This improves some error messages which would otherwise refer to
ext_vector_type types in contexts where there are no such types.
Factored out from D25866 at reviewer's request.
Reviewers: bruno
Differential Revision: https://reviews.llvm.org/D31667
llvm-svn: 299641
Summary: This resolves the issue of tablegen-erated includes in the headers for non-GlobalISel builds in a simpler way than before.
Reviewers: qcolombet, ab
Reviewed By: ab
Subscribers: igorb, ab, mgorny, dberris, rovka, llvm-commits, kristof.beyls
Differential Revision: https://reviews.llvm.org/D30998
llvm-svn: 299637
Executable sections should not be padded with zero by default. On some
architectures, 0x00 is the start of a valid instruction sequence, so can confuse
disassembly between InputSections (and indeed the start of the next InputSection
in some situations). Further, in the case of misjumps into padding, padding may
start to be executed silently.
On x86, the "0xcc" byte represents the int3 trap instruction. It is a single
byte long so can serve well as padding. This change switches x86 (and x86_64) to
use this value for padding in executable sections, if no linker script directive
overrides it. It also puts the behaviour into place making it easy to change the
behaviour of other targets when desired. I do not know the relevant instruction
sequences for trap instructions on other targets however, so somebody should add
this separately.
Because the old behaviour simply wrote padding in the whole section before
overwriting most of it, this change also modifies the padding algorithm to write
padding only where needed. This in turn has caused a small behaviour change with
regards to what values are written via Fill commands in linker scripts, bringing
it into line with ld.bfd. The fill value is now written starting from the end of
the previous block, which means that it always starts from the first byte of the
fill, whereas the old behaviour meant that the padding sometimes started mid-way
through the fill value. See the test changes for more details.
Reviewed by: ruiu
Differential Revision: https://reviews.llvm.org/D30886
Bugzilla: http://bugs.llvm.org/show_bug.cgi?id=32227
llvm-svn: 299635
During the optimisation of jump tables in the constant island pass,
an extra ADD could be left over, now dead but not removed.
Differential Revision: https://reviews.llvm.org/D31389
llvm-svn: 299634
Because Polly exposes parameters that directly influence tile size
calculations, one can setup situations like divide-by-zero.
Check against a possible divide-by-zero in getMacroKernelParams
and return early.
Also assert at the end of getMacroKernelParams that the block sizes
computed for matrices are positive (>= 1).
Tags: #polly
Differential Revision: https://reviews.llvm.org/D31708
llvm-svn: 299633
This patch addresses two issues:
* It turned out that suspended thread may have dtls->dtv_size == kDestroyedThread (-1)
and LSan wrongly assumes that DTV is available. This leads to SEGV when LSan tries to
iterate through DTV that is invalid.
* In some rare cases GetRegistersAndSP can fail with errno 3 (ESRCH). In this case LSan
assumes that the whole stack of a given thread is available. This is wrong because ESRCH
can indicate that suspended thread was destroyed and its stack was unmapped. This patch
properly handles ESRCH from GetRegistersAndSP in order to avoid invalid accesses to already
unpapped threads stack.
Differential Revision: https://reviews.llvm.org/D30818
llvm-svn: 299630
Summary:
"short" is defined as an xray flag, and buffer rewinding happens for both exits
and tail exits.
I've made the choice to seek backwards finding pairs of FunctionEntry, TailExit
record pairs and erasing them if the FunctionEntry occurred before exit from the
currently exiting function. This is a compromise so that we don't skip logging
tail calls if the function that they call into takes longer our duration.
This works by counting the consecutive function and function entry, tail exit
pairs that proceed the current point in the buffer. The buffer is rewound to
check whether these entry points happened recently enough to be erased.
It is still possible we will omit them if they call into a child function that
is not instrumented which calls a fast grandchild that is instrumented before
doing other processing.
Reviewers: pelikan, dberris
Reviewed By: dberris
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D31345
llvm-svn: 299629
Summary: Need to save `lr` before bl to aeabi_div0
Reviewers: rengolin, compnerd
Reviewed By: compnerd
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D31716
llvm-svn: 299628
scanRelocs() does a lot of things. It fills InputSection's Relocations vector,
making a decision whether a TLS relocation should be relaxed or not,
and making a decision whether a GOT/PLT slot needs to be created or not.
They don't actually have to be done in a single loop. I want to separate
them so that some of them can be run concurently. As a first step, this
patch moves PLT/GOT slot assignment to beginning of the loop, so that
they just fall through to the next statements. This should make it clear
that that code doesn't affect other parts of the loop.
llvm-svn: 299615
Relocations are abstracted as platform-independent R_TLS_* relocations,
so we don't need to check platform-specific ones to see if a relocation
is TLS GD.
llvm-svn: 299614
both sending and receiving information, instead of using one socket
to send and another to receive. The two socket arrangement fails over
when a firewall is between the two systems.
<rdar://problem/31286757>
llvm-svn: 299608
Can be used as such:
$ python /path/to/lit.py -sv /path/to/llvm/build/projects/libcxx/test/ \
--param=use_system_cxx_lib=true \
--param=executor='SSHExecutor("remote.domain", "username")'
llvm-svn: 299607
This is necessary to pass the lit test suite at llvm/utils/lit/tests.
There are some pre-existing failures here, but now switching to pools
doesn't regress any tests.
I had to change test-data/lit.cfg to import DummyConfig from a module to
fix pickling problems, but I think it'll be OK if we require test
formats to be written in real .py modules outside lit.cfg files.
I also discovered that in some circumstances AsyncResult.wait() will not
raise KeyboardInterrupt in a timely manner, but you can pass a non-zero
timeout to work around this. This makes threading.Condition.wait use a
polling loop that runs through the interpreter, so it's capable of
asynchronously raising KeyboardInterrupt.
llvm-svn: 299605
- Replace documented return values (true/false) with what's actually
returned
- Doxygenify the comment
- Reflow said comment to 80 cols
Not overly familiar with Doxygen, so nits are welcome. :)
llvm-svn: 299603
Two simplifications:
- We check `!Previous.empty()` above and only use `Previous` in const
contexts after that check, so the `!Previous.empty()` check seems
redundant.
- The null check looks pointless, as well: AFAICT, `LookupResults`
should never contain null entries, and `OldDecl` should always be
non-null if `Redeclaration` is true.
llvm-svn: 299601
When compiler-rt is requested, we should attempt to link compiler-rt
builtins library rather than gcc_s.
Differential Revision: https://reviews.llvm.org/D31617
llvm-svn: 299599
The commit yesterday (r299473) to add the `-print-resource-dir`
option was supposed to emit a newline after the resource dir.
Differential Revision: https://reviews.llvm.org/D31447
llvm-svn: 299597
Moving Modules into `testMergedProgram` is incorrect (and causes segmentation
faults) since all callers expect to retain ownership. This is evidenced by the
later calls to `unique_ptr<Module>::get` in the same function.
Differential Revision: https://reviews.llvm.org/D31727
llvm-svn: 299596
Simon Pilgrim