3738 Commits

Author SHA1 Message Date
Mehdi Amini
c0aec7f2f5 Revert "Add link-time detection of LLVM_ABI_BREAKING_CHECKS mismatch"
This reverts commit r287352, LLDB CI is broken.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287374 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-18 20:02:34 +00:00
Matthias Braun
9df5d1c65c Statistic/Timer: Include timers in PrintStatisticsJSON().
Differential Revision: https://reviews.llvm.org/D25588

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287370 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-18 19:43:24 +00:00
Matthias Braun
9262f00f1a Timer: Track name and description.
The previously used "names" are rather descriptions (they use multiple
words and contain spaces), use short programming language identifier
like strings for the "names" which should be used when exporting to
machine parseable formats.

Also removed a unused TimerGroup from Hexxagon.

Differential Revision: https://reviews.llvm.org/D25583

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287369 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-18 19:43:18 +00:00
Mehdi Amini
ed72617844 Add link-time detection of LLVM_ABI_BREAKING_CHECKS mismatch
Summary:
LLVM will define a symbol, either EnableABIBreakingChecks or
DisableABIBreakingChecks depending on the configuration setting for
LLVM_ABI_BREAKING_CHECKS.

The llvm-config.h header will add weak references to these symbols in
every clients that includes this header. This should ensure that
a mismatch triggers a link failure (or a load time failure for DSO).

On MSVC, the pragma "detect_mismatch" is used instead.

Reviewers: rnk, jroelofs

Subscribers: llvm-commits, mgorny

Differential Revision: https://reviews.llvm.org/D26841

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287352 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-18 17:28:10 +00:00
Pekka Jaaskelainen
744fcd8986 Add a little endian variant of TCE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287111 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-16 15:22:23 +00:00
Pavel Labath
a33f3dffef Remove TimeValue class
Summary:
All uses have been replaced by appropriate std::chrono types, and the class is
now unused.

Reviewers: zturner, mehdi_amini

Subscribers: llvm-commits, mgorny

Differential Revision: https://reviews.llvm.org/D26447

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287094 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-16 10:46:48 +00:00
Rui Ueyama
d7ba4fc63c Simplify identify_magic.
This patch defines a memcmp-ish helper function to simplify identify_magic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286928 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-15 01:57:05 +00:00
Rui Ueyama
baf920c9bc Add a file magic for CL.exe's object file created with /GL.
This patch makes it possible to identify object files created by CL.exe
with /GL option. Such file contains Microsoft proprietary intermediate
code instead of target machine code to do LTO.

I need this to print out user-friendly error message from LLD.

Differential Revision: https://reviews.llvm.org/D26645

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286919 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-15 00:54:54 +00:00
Bob Wilson
63165f6ae3 Use _Unwind_Backtrace on Apple platforms.
Darwin's backtrace() function does not work with sigaltstack (which was
enabled when available with r270395) — it does a sanity check to make
sure that the current frame pointer is within the expected stack area
(which it is not when using an alternate stack) and gives up otherwise.
The alternative of _Unwind_Backtrace seems to work fine on macOS, so use
that when backtrace() fails. Note that we then use backtrace_symbols_fd()
with the addresses from _Unwind_Backtrace, but I’ve tested that and it
also seems to work fine. rdar://problem/28646552

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286851 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-14 17:56:18 +00:00
Zachary Turner
fd3428261b [Support] Add StringRef::find_lower and contains_lower.
Differential Revision: https://reviews.llvm.org/D25299

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286724 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-12 17:17:12 +00:00
Zachary Turner
97dac2b41d [Support] Introduce llvm::formatv() function.
This introduces a new type-safe general purpose formatting
library.  It provides compile-time type safety, does not require
a format specifier (since the type is deduced), and provides
mechanisms for extending the format capability to user defined
types, and overriding the formatting behavior for existing types.

This patch additionally adds documentation for the API to the
LLVM programmer's manual.

Mailing List Thread:
http://lists.llvm.org/pipermail/llvm-dev/2016-October/105836.html

Differential Revision: https://reviews.llvm.org/D25587

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286682 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-11 23:57:40 +00:00
Matthias Braun
a46113773f Timer: Remove group-less NamedRegionTimer constructor.
The NamedRegionTimer initializer without a group name puts the Timer
into the "Misc" group and is (nearly) unused. Remove it.

The only user of this constructor appears to be the HexagonGenInsert pass,
which creates a counter without group to count the complete execution
time of that pass, however since every pass gets a counter by the
PassManager anyway this should be unnecessary. Also removed the
pointless TimerGroup there.

Differential Revision: https://reviews.llvm.org/D25582

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286524 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-10 23:36:44 +00:00
Zachary Turner
a6269f0326 Fix type ambiguity with std::max
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286498 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-10 20:35:21 +00:00
Zachary Turner
48fbf5cc1a [Support] Improve flexibility of binary blob formatter.
This makes it possible to indent a binary blob by a certain
number of bytes, and also makes some things more idiomatic.
Finally, it integrates this binary blob formatter into ScopedPrinter
which used to have its own implementation of this algorithm.

Differential Revision: https://reviews.llvm.org/D26477

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286495 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-10 20:16:45 +00:00
Pavel Labath
517cd170c3 Zero-initialize chrono duration objects
The default duration constructor does not zero-initialize the object, we need to
do that manually.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286359 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-09 11:43:57 +00:00
Greg Clayton
a20694002c Added the ability to dump hex bytes easily into a raw_ostream.
Unit tests were added to verify this functionality keeps working correctly.

Example output for raw hex bytes:
llvm::ArrayRef<uint8_t> Bytes = ...;
llvm::outs() << format_hex_bytes(Bytes);
554889e5 4881ec70 04000048 8d051002
00004c8d 05fd0100 004c8b0d d0020000

Example output for raw hex bytes with offsets:
llvm::outs() << format_hex_bytes(Bytes, 0x100000d10);
0x0000000100000d10: 554889e5 4881ec70 04000048 8d051002
0x0000000100000d20: 00004c8d 05fd0100 004c8b0d d0020000

Example output for raw hex bytes with ASCII with offsets:
llvm::outs() << format_hex_bytes_with_ascii(Bytes, 0x100000d10);
0x0000000100000d10: 554889e5 4881ec70 04000048 8d051002 |UH.?H.?p...H....|
0x0000000100000d20: 00004c8d 05fd0100 004c8b0d d0020000 |..L..?...L..?...|

The default groups bytes into 4 byte groups, but this can be changed to 1 byte:
llvm::outs() << format_hex_bytes(Bytes, 0x100000d10, 16 /*NumPerLine*/, 1 /*ByteGroupSize*/);
0x0000000100000d10: 55 48 89 e5 48 81 ec 70 04 00 00 48 8d 05 10 02
0x0000000100000d20: 00 00 4c 8d 05 fd 01 00 00 4c 8b 0d d0 02 00 00

llvm::outs() << format_hex_bytes(Bytes, 0x100000d10, 16 /*NumPerLine*/, 2 /*ByteGroupSize*/);
0x0000000100000d10: 5548 89e5 4881 ec70 0400 0048 8d05 1002
0x0000000100000d20: 0000 4c8d 05fd 0100 004c 8b0d d002 0000

llvm::outs() << format_hex_bytes(Bytes, 0x100000d10, 8 /*NumPerLine*/, 1 /*ByteGroupSize*/);
0x0000000100000d10: 55 48 89 e5 48 81 ec 70
0x0000000100000d18: 04 00 00 48 8d 05 10 02
0x0000000100000d20: 00 00 4c 8d 05 fd 01 00
0x0000000100000d28: 00 4c 8b 0d d0 02 00 00

https://reviews.llvm.org/D26405



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286316 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-09 00:15:54 +00:00
Sylvestre Ledru
20b341aa05 Fix memory leaks (coverity issues 1365586 & 1365591)
Reviewers: hfinkel

Subscribers: george.burgess.iv, malcolm.parsons, boris.ulasevich, llvm-commits

Differential Revision: https://reviews.llvm.org/D26347

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286223 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-08 10:00:45 +00:00
Tim Shen
c7524ad33d [APFloat] Make functions that produce APFloaat objects use correct semantics.
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
2016-11-06 07:38:37 +00:00
Alina Sbirlea
1aa9c9ac56 Correct mprotect page boundries to round up end page. Fixes PR30905.
Summary:
Update the boundries for mprotect.
Patch by Andrew Adams. Fixes PR30905.

Reviewers: loladiro, andrew.w.kaylor, chandlerc

Subscribers: abadams, llvm-commits

Differential Revision: https://reviews.llvm.org/D26312

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286032 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-05 04:22:15 +00:00
Peter Collingbourne
4ac35e8272 Support: Remove MemoryObject and DataStreamer interfaces.
These interfaces are no longer used.

Differential Revision: https://reviews.llvm.org/D26222

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285774 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-02 00:08:37 +00:00
Alex Bradbury
404c9d53b5 [RISCV] Recognise riscv32 and riscv64 in triple parsing code
This is the first in a series of 10 initial patches that incrementally add an 
MC layer for RISC-V to LLVM. See 
<http://lists.llvm.org/pipermail/llvm-dev/2016-August/103748.html> for more 
discussion.

Differential Revision: https://reviews.llvm.org/D23557


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285707 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-01 16:47:54 +00:00
Serge Pavlov
038b68a6a3 Allow resolving response file names relative to including file
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
2016-11-01 06:53:29 +00:00
NAKAMURA Takumi
37111b28b6 NativeFormatting.cpp: Fix build for mingw. Where would writePadding() be?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285509 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-29 23:14:18 +00:00
Tim Shen
b7f36bcf55 [APFloat] Remove the redundent function body of uninitialized ctor, which should be done in r285468
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285486 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-29 00:51:41 +00:00
Zachary Turner
b53c2b0d14 Resubmit "Add support for advanced number formatting."
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
2016-10-29 00:27:22 +00:00
Adrian Prantl
214910706d Refactor DW_LNE_* into Dwarf.def
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285475 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-28 22:57:02 +00:00
Adrian Prantl
64660bf6ba Refactor DW_LNS_* into Dwarf.def
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285474 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-28 22:56:59 +00:00
Adrian Prantl
832e271e1a Refactor DW_APPLE_PROPERTY_* into Dwarf.def
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285473 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-28 22:56:56 +00:00
Adrian Prantl
3807607f5e Refactor DW_CFA_* into Dwarf.def
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285472 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-28 22:56:53 +00:00
Adrian Prantl
b292fb2c9b Refactor all DW_FORM_* constants into Dwarf.def
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285470 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-28 22:56:45 +00:00
Tim Shen
88ccb3e4ac [APFloat] Fix memory bugs revealed by MSan
Reviewers: eugenis, hfinkel, kbarton, iteratee, echristo

Subscribers: mehdi_amini, llvm-commits

Differential Revision: https://reviews.llvm.org/D26102

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285468 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-28 22:45:33 +00:00
Adrian Prantl
f2e1fce7b1 Move the DWARF attribute constants into Dwarf.def and delete 300 lines of silly code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285425 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-28 18:21:39 +00:00
Adrian Prantl
9fd3a76f78 Import/update constants from the DWARF 5 public review draft document.
https://reviews.llvm.org/D26051

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285421 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-28 17:59:50 +00:00
Tim Shen
f95be0d257 Reapply r285351 "[APFloat] Add DoubleAPFloat mode to APFloat. NFC." with
a workaround for old clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285358 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-27 22:52:40 +00:00
Tim Shen
441030d026 Revert "[APFloat] Add DoubleAPFloat mode to APFloat. NFC."
This reverts r285351, since it breaks the build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285354 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-27 21:54:29 +00:00
Tim Shen
4cdbd20e4e [APFloat] Add DoubleAPFloat mode to APFloat. NFC.
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
2016-10-27 21:39:51 +00:00
Victor Leschuk
0ab9364cdd DebugInfo: support for DWARFv5 DW_AT_alignment attribute
* 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
2016-10-26 11:59:03 +00:00
Vassil Vassilev
1df4f64ba6 Revert r285181 "DebugInfo: support for DWARFv5 DW_AT_alignment attribute".
The commit broke the builds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285183 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-26 10:13:47 +00:00
Victor Leschuk
de2f92b5ef DebugInfo: support for DWARFv5 DW_AT_alignment attribute
* 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
2016-10-26 08:55:27 +00:00
Tim Shen
6141ab42f4 [APFloat] Make APFloat an interface class to the internal IEEEFloat. NFC.
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
2016-10-25 19:55:59 +00:00
Simon Pilgrim
9ff4a73e67 Removed FIXME from include ordering comment
Nothing to fix, it's just the way it has to be.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284991 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-24 17:15:05 +00:00
Pavel Labath
f62fc7a377 [Chrono] Fix !HAVE_FUTIMENS build
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
2016-10-24 14:19:28 +00:00
Simon Pilgrim
39e6b3908d Fix windows builds by swapping windows.h and wincrypt.h ordering.
We need to include windows.h first even though it breaks default include ordering rules

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284968 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-24 12:39:23 +00:00
Pavel Labath
2864c2ae90 Remove TimeValue usage from llvm/Support
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
2016-10-24 10:59:17 +00:00
Benjamin Kramer
06d5a1641d Do a sweep over move ctors and remove those that are identical to the default.
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
2016-10-20 12:20:28 +00:00
Pavel Labath
911bb941ce Reapply "Add Chrono.h - std::chrono support header"
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
2016-10-20 12:05:50 +00:00
Reid Kleckner
5b1c9f3223 Remove LLVM_NOEXCEPT and replace it with noexcept
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
2016-10-19 23:52:38 +00:00
Mehdi Amini
2bd75068e1 Add computeHostNumPhysicalCores() implementation for Darwin
Differential Revision: https://reviews.llvm.org/D25800

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284656 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-19 22:36:07 +00:00
Pavel Labath
b40b8e3413 Revert "Add Chrono.h - std::chrono support header"
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
2016-10-19 17:17:53 +00:00
Pavel Labath
bca3cda284 Add Chrono.h - std::chrono support header
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
2016-10-19 13:58:55 +00:00