This has existed pretty much forever AFAICT, but the code was
never being exercised because nobody was using the class. A
user of this class surfaced, and now we're breaking with UB.
The code was obviously wrong, so it's fixed here.
llvm-svn: 283912
Previously we would print
USAGE: <exe> [subcommand] [options]
Even if no subcommands were present. This changes the output
format to only print "[subcommand]" if there is at least one
subcommand.
Fixes llvm.org/pr30598
Patch by Serge Guelton
llvm-svn: 283892
LLVM's RandomNumberGenerator wasn't compatible with
the random distribution from <random>.
Fixes PR25105
Patch by: Serge Guelton <serge.guelton@telecom-bretagne.eu>
Differential Revision: https://reviews.llvm.org/D25443
llvm-svn: 283854
This should allow users of the library to get a range to iterate through
all the subcommands that are registered to the global parser. This
allows users to define subcommands in libraries that self-register to
have dispatch done at a different stage (like main). It allows for
writing code like the following:
for (auto *S : cl::getRegisteredSubcommands()) {
if (*S) {
// Dispatch on S->getName().
}
}
This change also contains tests that show this usage pattern.
Reviewers: zturner, dblaikie, echristo
Subscribers: llvm-commits, mehdi_amini
Differential Revision: https://reviews.llvm.org/D24489
llvm-svn: 283296
Summary:
Attempting to fix PR30384.
Take the same approach as in compiler_rt and add a simplified version of __get_cpuid_max.
Including cpuid.h is no longer needed.
Reviewers: echristo, joerg
Subscribers: mehdi_amini, llvm-commits
Differential Revision: https://reviews.llvm.org/D24597
llvm-svn: 283265
Summary:
This lets people link against LLVM and their own version of the UTF
library.
I determined this only affects llvm, clang, lld, and lldb by running
$ git grep -wl 'UTF[0-9]\+\|\bConvertUTF\bisLegalUTF\|getNumBytesFor' | cut -f 1 -d '/' | sort | uniq
clang
lld
lldb
llvm
Tested with
ninja lldb
ninja check-clang check-llvm check-lld
(ninja check-lldb doesn't complete for me with or without this patch.)
Reviewers: rnk
Subscribers: klimek, beanz, mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D24996
llvm-svn: 282822
Turns out several external projects relied on llvm printing statistics
on exit. Let's go back to this behaviour by default and have an optional
parameter to disable it.
llvm-svn: 282532
Previously enabling the statistics with EnableStatistics() would lead to
them getting printed to stderr/-info-output-file on exit. However
frontends may want a way to enable statistics and do the printing on
their own instead of the forced printing on exit.
This changes the code so that only the -stats option enables printing on
exit, EnableStatistics() only enables the tracking but requires invoking
one of the PrintStatistics() variants.
Differential Revision: https://reviews.llvm.org/D24819
llvm-svn: 282425
Summary:
For AMDGPU, we have been using the operating system component of the triple
for specifying the low-level runtime that is being used. The rationale for
this is that the host operating system (e.g. Linux) is irrelevant for GPU code,
since its execution enviroment will be mostly controled by the low-level runtime
being used to execute the code.
In most cases, higher level languages have their own runtime which is
implemented on top of the low-level runtime. The kernel ABIs of each
language mostly depend on the low-level runtime, but there may be some
slight differences between languages. OpenCL for example, may append
additional arguments to the kernel in order to pass values like global
offsets or buffers for printf. OpenMP, HCC, or other languages may want
to add their own values which differ from OpenCL.
The reason for adding a new opencl environment type is to make it possible for the backend
to distinguish between the ABIs of the higher-level languages and handle them correctly.
It seems cleaner to use the enviroment component for this rather than creating a new
OS type for every combination of low-level runtime / high-level language.
Reviewers: Anastasia, chandlerc
Subscribers: whchung, pekka.jaaskelainen, wdng, yaxunl, llvm-commits
Differential Revision: https://reviews.llvm.org/D24735
llvm-svn: 282218
A recent patch added support for consumeInteger() and made
getAsInteger delegate to this function. A few buildbots are
failing as a result with an assertion failure. On a hunch,
I tested what happens if I call getAsInteger() on an empty
string, and sure enough it crashes the same way that the
buildbots are crashing.
I confirmed that getAsInteger() on an empty string did not
crash before my patch, so I suspect this to be the cause.
I also added a unit test for the empty string.
llvm-svn: 282170
StringRef::getInteger() exists and treats the entire string as
an integer of the specified radix, failing if any invalid characters
are encountered or the number overflows.
Sometimes you might have something like "123456foo" and you want
to get the number 123456 and leave the string "foo" remaining.
This is similar to what would be possible by using the standard
runtime library functions strtoul et al and specifying an end
pointer.
This patch adds consumeInteger(), which does exactly that. It
consumes as much as possible until an invalid character is found,
and modifies the StringRef in place so that upon return only
the portion of the StringRef after the number remains.
Differential Revision: https://reviews.llvm.org/D24778
llvm-svn: 282164
This should allow users of the library to get a range to iterate through
all the subcommands that are registered to the global parser. This
allows users to define subcommands in libraries that self-register to
have dispatch done at a different stage (like main). It allows for
writing code like the following:
for (auto *S : cl::getRegisteredSubcommands()) {
if (*S) {
// Dispatch on S->getName().
}
}
This change also contains tests that show this usage pattern.
Reviewers: zturner, dblaikie, echristo
Subscribers: llvm-commits, mehdi_amini
Differential Revision: https://reviews.llvm.org/D24489
llvm-svn: 281290
- Add AllocatorList, a non-intrusive list that owns an LLVM-style
allocator and provides a std::list-like interface (trivially built on
top of simple_ilist),
- add a typedef (and unit tests) for BumpPtrList, and
- use BumpPtrList for the list of llvm::yaml::Token (i.e., TokenQueueT).
TokenQueueT has no need for the complexity of an intrusive list. The
only reason to inherit from ilist was to customize the allocator.
TokenQueueT was the only example in-tree of using ilist<> in a truly
non-intrusive way.
Moreover, this removes the final use of the non-intrusive
ilist_traits<>::createNode (after r280573, r281177, and r281181). I
have a WIP patch that removes this customization point (and the API that
relies on it) that I plan to commit soon.
Note: AllocatorList owns the allocator, which limits the viable API
(e.g., splicing must be on the same list). For now I've left out
any problematic API. It wouldn't be hard to split AllocatorList into
two layers: an Impl class that calls DerivedT::getAlloc (via CRTP), and
derived classes that handle Allocator ownership/reference/etc semantics;
and then implement splice with appropriate assertions; but TBH we should
probably just customize the std::list allocators at that point.
llvm-svn: 281182
SmallVectors are convenient, but they don't cover every use case.
In particular, they are fairly large (3 pointers + one element) and
there is no way to take ownership of the buffer to put it somewhere
else. This patch then adds a lower lever interface that works with
any buffer.
llvm-svn: 281082
This adds a copy of the demangler in libcxxabi.
The code also has no dependencies on anything else in LLVM. To enforce
that I added it as another library. That way a BUILD_SHARED_LIBS will
fail if anyone adds an use of StringRef for example.
The no llvm dependency combined with the fact that this has to build
on linux, OS X and Windows required a few changes to the code. In
particular:
No constexpr.
No alignas
On OS X at least this library has only one global symbol:
__ZN4llvm16itanium_demangleEPKcPcPmPi
My current plan is:
Commit something like this
Change lld to use it
Change lldb to use it as the fallback
Add a few #ifdefs so that exactly the same file can be used in
libcxxabi to export abi::__cxa_demangle.
Once the fast demangler in lldb can handle any names this
implementation can be replaced with it and we will have the one true
demangler.
llvm-svn: 280732
Crash was possible if match() method
was called on object that was moved or object
created with empty constructor.
Testcases updated.
DIfferential revision: https://reviews.llvm.org/D24123
llvm-svn: 280473
If we failed to commit the buffer but did not die to a signal, the temp
file would remain on disk on Windows. Having an open file mapping and
file handle prevents the file from being deleted. I am choosing not to
add an assertion of success on the temp file removal, since virus
scanners and other environmental things can often cause removal to fail
in real world tools.
Also fix more temp file leaks in unit tests.
llvm-svn: 280445
initializers not being in the same order as the members.
Specifically, 'preg' is the first member followed by 'error', so they
will be initialized in that order and should be written in the member
initializer list in that order.
For the constructor in question, there is no change in behavior.
llvm-svn: 280345
This is useful when need to defer the construction,
e.g. using Regex as a member of class.
Differential revision: https://reviews.llvm.org/D24101
llvm-svn: 280339
Many lists want to override only allocation semantics, or callbacks for
iplist. Split these up to prevent code duplication.
- Specialize ilist_alloc_traits to change the implementations of
deleteNode() and createNode().
- One common desire is to do nothing deleteNode() and disable
createNode(). Specialize ilist_alloc_traits to inherit from
ilist_noalloc_traits for that behaviour.
- Specialize ilist_callback_traits to use the addNodeToList(),
removeNodeFromList(), and transferNodesFromList() callbacks.
As a drive-by, add some coverage to the callback-related unit tests.
llvm-svn: 280128
This function allows getting arbitrary sized block of random bytes.
Primary motivation is support for --build-id=uuid in lld.
Differential revision: https://reviews.llvm.org/D23671
llvm-svn: 279807
This patch changes LLVM_CONSTEXPR variable declarations to const
variable declarations, since LLVM_CONSTEXPR expands to nothing if the
current compiler doesn't support constexpr. In all of the changed
cases, it looks like the code intended the variable to be const instead
of sometimes-constexpr sometimes-not.
llvm-svn: 279696
Remove all the dead code around ilist_*sentinel_traits. This is a
follow-up to gutting them as part of r279314 (originally r278974),
staged to prevent broken builds in sub-projects.
Uses were removed from clang in r279457 and lld in r279458.
llvm-svn: 279473
Xcode and MSVC list the headers and source files for each library.
LLVMSupport lists included the source files for ADT but not the headers. This
add the ADT headers so that they are browsable by the UI.
llvm-svn: 279470
This is used to mark functions with the C++11 [[ noreturn ]] or C11 _Noreturn
attributes.
Patch by Victor Leschuk!
https://reviews.llvm.org/D23167
llvm-svn: 278940
The struct LineNoCacheTy is in SourceMgr.cpp inside anonymous namespace.
This diff changes the order of fields and removes the excessive padding
(8 bytes).
Patch by Alexander Shaposhnikov!
Differential revision: https://reviews.llvm.org/D23546
llvm-svn: 278838
Share code for the (mostly problematic) embedded sentinel traits.
- Move the LLVM_NO_SANITIZE("object-size") attribute to
ilist_half_embedded_sentinel_traits and ilist_embedded_sentinel_traits
(previously it spread throughout the code duplication).
- Add an ilist_full_embedded_sentinel_traits which has no UB (but has
the downside of storing the complete node).
- Replace all the custom sentinel traits in LLVM with a declaration of
ilist_sentinel_traits that inherits from one of the embedded sentinel
traits classes.
There are still custom sentinel traits in other LLVM subprojects. I'll
remove those in a follow-up.
Nothing at all should be changing here, this is just rearranging code.
Note that the final goal here is to remove the sentinel traits
altogether, settling on the memory layout of
ilist_half_embedded_sentinel_traits without the UB. This intermediate
step moves the logic into ilist.h.
llvm-svn: 278513
Add unittest to {ARM | AArch64}TargetParser,and by the way correct problems as below:
1.Correct a incorrect indexing problem in AArch64TargetParser. The architecture enumeration
is shared across ARM and AArch64 in original implementation.But In the code,I just used the
index which was offset by the ARM, and this would index into the array incorrectly. To make
AArch64 has its own arch enum,or we will do a lot of slowly iterating.
2.Correct a spelling error. The parameter of llvm::AArch64::getArchExtName.
3.Correct a writing mistake, in llvm::ARM::parseArchISA.
Differential Revision: https://reviews.llvm.org/D21785
llvm-svn: 276957
Process::GetEnv does the right thing across our platforms.
CommandLine.cpp had, more or less, the same logic. Let's remove the
duplication.
No functional change is intended.
llvm-svn: 276572
This adds versions of operator + and - which are optimized for the LHS/RHS of the
operator being RValue's. When an RValue is available, we can use its storage space
instead of allocating new space.
On code such as ConstantRange which makes heavy use of APInt's over 64-bits in size,
this results in significant numbers of saved allocations.
Thanks to David Blaikie for all the review and most of the code here.
llvm-svn: 276470
Summary:
When giving the following command:
% llvm-cov report -instr-profile=default.profraw
llvm-cov will give the following error message:
>llvm-cov report: Not enough positional command line arguments specified!
>Must specify at least 1 positional arguments: See: orbis-llvm-cov report -help
This patch changes the error message from '1 positional arguments'
to '1 positional argument'.
Differential Revision: https://reviews.llvm.org/D22621
llvm-svn: 276404
Summary:
Mirroring most cleanup changed from compiler-rt/lib/builtins/cpu_model.
x86 methods are still returning a bool.
Reviewers: llvm-commits, echristo, craig.topper, sanjoy
Subscribers: mehdi_amini
Differential Revision: https://reviews.llvm.org/D22480
llvm-svn: 276149
Summary: substr doesn't modify the string, so this line has no effect.
Reviewers: majnemer
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D22540
llvm-svn: 276057
This makes sure that space is actually available. With this change
running lld on a full file system causes it to exit with
failed to open foo: No space left on device
instead of crashing with a sigbus.
llvm-svn: 276017
Summary:
The triple used for this distribution is mips64el-linux-gnuabi64.
Reviewers: sdardis
Subscribers: sdardis, llvm-commits
Differential Revision: https://reviews.llvm.org/D22406
llvm-svn: 275966
This adds Clang-specific DWARF constants for nullability and ObjC
class properties that are already generated by clang. This patch adds
dwarfdump support and a more comprehensive testcase.
<rdar://problem/27335745>
llvm-svn: 275354
See http://reviews.llvm.org/D22079
Changes the Archive::child_begin and Archive::children to require a reference
to an Error. If iterator increment fails (because the archive header is
damaged) the iterator will be set to 'end()', and the error stored in the
given Error&. The Error value should be checked by the user immediately after
the loop. E.g.:
Error Err;
for (auto &C : A->children(Err)) {
// Do something with archive child C.
}
// Check the error immediately after the loop.
if (Err)
return Err;
Failure to check the Error will result in an abort() when the Error goes out of
scope (as guaranteed by the Error class).
llvm-svn: 275316
Since these are named nvvm_* rather than nvptx_*, we also need to
update getArchTypePrefix. It's a bit unusual for getArchTypePrefix not
to match the backend name, but I think this fits the intent of the
function in this case.
llvm-svn: 274890
Summary:
Add renderscript32 and renderscript64 ArchTypes. This is to configure
the ABI requirement on 32-bit RenderScript that 'long' types have 64-bit
size and alignment. 64-bit RenderScript is the same as AArch64, but is
added here for completeness.
Reviewers: echristo, rsmith
Subscribers: aemerson, jfb, rampitec, dschuff, mehdi_amini, llvm-commits, srhines
Differential Revision: http://reviews.llvm.org/D21333
llvm-svn: 274412
This fixes an issue where occurrence counts would be unexpectedly
reset when parsing different parts of a command line multiple
times.
**ORIGINAL COMMIT MESSAGE**
This allows command line tools to use syntaxes like the following:
llvm-foo.exe command1 -o1 -o2
llvm-foo.exe command2 -p1 -p2
Where command1 and command2 contain completely different sets of
valid options. This is backwards compatible with previous uses
of llvm cl which did not support subcommands, as any option
which specifies no optional subcommand (e.g. all existing
code) goes into a special "top level" subcommand that expects
dashed options to appear immediately after the program name.
For example, code which is subcommand unaware would generate
a command line such as the following, where no subcommand
is specified:
llvm-foo.exe -q1 -q2
The top level subcommand can co-exist with actual subcommands,
as it is implemented as an actual subcommand which is searched
if no explicit subcommand is specified. So llvm-foo.exe as
specified above could be written so as to support all three
aforementioned command lines simultaneously.
There is one additional "special" subcommand called AllSubCommands,
which can be used to inject an option into every subcommand.
This is useful to support things like help, so that commands
such as:
llvm-foo.exe --help
llvm-foo.exe command1 --help
llvm-foo.exe command2 --help
All work and display the help for the selected subcommand
without having to explicitly go and write code to handle each
one separately.
This patch is submitted without an example of anything actually
using subcommands, but a followup patch will convert the
llvm-pdbdump tool to use subcommands.
Reviewed By: beanz
llvm-svn: 274171
This gets rid of the memory fence in the hot path (dereferencing the
ManagedStatic), trading for an extra mutex lock in the cold path (when
the ManagedStatic was uninitialized). Since this only happens on the
first accesses it shouldn't matter much. On strict architectures like
x86 this removes any atomic instructions from the hot path.
Also remove the tsan annotations, tsan knows how standard atomics work
so they should be unnecessary now.
llvm-svn: 274131
This allows us to query about the endianness without having to
look at DataLayout. The API will be used (and tested) in lld,
in order to find out the endianness of BitcodeFiles.
Briefly discussed with Rafael.
llvm-svn: 274090
Our existing yaml::Output code writes tags immediately when mapTag is called, without any state handling. This results in tags on sequence elements being written before the element itself. For example, we see this:
SomeArray: !elem_type
- key1: 1
key2: 2 !elem_type2
- key3: 3
key4: 4
We should instead see:
SomeArray:
- !elem_type
key1: 1
key2: 2
- !elem_type2
key3: 3
key4: 4
Our reader handles reading properly, so this bug only impacts writing yaml sequences with tagged elements.
As a test for this I've modified the Mach-O yaml encoding to allways apply the !mach-o tag when encoding MachOYAML::Object entries. This results in the !mach-o tag appearing as expected in dumped fat files.
llvm-svn: 274067
This allows command line tools to use syntaxes like the following:
llvm-foo.exe command1 -o1 -o2
llvm-foo.exe command2 -p1 -p2
Where command1 and command2 contain completely different sets of
valid options. This is backwards compatible with previous uses
of llvm cl which did not support subcommands, as any option
which specifies no optional subcommand (e.g. all existing
code) goes into a special "top level" subcommand that expects
dashed options to appear immediately after the program name.
For example, code which is subcommand unaware would generate
a command line such as the following, where no subcommand
is specified:
llvm-foo.exe -q1 -q2
The top level subcommand can co-exist with actual subcommands,
as it is implemented as an actual subcommand which is searched
if no explicit subcommand is specified. So llvm-foo.exe as
specified above could be written so as to support all three
aforementioned command lines simultaneously.
There is one additional "special" subcommand called AllSubCommands,
which can be used to inject an option into every subcommand.
This is useful to support things like help, so that commands
such as:
llvm-foo.exe --help
llvm-foo.exe command1 --help
llvm-foo.exe command2 --help
All work and display the help for the selected subcommand
without having to explicitly go and write code to handle each
one separately.
This patch is submitted without an example of anything actually
using subcommands, but a followup patch will convert the
llvm-pdbdump tool to use subcommands.
Reviewed By: beanz
Differential Revision: http://reviews.llvm.org/D21485
llvm-svn: 274054
Summary: Actually the list of cached files is sorted by file size, not by last accessed time. Also remove unused file access time param for a helper function.
Reviewers: joker-eph, chandlerc, davide
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D21639
llvm-svn: 273852
Darwin added support in its Xcode 8.0 tools (released in the beta) for universal
files where offsets and sizes for the objects are 64-bits to allow support for
objects contained in universal files to be larger then 4gb. The change is very
straight forward. There is a new magic number that differs by one bit, much
like the 64-bit Mach-O files. Then there is a new structure that follow the
fat_header that has the same layout but with the offset and size fields using
64-bit values instead of 32-bit values.
rdar://26899493
llvm-svn: 273207
Trying to expand short names with a relative path doesn't work, so this
first gets the module name to get a full path (which can still have short
names).
llvm-svn: 273171
Some build systems use the short (8.3) file names on Windows, especially if the path has spaces in it. The shortening made it impossible for clang to distinguish between clang.exe, clang++.exe, and clang-cl.exe. So this expands short names in the first argument and does wildcard expansion for the rest.
Differential Revision: http://reviews.llvm.org/D21420
llvm-svn: 272967
- We lacked a short unique identifier for a statistics, so I renamed the
current "Name" field that just contained the DEBUG_TYPE name of the
current file to DebugType and added a new "Name" field that contains
the C++ identifier of the statistic variable.
- Add the -stats-json option which outputs statistics in json format.
Differential Revision: http://reviews.llvm.org/D20995
llvm-svn: 272826
Differential Revision: http://reviews.llvm.org/D19842
Corresponding clang patch: http://reviews.llvm.org/D19843
Re-commit after addressing issues with of generating too many warnings for Windows and asan test failures
Patch by Eric Niebler
llvm-svn: 272555
[cpu-detection] [amdfam10] Return barcelona, and amdfam10 for all other
subtypes. Address Bug 28067.
Along with the refactoring of Host.cpp, getHostCPUName() was modified to
return more precise types for CPUs in amdfam10.
However, callers of getHostCPUName() do string matching on type, so this
cannot be modified.
Currently there is support in the x86 backend for barcelona.
For all other subtypes the assumed return value is amdfam10.
Fix: getHostCPUName() returns barcelona subtype and amdfam10 for all
others. This can be extended further when support for the other subtypes
is added.
Differential revision: http://reviews.llvm.org/D21193
llvm-svn: 272333
Summary: Remove architecture subtype from the string returned by getHostCPUName(). String matching done on type.
Reviewers: llvm-commits, echristo
Subscribers: mehdi_amini
Differential Revision: http://reviews.llvm.org/D21193
llvm-svn: 272328
looking for it along $PATH. This allows installs of LLVM tools outside of
$PATH to find the symbolizer and produce pretty backtraces if they crash.
llvm-svn: 272232
Summary:
Break on all switch cases for outer and inner switches.
No functionality changed.
Reviewers: llvm-commits, sanjoy
Differential Revision: http://reviews.llvm.org/D21158
llvm-svn: 272228
Summary:
Now DISubroutineType has a 'cc' field which should be a DW_CC_ enum. If
it is present and non-zero, the backend will emit it as a
DW_AT_calling_convention attribute. On the CodeView side, we translate
it to the appropriate enum for the LF_PROCEDURE record.
I added a new LLVM vendor specific enum to the list of DWARF calling
conventions. DWARF does not appear to attempt to standardize these, so I
assume it's OK to do this until we coordinate with GCC on how to emit
vectorcall convention functions.
Reviewers: dexonsmith, majnemer, aaboud, amccarth
Subscribers: mehdi_amini, llvm-commits
Differential Revision: http://reviews.llvm.org/D21114
llvm-svn: 272197
The architecture enumeration is shared across ARM and AArch64. However, the
data is not. The code incorrectly would index into the array using the
architecture index which was offset by the ARMv7 architecture enumeration. We
do not have a marker for indicating the architectural family to which the
enumeration belongs so we cannot be clever about offsetting the index (at least
it is not immediately apparent to me). Instead, fall back to the tried-and-true
method of slowly iterating the array (its not a large array, so the impact of
this is not too high).
Because of the incorrect indexing, if we were lucky, we would crash, but usually
we would return an invalid StringRef. We did not have any tests for the AArch64
target parser previously;. Extend the previous tests I had added for ARM to
cover AArch64 for ensuring that we return expected StringRefs.
Take the opportunity to change some iterator types to references.
This work is needed to support parsing `.arch name` directives in the AArch64
target asm parser.
llvm-svn: 272145
Summary:
Following D20970 (committed as r271726).
This is a substantial refactoring of the host CPU detection code.
There is no functionality change intended, but the changes are extensive.
Definitions of architecture types and subtypes are by no means exhaustive or
perfectly defined, but a fair starting point.
Suggestions for futher improvements are welcome.
Reviewers: llvm-commits
Differential Revision: http://reviews.llvm.org/D20988
llvm-svn: 271921
CALL_ONCE_... macro in the legacy pass manager with the new
llvm::call_once facility.
Nothing changed sicne the last attempt in r271781 which I reverted in
r271788. At least one of the failures I saw was spurious, and I want to
make sure the other failures are real before I work around them -- they
appeared to only effect ppc64le and ppc64be.
Original commit message of r271781:
----
[LPM] Reinstate r271652 to replace the CALL_ONCE_... macro in the legacy
pass manager with the new llvm::call_once facility.
This reverts commit r271657 and re-applies r271652 with a fix to
actually work with arguments. In the original version, we just ended up
directly calling std::call_once via ADL because of the std::once_flag
argument. The llvm::call_once never worked with arguments. Now,
llvm::call_once is a variadic template that perfectly forwards
everything. As a part of this it had to move to the header and we use
a generic functor rather than an explict function pointer. It would be
nice to use std::invoke here but we don't have it yet. That means
pointer to members won't work here, but that seems a tolerable
compromise.
I've also tested this by forcing the fallback path, so hopefully it
sticks this time.
----
Original commit message of r271652:
----
[LPM] Replace the CALL_ONCE_... macro in the legacy pass manager with
the new llvm::call_once facility.
This facility matches the standard APIs and when the platform supports
it actually directly uses the standard provided functionality. This is
both more efficient on some platforms and much more TSan friendly.
The only remaining user of the cas_flag and home-rolled atomics is the
fallback implementation of call_once. I have a patch that removes them
entirely, but it needs a Windows patch to land first.
This alone substantially cleans up the macros for the legacy pass
manager, and should subsume some of the work Mehdi was doing to clear
the path for TSan testing of ThinLTO, a really important step to have
reliable upstream testing of ThinLTO in all forms.
----
llvm-svn: 271800
There appears to be a strange exception thrown and crash using call_once
on a PPC build bot, and a *really* weird windows link error for
GCMetadata.obj. Still need to investigate the cause of both problems.
Original change summary:
[LPM] Reinstate r271652 to replace the CALL_ONCE_... macro in the legacy
pass manager with the new llvm::call_once facility.
llvm-svn: 271788
pass manager with the new llvm::call_once facility.
This reverts commit r271657 and re-applies r271652 with a fix to
actually work with arguments. In the original version, we just ended up
directly calling std::call_once via ADL because of the std::once_flag
argument. The llvm::call_once never worked with arguments. Now,
llvm::call_once is a variadic template that perfectly forwards
everything. As a part of this it had to move to the header and we use
a generic functor rather than an explict function pointer. It would be
nice to use std::invoke here but we don't have it yet. That means
pointer to members won't work here, but that seems a tolerable
compromise.
I've also tested this by forcing the fallback path, so hopefully it
sticks this time.
Original commit message:
----
[LPM] Replace the CALL_ONCE_... macro in the legacy pass manager with
the new llvm::call_once facility.
This facility matches the standard APIs and when the platform supports
it actually directly uses the standard provided functionality. This is
both more efficient on some platforms and much more TSan friendly.
The only remaining user of the cas_flag and home-rolled atomics is the
fallback implementation of call_once. I have a patch that removes them
entirely, but it needs a Windows patch to land first.
This alone substantially cleans up the macros for the legacy pass
manager, and should subsume some of the work Mehdi was doing to clear
the path for TSan testing of ThinLTO, a really important step to have
reliable upstream testing of ThinLTO in all forms.
llvm-svn: 271781
This is currently used by clang to lock access to modules; improve the
error message so that clang can use better output messages from locking
error issues.
rdar://problem/26529101
Differential Review: http://reviews.llvm.org/D20942
llvm-svn: 271755
Summary:
Follow-up to D20926 (committed as r271595, r271596).
This patch is in preparation for a substantial refactoring of the code.
No functionality changed.
Differential Revision: http://reviews.llvm.org/D20970
llvm-svn: 271726
code. To make the diffs easier to read, clang-format everything first.
No functionality changed.
Patch by Alina Sbirlea!
http://reviews.llvm.org/D20926
llvm-svn: 271595
D19271.
Previous attempt was broken by NetBSD, so in this version I've made the
fallback path generic rather than Windows specific and sent both Windows
and NetBSD to it.
I've also re-formatted the code some, and used an exact clone of the
code in PassSupport.h for doing manual call-once using our atomics
rather than rolling a new one.
If this sticks, we can replace the fallback path for Windows with
a Windows-specific implementation that is more reliable.
Original commit message:
This patch adds an llvm_call_once which is a wrapper around
std::call_once on platforms where it is available and devoid
of bugs. The patch also migrates the ManagedStatic mutex to
be allocated using llvm_call_once.
These changes are philosophically equivalent to the changes
added in r219638, which were reverted due to a hang on Win32
which was the result of a bug in the Windows implementation
of std::call_once.
Differential Revision: http://reviews.llvm.org/D5922
llvm-svn: 271558
except for CompareAndSwap. That is the only one still being used
anywhere now that statistics have been moved onto std::atomic.
Also, add a warning to the header that we shouldn't introduce more uses
of these old style atomics and instead should be using C++11's
std::atomic facilities.
Really hoping that we can hammer out the last couple of users here and
replace them with something more localized and/or principled, but
figured this was a pretty good start. =]
Note that this patch will need to be reverted if r271504 needs to be
reverted as that removes the last user of these. However, the biggest
risk for that patch was MSVC 2013 and at least one bot has already
passed where it would have failed there. I've tested MSVC 2015 using
their web interfaces and other platforms seem fine, so I'm optimistic.
Differential Revision: http://reviews.llvm.org/D20901
llvm-svn: 271540
warning: cast from type ‘const void*’ to type
‘llvm::PrettyStackTraceEntry*’ casts away qualifiers [-Wcast-qual]
PrettyStackTraceHead = (PrettyStackTraceEntry*)Top;
llvm-svn: 271069
This will be needed in order to consistently return an Error
to clients of the API being developed in D20268.
Differential Revision: http://reviews.llvm.org/D20550
llvm-svn: 270967
APInt::operator+(uint64_t) just forwarded to operator+(const APInt&).
Constructing the APInt for the RHS takes an allocation which isn't
required. Also, for APInt's in the slow path, operator+ would
call add() internally which iterates over both arrays of values. Instead
we can use add_1 and sub_1 which only iterate while there is something to do.
Using the memory for 'opt -O2 verify-uselistorder.lto.opt.bc -o opt.bc'
(see r236629 for details), this reduces the number of allocations from
23.9M to 22.7M.
llvm-svn: 270959
StringError can be used to represent Errors that aren't recoverable based on
the error type, but that have a useful error message that can be reported to
the user or logged.
llvm-svn: 270948
APInt::slt was copying the LHS and RHS in to temporaries then making
them unsigned so that it could use an unsigned comparision. It did
this even on the paths which were trivial to give results for, such
as the sign bit of the LHS being set while RHS was not set.
This changes the logic to return out immediately in the trivial cases,
and use an unsigned comparison in the remaining cases. But this time,
just use the unsigned comparison directly without creating any temporaries.
This works because, for example:
true = (-2 slt -1) = (0xFE ult 0xFF)
Also added some tests explicitly for slt with APInt's larger than 64-bits
so that this new code is tested.
Using the memory for 'opt -O2 verify-uselistorder.lto.opt.bc -o opt.bc'
(see r236629 for details), this reduces the number of allocations from
26.8M to 23.9M.
llvm-svn: 270881
At some point we're going to need libObject to have this dependency, but as it is now this is causing too many headaches. This commit will reduce the linkage to just llvm-objdump where it is strictly needed, and we'll cross the libObject bridge later when we need it.
llvm-svn: 270866
There's already a ARMTargetParser,now adding a similar one for aarch64.
so we can use it to do ARCH/CPU/FPU parsing in clang and llvm, instead of
string comparison.
Patch by Jojo Ma.
llvm-svn: 270687
This should fix PR27855. We have some terrible hacks in the CMake to add linking SYSTEM_LIBS to all tools. I think we need a better way to do this in the future.
llvm-svn: 270605
the C standard library implementation in use.
This works around a glibc bug in the backtrace() function where it fails to
produce a backtrace on x86_64 if libgcc / libunwind is statically linked.
llvm-svn: 270276
- glibc is dynamically linked, and
- libgcc_s is unavailable (for instance, another library is being used to
provide the compiler runtime or libgcc is statically linked), and
- the target is x86_64.
If we run backtrace() and it fails to find any stack frames, try using
_Unwind_Backtrace instead if available.
llvm-svn: 269992
Summary:
MONITORX/MWAITX instructions provide similar capability to the MONITOR/MWAIT
pair while adding a timer function, such that another termination of the MWAITX
instruction occurs when the timer expires. The presence of the MONITORX and
MWAITX instructions is indicated by CPUID 8000_0001, ECX, bit 29.
The MONITORX and MWAITX instructions are intercepted by the same bits that
intercept MONITOR and MWAIT. MONITORX instruction establishes a range to be
monitored. MWAITX instruction causes the processor to stop instruction execution
and enter an implementation-dependent optimized state until occurrence of a
class of events.
Opcode of MONITORX instruction is "0F 01 FA". Opcode of MWAITX instruction is
"0F 01 FB". These opcode information is used in adding tests for the
disassembler.
These instructions are enabled for AMD's bdver4 architecture.
Patch by Ganesh Gopalasubramanian!
Reviewers: echristo, craig.topper, RKSimon
Subscribers: RKSimon, joker.eph, llvm-commits
Differential Revision: http://reviews.llvm.org/D19795
llvm-svn: 269911
Summary:
Add support to control where files for a distributed backend (the
individual index files and optional imports files) are created.
This is invoked with a new thinlto-prefix-replace option in the gold
plugin and llvm-lto. If specified, expects a string of the form
"oldprefix:newprefix", and instead of generating these files in the
same directory path as the corresponding bitcode file, will use a path
formed by replacing the bitcode file's path prefix matching oldprefix
with newprefix.
Also add a new replace_path_prefix helper to Path.h in libSupport.
Depends on D19636.
Reviewers: joker.eph
Subscribers: llvm-commits, joker.eph
Differential Revision: http://reviews.llvm.org/D19644
llvm-svn: 269771
This reverts commit r221331 and reinstate r220932 as discussed in D19271.
Original commit message was:
This patch adds an llvm_call_once which is a wrapper around
std::call_once on platforms where it is available and devoid
of bugs. The patch also migrates the ManagedStatic mutex to
be allocated using llvm_call_once.
These changes are philosophically equivalent to the changes
added in r219638, which were reverted due to a hang on Win32
which was the result of a bug in the Windows implementation
of std::call_once.
Differential Revision: http://reviews.llvm.org/D5922
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 269577
This patch corresponds to review:
http://reviews.llvm.org/D19683
Simply adds the bits for being able to specify -mcpu=pwr9 to the back end.
llvm-svn: 268950
Summary:
As per the discussion on LLVM-dev this patch proposes removing LLVM_ENABLE_TIMESTAMPS.
The only complicated bit of this patch is the Windows support. On windows we used to log an error if /INCREMENTAL was passed to the linker when timestamps were disabled.
With this change since timestamps in code are always disabled we will always compile on windows with /Brepro unless /INCREMENTAL is specified, and we will log a warning when /INCREMENTAL is specified to notify the user that the build will be non-deterministic.
See: http://lists.llvm.org/pipermail/llvm-dev/2016-May/098990.html
Reviewers: bogner, silvas, rnk
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D19892
llvm-svn: 268670
In the current implementation compiler only prints stack trace
to console after crash. This patch adds saving of minidump
files which contain a useful subset of the information for
further debugging.
Differential Revision: http://reviews.llvm.org/D18216
llvm-svn: 268519
We wish to re-use this from llvm-pdbdump, and it provides a nice
way to print structured data in scoped format that could prove
useful for many other dumping tools as well. Moving to support
and changing name to ScopedPrinter to better reflect its purpose.
llvm-svn: 268342
In gcc, \ escapes every character in response files. It is true that this makes
it harder to mention Windows files in rsp files, but not doing this means clang
disagrees with gcc, and also disagrees with the shell (on non-Windows) which
rsp file quoting is supposed to match. clang isn't free to choose what to do
here.
In general, the idea for response files is to take bits of your command line
and write them to a file unchanged, and have things work the same way. Since
the command line would've been interpreted by the shell, things in the rsp file
need to be subject to the same shell quoting rules.
People who want to put Windows-style paths in their response files either need
to do any of:
* escape their backslashes
* or use clang-cl which uses cl.exe/cmd.exe quoting rules
* pass --rsp-quoting=windows to clang to tell it to use
cl.exe/cmd.exe quoting rules for response files.
Fixes PR27464.
http://reviews.llvm.org/D19417
llvm-svn: 267556
Removed some unused headers, replaced some headers with forward class declarations.
Found using simple scripts like this one:
clear && ack --cpp -l '#include "llvm/ADT/IndexedMap.h"' | xargs grep -L 'IndexedMap[<]' | xargs grep -n --color=auto 'IndexedMap'
Patch by Eugene Kosov <claprix@yandex.ru>
Differential Revision: http://reviews.llvm.org/D19219
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 266595
By running TSAN on the ThreadPool unit tests it was discovered that the
threads in the pool can pop tasks off the queue at the same time the
"wait" routine is trying to check if the task queue is empty. This patch
fixes this problem by checking for active threads in the waiter before
checking whether the queue is empty.
Patch by Jason Henline.
Differential Revision: http://reviews.llvm.org/D18811
Reviewers: joker.eph, jlebar
llvm-svn: 265618
Some Include What You Use suggestions were used too.
Use anonymous namespaces in source files.
Differential revision: http://reviews.llvm.org/D18778
llvm-svn: 265454
Incremental LTO will usea cache to store object files.
This patch handles the pruning part of the cache, exposing
a few knobs:
- Pruning interval: the implementation keeps a "timestamp" file in the
directory and will scan it only after a given interval since the
last modification of the timestamp file. This is for performance
purpose, we don't want to scan continuously the folder.
- Entry expiration: this is the time after which a file that hasn't
been used is remove from the cache.
- Maximum size: expressed in percentage of the available disk space,
it helps to avoid that we blow up the disk space.
http://reviews.llvm.org/D18422
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 265209
Provide a class to generate a SHA1 from a sequence of bytes, and
a convenience raw_ostream adaptor.
This will be used to provide a "build-id" by hashing the Module
block when writing bitcode. ThinLTO will use this information for
incremental build.
Reapply r265094 which was reverted in r265102 because it broke
MSVC bots (constexpr is not supported).
http://reviews.llvm.org/D16325
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 265107
This reverts commit r265096, r265095, and r265094.
Windows build is broken, and the validation does not pass.
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 265102
Provide a class to generate a SHA1 from a sequence of bytes, and
a convenience raw_ostream adaptor.
This will be used to provide a "build-id" by hashing the Module
block when writing bitcode. ThinLTO will use this information for
incremental build.
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 265094
Summary: Adapted from Boost::filesystem.
(This is a reapply by reverting commit r265080 and fixing the WinAPI part)
Differential Revision: http://reviews.llvm.org/D18467
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 265082
Summary: Adapted from Boost::filesystem.
(This is a reapply by reverting commit r265062 and fixing the WinAPI part)
Differential Revision: http://reviews.llvm.org/D18467
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 265068
The implementation is fairly obvious. This is preparation for using
some blobs in bitcode.
For clarity (and perhaps future-proofing?), I moved the call to
JumpToBit in BitstreamCursor::readRecord ahead of calling
MemoryObject::getPointer, since JumpToBit can theoretically (a) read
bytes, which (b) invalidates the blob pointer.
This isn't strictly necessary the two memory objects we have:
- The return of RawMemoryObject::getPointer is valid until the memory
object is destroyed.
- StreamingMemoryObject::getPointer is valid until the next chunk is
read from the stream. Since the JumpToBit call is only going ahead
to a word boundary, we'll never load another chunk.
However, reordering makes it clear by inspection that the blob returned
by BitstreamCursor::readRecord will be valid.
I added some tests for StreamingMemoryObject::getPointer and
BitstreamCursor::readRecord.
llvm-svn: 264549
the rename operation on 3 error conditions of ReplaceFileW() that it was
previously bailing out on.
Patch by Douglas Yung!
Differential Revision: http://reviews.llvm.org/D17903
llvm-svn: 264477
Optimize output of MDStrings in bitcode. This emits them in big blocks
(currently 1024) in a pair of records:
- BULK_STRING_SIZES: the sizes of the strings in the block, and
- BULK_STRING_DATA: a single blob, which is the concatenation of all
the strings.
Inspired by Mehdi's similar patch, http://reviews.llvm.org/D18342, this
should (a) slightly reduce bitcode size, since there is less record
overhead, and (b) greatly improve reading speed, since blobs are super
cheap to deserialize.
I needed to add support for blobs to streaming input to get the test
suite passing.
- StreamingMemoryObject::getPointer reads ahead and returns the
address of the blob.
- To avoid a possible reallocation of StreamingMemoryObject::Bytes,
BitstreamCursor::readRecord needs to move the call to JumpToEnd
forward so that getPointer is the last bitstream operation.
llvm-svn: 264409
Differential Revision: http://reviews.llvm.org/D18456
This is a re-commit of r264387 and r264388 after fixing a typo.
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 264392
This reverts commit r264387.
Bots are broken in various ways, I need to take one commit at a time...
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 264390
Zachary Turner