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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>
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See: https://reviews.llvm.org/D75670
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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>
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restoring old behavior without EH support
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See: https://reviews.llvm.org/D84447
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CallBase::getCalledValue has been deprecated by getCalledOperand since LLVM 8
and has been removed in LLVM 11
See: https://reviews.llvm.org/D78882
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The same applies to SmallString.
See: llvm/llvm-project@777180a#diff-497ba4c0c527a125d382b51a34f32542
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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>
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Global variables can't be a direct call target. Their values are read
and treated as indirect call targets.
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This is in preparation for LLVM 11 as the llvm:CallSite class has been
removed.
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- 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.
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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
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values
Inline asm used for memory barriers might use their operands and propagate them as
return value.
This is currently not supported. Tighten check for this condition and do not to
lift those inline asm instructions.
Fixes #1252
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appropriate existing directories and a new directory Statistics; a few missing renames.
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tly in lib/Core
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introduced during the optimization step
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Tracking function locations separately correctly without prefixing
it with a directory.
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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.
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Better debug information
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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`.
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KModule.cpp in there
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function and updated some .ll tests to use --optimize=false instead of --disable-opt
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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.
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createLowerSwitchPass moved in llvm commit 49ca55e3813c to Utils.h.
createInstructionCombiningPass moved in llvm commitb5b7fce64c1d to
InstCombine.h. So add the includes where needed.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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Since llvm commit 06d6207c1c63, WriteBitcodeToFile accepts Module &, not
Module *.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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