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Commit Graph

1133 Commits

Author SHA1 Message Date
Serge Guelton
b20ef5f960 Replace llvm::isPodLike<...> by llvm::is_trivially_copyable<...>
As noted in https://bugs.llvm.org/show_bug.cgi?id=36651, the specialization for
isPodLike<std::pair<...>> did not match the expectation of
std::is_trivially_copyable which makes the memcpy optimization invalid.

This patch renames the llvm::isPodLike trait into llvm::is_trivially_copyable.
Unfortunately std::is_trivially_copyable is not portable across compiler / STL
versions. So a portable version is provided too.

Note that the following specialization were invalid:

    std::pair<T0, T1>
    llvm::Optional<T>

Tests have been added to assert that former specialization are respected by the
standard usage of llvm::is_trivially_copyable, and that when a decent version
of std::is_trivially_copyable is available, llvm::is_trivially_copyable is
compared to std::is_trivially_copyable.

As of this patch, llvm::Optional is no longer considered trivially copyable,
even if T is. This is to be fixed in a later patch, as it has impact on a
long-running bug (see r347004)

Note that GCC warns about this UB, but this got silented by https://reviews.llvm.org/D50296.

Differential Revision: https://reviews.llvm.org/D54472

llvm-svn: 351701
2019-01-20 21:19:56 +00:00
Chandler Carruth
43ee626c3c Update more file headers across all of the LLVM projects in the monorepo
to reflect the new license. These used slightly different spellings that
defeated my regular expressions.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351648
2019-01-19 10:56:40 +00:00
Chandler Carruth
ae65e281f3 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Rui Ueyama
df5b37b8a6 Remove F_modify flag from FileOutputBuffer.
This code is dead. There is no use of the feature in the entire LLVM codebase.

Differential Revision: https://reviews.llvm.org/D56939

llvm-svn: 351613
2019-01-19 00:07:57 +00:00
Pavel Labath
a203e4cb0a [Support] Remove error return value from one overload of fs::make_absolute
Summary:
The version of make_absolute which accepted a specific directory to use
as the "base" for the computation could never fail, even though it
returned a std::error_code. The reason for that seems to be historical
-- the CWD flavour (which can fail due to failure to retrieve CWD) was
there first, and the new version was implemented by extending that.

This removes the error return value from the non-CWD overload and
reimplements the CWD version on top of that. This enables us to remove
some dead code where people were pessimistically trying to handle the
errors returned from this function.

Reviewers: zturner, sammccall

Subscribers: hiraditya, kristina, llvm-commits

Differential Revision: https://reviews.llvm.org/D56599

llvm-svn: 351317
2019-01-16 09:55:32 +00:00
Amara Emerson
f0e823c207 Revert "[VFS] Allow multiple RealFileSystem instances with independent CWDs."
This reverts commit r351079, r351069 and r351050 as it broken the greendragon bots on macOS.

llvm-svn: 351091
2019-01-14 18:32:09 +00:00
Sam McCall
caa0c6d86d [VFS] Disable unix-assuming VFS test on windows
llvm-svn: 351079
2019-01-14 17:51:10 +00:00
Sam McCall
db17649a16 [VFS] Allow multiple RealFileSystem instances with independent CWDs.
Summary:
Previously only one RealFileSystem instance was available, and its working
directory is shared with the process. This doesn't work well for multithreaded
programs that want to work with relative paths - the vfs::FileSystem is assumed
to provide the working directory, but a thread cannot control this exclusively.

The new vfs::createPhysicalFileSystem() factory copies the process's working
directory initially, and then allows it to be independently modified.

This implementation records the working directory path, and glues it to relative
paths to provide the correct absolute path to the sys::fs:: functions.
This will give different results in unusual situations (e.g. the CWD is moved).

The main alternative is the use of openat(), fstatat(), etc to ask the OS to
resolve paths relative to a directory handle which can be kept open. This is
more robust. There are two reasons not to do this initially:
1. these functions are not available on all supported Unixes, and are somewhere
   between difficult and unavailable on Windows. So we need a path-based
   fallback anyway.
2. this would mean also adding support at the llvm::sys::fs level, which is a
   larger project. My clearest idea is an OS-specific `BaseDirectory` object
   that can be optionally passed to functions there. Eventually this could be
   backed by either paths or a fd where openat() is supported.
   This is a large project, and demonstrating here that a path-based fallback
   works is a useful prerequisite.

There is some subtlety to the path-manipulation mechanism:
  - when setting the working directory, both Specified=makeAbsolute(path) and
    Resolved=realpath(path) are recorded. These may differ in the presence of
    symlinks.
  - getCurrentWorkingDirectory() and makeAbsolute() use Specified - this is
    similar to the behavior of $PWD and sys::path::current_path
  - IO operations like openFileForRead use Resolved. This is similar to the
    behavior of an openat() based implementation, that doesn't see changes
    in symlinks.
There may still be combinations of operations and FS states that yield unhelpful
behavior. This is hard to avoid with symlinks and FS abstractions :(

The caching behavior of the current working directory is removed in this patch.
getRealFileSystem() is now specified to link to the process CWD, so the caching
is incorrect.
The user who needed this so far is clangd, which will immediately switch to
createPhysicalFileSystem().

Reviewers: ilya-biryukov, bkramer, labath

Subscribers: ioeric, kadircet, kristina, llvm-commits

Differential Revision: https://reviews.llvm.org/D56545

llvm-svn: 351050
2019-01-14 10:56:35 +00:00
Thomas Preud'homme
30f7276059 Add support for prefix-only CLI options
Summary:
Add support for options that always prefix their value, giving an error
if the value is in the next argument or if the option is given a value
assignment (ie. opt=val). This is the desired behavior for the -D option
of FileCheck for instance.

Copyright:
- Linaro (changes in version 2 of revision D55940)
- GraphCore (changes in later versions and introduced when creating
  D56549)

Reviewers: jdenny

Subscribers: llvm-commits, probinson, kristina, hiraditya,
JonChesterfield

Differential Revision: https://reviews.llvm.org/D56549

llvm-svn: 351038
2019-01-14 09:28:53 +00:00
Evandro Menezes
1df9d07d1f [AArch64] Create feature set for Exynos M4
Complete the feature set for Exynos M4 and update test cases.

llvm-svn: 350953
2019-01-11 18:54:25 +00:00
Hubert Tong
d94977e132 [unittests][Support] AIX: Skip sticky bit file tests
On AIX, attempting (without root) to set the sticky bit on a file with
the `chmod` utility will give:
```
chmod: not all requested changes were made to <file>
```

The same occurs when modifying other permission bits on a file with the
sticky bit already set.

It seems that the `chmod` function will report success despite failing
to set the sticky bit.

llvm-svn: 350735
2019-01-09 16:00:39 +00:00
Diogo N. Sampaio
5698d0dddb [AArch64] Add command-line option predres
Prediction control instructions are only
mandatory from v8.5a onwards but is optional
from Armv8.0-A. This patch adds a command
line option to enable it by it's own.

Differential Revision: https://reviews.llvm.org/D56007

llvm-svn: 350385
2019-01-04 11:04:18 +00:00
Diogo N. Sampaio
d81b9d0b84 [ARM] Add command-line option for SB
SB (Speculative Barrier) is only mandatory from 8.5
onwards but is optional from Armv8.0-A. This patch adds a command
line option to enable SB, as it was previously only possible to
enable by selecting -march=armv8.5-a.

This patch also renames FeatureSpecRestrict to FeatureSB.

Reviewed By: olista01, LukeCheeseman

Differential Revision: https://reviews.llvm.org/D55990

llvm-svn: 350299
2019-01-03 12:09:12 +00:00
Diogo N. Sampaio
4f295fed38 [AArch64] Add command-line option for SB
SB (Speculative Barrier) is only mandatory from 8.5
onwards but is optional from Armv8.0-A. This patch adds a command
line option to enable SB, as it was previously only possible to
enable by selecting -march=armv8.5-a.

This patch also moves to FeatureSB the old FeatureSpecRestrict.

Reviewers: pbarrio, olista01, t.p.northover, LukeCheeseman	

Differential Revision: https://reviews.llvm.org/D55921

llvm-svn: 350126
2018-12-28 17:14:58 +00:00
Michael J. Spencer
faad5fda26 [VFS] Add isLocal to ProxyFileSystem and add unit tests.
Differential Revision: https://reviews.llvm.org/D55789

llvm-svn: 349410
2018-12-17 22:30:05 +00:00
David Spickett
1c096e5ec1 [NFC][AArch64] Remove duplicate Arch list in target parser tests
The list generated in the target parser tests is the
same as the one in the AArch64 target parser.
Use that one instead.

Differential Revision: https://reviews.llvm.org/D55509

llvm-svn: 348757
2018-12-10 14:26:06 +00:00
Pablo Barrio
72d3164a16 [AArch64] Add command-line option for SSBS
Summary:
SSBS (Speculative Store Bypass Safe) is only mandatory from 8.5
onwards but is optional from Armv8.0-A. This patch adds a command
line option to enable SSBS, as it was previously only possible to
enable by selecting -march=armv8.5-a.

Similar patch upstream in GNU binutils:
https://sourceware.org/ml/binutils/2018-09/msg00274.html

Reviewers: olista01, samparker, aemerson

Reviewed By: samparker

Subscribers: javed.absar, kristof.beyls, kristina, llvm-commits

Differential Revision: https://reviews.llvm.org/D54629

llvm-svn: 348137
2018-12-03 14:00:47 +00:00
Michael Platings
315dc073f7 Fix DynamicLibraryTests build on Windows when LLVM_EXPORT_SYMBOLS_FOR_PLUGINS is ON
extract_symbols.py (introduced in D18826) expects all of its library arguments
to be in the same directory - typically <config>/lib. DynamicLibraryLib.lib is
instead to be found in lib/<config>.
This patch intended to make DynamicLibraryLib.lib be created in <config>/lib
alongside most of the other libraries.

I previously tried passing absolute paths to extract_symbols.py but this
generated command lines that were too long for Visual Studio 2015: D54587

Differential Revision: https://reviews.llvm.org/D54701

llvm-svn: 347764
2018-11-28 15:19:55 +00:00
David Spickett
c8642ec8b2 [ARM, AArch64] Move ARM/AArch64 target parsers into
separate files to enable future changes.
    
This moves ARM and AArch64 target parsing into their
own files. They are still accessible through 
TargetParser.h as before.

Several functions in AArch64 which were just forwarders to ARM
have been removed. All except AArch64::getFPUName were unused,
and that was only used in a test. Which itself was overlapping
one in ARM, so it has also been removed.

Differential revision: https://reviews.llvm.org/D53980

llvm-svn: 347741
2018-11-28 11:38:10 +00:00
Simon Atanasyan
e970f782ec [unittests] Fix ExpandTilde test to match handling home dirs with trailing slash
The `expandTildeExpr` routine just replaces a tilde by a home dir path.
If the home dir has a trailing slash, the result of substitution will
contain double slashes. For example, `HOME=/foo/ ~/bar` gives `/foo//bar`.
That corresponds to (at least) Bash behaviour because the following
command `$HOME=/foo/ echo ~/bar` prints `/foo//bar`.

The `ExpandTilde` test constructs a path expected as the `fs::expand_tilde`
call result by calling `path::append` and the expected path has a single
slash. This patch fixes that and allows to pass the unittest on hosts where
the `HOME` is `/`.

Differential Revision: http://reviews.llvm.org/D54752

llvm-svn: 347346
2018-11-20 21:13:51 +00:00
Michal Gorny
64c9aad938 [unittest] Skip W+X MappedMemoryTests when MPROTECT is enabled
Skip all MappedMemoryTest variants that rely on memory pages being
mapped for MF_WRITE|MF_EXEC when MPROTECT is enabled on NetBSD.  W^X
protection causes all those mmap() calls to fail, causing the tests
to fail.

Differential Revision: https://reviews.llvm.org/D54080

llvm-svn: 347337
2018-11-20 18:38:11 +00:00
Michael Platings
2713ec208b Test commit - delete a trailing space.
llvm-svn: 347193
2018-11-19 12:10:07 +00:00
Volodymyr Sapsai
c0883288dd [VFS] Update unittest to fix Windows buildbot.
Buildbot http://lab.llvm.org:8011/builders/clang-x64-windows-msvc is failing
because it doesn't like paths in VFS, make them more Windows-friendly.

Follow up to r347009.

llvm-svn: 347016
2018-11-16 02:20:33 +00:00
Volodymyr Sapsai
68c72c533f [VFS] Implement RedirectingFileSystem::getRealPath.
It fixes the case when Objective-C framework is added as a subframework
through a symlink. When parent framework infers a module map and fails
to detect a symlink, it would add a subframework as a submodule. And
when we parse module map for the subframework, we would encounter an
error like

> error: umbrella for module 'WithSubframework.Foo' already covers this directory

By implementing `getRealPath` "an egregious but useful hack" in
`ModuleMap::inferFrameworkModule` works as expected.

rdar://problem/45821279

Reviewers: bruno, benlangmuir, erik.pilkington

Reviewed By: bruno

Subscribers: hiraditya, dexonsmith, JDevlieghere, cfe-commits, llvm-commits

Differential Revision: https://reviews.llvm.org/D54245

llvm-svn: 347009
2018-11-16 01:15:54 +00:00
Scott Linder
df484d50ec [Support] Teach YAMLIO about polymorphic types
Add support for "polymorphic" types to YAMLIO.

PolymorphicTraits can dynamically switch between other traits (Scalar, Map, or
Sequence). When inputting, the PolymorphicTraits type is told which type to
become, and when outputting the PolymorphicTraits type is asked which type it
currently is.

Also add support for TaggedScalarTraits to allow dynamically differentiating
between multiple scalar types using YAML tags.

Serialize empty maps as "{}" and empty sequences as "[]", so that types
are preserved when round-tripping PolymorphicTraits. This change has
equivalent semantics, but may break e.g. tests which compare output
verbatim.

Differential Revision: https://reviews.llvm.org/D48144

llvm-svn: 346884
2018-11-14 19:39:59 +00:00
Matthew Voss
717d083170 Make the ExpandTilde unit test expect "\" (not "/") on Win32
llvm-svn: 346813
2018-11-13 23:21:00 +00:00
Jonas Devlieghere
3b69685f49 [FileSystem] Add expand_tilde function
In D54435 there was some discussion about the expand_tilde flag for
real_path that I wanted to expose through the VFS. The consensus is that
these two things should be separate functions. Since we already have the
code for this I went ahead and added a function expand_tilde that does
just that.

Differential revision: https://reviews.llvm.org/D54448

llvm-svn: 346776
2018-11-13 18:23:32 +00:00
Jonas Devlieghere
681a56eed2 [Support] Make error banner optional in logAllUnhandledErrors
In a lot of places an empty string was passed as the ErrorBanner to
logAllUnhandledErrors. This patch makes that argument optional to
simplify the call sites.

llvm-svn: 346604
2018-11-11 01:46:03 +00:00
Bryan Chan
21e4975915 [AArch64] Support HiSilicon's TSV110 processor
Reviewers: t.p.northover, SjoerdMeijer, kristof.beyls

Reviewed By: kristof.beyls

Subscribers: olista01, javed.absar, kristof.beyls, kristina, llvm-commits

Differential Revision: https://reviews.llvm.org/D53908

llvm-svn: 346546
2018-11-09 19:32:08 +00:00
Sam McCall
0f672de003 Revert "[VFS] Add "expand tilde" argument to getRealPath."
This reverts commit r346453.
This is a complex change to a widely-used interface, and was not reviewed.

llvm-svn: 346500
2018-11-09 15:11:34 +00:00
Jonas Devlieghere
94677b4b80 [VFS] Add "expand tilde" argument to getRealPath.
Add an optional argument to expand tildes in the path to mirror llvm's
implementation of the corresponding function.

llvm-svn: 346453
2018-11-09 00:26:10 +00:00
Jonas Devlieghere
ee345d773c Extend virtual file system with isLocal method
Expose the `llvm::sys::fs::is_local` function through the VFS.

Differential revision: https://reviews.llvm.org/D54127

llvm-svn: 346372
2018-11-08 00:01:32 +00:00
Jonas Devlieghere
76999699d9 [VFS] Add support for "no_push" to VFS recursive iterators.
The "regular" file system has a useful feature that makes it possible to
stop recursing when using the recursive directory iterators. This
functionality was missing for the VFS recursive iterator and this patch
adds that.

Differential revision: https://reviews.llvm.org/D53465

llvm-svn: 345793
2018-10-31 23:36:10 +00:00
Volodymyr Sapsai
ee50d88516 [VFS] Add property 'fallthrough' that controls fallback to real file system.
Default property value 'true' preserves current behavior. Value 'false' can be
used to create VFS "root", file system that gives better control over which
files compiler can use during compilation as there are no unpredictable
accesses to real file system.

Non-fallthrough use case changes how we treat multiple VFS overlay
files. Instead of all of them being at the same level just above a real
file system, now they are nested and subsequent overlays can refer to
files in previous overlays.

rdar://problem/39465552

Reviewers: bruno, benlangmuir

Reviewed By: bruno

Subscribers: dexonsmith, cfe-commits, hiraditya

Differential Revision: https://reviews.llvm.org/D50539

llvm-svn: 345431
2018-10-26 22:14:33 +00:00
Sam McCall
efefaccc47 [Support] json::Value construction from std::vector<T> and std::map<string,T>.
Summary: Previously this required a conversion to json::Array/json::Object first.

Reviewers: ioeric

Subscribers: kristina, llvm-commits

Differential Revision: https://reviews.llvm.org/D53385

llvm-svn: 344732
2018-10-18 08:47:24 +00:00
Zachary Turner
03fa1d0375 Make YAML quote forward slashes.
If you have the string /usr/bin, prior to this patch it would not
be quoted by our YAML serializer.  But a string like C:\src would
be, due to the presence of a backslash.  This makes the quoting
rules of basically every single file path different depending on
the path syntax (posix vs. Windows).

While technically not required by the YAML specification to quote
forward slashes, when the behavior of paths is inconsistent it
makes it difficult to portably write FileCheck lines that will
work with either kind of path.

Differential Revision: https://reviews.llvm.org/D53169

llvm-svn: 344359
2018-10-12 16:31:20 +00:00
Zachary Turner
001c3c07a2 Revert "Make YAML quote forward slashes."
This reverts commit b86c16ad8c97dadc1f529da72a5bb74e9eaed344.

This is being reverted because I forgot to write a useful
commit message, so I'm going to resubmit it with an actual
commit message.

llvm-svn: 344358
2018-10-12 16:31:08 +00:00
Zachary Turner
00ac5d8257 Make YAML quote forward slashes.
llvm-svn: 344357
2018-10-12 16:24:09 +00:00
Jonas Devlieghere
702beb445a Lift VFS from clang to llvm (NFC)
This patch moves the virtual file system form clang to llvm so it can be
used by more projects.

Concretely the patch:
 - Moves VirtualFileSystem.{h|cpp} from clang/Basic to llvm/Support.
 - Moves the corresponding unit test from clang to llvm.
 - Moves the vfs namespace from clang::vfs to llvm::vfs.
 - Formats the lines affected by this change, mostly this is the result of
   the added llvm namespace.

RFC on the mailing list:
http://lists.llvm.org/pipermail/llvm-dev/2018-October/126657.html

Differential revision: https://reviews.llvm.org/D52783

llvm-svn: 344140
2018-10-10 13:27:25 +00:00
Joel Jones
46cc9d52d3 [AArch64] -mcpu=native CPU detection for Cavium processors
This small patch updates the CPU detection for Cavium processors when
-mcpu=native is passed on compile-line.

Patch by Stefan Teleman
Differential Revision: https://reviews.llvm.org/D51939

llvm-svn: 343897
2018-10-05 22:23:21 +00:00
Oliver Stannard
5a50eac9f3 [AArch64][v8.5A] Add MTE as an optional AArch64 extension
This adds the memory tagging extension, which is an optional extension
introduced in v8.5A. The new instructions and registers will be added by
subsequent patches.

Patch by Pablo Barrio!

Differential revision: https://reviews.llvm.org/D52486

llvm-svn: 343563
2018-10-02 09:36:28 +00:00
Sam McCall
d5feb48889 [Support] Listing a directory containing dangling symlinks is not an error.
Summary:
Reporting this as an error required stat()ing every file, as well as seeming
semantically questionable.

Reviewers: vsk, bkramer

Subscribers: mgrang, kristina, llvm-commits, liaoyuke

Differential Revision: https://reviews.llvm.org/D52648

llvm-svn: 343460
2018-10-01 12:17:05 +00:00
Peter Smith
f7ab544ae0 [ARM] Remove non-existent cpu arm1176j-s and use mpcore for v6k
The ARMTargetParser.def contains an entry for arm1176j-s which is the
default for the ArmV6K architecture. This cpu does not exist, there are
only arm1176jz-s and arm1176jzf-s and they are both architecture ArmV6KZ.
The only CPUs that are actually ArmV6K are the mpcore, mpcore_nofpu and
later revisions of the arm1136 family r1px (which we don't have a table
entry for).

This patch removes the arm1176j-s and makes mpcore the default for armv6k.

Differential Revision: https://reviews.llvm.org/D52594

llvm-svn: 343303
2018-09-28 09:04:27 +00:00
Oliver Stannard
d597eb64ea [AArch64][v8.5A] Add Armv8.5-A random number instructions
This adds two new system registers, used to generate random numbers.

This is an optional extension to v8.5-A, and will be controlled by the
"+rng" modifier of the -march= and -mcpu= options.

Patch by Pablo Barrio!

Differential revision: https://reviews.llvm.org/D52481

llvm-svn: 343217
2018-09-27 14:01:40 +00:00
Fangrui Song
c2791239be llvm::sort(C.begin(), C.end(), ...) -> llvm::sort(C, ...)
Summary: The convenience wrapper in STLExtras is available since rL342102.

Reviewers: dblaikie, javed.absar, JDevlieghere, andreadb

Subscribers: MatzeB, sanjoy, arsenm, dschuff, mehdi_amini, sdardis, nemanjai, jvesely, nhaehnle, sbc100, jgravelle-google, eraman, aheejin, kbarton, JDevlieghere, javed.absar, gbedwell, jrtc27, mgrang, atanasyan, steven_wu, george.burgess.iv, dexonsmith, kristina, jsji, llvm-commits

Differential Revision: https://reviews.llvm.org/D52573

llvm-svn: 343163
2018-09-27 02:13:45 +00:00
Oliver Stannard
1e7e30e85a [ARM/AArch64] Add target parser unit tests for Armv8.4-A
These were missed when adding Armv8.4-A support.

Patch by Pablo Barrio!

Differential revision: https://reviews.llvm.org/D52471

llvm-svn: 343106
2018-09-26 13:09:15 +00:00
Oliver Stannard
347bc189fb [ARM/AArch64][v8.5A] Add Armv8.5-A target
This patch allows targeting Armv8.5-A, adding the architecture to
tablegen and setting the options to be identical to Armv8.4-A for the
time being. Subsequent patches will add support for the different
features included in the Armv8.5-A Reference Manual.

Patch by Pablo Barrio!

Differential revision: https://reviews.llvm.org/D52470

llvm-svn: 343102
2018-09-26 12:48:21 +00:00
Nico Weber
ac548ddb6a Remove dead function user_cache_directory()
It's been unused since it was added almost 3 years ago in
https://reviews.llvm.org/D13801

Motivated by https://reviews.llvm.org/rL342002 since it removes one of the
functions keeping a ref to SHGetKnownFolderPath.

Differential Revision: https://reviews.llvm.org/D52184

llvm-svn: 342485
2018-09-18 15:06:16 +00:00
Richard Smith
fe3340dbd7 Fix a couple of mangling canonicalizer corner case bugs.
Summary:
The hash computed for an ArrayType was different when first constructed
versus when later profiled due to the constructor default argument, and
we were not tracking constructor / destructor variant as part of the
mangled name AST, leading to incorrect equivalences.

Reviewers: erik.pilkington

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D51463

llvm-svn: 342166
2018-09-13 20:00:21 +00:00
Richard Smith
052434485f Common infrastructure for reading a profile remapping file and building
a mangling remapper from it.

Differential Revision: https://reviews.llvm.org/D51246

llvm-svn: 342161
2018-09-13 18:51:44 +00:00