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* Revert "Adding DIImportedModules to DIScopes."David Blaikie2013-03-28
| | | | | | | | | This reverts commit 342d92c7a0adeabc9ab00f3f0d88d739fe7da4c7. Turns out we're going with a different schema design to represent DW_TAG_imported_modules so we won't need this extra field. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178215 91177308-0d34-0410-b5e6-96231b3b80d8
* Adding DIImportedModules to DIScopes.David Blaikie2013-03-27
| | | | | | | | | | | | This is just the basic groundwork for supporting DW_TAG_imported_module but I wanted to commit this before pushing support further into Clang or LLVM so that this rather churny change is isolated from the rest of the work. The major churn here is obviously adding another field (within the common DIScope prefix) to all DIScopes (files, classes, namespaces, lexical scopes, etc). This should be the last big churny change needed for DW_TAG_imported_module/using directive support/PR14606. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178099 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused field in DISubprogramDavid Blaikie2013-03-21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177661 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] when creating string constants, set unnamed_attr and align 1 so that ↵Kostya Serebryany2013-03-18
| | | | | | 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
* [asan] don't instrument functions with available_externally linkage. This ↵Kostya Serebryany2013-03-18
| | | | | | 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
* Split out filename & directory from DIFile to start generalizing over DIScopesDavid Blaikie2013-03-17
| | | | | | | | | | This is the first step to making all DIScopes have a common metadata prefix (so that things (using directives, for example) that can appear in any scope can be added to that common prefix). DIFile is itself a DIScope so the common prefix of all DIScopes cannot be a DIFile - instead it's the raw filename/directory name pair. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177239 91177308-0d34-0410-b5e6-96231b3b80d8
* [ASan] emit instrumentation for initialization order checking by defaultAlexey Samsonov2013-03-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177063 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the unused 4th operand for DIFile debug info metadataDavid Blaikie2013-03-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176983 91177308-0d34-0410-b5e6-96231b3b80d8
* Unify clang/llvm attributes for asan/tsan/msan (LLVM part)Kostya Serebryany2013-02-26
| | | | | | | | | | | | | | | | | | | | 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
* [asan] instrument invoke insns with noreturn attribute (as well as call insns)Kostya Serebryany2013-02-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175617 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] instrument memory accesses with unusual sizesKostya Serebryany2013-02-19
| | | | | | | | | | | | | | | | | | | 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
* [asan] revert r175266 as it breaks code with packed structures. supporting ↵Kostya Serebryany2013-02-18
| | | | | | 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
* [asan] support long double on 64-bit. See ↵Kostya Serebryany2013-02-15
| | | | | | 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
* [asan] fix tests for the new ABIKostya Serebryany2013-02-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174959 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] adaptive redzones for globals (the larger the global the larger is ↵Kostya Serebryany2013-01-24
| | | | | | the redzone) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173335 91177308-0d34-0410-b5e6-96231b3b80d8
* ASan: wrap mapping scale and offset in a struct and make it a member of ASan ↵Alexey Samsonov2013-01-16
| | | | | | 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
* [ASan] Fix lifetime intrinsics handling. Now for each intrinsic we check if ↵Alexey Samsonov2012-12-27
| | | | | | 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
* Improve debug info generated with enabled AddressSanitizer.Alexey Samsonov2012-12-12
| | | | | | | | | | | | | 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
* ASan: add initial support for handling llvm.lifetime intrinsics in ASan - ↵Alexey Samsonov2012-12-04
| | | | | | 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
* [asan] when checking the noreturn attribute on the call, also check it on ↵Kostya Serebryany2012-11-29
| | | | | | the callee git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168861 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] Split AddressSanitizer into two passes (FunctionPass, ModulePass), ↵Kostya Serebryany2012-11-28
| | | | | | 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
* [asan] don't instrument linker-initialized globals even with external ↵Kostya Serebryany2012-11-20
| | | | | | linkage in -asan-initialization-order mode git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168367 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] make sure that linker-initialized globals (non-extern) are not ↵Kostya Serebryany2012-11-20
| | | | | | 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
* [asan] don't instrument globals that we've created ourselves (reduces the ↵Kostya Serebryany2012-11-01
| | | | | | binary size a bit) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167230 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] make sure asan erases old unused allocas after it created a new one. ↵Kostya Serebryany2012-10-19
| | | | | | 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
* [asan] fix a testKostya Serebryany2012-10-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165938 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. ↵Sylvestre Ledru2012-09-27
| | | | | | See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164768 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a typo 'iff' => 'if'Sylvestre Ledru2012-09-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164767 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] add code to detect global initialization fiasco in C/C++. The ↵Kostya Serebryany2012-08-21
| | | | | | sub-pass is off by default for now. Patch by Reid Watson. Note: this patch changes the interface between LLVM and compiler-rt parts of asan. The corresponding patch to compiler-rt will follow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162268 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] insert crash basic blocks inline as opposed to inserting them at the ↵Kostya Serebryany2012-08-14
| | | | | | end of the function. This doesn't seem to fix or break anything, but is considered to be more friendly to downstream passes (test change) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161871 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] make sure that the crash callbacks do not get merged (Chandler's ↵Kostya Serebryany2012-07-20
| | | | | | idea: insert an empty InlineAsm). Change the order in which the new BBs are inserted: the slow path BB is insert between old BBs, the crash BB is inserted at the end. Don't create an empty BB (introduced by recent commits). Update the test. The experimental code that does manual crash callback merge will most likely be deleted later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160544 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] refactor instrumentation to allow merging the crash callbacks (not ↵Kostya Serebryany2012-07-16
| | | | | | fully implemented yet, no functionality change except the BB order) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160284 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r160254 temporarily.Chandler Carruth2012-07-16
| | | | | | | | | | | | It turns out that ASan relied on the at-the-end block insertion order to (purely by happenstance) disable some LLVM optimizations, which in turn start firing when the ordering is made more "normal". These optimizations in turn merge many of the instrumentation reporting calls which breaks the return address based error reporting in ASan. We're looking at several different options for fixing this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160256 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach AddressSanitizer to create basic blocks in a more natural order.Chandler Carruth2012-07-16
| | | | | | | | | This is particularly useful to the backend code generators which try to process things in the incoming function order. Also, cleanup some uses of IRBuilder to be a bit simpler and more clear. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160254 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a basic test for AddressSanitizer. This is just a bare-bonesChandler Carruth2012-07-16
| | | | | | | | | | | functionality test. In general, unless the functionality is substantially separated, we should lump more basic testing into this file. The test running infrastructure likes having a few test files with more comprehensive testing within them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160253 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] instrument cmpxchg and atomicrmwKostya Serebryany2012-05-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157683 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] move x86-specific test to a separate X86 directory with a custom ↵Kostya Serebryany2012-03-12
| | | | | | lit.local.cfg file git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152567 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace all instances of dg.exp file with lit.local.cfg, since all tests are ↵Eli Bendersky2012-02-16
| | | | | | | | | | | run with LIT now and now Dejagnu. dg.exp is no longer needed. Patch reviewed by Daniel Dunbar. It will be followed by additional cleanup patches. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150664 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] fix asan-vs-gvn.ll test (it did not actually check much before this ↵Kostya Serebryany2012-02-14
| | | | | | change) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150441 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] unpoison the stack before every noreturn call. Fixes asan issue 37. ↵Kostya Serebryany2012-02-08
| | | | | | llvm part git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150102 91177308-0d34-0410-b5e6-96231b3b80d8
* The patch resolves the conflict between AddressSanitizer and load widening ↵Kostya Serebryany2012-02-06
| | | | | | | | | | (GVN). The problem initially reported by Mozilla folks (http://code.google.com/p/address-sanitizer/issues/detail?id=20), but it also prevents us from enabling LLVM bootstrap with AddressSanitizer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149925 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] enable asan only for the functions that have Attribute::AddressSafetyKostya Serebryany2012-01-24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148846 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] one more test for asan instrumentation: (*a)++ should be instrumented ↵Kostya Serebryany2012-01-04
| | | | | | only once. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147509 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] add a test for instrumenting globalsKostya Serebryany2011-12-16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146718 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] do not instrument threadlocal globals, this is buggyKostya Serebryany2011-11-23
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145092 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] workaround for reg alloc bug 11395: don't instrument functions with ↵Kostya Serebryany2011-11-18
| | | | | | large chunks of inline assembler git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144962 91177308-0d34-0410-b5e6-96231b3b80d8
* fall back to explicit list of allowed linkages when instrumenting globals in ↵Kostya Serebryany2011-11-17
| | | | | | 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
* AddressSanitizer, first commit (compiler module only)Kostya Serebryany2011-11-16
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144758 91177308-0d34-0410-b5e6-96231b3b80d8
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