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* Update aosp/master LLVM for rebase to r235153Pirama Arumuga Nainar2015-05-185-9/+62
| | | | | Change-Id: I9bf53792f9fc30570e81a8d80d296c681d005ea7 (cherry picked from commit 0c7f116bb6950ef819323d855415b2f2b0aad987)
* Update aosp/master llvm for rebase to r233350Pirama Arumuga Nainar2015-04-0957-344/+701
| | | | Change-Id: I07d935f8793ee8ec6b7da003f6483046594bca49
* Update aosp/master LLVM for rebase to r230699.Stephen Hines2015-03-2349-270/+879
| | | | Change-Id: I2b5be30509658cb8266be782de0ab24f9099f9b9
* Update aosp/master LLVM for rebase to r222494.Stephen Hines2014-12-0235-228/+3997
| | | | Change-Id: Ic787f5e0124df789bd26f3f24680f45e678eef2d
* Update LLVM for rebase to r212749.Stephen Hines2014-07-2127-140/+545
| | | | | | | Includes a cherry-pick of: r212948 - fixes a small issue with atomic calls Change-Id: Ib97bd980b59f18142a69506400911a6009d9df18
* Update LLVM for 3.5 rebase (r209712).Stephen Hines2014-05-2912-56/+305
| | | | Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
* Update to LLVM 3.5a.Stephen Hines2014-04-2434-318/+1155
| | | | Change-Id: Ifadecab779f128e62e430c2b4f6ddd84953ed617
* Merging r195504:Manman Ren2013-12-091-0/+2
| | | | | | | | | | | | | | | | ------------------------------------------------------------------------ r195504 | mren | 2013-11-22 13:49:45 -0800 (Fri, 22 Nov 2013) | 6 lines Debug Info: update testing cases to specify the debug info version number. We are going to drop debug info without a version number or with a different version number, to make sure we don't crash when we see bitcode files with different debug info metadata format. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@196815 91177308-0d34-0410-b5e6-96231b3b80d8
* [ASan] Fix PR17867 - make sure ASan doesn't crash if use-after-scope and ↵Alexey Samsonov2013-11-182-3/+36
| | | | | | use-after-return are combined. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195014 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply "[asan] Poor man's coverage that works with ASan"Bob Wilson2013-11-151-0/+13
| | | | | | | | I was able to successfully run a bootstrapped LTO build of clang with r194701, so this change does not seem to be the cause of our failing buildbots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194789 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "[asan] Poor man's coverage that works with ASan"Bob Wilson2013-11-151-13/+0
| | | | | | | | | This reverts commit 194701. Apple's bootstrapped LTO builds have been failing, and this change (along with compiler-rt 194702-194704) is the only thing on the blamelist. I will either reappy these changes or help debug the problem, depending on whether this fixes the buildbots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194780 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] Poor man's coverage that works with ASanKostya Serebryany2013-11-141-0/+13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194701 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Use CHECK-DAG instead of CHECK where order of instructions does not ↵Evgeniy Stepanov2013-11-141-2/+2
| | | | | | | | | matter. This may fix hexagon-elf bots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194700 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Fast path optimization for wrap-indirect-calls feature of ↵Evgeniy Stepanov2013-11-141-2/+15
| | | | | | | | | | | | | | | | | | | | MemorySanitizer. Indirect call wrapping helps MSanDR (dynamic instrumentation companion tool for MSan) to catch all cases where execution leaves a compiler-instrumented module by allowing the tool to rewrite targets of indirect calls. This change is an optimization that skips wrapping for calls when target is inside the current module. This relies on the linker providing symbols at the begin and end of the module code (or code + data, does not really matter). Gold linker provides such symbols by default. GNU (BFD) linker needs a link flag: -Wl,--defsym=__executable_start=0. More info: https://code.google.com/p/memory-sanitizer/wiki/MSanDR#Native_exec git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194697 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Propagate origin for insertvalue, extractvalue.Evgeniy Stepanov2013-11-111-0/+26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194374 91177308-0d34-0410-b5e6-96231b3b80d8
* fix PR17635: false positive with packed structuresNuno Lopes2013-10-241-0/+29
| | | | | | LLVM optimizers may widen accesses to packed structures that overflow the structure itself, but should be in bounds up to the alignment of the object git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193317 91177308-0d34-0410-b5e6-96231b3b80d8
* tsan: implement no_sanitize_thread attributeDmitry Vyukov2013-10-176-10/+46
| | | | | | | | | If a function has no_sanitize_thread attribute, do not instrument memory accesses in it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192871 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] Optimize accesses to global arrays with constant indexKostya Serebryany2013-10-162-3/+64
| | | | | | | | | | | | | | | | | | | | Summary: Given a global array G[N], which is declared in this CU and has static initializer avoid instrumenting accesses like G[i], where 'i' is a constant and 0<=i<N. Also add a bit of stats. This eliminates ~1% of instrumentations on SPEC2006 and also partially helps when asan is being run together with coverage. Reviewers: samsonov Reviewed By: samsonov CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1947 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192794 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Instrument x86.*_cvt* intrinsics.Evgeniy Stepanov2013-10-141-0/+66
| | | | | | | | | Currently MSan checks that arguments of *cvt* intrinsics are fully initialized. That's too much to ask: some of them only operate on lower half, or even quarter, of the input register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192599 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Fix handling of scalar select of vectors.Evgeniy Stepanov2013-10-141-0/+19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192575 91177308-0d34-0410-b5e6-96231b3b80d8
* ObjectSizeOffsetEvaluator: Don't run into infinite recursion if we have a ↵Benjamin Kramer2013-09-291-0/+17
| | | | | | | | cyclic GEP. Those can occur in dead code. PR17402. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191644 91177308-0d34-0410-b5e6-96231b3b80d8
* TBAA: handle scalar TBAA format and struct-path aware TBAA format.Manman Ren2013-09-274-12/+12
| | | | | | | | | | | | | | | | | Remove the command line argument "struct-path-tbaa" since we should not depend on command line argument to decide which format the IR file is using. Instead, we check the first operand of the tbaa tag node, if it is a MDNode, we treat it as struct-path aware TBAA format, otherwise, we treat it as scalar TBAA format. When clang starts to use struct-path aware TBAA format no matter whether struct-path-tbaa is no, and we can auto-upgrade existing bc files, the support for scalar TBAA format can be dropped. Existing testing cases are updated to use the struct-path aware TBAA format. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191538 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Handling of atomic load/store, atomic rmw, cmpxchg.Evgeniy Stepanov2013-09-242-4/+193
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191287 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Wrap indirect functions.Evgeniy Stepanov2013-09-191-0/+21
| | | | | | | | | | Adds a flag to the MemorySanitizer pass that enables runtime rewriting of indirect calls. This is part of MSanDR implementation and is needed to return control to the DynamiRio-based helper tool on transition between instrumented and non-instrumented modules. Disabled by default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191006 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Check return value of main().Evgeniy Stepanov2013-09-161-0/+18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190782 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info Testing: update context from empty string to null.Manman Ren2013-09-081-1/+1
| | | | | | | Context should be either null or MDNode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190267 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info Testing: updated to use NULL instead of "i32 0" in a few fields.Manman Ren2013-09-061-1/+1
| | | | | | | | | Field 2 of DIType (Context), field 9 of DIDerivedType (TypeDerivedFrom), field 12 of DICompositeType (ContainingType), fields 2, 7, 12 of DISubprogram (Context, Type, ContainingType). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190205 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Fix handling of select with struct arguments.Evgeniy Stepanov2013-09-031-0/+13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189796 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Fix select instrumentation.Evgeniy Stepanov2013-09-031-0/+9
| | | | | | | | Select condition shadow was being ignored resulting in false negatives. This change OR-s sign-extended condition shadow into the result shadow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189785 91177308-0d34-0410-b5e6-96231b3b80d8
* DataFlowSanitizer: Implement trampolines for function pointers passed to ↵Peter Collingbourne2013-08-272-5/+17
| | | | | | | | custom functions. Differential Revision: http://llvm-reviews.chandlerc.com/D1503 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189408 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: add an identifier field to DICompositeType.Manman Ren2013-08-261-1/+1
| | | | | | | | | | | | | | | | | | | DICompositeType will have an identifier field at position 14. For now, the field is set to null in DIBuilder. For DICompositeTypes where the template argument field (the 13th field) was optional, modify DIBuilder to make sure the template argument field is set. Now DICompositeType has 15 fields. Update DIBuilder to use NULL instead of "i32 0" for null value of a MDNode. Update verifier to check that DICompositeType has 15 fields and the last field is null or a MDString. Update testing cases to include an extra field for DICompositeType. The identifier field will be used by type uniquing so a front end can genearte a DICompositeType with a unique identifer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189282 91177308-0d34-0410-b5e6-96231b3b80d8
* DataFlowSanitizer: correctly combine labels in the case where they are equal.Peter Collingbourne2013-08-231-4/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189133 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Fix handling of va_arg overflow area on x86_64.Evgeniy Stepanov2013-08-231-0/+25
| | | | | | | | | | The code was erroneously reading overflow area shadow from the TLS slot, bypassing the local copy. Reading shadow directly from TLS is wrong, because it can be overwritten by a nested vararg call, if that happens before va_start. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189104 91177308-0d34-0410-b5e6-96231b3b80d8
* DataFlowSanitizer: Replace non-instrumented aliases of instrumented ↵Peter Collingbourne2013-08-222-3/+16
| | | | | | | | functions, and vice versa, with wrappers. Differential Revision: http://llvm-reviews.chandlerc.com/D1442 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189054 91177308-0d34-0410-b5e6-96231b3b80d8
* DataFlowSanitizer: Prefix the name of each instrumented function with "dfs$".Peter Collingbourne2013-08-229-22/+36
| | | | | | | | | | | | | | | | DFSan changes the ABI of each function in the module. This makes it possible for a function with the native ABI to be called with the instrumented ABI, or vice versa, thus possibly invoking undefined behavior. A simple way of statically detecting instances of this problem is to prepend the prefix "dfs$" to the name of each instrumented-ABI function. This will not catch every such problem; in particular function pointers passed across the instrumented-native barrier cannot be used on the other side. These problems could potentially be caught dynamically. Differential Revision: http://llvm-reviews.chandlerc.com/D1373 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189052 91177308-0d34-0410-b5e6-96231b3b80d8
* [tests] Cleanup initialization of test suffixes.Daniel Dunbar2013-08-166-15/+1
| | | | | | | | | | | | | | | | | - Instead of setting the suffixes in a bunch of places, just set one master list in the top-level config. We now only modify the suffix list in a few suites that have one particular unique suffix (.ml, .mc, .yaml, .td, .py). - Aside from removing the need for a bunch of lit.local.cfg files, this enables 4 tests that were inadvertently being skipped (one in Transforms/BranchFolding, a .s file each in DebugInfo/AArch64 and CodeGen/PowerPC, and one in CodeGen/SI which is now failing and has been XFAILED). - This commit also fixes a bunch of config files to use config.root instead of older copy-pasted code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188513 91177308-0d34-0410-b5e6-96231b3b80d8
* DataFlowSanitizer: Add a debugging feature to help us track nonzero labels.Peter Collingbourne2013-08-151-0/+23
| | | | | | | | | | | | | | | | | | Summary: When the -dfsan-debug-nonzero-labels parameter is supplied, the code is instrumented such that when a call parameter, return value or load produces a nonzero label, the function __dfsan_nonzero_label is called. The idea is that a debugger breakpoint can be set on this function in a nominally label-free program to help identify any bugs in the instrumentation pass causing labels to be introduced. Reviewers: eugenis CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1405 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188472 91177308-0d34-0410-b5e6-96231b3b80d8
* DataFlowSanitizer: move abilist input file to Inputs.Peter Collingbourne2013-08-142-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188423 91177308-0d34-0410-b5e6-96231b3b80d8
* DataFlowSanitizer: Instrumentation for memset.Peter Collingbourne2013-08-141-0/+11
| | | | | | Differential Revision: http://llvm-reviews.chandlerc.com/D1395 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188412 91177308-0d34-0410-b5e6-96231b3b80d8
* DataFlowSanitizer: greylist is now ABI list.Peter Collingbourne2013-08-142-0/+58
| | | | | | | | | | | | | | | | | | | | | | | | | This replaces the old incomplete greylist functionality with an ABI list, which can provide more detailed information about the ABI and semantics of specific functions. The pass treats every function in the "uninstrumented" category in the ABI list file as conforming to the "native" (i.e. unsanitized) ABI. Unless the ABI list contains additional categories for those functions, a call to one of those functions will produce a warning message, as the labelling behaviour of the function is unknown. The other supported categories are "functional", "discard" and "custom". - "discard" -- This function does not write to (user-accessible) memory, and its return value is unlabelled. - "functional" -- This function does not write to (user-accessible) memory, and the label of its return value is the union of the label of its arguments. - "custom" -- Instead of calling the function, a custom wrapper __dfsw_F is called, where F is the name of the function. This function may wrap the original function or provide its own implementation. Differential Revision: http://llvm-reviews.chandlerc.com/D1345 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188402 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply r188119 now that the bug it exposed is fixed.Peter Collingbourne2013-08-121-2/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188217 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r188119 "Kill some duplicated code for removing unreachable BBs."Arnold Schwaighofer2013-08-101-12/+2
| | | | | | | | | | | | | | It is breaking builbots with libgmalloc enabled on Mac OS X. $ cd llvm ; mkdir release ; cd release $ ../configure --enable-optimized —prefix=$PWD/install $ make $ make check $ Release+Asserts/bin/llvm-lit -v --param use_gmalloc=1 --param \ gmalloc_path=/usr/lib/libgmalloc.dylib \ ../test/Instrumentation/DataFlowSanitizer/args-unreachable-bb.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188142 91177308-0d34-0410-b5e6-96231b3b80d8
* Kill some duplicated code for removing unreachable BBs.Peter Collingbourne2013-08-091-2/+12
| | | | | | | | | | | This moves removeUnreachableBlocksFromFn from SimplifyCFGPass.cpp to Utils/Local.cpp and uses it to replace the implementation of llvm::removeUnreachableBlocks, which appears to do a strict subset of what removeUnreachableBlocksFromFn does. Differential Revision: http://llvm-reviews.chandlerc.com/D1334 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188119 91177308-0d34-0410-b5e6-96231b3b80d8
* DataFlowSanitizer: Remove unreachable BBs so IR continues to verifyPeter Collingbourne2013-08-091-0/+20
| | | | | | | | under the args ABI. Differential Revision: http://llvm-reviews.chandlerc.com/D1316 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188113 91177308-0d34-0410-b5e6-96231b3b80d8
* DataFlowSanitizer; LLVM changes.Peter Collingbourne2013-08-075-0/+242
| | | | | | | | | | | | | DataFlowSanitizer is a generalised dynamic data flow analysis. Unlike other Sanitizer tools, this tool is not designed to detect a specific class of bugs on its own. Instead, it provides a generic dynamic data flow analysis framework to be used by clients to help detect application-specific issues within their own code. Differential Revision: http://llvm-reviews.chandlerc.com/D965 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187923 91177308-0d34-0410-b5e6-96231b3b80d8
* Change the linkage of these global values to 'internal'.Bill Wendling2013-08-061-2/+2
| | | | | | | | | | | | | | | | | | | The globals being generated here were given the 'private' linkage type. However, this caused them to end up in different sections with the wrong prefix. E.g., they would be in the __TEXT,__const section with an 'L' prefix instead of an 'l' (lowercase ell) prefix. The problem is that the linker will eat a literal label with 'L'. If a weak symbol is then placed into the __TEXT,__const section near that literal, then it cannot distinguish between the literal and the weak symbol. Part of the problems here was introduced because the address sanitizer converted some C strings into constant initializers with trailing nuls. (Thus putting them in the __const section with the wrong prefix.) The others were variables that the address sanitizer created but simply had the wrong linkage type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187827 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: update testing cases to pass verifier.Manman Ren2013-07-291-9/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187362 91177308-0d34-0410-b5e6-96231b3b80d8
* Current batch of -disable-debug-info-verifier.Rafael Espindola2013-07-251-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187130 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Unpoison stack allocations and undef values in blacklisted functions.Evgeniy Stepanov2013-07-031-0/+35
| | | | | | | | | This changes behavior of -msan-poison-stack=0 flag from not poisoning stack allocations to actively unpoisoning them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185538 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] workaround for PR16277: don't instrument AllocaInstr with alignment ↵Kostya Serebryany2013-06-261-0/+19
| | | | | | more than the redzone size git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184928 91177308-0d34-0410-b5e6-96231b3b80d8
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