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path: root/lib/Module/IntrinsicCleaner.cpp
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2022-03-17remove obsolete KLEE_LLVM legacy definesJulian Büning
2022-03-17remove LLVM < 6 from sourcesFrank Busse
2021-12-20llvm13: CreateGEP no longer accepts nullptrLukas Zaoral
See: https://reviews.llvm.org/D105653
2021-12-20llvm13: CreateLoad API with implicit types has been deprecatedLukas Zaoral
See: https://github.com/llvm/llvm-project/commit/6312c53870897435b38881795460ad9f34bf9819
2021-09-10llvm12: Implement llvm.abs intrinsicLukas Zaoral
The vector variants are not implemented at the moment. See: https://reviews.llvm.org/D84125 Co-authored-by: Lukas Zaoral <lzaoral@redhat.com> Co-authored-by: Martin Nowack <m.nowack@imperial.ac.uk>
2021-09-10llvm11: Handle llvm.roundeven instrinsicLukas Zaoral
See: https://reviews.llvm.org/D75670
2021-09-10llvm12: Implement llvm.{s,u}{max,min} intrinsicsLukas Zaoral
The vector variants are not implemented at the moment. See: https://reviews.llvm.org/D84125 Co-authored-by: Lukas Zaoral <lzaoral@redhat.com> Co-authored-by: Martin Nowack <m.nowack@imperial.ac.uk>
2021-02-16add ifdefs for C++ exception handlingJulian Büning
restoring old behavior without EH support
2020-10-12Implemented support for C++ ExceptionsFelix Rath
We implement the Itanium ABI unwinding base-API, and leave the C++-specific parts to libcxxabi. Co-authored-by: Lukas Wölfer <lukas.woelfer@rwth-aachen.de>
2020-09-02More robust handling of unknown intrinsicsAlastair Reid
- If an unknown intrinsic appears in the bitcode file, it is reported but execution can proceed. - If an unknown intrinsic is encountered during execution of some path, - the intrinsic is reported - this path is treated as an error - execution of other paths can proceed To be more precise, there is a list of "known unknown intrinsics". Intrinsics not on this list will prevent execution.
2020-06-29Implement fshr/fshl intrinsicsAlastair Reid
Changes: - IntrinsicCleaner accepts fshr/fshl as accepted intrinsics - Executor::executeCall converts fshr/fshl to urem/zext/concat/shift/extract - Klee/main suppresses warnings about externals that are LLVM reserved (i.e., begin with "llvm.") - New test exercises 32 and 7 bit versions including oversize shift values Test values are based on LLVM's test for fshl/fshr - Changes that depend on existence of fshr/fshl are guarded by #if LLVM_VERSION_CODE >= LLVM_VERSION(7, 0) or ; REQUIRES: geq-llvm-7.0
2019-11-15Implement @llvm.is.constant() intrinsic handling and add a test for it.Gleb Popov
2019-11-07Handle llvm.objectsize explicitlyMartin Nowack
llvm.objectsize is used in several optimisation during compile time. Lowering these intrinsics took a conservative approach returning always the value for unknown. Instead, lower to the object's real size, if possible. Otherwise, a conservative value is used. Since LLVM 4.0, the function `llvm::lowerObjectSizeCall()` does exactly this. Use this function or preserve the old behaviour for older LLVM versions.
2019-10-31LLVM 9.0: fourth parameter for @llvm.objectsize()Julian Büning
2019-10-31support compilation against LLVM 9.0Julian Büning
2019-09-20Add saturated arithmetic intrinsicsMateusz Naściszewski
2019-08-14Update basic block iterator after deleting instruction; add test caseMartin Nowack
2019-08-14fixed bug in IntrinsicCleaner trap cleanerMichael Bryman
2019-05-28Implement handling of the llvm.fabs intrinsicFelix Rath
2019-03-21drop support for LLVM <= 3.7Julian Büning
2019-03-21remove obsolete macro KLEE_LLVM_GEP_TYPEJulian Büning
2019-03-19Add support to assign debug instructions to optimised codeMartin Nowack
2019-03-19Use debugging information from newer LLVM versionsMartin Nowack
2019-03-19Refactor InstructionInfoTableMartin Nowack
Better debug information
2018-10-26llvm5: Intrinsic::objectsize has three argumentsJiri Slaby
Modify the IntrinsicCleaner accordingly. We do not do anything with the third argument as we do not handle the first argument in any way. Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
2018-10-26llvm5: handle getOrInsertFunction terminatorJiri Slaby
llvm 5 does not terminate getOrInsertFunction parameters with NULL, take care of that. Since commit 9d54400bba7eb04bca80fce97fa170452d19eaf1. Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
2018-08-03Replace remaining *Inst::Create() calls with llvm::BuilderMartin Nowack
Replace the remaining occurrences of `Inst::Create()` with `llvm::Builder` to manage metadata automatically and to fold instructions. C++11 it and clang-format
2018-07-12llvm38: no more implicit iteratorsRichard Trembecký
LLVM commit eac309550f25 removed implicit iterator conversions. So we have to get the iterators explicitly now. Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
2018-05-24llvm37: handle GetElementPtrInst::Create's new parameterJiri Slaby
LLVM 3.7 added a PointeeType parameter to GetElementPtrInst::Create. Let's handle that by a macro called KLEE_LLVM_GEP_TYPE, defined in Version.h. Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
2018-05-22clang-format on lib/Module/{IntrinsicCleaner.cpp,Passes.h}Julian Büning
2018-05-22some housekeeping in Passes.h and IntrinsicCleaner.cppJulian Büning
This commit addresses the following: * remove unused variables block_split (::runOnBasicBlock) and LI (::IntrinsicCleanerPass) in IntrinsicCleanerPass * add `dirty = true` to `Intrinsic::vacopy` case * use `eraseFromParent()` methods instead of `removeFromParent()` and `delete` * add `override` keyword to `runOn{Module,Function}` methods
2018-05-09Remove workaround for bug in older LLVM version (< 3)Martin Nowack
2017-07-23Remove support for LLVM < 3.4Martin Nowack
Request LLVM 3.4 as minimal requirement for KLEE
2017-02-25llvm: stop using global contextJiri Slaby
It was marked as deprecated long time ago and finally removed in LLVM 3.9. Remove all uses of getGlobalContext and create our own context. Propagate it all over the code then. [v2] use ctx, not C as name Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
2016-10-18Fix `-Wmisleading-indentation` warning and also correctly set theDan Liew
`dirty` flag if we remove `llvm.trap` from the module.
2015-12-19Implement support for lowering the ``llvm.objectsize`` intrinsicDan Liew
introduced in LLVM 2.7. Previously KLEE would emit the following error message when ``IntrinsicLowering::LowerIntrinsicCall()`` was called on the intrinsic ``` LLVM ERROR: Code generator does not support intrinsic function 'llvm.objectsize.i64.p0i8'! ``` The ``IntrinsicCleaner`` pass now lowers this intrinsic to a constant integer depending on the second argument to the intrinsic. This corresponds to the case where the size of the object pointed to by the first argument is unknown. An alternative design would be to handle this intrinsic in the Executor where is actually possible to know the size of objects during execution. However that would be much more complicated because if the pointer is symbolic we would have to fork for every object that could be pointed to. The implementation is similar to #260 but we handle the second argument to the intrinsic correctly and also have a simple test case. Unfortunately we have to have a different version of the test case for LLVM 2.9 because the expected suffix for the intrinsic is different in LLVM 2.9.
2015-02-13refactor integer overflow detection, add signed intLuca Dariz
Instead of checking for every possible casse which result in overflow, it is much simpler to perform the operation using integers with bigger dimension and check if the result overflow
2015-02-13Fix overflow detection in unsigned multiplicationLuca Dariz
Previously the check was done as unsigned int a, b, c; c = a * b; if (c < a) // error but it is wrong, since it catches only a subset of all the possible overflows. This patch improves the check as unsigned int a, b, c; if ((a > 1) && (b > 1){ if ((UINT_MAX/a) < b) // error } An additional case has been added to the tests, with two 32-bit values that cause overflow and are not detected by the old check. It is also necessary to break the lowering procedure in case the current BasicBlock is splitted; in this case it was necessary in order not to trigger the division by 0 error.
2015-02-13Detect overflow of unsigned add, sub and mul operationsLuca Dariz
This requires clang with -fsanitize=unsigned-integer-overflow tested with clang and llvm 3.4.2
2015-02-13Revert "Merged @luckyluke's change for detecting overflow of unsigned add, sub"Cristian Cadar
Will redo the merge to preserve original commits. This reverts commit a743d7072d9ccf11f96e3df45f25ad07da6ad9d6.
2015-02-10Merged @luckyluke's change for detecting overflow of unsigned add, subCristian Cadar
and mul operations. Refactored tests into two main cases, and disabled them on LLVM 2.9, which does not support -fsanitized=*signed-integer-overflow.
2013-12-06Deprecate LLVM 2.8 and lowerMartin Nowack
2013-10-08Remove llvm.trap declaration after cleaning all uses.Lei Zhang
2013-09-23Lower intrinsic instruction "llvm.trap" to a call of the abort() function.Lei Zhang
2013-08-27Port to LLVM 3.3Martin Nowack
Major changes are: - Switching to llvm-link to build archive files - Use GetMallocUsage instead of GetTotalMemoryUsage (be aware of bug in LLVM 3.3 http://llvm.org/bugs/show_bug.cgi?id=16847) - intrinsic library functions like memcpy/mov/set use weak linkage to be replaced by e.g. uclibc functions - rewrote linking with library - enhanced MemoryLimit test case to check if mallocs were successful
2013-08-15Implemented llvm.umul.with.overflowMartin Nowack
2013-04-04Patch by Michael Contreras and Jiri Slaby for compiling KLEE with LLVM 3.2Cristian Cadar
git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@178759 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-08Make the changes in r165394 be conditional on post LLVM 3.1 changes.Micah Villmow
git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@165405 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-08Move TargetData to DataLayout.Micah Villmow
git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@165394 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-10Lowering support for the llvm.uadd.with.overflow intrinsic.Peter Collingbourne
git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@154367 91177308-0d34-0410-b5e6-96231b3b80d8
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