cpp |    2 
 lib/Transforms/Instrumentation/BoundsChecking.cpp   |    2 
 lib/Transforms/Instrumentation/MemorySanitizer.cpp  |    1 
 lib/Transforms/Scalar/LoopIdiomRecognize.cpp        |    8 -
 lib/Transforms/Scalar/SCCP.cpp                      |    1 
 utils/TableGen/CodeEmitterGen.cpp                   |    2 
 24 files changed, 2 insertions(+), 261 deletions(-)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204560 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-23 17:09:26 +00:00
Alexander Potapenko
d68ef1a8d7 [ASan] Do not instrument globals from the llvm.metadata section. 
Fixes https://code.google.com/p/address-sanitizer/issues/detail?id=279.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204331 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-20 10:48:34 +00:00
Alexander Potapenko
670ef0236b [ASan] Fix https://code.google.com/p/address-sanitizer/issues/detail?id=274 
by ignoring globals from __TEXT,__cstring,cstring_literals during instrumenation.
Add a regression test.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203916 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-14 10:41:49 +00:00
Ahmed Charles
f4ccd11075 Replace OwningPtr<T> with std::unique_ptr<T>. 
This compiles with no changes to clang/lld/lldb with MSVC and includes
overloads to various functions which are used by those projects and llvm
which have OwningPtr's as parameters. This should allow out of tree
projects some time to move. There are also no changes to libs/Target,
which should help out of tree targets have time to move, if necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203083 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-06 05:51:42 +00:00
Chandler Carruth
67f6bf70d2 [Layering] Move InstVisitor.h into the IR library as it is pretty 
obviously coupled to the IR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203064 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-06 03:23:41 +00:00
Chandler Carruth
7cf9764966 [Layering] Move DIBuilder.h into the IR library where its implementation 
already lives.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203038 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-06 00:22:06 +00:00
Craig Topper
7b62be28cb [C++11] Add 'override' keyword to virtual methods that override their base class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202953 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-05 09:10:37 +00:00
Chandler Carruth
4bbfbdf7d7 [Modules] Move CallSite into the IR library where it belogs. It is 
abstracting between a CallInst and an InvokeInst, both of which are IR
concepts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202816 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-04 11:01:28 +00:00
Kostya Serebryany
9aef4445a3 [asan] fix a pair of silly typos 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202391 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-27 13:13:59 +00:00
Kostya Serebryany
124bbea6cd [asan] disable asan-detect-invalid-pointer-pair (was enabled by mistake) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202390 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-27 12:56:20 +00:00
Kostya Serebryany
9b3d3a96a8 [asan] *experimental* implementation of invalid-pointer-pair detector (finds when two unrelated pointers are compared or subtracted). This implementation has both false positives and false negatives and is not tuned for performance. A bug report for a proper implementation will follow. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202389 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-27 12:45:36 +00:00
Rafael Espindola
57edc9d4ff Make DataLayout a plain object, not a pass. 
Instead, have a DataLayoutPass that holds one. This will allow parts of LLVM
don't don't handle passes to also use DataLayout.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202168 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-25 17:30:31 +00:00
Rafael Espindola
ec89b9fb9e Make some DataLayout pointers const. 
No functionality change. Just reduces the noise of an upcoming patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202087 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-24 23:12:18 +00:00
Kostya Serebryany
740a00491b [asan] simplify the code that compute the shadow offset; get rid of two internal flags that allowed to override it. The tests pass, but still this change might break asan on some platform not covered by tests. If you see this, please submit a fix with a test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202033 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-24 13:40:24 +00:00
Rafael Espindola
f116e5308d Rename many DataLayout variables from TD to DL. 
I am really sorry for the noise, but the current state where some parts of the
code use TD (from the old name: TargetData) and other parts use DL makes it
hard to write a patch that changes where those variables come from and how
they are passed along.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201827 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-21 00:06:31 +00:00
Rafael Espindola
737c9f6005 Add back r201608, r201622, r201624 and r201625 
r201608 made llvm corretly handle private globals with MachO. r201622 fixed
a bug in it and r201624 and r201625 were changes for using private linkage,
assuming that llvm would do the right thing.

They all got reverted because r201608 introduced a crash in LTO. This patch
includes a fix for that. The issue was that TargetLoweringObjectFile now has
to be initialized before we can mangle names of private globals. This is
trivially true during the normal codegen pipeline (the asm printer does it),
but LTO has to do it manually.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201700 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-19 17:23:20 +00:00
Rafael Espindola
3e0d3a45e5 This reverts commit r201625 and r201624. 
Since r201608 got reverted, it is not safe to use private linkage in these cases
until it is committed back.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201688 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-19 15:49:46 +00:00
Rafael Espindola
070b5745ae Now that llvm always does the right thing with private, use it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201625 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-19 02:08:39 +00:00
Kostya Serebryany
8cab11a9f8 [asan] support for FreeBSD, LLVM part. patch by Viktor Kutuzov 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201067 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-10 07:37:04 +00:00
Alp Toker
ae43cab6ba Fix known typos 
Sweep the codebase for common typos. Includes some changes to visible function
names that were misspelt.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200018 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-24 17:20:08 +00:00
Kostya Serebryany
bd2c711cdd [asan] extend asan-coverage (still experimental). 
- add a mode for collecting per-block coverage (-asan-coverage=2).
   So far the implementation is naive (all blocks are instrumented),
   the performance overhead on top of asan could be as high as 30%.
 - Make sure the one-time calls to __sanitizer_cov are moved to function buttom,
   which in turn required to copy the original debug info into the call insn.

Here is the performance data on SPEC 2006
(train data, comparing asan with asan-coverage={0,1,2}):

                             asan+cov0     asan+cov1      diff 0-1    asan+cov2       diff 0-2      diff 1-2
       400.perlbench,        65.60,        65.80,         1.00,        76.20,         1.16,         1.16
           401.bzip2,        65.10,        65.50,         1.01,        75.90,         1.17,         1.16
             403.gcc,         1.64,         1.69,         1.03,         2.04,         1.24,         1.21
             429.mcf,        21.90,        22.60,         1.03,        23.20,         1.06,         1.03
           445.gobmk,       166.00,       169.00,         1.02,       205.00,         1.23,         1.21
           456.hmmer,        88.30,        87.90,         1.00,        91.00,         1.03,         1.04
           458.sjeng,       210.00,       222.00,         1.06,       258.00,         1.23,         1.16
      462.libquantum,         1.73,         1.75,         1.01,         2.11,         1.22,         1.21
         464.h264ref,       147.00,       152.00,         1.03,       160.00,         1.09,         1.05
         471.omnetpp,       115.00,       116.00,         1.01,       140.00,         1.22,         1.21
           473.astar,       133.00,       131.00,         0.98,       142.00,         1.07,         1.08
       483.xalancbmk,       118.00,       120.00,         1.02,       154.00,         1.31,         1.28
            433.milc,        19.80,        20.00,         1.01,        20.10,         1.02,         1.01
            444.namd,        16.20,        16.20,         1.00,        17.60,         1.09,         1.09
          447.dealII,        41.80,        42.20,         1.01,        43.50,         1.04,         1.03
          450.soplex,         7.51,         7.82,         1.04,         8.25,         1.10,         1.05
          453.povray,        14.00,        14.40,         1.03,        15.80,         1.13,         1.10
             470.lbm,        33.30,        34.10,         1.02,        34.10,         1.02,         1.00
         482.sphinx3,        12.40,        12.30,         0.99,        13.00,         1.05,         1.06


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199488 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 11:00:30 +00:00
Evgeniy Stepanov
6d49eafb00 [asan] Remove -fsanitize-address-zero-base-shadow command line 
flag from clang, and disable zero-base shadow support on all platforms
where it is not the default behavior.

- It is completely unused, as far as we know.
- It is ABI-incompatible with non-zero-base shadow, which means all
objects in a process must be built with the same setting. Failing to
do so results in a segmentation fault at runtime.
- It introduces a backward dependency of compiler-rt on user code,
which is uncommon and complicates testing.

This is the LLVM part of a larger change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199371 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-16 10:19:12 +00:00