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path: root/lib/Transforms/Instrumentation/AddressSanitizer.cpp
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2013-03-18[asan] when creating string constants, set unnamed_attr and align 1 so that ↵Kostya Serebryany
equal strings are merged by the linker. Observed up to 1% binary size reduction. Thanks to Anton Korobeynikov for the suggestion git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177264 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-18[asan] while generating the description of a global variable, emit the ↵Kostya Serebryany
module name in a separate field, thus not duplicating this information if every description. This decreases the binary size (observed up to 3%). https://code.google.com/p/address-sanitizer/issues/detail?id=168 . This changes the asan API version. llvm-part git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177254 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-18[asan] don't instrument functions with available_externally linkage. This ↵Kostya Serebryany
saves a bit of compile time and reduces the number of redundant global strings generated by asan (https://code.google.com/p/address-sanitizer/issues/detail?id=167) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177250 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[ASan] emit instrumentation for initialization order checking by defaultAlexey Samsonov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177063 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-26Unify clang/llvm attributes for asan/tsan/msan (LLVM part)Kostya Serebryany
These are two related changes (one in llvm, one in clang). LLVM: - rename address_safety => sanitize_address (the enum value is the same, so we preserve binary compatibility with old bitcode) - rename thread_safety => sanitize_thread - rename no_uninitialized_checks -> sanitize_memory CLANG: - add __attribute__((no_sanitize_address)) as a synonym for __attribute__((no_address_safety_analysis)) - add __attribute__((no_sanitize_thread)) - add __attribute__((no_sanitize_memory)) for S in address thread memory If -fsanitize=S is present and __attribute__((no_sanitize_S)) is not set llvm attribute sanitize_S git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176075 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-20[asan] instrument invoke insns with noreturn attribute (as well as call insns)Kostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175617 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-19[asan] instrument memory accesses with unusual sizesKostya Serebryany
This patch makes asan instrument memory accesses with unusual sizes (e.g. 5 bytes or 10 bytes), e.g. long double or packed structures. Instrumentation is done with two 1-byte checks (first and last bytes) and if the error is found __asan_report_load_n(addr, real_size) or __asan_report_store_n(addr, real_size) is called. Also, call these two new functions in memset/memcpy instrumentation. asan-rt part will follow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175507 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-18[asan] revert r175266 as it breaks code with packed structures. supporting ↵Kostya Serebryany
long double will require a more general solution git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175442 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-15[asan] support long double on 64-bit. See ↵Kostya Serebryany
https://code.google.com/p/address-sanitizer/issues/detail?id=151 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175266 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-13[asan] fix confusing indentationKostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175033 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-12[ASan] Do not use kDefaultShort64bitShadowOffset on Mac, where the binaries ↵Alexander Potapenko
may get mapped at 0x100000000+ and thus may interleave with the shadow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174964 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-12[asan] change the default mapping offset on x86_64 to 0x7fff8000. This gives ↵Kostya Serebryany
roughly 5% speedup. Since this is an ABI change, bump the asan ABI version by renaming __asan_init to __asan_init_v1. llvm part, compiler-rt part will follow git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174957 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-11[asan] added a flag -mllvm asan-short-64bit-mapping-offset=1 (0 by default)Kostya Serebryany
This flag makes asan use a small (<2G) offset for 64-bit asan shadow mapping. On x86_64 this saves us a register, thus achieving ~2/3 of the zero-base-offset's benefits in both performance and code size. Thanks Jakub Jelinek for the idea. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174886 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-24[asan] fix 32-bit buildsKostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173338 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-24[asan] adaptive redzones for globals (the larger the global the larger is ↵Kostya Serebryany
the redzone) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173335 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-23[asan] use ADD instead of OR when applying shadow offset of PowerPC. See ↵Kostya Serebryany
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55975 for details git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173258 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-19Sort all of the includes. Several files got checked in with mis-sortedChandler Carruth
includes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172891 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-18Move Blacklist.h to include/ to enable use from clang.Will Dietz
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172806 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-17ASan: add optional 'zero-based shadow' option to ASan passes. Always tell ↵Alexey Samsonov
the values of shadow scale and offset to the runtime git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172709 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16ASan: wrap mapping scale and offset in a struct and make it a member of ASan ↵Alexey Samsonov
passes. Add test for non-default mapping scale and offset. No functionality change git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172610 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-02Move all of the header files which are involved in modelling the LLVM IRChandler Carruth
into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-02Resort the #include lines in include/... and lib/... with theChandler Carruth
utils/sort_includes.py script. Most of these are updating the new R600 target and fixing up a few regressions that have creeped in since the last time I sorted the includes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171362 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-30Remove the Function::getFnAttributes method in favor of using the AttributeSetBill Wendling
directly. This is in preparation for removing the use of the 'Attribute' class as a collection of attributes. That will shift to the AttributeSet class instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171253 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-27[ASan] Fix lifetime intrinsics handling. Now for each intrinsic we check if ↵Alexey Samsonov
it describes one of 'interesting' allocas. Assume that allocas can go through casts and phi-nodes before apperaring as llvm.lifetime arguments git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171153 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-25ASan: initialize callbacks from ASan module pass in a separate function for ↵Alexey Samsonov
consistency git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171061 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-25ASan: move stack poisoning logic into FunctionStackPoisoner structAlexey Samsonov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171060 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-19Rename the 'Attributes' class to 'Attribute'. It's going to represent a ↵Bill Wendling
single attribute in the future. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170502 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12Improve debug info generated with enabled AddressSanitizer.Alexey Samsonov
When ASan replaces <alloca instruction> with <offset into a common large alloca>, it should also patch llvm.dbg.declare calls and replace debug info descriptors to mark that we've replaced alloca with a value that stores an address of the user variable, not the user variable itself. See PR11818 for more context. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169984 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04[asan] add experimental -asan-realign-stack option (true by default, which ↵Kostya Serebryany
does not change the current behavior) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169216 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04ASan: add initial support for handling llvm.lifetime intrinsics in ASan - ↵Alexey Samsonov
emit calls into runtime library that poison memory for local variables when their lifetime is over and unpoison memory when their lifetime begins. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169200 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03ASan: add blacklist file to ASan pass options. Clang patch for this will follow.Alexey Samsonov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169143 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03Use the new script to sort the includes of every file under lib.Chandler Carruth
Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30[asan] simplify the code around doesNotReturn call. It now magically works. Kostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168995 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[ASan] Simplify check added in r168861. Bail out from module pass early if ↵Alexey Samsonov
the module is blacklisted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168913 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29Add options to AddressSanitizer passes to make them configurable by frontend.Alexey Samsonov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168910 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[asan/tsan] initialize the asan/tsan callbacks in runOnFunction as opposed ↵Kostya Serebryany
to doInitialization. This is required to allow the upcoming changes in PassManager behavior git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168864 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[asan] when checking the noreturn attribute on the call, also check it on ↵Kostya Serebryany
the callee git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168861 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-28[asan] Split AddressSanitizer into two passes (FunctionPass, ModulePass), ↵Kostya Serebryany
LLVM part. This requires a clang part which will follow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168781 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-22llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp: Prune ↵NAKAMURA Takumi
AddressSanitizerCreateGlobalRedzonesPass::ID. [-Wunused-variable] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168499 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-22[asan] rip off the creation of global redzones from the main ↵Kostya Serebryany
AddressSanitizer class into a separate class. The intent is to make it a separate ModulePass in the following commmits git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168484 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-20[asan] use names of globals instead of an external set to distinguish the ↵Kostya Serebryany
globals generated by asan git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168368 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-20[asan] don't instrument linker-initialized globals even with external ↵Kostya Serebryany
linkage in -asan-initialization-order mode git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168367 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-20[asan] make sure that linker-initialized globals (non-extern) are not ↵Kostya Serebryany
instrumented even in -asan-initialization-order mode. This time with a test git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168366 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-07[asan] fix bug 14277 (asan needs to fail with fata error if an __asan ↵Kostya Serebryany
interface function is being redefined. Before this fix asan asserts) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167529 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-02Fix whitespacesAlexey Samsonov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167295 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-01[asan] don't instrument globals that we've created ourselves (reduces the ↵Kostya Serebryany
binary size a bit) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167230 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-01Revert the majority of the next patch in the address space series:Chandler Carruth
r165941: Resubmit the changes to llvm core to update the functions to support different pointer sizes on a per address space basis. Despite this commit log, this change primarily changed stuff outside of VMCore, and those changes do not carry any tests for correctness (or even plausibility), and we have consistently found questionable or flat out incorrect cases in these changes. Most of them are probably correct, but we need to devise a system that makes it more clear when we have handled the address space concerns correctly, and ideally each pass that gets updated would receive an accompanying test case that exercises that pass specificaly w.r.t. alternate address spaces. However, from this commit, I have retained the new C API entry points. Those were an orthogonal change that probably should have been split apart, but they seem entirely good. In several places the changes were very obvious cleanups with no actual multiple address space code added; these I have not reverted when I spotted them. In a few other places there were merge conflicts due to a cleaner solution being implemented later, often not using address spaces at all. In those cases, I've preserved the new code which isn't address space dependent. This is part of my ongoing effort to clean out the partial address space code which carries high risk and low test coverage, and not likely to be finished before the 3.2 release looms closer. Duncan and I would both like to see the above issues addressed before we return to these changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167222 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19Move SplitBlockAndInsertIfThen to BasicBlockUtils.Evgeniy Stepanov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166278 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19[asan] make sure asan erases old unused allocas after it created a new one. ↵Kostya Serebryany
This became important after the recent move from ModulePass to FunctionPass because no cleanup is happening after asan pass any more. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166267 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-17[asan] better debug diagnostics in asan compiler moduleKostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166102 91177308-0d34-0410-b5e6-96231b3b80d8
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