about summary refs log tree commit diff homepage
path: root/lib/Module/Passes.h
AgeCommit message (Collapse)Author
2019-03-18Disable optimisation for functions that contain KLEE callsMartin Nowack
Compilers are allowed to hoist function calls and do GVE. This is currently done even without `--optimization` enabled. This is unfortunate in the context of KLEE function calls that might depend on specific code position without direct control flow dependencies. In such cases, function calls can be hoisted. To circumvent this, disallow to optimise functions that contain such calls by default. This might reduce optimisation for some functions containing such function calls but still allows it for all others. This patch adds an additional pass, that detects all functions starting with a prefix `klee_` and disable optimisations for functions containing such calls. This is enabled by default but can be disabled by `--klee-call-optimisation=false`.
2019-03-05workaround for LLVM PR39177Julian Büning
provides a workaround for LLVM bug PR39177, which affects LLVM versions 3.9 - 7.0.0: https://bugs.llvm.org/show_bug.cgi?id=39177 This commit is intended to be reverted once support for LLVM versions <= 7 is dropped from KLEE.
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
2017-07-20Replace assertions of types on LLVM instructions in the Executor with aDan Liew
pass that checks these assertions. This improves several things. * This pass provides more friendly messages than assertions in that it just emits a warning and carries on checking the rest of the instructions. * The takes the checks outside of the Executor's hot path and so avoids checking the same instruction multiple times. Now each instruction is only checked once just before execution starts. The disadvantage of this approach is the check for invariants we expect to hold have been pulled far away from where we expect them to hold. After discussion with @ccadar and @MartinNowack it was decided we will take this hit to readability for better performance and simpler code in the Executor.
2017-07-19Implement basic support for vectorized instructions.Dan Liew
We use LLVM's Scalarizer pass to remove most vectorized code so that the Executor only needs to support the InsertElement and ExtractElement instructions. This pass was not available in LLVM 3.4 so to support that LLVM version the pass has been back ported. To check that the Executor is not receiving vector operand types that it can't handle assertions have been added. There are a few limitations to this implementation. * The InsertElement and ExtractElement index cannot be symbolic. * There is no support for LLVM < 3.4.
2016-08-10Extended support for assembler raisingMartin Nowack
Improved support for assembler handling. Providing additional triple information to raise assembler for supported architectures only. Implemented support for raising full assembly memory fence. Added initial support for memory fences in Executor.
2013-12-06Deprecate LLVM 2.8 and lowerMartin Nowack
2013-12-05Fix unitialized valueMartin Nowack
2013-10-29Merge pull request #26 from delcypher/fix_divide_by_zeroPaul
Fixed bug where divide by zero bugs would only be detected once in a program
2013-09-23Lower intrinsic instruction "llvm.trap" to a call of the abort() function.Lei Zhang
2013-09-02Implemented runtime check for overshift (controllable with --check-overshiftDan Liew
command line argument). Overshift is where a Shl, AShr or LShr has a shift width greater than the bit width of the first operand. This is undefined behaviour in LLVM so we report this as an error.
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
2012-11-27Patch sent by both Bogdan Copos and Nick Sumner fixing compilation with LLVM 3.1Cristian Cadar
git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@168695 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-08Fix to previous patch, which would not compile with LLVM 2.9.Cristian Cadar
git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@165413 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
2011-07-20Updates for LLVM 3.0. Based on changes by arrowdodger, thanks!Peter Collingbourne
git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@135598 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-20Deprecate LLVM_VERSION_MAJOR and LLVM_VERSION_MINOR in favour ofPeter Collingbourne
version codes. This makes the preprocessor-based version tests more concise and less error prone. Also, fix the version tests in lib/Expr/Parser.cpp (immutable zext and trunc were introduced in LLVM 2.9); now 2.9 passes "make test". git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@135583 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-14On LLVM 2.9+, use TargetLowering::ExpandInlineAsm to expand asm codePeter Collingbourne
git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@119046 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Add missing include to make sure version macros are present.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@115146 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Spell versioning macros correctly.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@115140 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Update for LLVM API changes, patch by nobled, in PR8232.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@115138 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-01Implement va_arg handling for x86_64.Daniel Dunbar
- Based on a patch by Vladimir Kuznetsov! - x86_64 has a complicated calling convention for va_args; instead of dealing with this, this patch uses a clever workaround by initializing the va_list structure so that the callee believes all arguments were passed in the stack save area. git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@77819 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-21Initial KLEE checkin.Daniel Dunbar
- Lots more tweaks, documentation, and web page content is needed, but this should compile & work on OS X & Linux. git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@72205 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-22 13:41:44 +0000