Summary:
Fixes PR30869.
In D25977 I meant to change all functions that care about lifetime. I
changed constructors, factory functions, but I missed member/free
functions that return new instances. This patch changes them.
Reviewers: hfinkel, kbarton, echristo, joerg
Subscribers: llvm-commits, mehdi_amini
Differential Revision: https://reviews.llvm.org/D26269
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286060 91177308-0d34-0410-b5e6-96231b3b80d8
If a response file included by construct @file itself includes a response file
and that file is specified by relative file name, current behavior is to resolve
the name relative to the current working directory. The change adds additional
flag to ExpandResponseFiles that may be used to resolve nested response file
names relative to including file. With the new mode a set of related response
files may be kept together and reference each other with short position
independent names.
Differential Revision: https://reviews.llvm.org/D24917
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285675 91177308-0d34-0410-b5e6-96231b3b80d8
This resubmits r284436 and r284437, which were reverted in
r284462 as they were breaking the AArch64 buildbot.
The breakage on AArch64 turned out to be a miscompile which is
still not fixed, but is actively tracked at llvm.org/pr30748.
This resubmission re-writes the code in a way so as to make the
miscompile not happen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285483 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This patch adds DoubleAPFloat mode to APFloat.
Now, an APFloat with semantics PPCDoubleDouble will have DoubleAPFloat layout
(APFloat.U.Double), which contains two underlying APFloats as
PPCDoubleDoubleImpl and IEEEdouble semantics. Currently the IEEEdouble APFloat
is not used, and the first APFloat behaves exactly the same before this change.
This patch consists of three kinds of logics:
1) Construction and destruction of APFloat. Now the ctors, dtor, assign
opertors and factory functions construct different underlying layout
based on the semantics passed in.
2) s/IEEE/getIEEE()/ for normal, lifetime-unrelated computation functions.
These functions only access Floats[0] in DoubleAPFloat, which is the
same as today's semantic.
3) A "Double dispatch" function, APFloat::convert. Converting between two
different layouts requires appropriate logic.
Neither of these change the external behavior.
Reviewers: hfinkel, kbarton, echristo, iteratee
Subscribers: mehdi_amini, llvm-commits
Differential Revision: https://reviews.llvm.org/D25977
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285351 91177308-0d34-0410-b5e6-96231b3b80d8
* Assume that clang passes non-zero alignment value to DIBuilder
only in case when it was forced by C++11 'alignas', C11 '_Alignas'
or compiler attribute '__attribute__((aligned (N)))'.
* Emit DW_AT_alignment if alignment is specified for type/object.
Differential Revision: https://reviews.llvm.org/D24425
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285189 91177308-0d34-0410-b5e6-96231b3b80d8
* Assume that clang passes non-zero alignment value to DIBuilder
only in case when it was forced by C++11 'alignas', C11 '_Alignas'
or compiler attribute '__attribute__((aligned (N)))'.
* Emit DW_AT_alignment if alignment is specified for type/object.
Differential Revision: https://reviews.llvm.org/D24425
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285181 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
The intention is to make APFloat an interface class, so that later I can add a second implementation class DoubleAPFloat to correctly implement PPCDoubleDouble semantic. The interface of IEEEFloat is not public, and can be simplified (currently it's exactly the same as the old APFloat), but that belongs to a separate patch.
DoubleAPFloat should look like:
class DoubleAPFloat {
const fltSemantics *Semantics;
std::unique_ptr<APFloat> APFloats; // Two heap-allocated APFloats.
};
There is no functional change, nor public interface change.
Reviewers: hfinkel, chandlerc, iteratee, echristo, kbarton
Subscribers: llvm-commits, mehdi_amini
Differential Revision: https://reviews.llvm.org/D25536
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285105 91177308-0d34-0410-b5e6-96231b3b80d8
If we don't have futimens(), we fall back to futimes(), which only supports
microsecond timestamps. In that case, we need to explicitly cast away the extra
precision in setLastModificationAndAccessTime().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284977 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This is a follow-up to D25416. It removes all usages of TimeValue from
llvm/Support library (except for the actual TimeValue declaration), and replaces
them with appropriate usages of std::chrono. To facilitate this, I have added
small utility functions for converting time points and durations into appropriate
OS-specific types (FILETIME, struct timespec, ...).
Reviewers: zturner, mehdi_amini
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D25730
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284966 91177308-0d34-0410-b5e6-96231b3b80d8
All of these existed because MSVC 2013 was unable to synthesize default
move ctors. We recently dropped support for it so all that error-prone
boilerplate can go.
No functionality change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284721 91177308-0d34-0410-b5e6-96231b3b80d8
This is a resubmission of r284590. The mingw build should be fixed now. The
problem was we were matching time_t with _localtime_64s, which was incorrect on
_USE_32BIT_TIME_T systems. Instead I use localtime_s, which should always
evaluate to the correct function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284720 91177308-0d34-0410-b5e6-96231b3b80d8
Now that we have dropped MSVC 2013, all supported compilers support
noexcept and we can drop this portability macro.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284672 91177308-0d34-0410-b5e6-96231b3b80d8
This reverts commit r284590 as it fails on the mingw buildbot. I think I know the
fix, but I cannot test it right now. Will reapply when I verify it works ok.
This reverts r284590.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284615 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
std::chrono mostly covers the functionality of llvm::sys::TimeValue and
lldb_private::TimeValue. This header adds a bit of utility functions and
typedefs, which make the usage of the library and porting code from TimeValues
easier.
Rationale:
- TimePoint typedef - precision of system_clock is implementation defined -
using a well-defined precision helps maintain consistency between platforms,
makes it interact better with existing TimeValue classes, and avoids cases
there a time point is implicitly convertible to a specific precision on some
platforms but not on others.
- system_clock::to_time_t only accepts time_points with the default system
precision (even though time_t has only second precision on all platforms we
support). To avoid the need for explicit casts, I have added a toTimeT()
wrapper function. toTimePoint(time_t) was not strictly necessary, but I have
added it for symmetry.
Reviewers: zturner, mehdi_amini
Subscribers: beanz, mgorny, llvm-commits, modocache
Differential Revision: https://reviews.llvm.org/D25416
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284590 91177308-0d34-0410-b5e6-96231b3b80d8
This reverts commits 284436 and 284437 because they still break AArch64 bots:
Value of: format_number(-10, IntegerStyle::Integer, 1)
Actual: "-0"
Expected: "-10"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284462 91177308-0d34-0410-b5e6-96231b3b80d8
This resubmits commits 284425 and r284428, which were reverted
in r284429 due to some infinite recursion caused by an incorrect
selection of function overloads. Reproduced the failure on Linux
using GCC 4.8.4, and confirmed that with the new patch the tests
path on GCC as well as MSVC. So hopefully this fixes everything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284436 91177308-0d34-0410-b5e6-96231b3b80d8
raw_ostream has not afforded a lot of flexibility in terms of
how to format numbers when outputting. Wrap this all up into
a set of low level helper functions that can be used to output
numbers with arbitrary precision, alignment, format, etc and
then update raw_ostream to use these functions.
This will be useful for upcoming improvements to llvm's string
formatting libraries, but are still useful independently.
Differential Revision: https://reviews.llvm.org/D25497
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284425 91177308-0d34-0410-b5e6-96231b3b80d8
Based on post-commit review for D25585/r284180, rename
hardware_physical_concurrency to heavyweight_hardware_concurrency,
to better reflect what type of tasks it should be used for and
to enable other systems to map this to something other than the
number of physical cores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284390 91177308-0d34-0410-b5e6-96231b3b80d8
Simplify this a little bit since the result is never used. It can be
added back easily enough if that changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284348 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This will be used by ThinLTO to set the amount of backend
parallelism, which performs better when restricted to the number
of physical cores (on X86 at least, where getHostNumPhysicalCores is
currently defined). If not available this falls back to
thread::hardware_concurrency.
Note I didn't add to the thread class since that is a typedef to
std::thread where available.
Reviewers: mehdi_amini
Subscribers: beanz, llvm-commits, mgorny
Differential Revision: https://reviews.llvm.org/D25585
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284180 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
For now I have only added support for x86_64 Linux, but other systems
can be added incrementally.
This is to be used for setting the default parallelism for ThinLTO
backends (instead of thread::hardware_concurrency which includes
hyperthreading and is too aggressive). I'll send this as a follow-on
patch, and it will fall back to hardware_concurrency when the new
getHostNumPhysicalCores returns -1 (when not supported for a given
host system).
I also added an interface to MemoryBuffer to force reading a file
as a stream - this is required for /proc/cpuinfo which is a special
file that looks like a normal file but appears to have 0 size.
The existing readers of this file in Host.cpp are reading the first
1024 or so bytes from it, because the necessary info is near the top.
But for the new functionality we need to be able to read the entire
file. I can go back and change the other readers to use the new
getFileAsStream as a follow-on patch since it seems much more robust.
Added a unittest.
Reviewers: mehdi_amini
Subscribers: beanz, mgorny, llvm-commits, modocache
Differential Revision: https://reviews.llvm.org/D25564
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284138 91177308-0d34-0410-b5e6-96231b3b80d8
