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Value transformation operates on word instead of byte arrays.
That means the Read indicies need to be adjusted to reflect that.
Previously IndexCleanerVisitor tried to remove the multiplications in the index
to covert byte indicies to word indicies. However as the two added test cases show
this is not sufficent. Therefore we remove the IndexCleanerVisistor and just divide
the index with word size which should always be correct.
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buildMixedSelectExpr was using the byte index for holes in the
select condition instead of the word based one. This only occured
if there was more than 1 hole.
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The caching maps in ArrayExpr are broken, they only consider hashes
and don't check for structural equality. This can lead to hash collisions
and invalid Expr replacement. This is especially potetent for UpdateLists, who
only put the array name in the hash, so there can be a lot of colisions.
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ArrayExprOptimizer read the UpdateList in the wrong order, which
meant that it used least recent update instead of the most recent one.
This patch fixes this as well as adds a test to illustrate the issue.
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Having both weight and depth in execution state is wasteful,
therefore this patch removes weight.
The nurs:depth searcher is replaced by nurs:rp, which uses pow to compute
the weight
A new nurs:depth searcher is introduced that biases the search with depth,
making it the only other searcher that prefers to go deep (similar to dfs).
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Co-authored-by: Felix Rath <felix.rath@comsys.rwth-aachen.de>
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Python 2 should not be needed anymore, so we remove it from osx CI.
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to function names.
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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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dependency.
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numSeeds is unused since commit 4eb050e2999b (ExecutorTimers: refactor
and move to support lib), so remove it.
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Hoist increment of `sc` into the loop header.
Memory locations can only be written to if they are writeable.
Avoid concretising a value by writing it. If the location is not symbolic in the first place.
This avoids writing read-only memory locations.
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Fixes #264.
We first aggregate all constant memory objects initialise them and initialise their counter parts in the concrete memory.
After that, we mark memory objects as constant such that they can't be modified (i.e. this includes marking them symbolic).
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Fix multiple missing includes
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glibc 2.30 moved definition of getdents64 to dirent_ext.h. Hence, it
became visible to us (via dirent.h) and conflicts with our definition:
runtime/POSIX/fd_64.c:112:5: error: conflicting types for 'getdents64'
int getdents64(unsigned int fd, struct dirent *dirp, unsigned int count) {
^
/usr/include/bits/dirent_ext.h:29:18: note: previous declaration is here
extern __ssize_t getdents64 (int __fd, void *__buffer, size_t __length)
We use the parameters defined by kernel, not by userspace (libc). Both
glibc and uclibc define it as:
ssize_t __getdents64 (int fd, char *buf, size_t nbytes)
so follow it.
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- moves timer handling from Executor into support lib
- introduces TimerGroup, removes TimerInfo/WriteStatsTimer/UpdateReachableTimer/WriteIStatsTimer classes
- removes ExecutorTimers.cpp and ExecutorTimerInfo.h
- removes -max-instruction-time flag (see #1114)
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- adds -timer-interval threshold for timer checks
- fixes #831
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Since LLVM version 3.6.0 or lit version 0.5.0, `lit_config` is the
name of the global object, not `lit`.
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incompatible with klee_prefer_cex. Fixes https://github.com/klee/klee/issues/1161
While there, remove dependence on `sort` utility, which might help porting KLEE
Windows eventually.
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mostly following shellcheck
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