Commit Graph

4123 Commits

Author SHA1 Message Date
Jinsong Ji d28f86723f Re-land "[PowerPC] Remove QPX/A2Q BGQ/BGP CNK support"
This reverts commit bf544fa1c3.

Fixed the typo in PPCInstrInfo.cpp.
2020-07-28 14:00:11 +00:00
Jinsong Ji bf544fa1c3 Revert "[PowerPC] Remove QPX/A2Q BGQ/BGP CNK support"
This reverts commit adffce7153.

This is breaking test-suite, revert while investigation.
2020-07-27 21:07:00 +00:00
Jinsong Ji adffce7153 [PowerPC] Remove QPX/A2Q BGQ/BGP CNK support
Per RFC http://lists.llvm.org/pipermail/llvm-dev/2020-April/141295.html
no one is making use of QPX/A2Q/BGQ/BGP CNK anymore.

This patch remove the support of QPX/A2Q in llvm, BGQ/BGP in clang,
CNK support in openmp/polly.

Reviewed By: hfinkel

Differential Revision: https://reviews.llvm.org/D83915
2020-07-27 19:24:39 +00:00
Logan Smith a52aea0ba6 Use INTERFACE_COMPILE_OPTIONS to disable -Wsuggest-override for any target that links to gtest
This cleans up several CMakeLists.txt's where -Wno-suggest-override was manually specified. These test targets now inherit this flag from the gtest target.

Some unittests CMakeLists.txt's, in particular Flang and LLDB, are not touched by this patch. Flang manually adds the gtest sources itself in some configurations, rather than linking to LLVM's gtest target, so this fix would be insufficient to cover those cases. Similarly, LLDB has subdirectories that manually add the gtest headers to their include path without linking to the gtest target, so those subdirectories still need -Wno-suggest-override to be manually specified to compile without warnings.

Differential Revision: https://reviews.llvm.org/D84554
2020-07-27 08:37:01 -07:00
Logan Smith 77e0e9e17d Reapply "Try enabling -Wsuggest-override again, using add_compile_options instead of add_compile_definitions for disabling it in unittests/ directories."
add_compile_options is more sensitive to its location in the file than add_definitions--it only takes effect for sources that are added after it. This updated patch ensures that the add_compile_options is done before adding any source files that depend on it.

Using add_definitions caused the flag to be passed to rc.exe on Windows and thus broke Windows builds.
2020-07-22 17:50:19 -07:00
Logan Smith 97a0f80c46 Revert "Try enabling -Wsuggest-override again, using add_compile_options instead of add_compile_definitions for disabling it in unittests/ directories."
This reverts commit 388c9fb1af.
2020-07-22 15:07:01 -07:00
Logan Smith 388c9fb1af Try enabling -Wsuggest-override again, using add_compile_options instead of add_compile_definitions for disabling it in unittests/ directories.
Using add_compile_definitions caused the flag to be passed to rc.exe on Windows and thus broke Windows builds.
2020-07-22 14:19:34 -07:00
Michael Kruse 8b56b03f5a [Polly] Run polly-update-format. NFC. 2020-07-22 15:46:30 -05:00
Louis Dionne afa1afd410 [CMake] Bump CMake minimum version to 3.13.4
This upgrade should be friction-less because we've already been ensuring
that CMake >= 3.13.4 is used.

This is part of the effort discussed on llvm-dev here:

  http://lists.llvm.org/pipermail/llvm-dev/2020-April/140578.html

Differential Revision: https://reviews.llvm.org/D78648
2020-07-22 14:25:07 -04:00
Hans Wennborg 3eec657825 Revert "Enable -Wsuggest-override in the LLVM build" and the follow-ups.
After lots of follow-up fixes, there are still problems, such as
-Wno-suggest-override getting passed to the Windows Resource Compiler
because it was added with add_definitions in the CMake file.

Rather than piling on another fix, let's revert so this can be re-landed
when there's a proper fix.

This reverts commit 21c0b4c1e8.
This reverts commit 81d68ad27b.
This reverts commit a361aa5249.
This reverts commit fa42b7cf29.
This reverts commit 955f87f947.
This reverts commit 8b16e45f66.
This reverts commit 308a127a38.
This reverts commit 274b6b0c7a.
This reverts commit 1c7037a2a5.
2020-07-22 20:23:58 +02:00
Logan Smith 21c0b4c1e8 Disable -Wsuggest-override for all remaining unittests/ directories 2020-07-21 17:48:36 -07:00
Logan Smith 5d31d09f76 [polly][NFC] Add missing 'override's 2020-07-16 20:12:13 -07:00
serge-sans-paille 515bc8c155 Harmonize Python shebang
Differential Revision: https://reviews.llvm.org/D83857
2020-07-16 21:53:45 +02:00
Hans Wennborg 7ab7b979d2 Bump the trunk major version to 12
and clear the release notes.
2020-07-15 12:05:05 +02:00
mydeveloperday 7a1bcf9f9a [polly] NFC clang-format change following D83564 2020-07-12 18:58:53 +01:00
Michael Kruse c0bc995429 [Polly] Fix prevectorization of fused loops.
The schedule of a fused loop has one isl_space per statement, such that
a conversion to a isl_map fails. However, the prevectorization is
interested in the schedule space only: Converting to the non-union
representation only after extracting the schedule range fixes the problem.

This fixes llvm.org/PR46578
2020-07-10 16:42:03 -05:00
Michael Kruse 32bf468420 [Polly] Fix -polly-opt-isl -analyze
The member LastSchedule was never set, such that printScop would always
print "n/a" instead of the last schedule.

To ensure that the isl_ctx lives as least as long as the stored
schedule, also store a shared_ptr.

Also set the schedule tree output style to ISL_YAML_STYLE_BLOCK to avoid
printing everything on a single line.

`opt -polly-opt-isl -analyze` will be used in the next commit.
2020-07-10 16:42:03 -05:00
Roman Lebedev a2619a60e4
Reland "[ScalarEvolution] createSCEV(): recognize `udiv`/`urem` disguised as an `sdiv`/`srem`"
This reverts commit d3e3f36ff1,
which reverter the original commit 2c16100e6f,
but with polly tests now actually passing.
2020-07-06 18:00:22 +03:00
Arthur Eubanks b210c9899b [BasicAA] Replace -basicaa with -basic-aa in polly
Follow up to https://reviews.llvm.org/D82607.
2020-06-30 15:50:17 -07:00
Simon Pilgrim 74dc081ef2 Update polly tests to use -disable-basicaa to -disable-basic-aa
These were missed in rG4cd19a6e15120cb
2020-06-27 15:56:01 +01:00
Fangrui Song 6e11ed5205 Fix polly build after 8c2082e1dc 2020-06-25 14:39:08 -07:00
Christopher Tetreault b82a95f8bc [SVE] Eliminate calls to default-false VectorType::get() from polly
Reviewers: bollu, efriedma, david-arm, fpetrogalli, gchatelet

Reviewed By: fpetrogalli

Subscribers: tschuett, rkruppe, psnobl, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D80341
2020-05-29 10:04:06 -07:00
Eli Friedman f26bdb539e Make Value::getPointerAlignment() return an Align, not a MaybeAlign.
If we don't know anything about the alignment of a pointer, Align(1) is
still correct: all pointers are at least 1-byte aligned.

Included in this patch is a bugfix for an issue discovered during this
cleanup: pointers with "dereferenceable" attributes/metadata were
assumed to be aligned according to the type of the pointer.  This
wasn't intentional, as far as I can tell, so Loads.cpp was fixed to
stop making this assumption. Frontends may need to be updated.  I
updated clang's handling of C++ references, and added a release note for
this.

Differential Revision: https://reviews.llvm.org/D80072
2020-05-20 16:37:20 -07:00
Florian Hahn 7004a621a0 [Polly] Update ScalarEvolutionExpander.h include. 2020-05-20 12:21:32 +01:00
Eli Friedman 4f04db4b54 AllocaInst should store Align instead of MaybeAlign.
Along the lines of D77454 and D79968.  Unlike loads and stores, the
default alignment is getPrefTypeAlign, to match the existing handling in
various places, including SelectionDAG and InstCombine.

Differential Revision: https://reviews.llvm.org/D80044
2020-05-16 14:53:16 -07:00
Eli Friedman 1a6e4a2cf6 Fix polly tests after D79968. 2020-05-15 15:15:09 -07:00
Eli Friedman 4532a50899 Infer alignment of unmarked loads in IR/bitcode parsing.
For IR generated by a compiler, this is really simple: you just take the
datalayout from the beginning of the file, and apply it to all the IR
later in the file. For optimization testcases that don't care about the
datalayout, this is also really simple: we just use the default
datalayout.

The complexity here comes from the fact that some LLVM tools allow
overriding the datalayout: some tools have an explicit flag for this,
some tools will infer a datalayout based on the code generation target.
Supporting this properly required plumbing through a bunch of new
machinery: we want to allow overriding the datalayout after the
datalayout is parsed from the file, but before we use any information
from it. Therefore, IR/bitcode parsing now has a callback to allow tools
to compute the datalayout at the appropriate time.

Not sure if I covered all the LLVM tools that want to use the callback.
(clang? lli? Misc IR manipulation tools like llvm-link?). But this is at
least enough for all the LLVM regression tests, and IR without a
datalayout is not something frontends should generate.

This change had some sort of weird effects for certain CodeGen
regression tests: if the datalayout is overridden with a datalayout with
a different program or stack address space, we now parse IR based on the
overridden datalayout, instead of the one written in the file (or the
default one, if none is specified). This broke a few AVR tests, and one
AMDGPU test.

Outside the CodeGen tests I mentioned, the test changes are all just
fixing CHECK lines and moving around datalayout lines in weird places.

Differential Revision: https://reviews.llvm.org/D78403
2020-05-14 13:03:50 -07:00
serge-sans-paille 8ceee08de1 Make Polly tests dependencies explicit
Due to libPolly now using the component infrastructure, it no longer carries all
dependencies as it used to do.

Differential Revision: https://reviews.llvm.org/D79295
2020-05-04 08:06:39 +02:00
serge-sans-paille e849e7a700 Use components instead of libraries in Polly linkage step
As a side effect, this tests (and fix a bug) in the compiler extension handling
of components.

Differential Revision: https://reviews.llvm.org/D78358
2020-04-28 09:44:10 +02:00
Michael Kruse 1ef55ac96e [Polly] Fix long loop due to unsigned warparound.
After the update to ISL to isl-0.22.1-87-gfee05a13 and its change of
isl_*_dim returning -1 instead of 0, the -1 got wrapped-around to
UINT_MAX because Polly often uses 'unsigned' type to represent
dimensions, as ISL did before this patch. This may happen in normal
executions after an out-of-quota.

Fix by catching the error-case earlier.
2020-04-27 12:15:56 -05:00
Simon Pilgrim 39f6f29613 [polly] Don't include PassSupport.h directly - include via Pass.h
Missed this in D78815
2020-04-26 15:51:32 +01:00
Eli Friedman 9b9454af8a Require "target datalayout" to be at the beginning of an IR file.
This will allow us to use the datalayout to disambiguate other
constructs in IR, like load alignment. Split off from D78403.

Differential Revision: https://reviews.llvm.org/D78413
2020-04-20 11:55:49 -07:00
Eli Friedman 4623c2ffa4 Fix interaction of static plugins with -DLLVM_LINK_LLVM_DYLIB=ON.
We should link static plugins into libLLVM.so; they shouldn't depend on
libLLVM.so.

Fixes https://bugs.llvm.org/show_bug.cgi?id=45571

Differential Revision: https://reviews.llvm.org/D78332
2020-04-17 11:49:05 -07:00
Josh Stone 5a0d8c31a3 [NFC] correct "thier" to "their" 2020-04-15 14:38:52 -07:00
Eli Friedman 89e0662dee Make IRBuilder automatically set alignment on load/store/alloca.
This is equivalent in terms of LLVM IR semantics, but we want to
transition away from using MaybeAlign to represent the alignment of
these instructions.

Differential Revision: https://reviews.llvm.org/D77984
2020-04-13 13:43:14 -07:00
Eli Friedman 3f13ee8a00 [NFC] Modernize misc. uses of Align/MaybeAlign APIs.
Use the current getAlign() APIs where it makes sense, and use Align
instead of MaybeAlign when we know the value is non-zero.
2020-04-06 17:53:04 -07:00
Kirill Naumov 3f995ce8b5 [CFGPrinter][CallPrinter][polly] Adding distinct structure for CFGDOTInfo
The patch introduces the system to distinctively store the information
needed for the Control Flow Graph as well as the instrumentary needed for
the follow-up changes: BlockFrequencyInfo and BranchProbabilityInfo.
The patch is a part of sequence of three patches, related to graphs Heat Coloring.

Reviewers: rcorcs, apilipenko, davidxl, sfertile, fedor.sergeev, eraman, bollu

Differential Revision: https://reviews.llvm.org/D76820
2020-04-06 17:42:54 +00:00
Michael Kruse 4dded1a7cb [Polly] Add -polly-isl-arg command line option.
The option is passed as argv to ISL's command line option parser.

Polly's own own command line options take precedence over options passed
as `-polly-isl-arg`. For instance,
`-polly-isl-arg=--schedule-outer-coincidence` will be ignored in favor
of `-polly-opt-outer-coincidence`.

Reviewed By: grosser

Differential Revision: https://reviews.llvm.org/D77303
2020-04-06 08:56:57 -05:00
Eli Friedman 3e5d671c19 [polly][opaque pointers] Remove use of deprecated APIs.
(See also D76269.)
2020-04-03 18:00:33 -07:00
Sylvestre Ledru 72fd1033ea Doc: Links should use https 2020-03-22 22:49:33 +01:00
Michael Kruse 0e93f3b0a0 [Polly] Replace use of std::stringstream. NFC.
Use of std::-style (io)streams is discouraged in the LLVM coding style
(https://llvm.org/docs/CodingStandards.html#include-iostream-is-forbidden).
Replace with a use of llvm::Twine (which uses llvm::raw_ostream behind
the scenes).
2020-03-09 11:35:34 -05:00
Eli Friedman 888b12b270 [polly] Don't count scops in a global variable.
This can cause issues with thread safety.

Differential Revision: https://reviews.llvm.org/D75089
2020-02-24 17:12:08 -08:00
Shoaib Meenai e34ddc09f4 [arcconfig] Delete subproject arcconfigs
From https://secure.phabricator.com/book/phabricator/article/arcanist_new_project/:

> An .arcconfig file is a JSON file which you check into your project's root.

I've done some experimentation, and it looks like the subproject
.arcconfigs just get ignored, as the documentation says. Given that
we're fully on the monorepo now, it's safe to remove them.

Differential Revision: https://reviews.llvm.org/D74996
2020-02-24 16:20:36 -08:00
Bardia Mahjour cf9dae122e [NFC] [DA] Refactoring getIndexExpressionsFromGEP
Summary:
This patch moves the getIndexExpressionsFromGEP function from polly
into ScalarEvolution so that both polly and DependenceAnalysis can
use it for the purpose of subscript delinearization when the array
sizes are not parametric.

Authored By: bmahjour

Reviewer: Meinersbur, sebpop, fhahn, dmgreen, grosser, etiotto, bollu

Reviewed By: Meinersbur

Subscribers: hiraditya, arphaman, Whitney, ppc-slack, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D73995
2020-02-24 17:32:30 -05:00
Michael Kruse 6369b9bf31 [CMake] Default to static linking for subprojects.
Pass plugins introduced in D61446 do not support dynamic linking on
Windows, hence the option LLVM_${name_upper}_LINK_INTO_TOOLS can only
work being set to "ON". Currently, it defaults to "OFF" such that such
plugins are inoperable by default on Windows. Change the default for
subprojects to follow LLVM_ENABLE_PROJECTS.

Reviewed By: serge-sans-paille, MaskRay

Differential Revision: https://reviews.llvm.org/D72372
2020-02-24 11:54:08 -06:00
Michael Kruse 612c4bf09e [Polly] Run polly-update-format after commit 55cfb1. NFC. 2020-02-17 15:57:06 -06:00
Nikita Popov 3eaa53e805 Reapply "[IRBuilder] Virtualize IRBuilder"
Relative to the original commit, this fixes some warnings,
and is based on the deletion of the IRBuilder copy constructor
in D74693. The automatic copy constructor would no longer be
safe.

-----

Related llvm-dev thread:
http://lists.llvm.org/pipermail/llvm-dev/2020-February/138951.html

This patch moves the IRBuilder from templating over the constant
folder and inserter towards making both of these virtual.
There are a couple of motivations for this:

1. It's not possible to share code between use-sites that use
different IRBuilder folders/inserters (short of templating the code
and moving it into headers).
2. Methods currently defined on IRBuilderBase (which is not templated)
do not use the custom inserter, resulting in subtle bugs (e.g.
incorrect InstCombine worklist management). It would be possible to
move those into the templated IRBuilder, but...
3. The vast majority of the IRBuilder implementation has to live
in the header, because it depends on the template arguments.
4. We have many unnecessary dependencies on IRBuilder.h,
because it is not easy to forward-declare. (Significant parts of
the backend depend on it via TargetLowering.h, for example.)

This patch addresses the issue by making the following changes:

* IRBuilderDefaultInserter::InsertHelper becomes virtual.
  IRBuilderBase accepts a reference to it.
* IRBuilderFolder is introduced as a virtual base class. It is
 implemented by ConstantFolder (default), NoFolder and TargetFolder.
  IRBuilderBase has a reference to this as well.
* All the logic is moved from IRBuilder to IRBuilderBase. This means
  that methods can in the future replace their IRBuilder<> & uses
  (or other specific IRBuilder types) with IRBuilderBase & and thus
  be usable with different IRBuilders.
* The IRBuilder class is now a thin wrapper around IRBuilderBase.
  Essentially it only stores the folder and inserter and takes care
  of constructing the base builder.

What this patch doesn't do, but should be simple followups after this change:

* Fixing use of the inserter for creation methods originally defined
  on IRBuilderBase.
* Replacing IRBuilder<> uses in arguments with IRBuilderBase, where useful.
* Moving code from the IRBuilder header to the source file.

From the user perspective, these changes should be mostly transparent:
The only thing that consumers using a custom inserted may need to do is
inherit from IRBuilderDefaultInserter publicly and mark their InsertHelper
as public.

Differential Revision: https://reviews.llvm.org/D73835
2020-02-17 19:04:11 +01:00
Nikita Popov 55cfb1fb50 [Polly] Fix build after IRBuilder changes
Simply dropping the createPollyIRBuilder() function here, because
it doesn't do much. Also directly initialize Expander in
ScopExpander instead of going through the copy-constructor.
2020-02-17 19:02:50 +01:00
Nikita Popov af480e8c63 Revert "[IRBuilder] Virtualize IRBuilder"
This reverts commit 0765d3824d.
This reverts commit 1b04866a3d.

Relevant looking crashes observed on:
http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win
2020-02-16 17:01:10 +01:00
Nikita Popov 1b04866a3d [IRBuilder] Try to fix warnings
Try to fix -Wnon-virtual-dtor warnings that cause build failure
on clang-pcc64le-rhel.
2020-02-16 15:32:11 +01:00
Nikita Popov 0765d3824d [IRBuilder] Virtualize IRBuilder
Related llvm-dev thread:
http://lists.llvm.org/pipermail/llvm-dev/2020-February/138951.html

This patch moves the IRBuilder from templating over the constant
folder and inserter towards making both of these virtual.
There are a couple of motivations for this:

1. It's not possible to share code between use-sites that use
different IRBuilder folders/inserters (short of templating the code
and moving it into headers).
2. Methods currently defined on IRBuilderBase (which is not templated)
do not use the custom inserter, resulting in subtle bugs (e.g.
incorrect InstCombine worklist management). It would be possible to
move those into the templated IRBuilder, but...
3. The vast majority of the IRBuilder implementation has to live
in the header, because it depends on the template arguments.
4. We have many unnecessary dependencies on IRBuilder.h,
because it is not easy to forward-declare. (Significant parts of
the backend depend on it via TargetLowering.h, for example.)

This patch addresses the issue by making the following changes:

* IRBuilderDefaultInserter::InsertHelper becomes virtual.
  IRBuilderBase accepts a reference to it.
* IRBuilderFolder is introduced as a virtual base class. It is
 implemented by ConstantFolder (default), NoFolder and TargetFolder.
  IRBuilderBase has a reference to this as well.
* All the logic is moved from IRBuilder to IRBuilderBase. This means
  that methods can in the future replace their IRBuilder<> & uses
  (or other specific IRBuilder types) with IRBuilderBase & and thus
  be usable with different IRBuilders.
* The IRBuilder class is now a thin wrapper around IRBuilderBase.
  Essentially it only stores the folder and inserter and takes care
  of constructing the base builder.

What this patch doesn't do, but should be simple followups after this change:

* Fixing use of the inserter for creation methods originally defined
  on IRBuilderBase.
* Replacing IRBuilder<> uses in arguments with IRBuilderBase, where useful.
* Moving code from the IRBuilder header to the source file.

From the user perspective, these changes should be mostly transparent:
The only thing that consumers using a custom inserted may need to do is
inherit from IRBuilderDefaultInserter publicly and mark their InsertHelper
as public.

Differential Revision: https://reviews.llvm.org/D73835
2020-02-16 13:48:55 +01:00
Yuanfang Chen 4ad7685258 Revert "Revert "Reland "[Support] make report_fatal_error `abort` instead of `exit`"""
This reverts commit 80a34ae311 with fixes.

Previously, since bots turning on EXPENSIVE_CHECKS are essentially turning on
MachineVerifierPass by default on X86 and the fact that
inline-asm-avx-v-constraint-32bit.ll and inline-asm-avx512vl-v-constraint-32bit.ll
are not expected to generate functioning machine code, this would go
down to `report_fatal_error` in MachineVerifierPass. Here passing
`-verify-machineinstrs=0` to make the intent explicit.
2020-02-13 10:16:06 -08:00
Yuanfang Chen 17122ec10a Revert "Revert "Revert "Reland "[Support] make report_fatal_error `abort` instead of `exit`""""
This reverts commit bb51d24330.
2020-02-13 10:08:05 -08:00
Yuanfang Chen bb51d24330 Revert "Revert "Reland "[Support] make report_fatal_error `abort` instead of `exit`"""
This reverts commit 80a34ae311 with fixes.

On bots llvm-clang-x86_64-expensive-checks-ubuntu and
llvm-clang-x86_64-expensive-checks-debian only,
llc returns 0 for these two tests unexpectedly. I tweaked the RUN line a little
bit in the hope that LIT is the culprit since this change is not in the
codepath these tests are testing.
llvm\test\CodeGen\X86\inline-asm-avx-v-constraint-32bit.ll
llvm\test\CodeGen\X86\inline-asm-avx512vl-v-constraint-32bit.ll
2020-02-13 10:02:53 -08:00
Huihui Zhang aedda89f65 [NFC] Fix warning: comparison of integers of different signs.
../polly/lib/Transform/ScheduleOptimizer.cpp:812:54: warning: comparison of integers of different signs: 'isl_size' (aka 'int') and 'const unsigned int' [-Wsign-compare]
         isl_schedule_node_band_n_member(Node.get()) >
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
2020-02-11 14:46:09 -08:00
Michael Halkenhäuser 1e0be76e98 [Polly] LLVM OpenMP Backend -- Fix "static chunked" scheduling.
Static chunked OpenMP scheduling has not been treated correctly.
This patch fixes the problem that threads would not process their
(work-)chunks as intended.

Differential Revision: https://reviews.llvm.org/D61081
2020-02-11 12:51:35 -06:00
Michael Kruse 86500b3f1c [Polly][Docs] Fix wrong claim about optimization levels.
Thanks Justin Paston-Cooper for the report.
2020-02-10 20:14:40 -06:00
Michael Kruse d0240257cd [Polly] Silence mixed signed/unsigned comparison warnings. NFC.
ISL changed some return types from unsigned to
isl_size (typedef of int), which results in such warnings.
2020-02-10 19:03:08 -06:00
Michael Kruse e8227804ac [Polly] Update ISL to isl-0.22.1-87-gfee05a13.
The primary motivation is to fix an assertion failure in
isl_basic_map_alloc_equality:

    isl_assert(ctx, room_for_con(bmap, 1), return -1);

Although the assertion does not occur anymore, I could not identify
which of ISL's commits fixed it.

Compared to the previous ISL version, Polly requires some changes for this update

 * Since ISL commit
   20d3574 "perform parameter alignment by modifying both arguments to function"
   isl_*_gist_* and similar functions do not always align the paramter
   list anymore. This caused the parameter lists in JScop files to
   become out-of-sync. Since many regression tests use JScop files with
   a fixed parameter list and order, we explicitly call align_params to
   ensure a predictable parameter list.

 * ISL changed some return types to isl_size, a typedef of (signed) int.
   This caused some issues where the return type was unsigned int before:
   - No overload for std::max(unsigned,isl_size)
   - It cause additional 'mixed signed/unsigned comparison' warnings.
     Since they do not break compilation, and sizes larger than 2^31
     were never supported, I am going to fix it separately.

 * With the change to isl_size, commit
   57d547 "isl_*_list_size: return isl_size"
   also changed the return value in case of an error from 0 to -1. This
   caused undefined looping over isl_iterator since the 'end iterator'
   got index -1, never reached from the 'begin iterator' with index 0.

 * Some internal changes in ISL caused the number of operations to
   increase when determining access ranges to determine aliasing
   overlaps. In one test, this caused exceeding the default limit of
   800000. The operations-limit was disabled for this test.
2020-02-10 19:03:08 -06:00
Michael Kruse 84c934a5cb Silence compiler warning. NFC.
The idiom

    for (auto i = n - n; i < n; i += 1)

was intended to automatically derive the type of i from n
(signed/unsigned int) and avoid the 'mixed signed/unsigned comparison'
warning. However, almost-always-auto was never used in the LLVM coding
style (although we used it in Polly for some time) and I did never
intended to use this idiom upstream.

PVS Studio may warns about this idiom as 'warning: both sides of
operator are equivalent [misc-redundant-expression]'.

Remove the use of auto and directly use unsigned.

Also see http://llvm.org/PR44768
2020-02-10 11:38:22 -06:00
Michael Kruse 1a53b732e6 Compile-fix after StringRef's conversion operator has been made explicit.
Commit 777180a "[ADT] Make StringRef's std::string conversion operator explicit"
caused Polly's GPU code generator to not compile anymore. The rest of
Polly has already been fixed in commit
0257a9 "Fix polly build after StringRef change."
2020-02-05 22:28:05 -06:00
Krzysztof Parzyszek d4c8230a0f [Polly] Fix compilation after 105642af5eef: include PassManagerImpl.h 2020-02-04 08:22:22 -06:00
Eli Friedman 0257a9218b Fix polly build after StringRef change. 2020-01-28 19:44:20 -08:00
Eli Friedman 2f6b9edfa8 [AliasAnalysis] Add missing FMRB_* enums.
Previously, the enums didn't account for all the possible cases, which
could cause misleading results (particularly for a "switch" on
FunctionModRefBehavior).

Fixes regression in polly from recent patch to add writeonly to memset.

While I'm here, also fix a few dubious uses of the FMRB_* enum values.

Differential Revision: https://reviews.llvm.org/D73154
2020-01-28 15:47:08 -08:00
Guillaume Chatelet 07c9d53266 [Alignment][NFC] Use Align with CreateAlignedLoad
Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet, bollu

Subscribers: hiraditya, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D73449
2020-01-27 10:58:36 +01:00
Guillaume Chatelet 805c157e8a [Alignment][NFC] Deprecate Align::None()
Summary:
This is a follow up on https://reviews.llvm.org/D71473#inline-647262.
There's a caveat here that `Align(1)` relies on the compiler understanding of `Log2_64` implementation to produce good code. One could use `Align()` as a replacement but I believe it is less clear that the alignment is one in that case.

Reviewers: xbolva00, courbet, bollu

Subscribers: arsenm, dylanmckay, sdardis, nemanjai, jvesely, nhaehnle, hiraditya, kbarton, jrtc27, atanasyan, jsji, Jim, kerbowa, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D73099
2020-01-24 12:53:58 +01:00
Dominik Adamski 7154413567 [NFC][ScopBuilder] Move RecordedAssumptions vector to ScopBuilder
Scope of changes:

1) Moved RecordedAssumptions vector to ScopBuilder. RecordedAssumptions are used only for Scop constructions.
2) Moved definition of RecordedAssumptionsTy to ScopHelper. It is required both by ScopBuilder and SCEVAffinator.
3) Add new function recordAssumption to ScopHelper. One of its argument is a reference to RecordedAssumption vector. This function is used by ScopBuilder and SCEVAffinator.
4) All RecordedAssumptions are created by ScopBuilder. isl::pw_aff
objects for corresponding SCEVs are created inside ScopBuilder. Scop
functions do not record any assumptions. Scop can use isl::pw_aff
objects which were created by ScopBuilder.
5) Removed functions for handling RecordedAssumptions from Scop class.
6) Removed constness from getScopArrayInfo functions.
7) Replaced SCEVVisitor struct from SCEVAffinator with taylored version, which allow to pass pointer to RecordedAssumptions as function argument.

Differential Revision: https://reviews.llvm.org/D68056
2020-01-24 00:09:01 +01:00
Guillaume Chatelet 59f95222d4 [Alignment][NFC] Use Align with CreateAlignedStore
Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet, bollu

Subscribers: arsenm, jvesely, nhaehnle, hiraditya, kerbowa, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D73274
2020-01-23 17:34:32 +01:00
Eli Friedman d9e6196312 [polly] XFAIL memset_null.ll.
I'm working on a patch, but not sure how long it'll take.
2020-01-21 17:29:44 -08:00
David Blaikie 65eb74e94b PointerLikeTypeTraits: Standardize NumLowBitsAvailable on static constexpr rather than anonymous enum
This is (more?) usable by GDB pretty printers and seems nicer to write.

There's one tricky caveat that in C++14 (LLVM's codebase today) the
static constexpr member declaration is not a definition - so odr use of
this constant requires an out of line definition, which won't be
provided (that'd make all these trait classes more annoyidng/expensive
to maintain). But the use of this constant in the library implementation
is/should always be in a non-odr context - only two unit tests needed to
be touched to cope with this/avoid odr using these constants.

Based on/expanded from D72590 by Christian Sigg.
2020-01-16 15:30:50 -08:00
Hans Wennborg 5852475e2c Bump the trunk major version to 11
and clear the release notes.
2020-01-15 13:38:01 +01:00
serge-sans-paille 346de9b672 Fix several issues with compiler extensions
- Update documentation now that the move to monorepo has been made
- Do not tie compiler extension testing to LLVM_BUILD_EXAMPLES
- No need to specify LLVM libraries for plugins
- Add NO_MODULE option to match Polly specific requirements (i.e. building the
  module *and* linking it statically)
- Issue a warning when building the compiler extension with
  LLVM_BYE_LINK_INTO_TOOLS=ON, as it modifies the behavior of clang, which only
  makes sense for testing purpose.

Still mark llvm/test/Feature/load_extension.ll as XFAIL because of a
ManagedStatic dependency that's going to be fixed in a seperate commit.

Differential Revision: https://reviews.llvm.org/D72327
2020-01-10 10:10:20 +01:00
Christopher Tetreault 76ee0de00c [cmake] Use source-groups in Polly.
Configure CMake to setup source-groups for Polly. Source groups
describe how source files should be organized in IDEs. By default, all
headers are dumped into one folder under PollyCore and all source files
into another. On disk, these files are organized into folders, but this
isn't reflected in the IDE. This change uses CMake source groups to have
the IDE reflect the on disk layout. This will make it easier to visualize
the project structure for users of Visual Studio and XCode

Patch by Christopher Tetreault <ctetreau@quicinc.com>

Reviewed By: Meinersbur, grosser

Differential Revision: https://reviews.llvm.org/D72117
2020-01-07 14:20:06 -06:00
Mark de Wever 1d549cff48 [NFC] Fixes -Wrange-loop-analysis warnings
This avoids new warnings due to D68912 adds -Wrange-loop-analysis to -Wall.

Differential Revision: https://reviews.llvm.org/D72210
2020-01-06 17:37:41 +01:00
David Blaikie d45b394b3e Polly: Fix a tag type mismatch (struct/class) 2020-01-02 12:13:38 -08:00
serge_sans_paille 24ab9b537e Generalize the pass registration mechanism used by Polly to any third-party tool
There's quite a lot of references to Polly in the LLVM CMake codebase. However
the registration pattern used by Polly could be useful to other external
projects: thanks to that mechanism it would be possible to develop LLVM
extension without touching the LLVM code base.

This patch has two effects:

1. Remove all code specific to Polly in the llvm/clang codebase, replaicing it
   with a generic mechanism

2. Provide a generic mechanism to register compiler extensions.

A compiler extension is similar to a pass plugin, with the notable difference
that the compiler extension can be configured to be built dynamically (like
plugins) or statically (like regular passes).

As a result, people willing to add extra passes to clang/opt can do it using a
separate code repo, but still have their pass be linked in clang/opt as built-in
passes.

Differential Revision: https://reviews.llvm.org/D61446
2020-01-02 16:45:31 +01:00
Alexandre Ganea 92b68c1937 [polly][Support] Un-break polly tests
Previously, the polly unit tests were stuck in a infinite loop.
There was an edge case in StringRef::count() introduced by 9f6b13e5cc, where an empty 'Str' would cause the function to never exit.
Also fixed usage in polly.
2020-01-01 17:29:04 -05:00
Fangrui Song a36ddf0aa9 Migrate function attribute "no-frame-pointer-elim"="false" to "frame-pointer"="none" as cleanups after D56351 2019-12-24 16:27:51 -08:00
Fangrui Song 502a77f125 Migrate function attribute "no-frame-pointer-elim" to "frame-pointer"="all" as cleanups after D56351 2019-12-24 15:57:33 -08:00
Heejin Ahn 0133dc3983 [IR] Include more target specific intrinsic headers
After D71320, target-specific intrinsic headers should be included.
2019-12-14 19:19:35 -08:00
Heejin Ahn 5368f35efa [IR] Include target specific intrinsic headers
After D71320, target-specific intrinsic headers should be included.
2019-12-12 14:54:31 -08:00
Reid Kleckner 4c1a1d3cf9 Add missing includes needed to prune LLVMContext.h include, NFC
These are a pre-requisite to removing #include "llvm/Support/Options.h"
from LLVMContext.h: https://reviews.llvm.org/D70280
2019-11-14 15:23:15 -08:00
Michael Kruse f7b3ae65c8 [GPGPU] Fix depricated warning.
setAlignment(unsigned) was deprecated in commit:

0e62011df8
[Alignment][NFC] Remove dependency on GlobalObject::setAlignment(unsigned)
2019-11-14 15:24:52 -06:00
Michael Kruse 2c831971bf [GPGPU] Fix #includes.
Adapt for 05da2fe521 "Sink all InitializePasses.h includes" which
forgot the GPGPU files (presumably because POLLY_ENABLE_GPGPU_CODEGEN
is OFF by default).
2019-11-14 14:39:28 -06:00
Reid Kleckner 1dfede3122 Move CodeGenFileType enum to Support/CodeGen.h
Avoids the need to include TargetMachine.h from various places just for
an enum. Various other enums live here, such as the optimization level,
TLS model, etc. Data suggests that this change probably doesn't matter,
but it seems nice to have anyway.
2019-11-13 16:39:34 -08:00
Reid Kleckner 05da2fe521 Sink all InitializePasses.h includes
This file lists every pass in LLVM, and is included by Pass.h, which is
very popular. Every time we add, remove, or rename a pass in LLVM, it
caused lots of recompilation.

I found this fact by looking at this table, which is sorted by the
number of times a file was changed over the last 100,000 git commits
multiplied by the number of object files that depend on it in the
current checkout:
  recompiles    touches affected_files  header
  342380        95      3604    llvm/include/llvm/ADT/STLExtras.h
  314730        234     1345    llvm/include/llvm/InitializePasses.h
  307036        118     2602    llvm/include/llvm/ADT/APInt.h
  213049        59      3611    llvm/include/llvm/Support/MathExtras.h
  170422        47      3626    llvm/include/llvm/Support/Compiler.h
  162225        45      3605    llvm/include/llvm/ADT/Optional.h
  158319        63      2513    llvm/include/llvm/ADT/Triple.h
  140322        39      3598    llvm/include/llvm/ADT/StringRef.h
  137647        59      2333    llvm/include/llvm/Support/Error.h
  131619        73      1803    llvm/include/llvm/Support/FileSystem.h

Before this change, touching InitializePasses.h would cause 1345 files
to recompile. After this change, touching it only causes 550 compiles in
an incremental rebuild.

Reviewers: bkramer, asbirlea, bollu, jdoerfert

Differential Revision: https://reviews.llvm.org/D70211
2019-11-13 16:34:37 -08:00
Michael Kruse 7be6ec5fa2 [GPGPU] Fix regression test after 395124.
Commit 395124 "NVPTX: Don't insert an extra empty line at the end of the last section"
changed the length of the kernel payload. Update the regression test to the new binary size.
2019-11-13 06:20:17 +00:00
Michael Kruse 0aff3174dc [CodeGen] Fix getArrayAccessFor crashes as in bug 32534 with -polly-vectorizer=polly.
Root cause is VectorBlockGenerator::copyStmt iterates all instructions
in basic block, however some load instructions may be not unnecessary
thus removed by simplification. As a result, these load instructions
don't have a corresponding array.

Looking at BlockGenerator::copyBB, it only iterates instructions list
of ScopStmt. Given it must be a block type scop in case of
vectorization, I think we should do the same in
VectorBlockGenerator::copyStmt.

Patch by bin.narwal <bin.narwal@gmail.com>

Differential Revision: https://reviews.llvm.org/D70076
2019-11-12 13:58:28 -06:00
Stephan T. Lavavej 3a7a22445e [www] More HTTPS and outdated link fixes.
Resolves D69981.
2019-11-08 14:41:27 -08:00
Stephan T. Lavavej 2e4f1e112d [www] Change URLs to HTTPS.
This changes most URLs in llvm's html files to HTTPS. Most changes were
search-and-replace with manual verification; some changes were manual.
For a few URLs, the websites were performing redirects or had changed
their anchors; I fixed those up manually. This consistently uses the
official https://wg21.link redirector. This also strips trailing
whitespace and fixes a couple of typos.

Fixes D69363.

There are a very small number of dead links for which I don't know any
replacements (they are equally dead as HTTP or HTTPS):

https://llvm.org/cmds/llvm2cpp.html
https://llvm.org/devmtg/2010-11/videos/Grosser_Polly-desktop.mp4
https://llvm.org/devmtg/2010-11/videos/Grosser_Polly-mobile.mp4
https://llvm.org/devmtg/2011-11/videos/Grosser_PollyOptimizations-desktop.mov
https://llvm.org/devmtg/2011-11/videos/Grosser_PollyOptimizations-mobile.mp4
https://llvm.org/perf/db_default/v4/nts/22463
https://polly.llvm.org/documentation/memaccess.html
2019-10-24 13:25:15 -07:00
Guillaume Chatelet 22755e4ea8 Fix Polly
llvm-svn: 375421
2019-10-21 15:48:42 +00:00
Michael Kruse d72637f5cc [ScopBuilder] Fix bug 38358 by preserving correct order of ScopStmts.
ScopBuilder::buildEqivClassBlockStmts creates ScopStmts for instruction
groups in basic block and inserts these ScopStmts into Scop::StmtMap,
however, as described in llvm.org/PR38358, comment #5, StmtScops are
inserted into vector ScopStmt[BB] in wrong order.  As a result,
ScopBuilder::buildSchedule creates wrong order sequence node.

Looking closer to code, it's clear there is no equivalent classes with
interleaving isOrderedInstruction(memory access) instructions after
joinOrderedInstructions.  Afterwards, ScopStmts need to be created and
inserted in the original order of memory access instructions, however,
at the moment ScopStmts are inserted in the order of leader instructions
which are probably not memory access instructions.

The fix is simple with a standalone loop scanning
isOrderedInstruction(memory access) instructions in basic block and
inserting elements into LeaderToInstList one by one.  The patch also
removes double reversing operations which are now unnecessary.

New test preserve-equiv-class-order-in-basic_block.ll is also added.

Differential Revision: https://reviews.llvm.org/D68941

llvm-svn: 375192
2019-10-17 23:55:35 +00:00
Guillaume Chatelet 0e62011df8 [Alignment][NFC] Remove dependency on GlobalObject::setAlignment(unsigned)
Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet

Subscribers: arsenm, mehdi_amini, jvesely, nhaehnle, hiraditya, steven_wu, dexonsmith, dang, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68944

llvm-svn: 374880
2019-10-15 11:24:36 +00:00
Volodymyr Sapsai 109bfb7b32 [Polly] Fix formatting violation. NFC.
llvm-svn: 374504
2019-10-11 03:09:24 +00:00
Volodymyr Sapsai 126158f096 [Stats] More polly fixes following llvm::Statistic changes in r374490.
llvm-svn: 374501
2019-10-11 02:42:16 +00:00
Volodymyr Sapsai e90cc03a85 [Stats] Fix polly build due to change in llvm::Statistic constructor in r374490.
llvm-svn: 374497
2019-10-11 01:43:36 +00:00
Guillaume Chatelet d400d45150 [Alignment][NFC] Remove StoreInst::setAlignment(unsigned)
Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet, bollu, jdoerfert

Subscribers: hiraditya, asbirlea, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D68268

llvm-svn: 373595
2019-10-03 13:17:21 +00:00
Guillaume Chatelet ab11b9188d [Alignment][NFC] Remove AllocaInst::setAlignment(unsigned)
Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet

Subscribers: jholewinski, arsenm, jvesely, nhaehnle, eraman, hiraditya, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D68141

llvm-svn: 373207
2019-09-30 13:34:44 +00:00
Guillaume Chatelet 725efb35c7 [Alignment] Fix polly build
llvm-svn: 373199
2019-09-30 11:14:00 +00:00
Tim Northover 1249126c7c Revert "Update polly test for SCEV change."
The motivating SCEV change was reverted as incorrect.

llvm-svn: 373185
2019-09-30 07:47:08 +00:00
Michael Kruse 241b02e762 [CodeGen] Handle outlining of CopyStmts.
Since the removal of extensions nodes from schedule trees in r362257 it
is possible to emit parallel code for SCoPs containing
matrix-multiplications. However, the code looking for references used in
outlined statement was not prepared to handle CopyStmts introduced by
the matrix-matrix multiplication detection.

In this case, CopyStmts do not introduce references in addition to the
ones captured by MemoryAccesses, i.e. we change the assertion to accept
CopyStmts and add a regression test for this case.

This fixes llvm.org/PR43164

llvm-svn: 372188
2019-09-17 22:59:43 +00:00
Rainer Orth 570c50aa92 [Polly] Fix lib/Transform/ScheduleOptimizer.cpp compilation on Solaris
lib/Transform/ScheduleOptimizer.cpp fails to compile on Solaris, both on the 9.x
branch (first noticed when running test-release.sh without -no-polly) and on trunk:

  /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/tools/polly/lib/Transform/ScheduleOptimizer.cpp: In function ‘MicroKernelParamsTy getMicroKernelParams(const llvm::TargetTransformInfo*, polly::MatMulInfoTy)’:
  /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/tools/polly/lib/Transform/ScheduleOptimizer.cpp:914:62: error: call of overloaded ‘sqrt(long unsigned int)’ is ambiguous
    914 |       ceil(sqrt(Nvec * LatencyVectorFma * ThroughputVectorFma) / Nvec) * Nvec;
        |                                                              ^
  In file included from /usr/gcc/9/lib/gcc/x86_64-pc-solaris2.11/9.1.0/include-fixed/math.h:24,
                   from /usr/gcc/9/include/c++/9.1.0/cmath:45,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/include/llvm-c/DataTypes.h:28,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/include/llvm/Support/DataTypes.h:16,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/include/llvm/ADT/Hashing.h:47,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/include/llvm/ADT/ArrayRef.h:12,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/tools/polly/include/polly/ScheduleOptimizer.h:12,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/tools/polly/lib/Transform/ScheduleOptimizer.cpp:48:
  /usr/gcc/9/lib/gcc/x86_64-pc-solaris2.11/9.1.0/include-fixed/iso/math_iso.h:220:21: note: candidate: ‘long double std::sqrt(long double)’
    220 |  inline long double sqrt(long double __X) { return __sqrtl(__X); }
        |                     ^~~~
  /usr/gcc/9/lib/gcc/x86_64-pc-solaris2.11/9.1.0/include-fixed/iso/math_iso.h:186:15:
note: candidate: ‘float std::sqrt(float)’
    186 |  inline float sqrt(float __X) { return __sqrtf(__X); }
        |               ^~~~
  /usr/gcc/9/lib/gcc/x86_64-pc-solaris2.11/9.1.0/include-fixed/iso/math_iso.h:74:15:
note: candidate: ‘double std::sqrt(double)’
     74 | extern double sqrt __P((double));
        |               ^~~~
  /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/tools/polly/lib/Transform/ScheduleOptimizer.cpp:915:67:
error: call of overloaded ‘ceil(long unsigned int)’ is ambiguous
    915 |   int Mr = ceil(Nvec * LatencyVectorFma * ThroughputVectorFma / Nr);
        |                                                                   ^
  In file included from /usr/gcc/9/lib/gcc/x86_64-pc-solaris2.11/9.1.0/include-fixed/math.h:24,
                   from /usr/gcc/9/include/c++/9.1.0/cmath:45,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/include/llvm-c/DataTypes.h:28,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/include/llvm/Support/DataTypes.h:16,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/include/llvm/ADT/Hashing.h:47,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/include/llvm/ADT/ArrayRef.h:12,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/tools/polly/include/polly/ScheduleOptimizer.h:12,
                   from /var/llvm/llvm-9.0.0-rc4/rc4/llvm.src/tools/polly/lib/Transform/ScheduleOptimizer.cpp:48:
  /usr/gcc/9/lib/gcc/x86_64-pc-solaris2.11/9.1.0/include-fixed/iso/math_iso.h:196:21: note: candidate: ‘long double std::ceil(long double)’
    196 |  inline long double ceil(long double __X) { return __ceill(__X); }
        |                     ^~~~
  /usr/gcc/9/lib/gcc/x86_64-pc-solaris2.11/9.1.0/include-fixed/iso/math_iso.h:160:15:
note: candidate: ‘float std::ceil(float)’
    160 |  inline float ceil(float __X) { return __ceilf(__X); }
        |               ^~~~
  /usr/gcc/9/lib/gcc/x86_64-pc-solaris2.11/9.1.0/include-fixed/iso/math_iso.h:76:15:
note: candidate: ‘double std::ceil(double)’
     76 | extern double ceil __P((double));
        |               ^~~~

Fixed by adding casts to disambiguate, checked that it now compiles on both 
amd64-pc-solaris2.11 and sparcv9-sun-solaris2.11 and on x86_64-pc-linux-gnu.

Differential Revision: https://reviews.llvm.org/D67442

llvm-svn: 371825
2019-09-13 08:45:06 +00:00
Michael Kruse 87baae85cd [ScopBuilder] Skip getting leader when merging statements to close holes.
Function joinOrderedInstructions merges instructions when a leader is encountered twice.
It also notices that leaders in SeenLeaders may lose their leadership in previous merging,
and tries to handle the case using following code:

    Instruction *PrevLeader = UnionFind.getLeaderValue(SeenLeaders.back());

However, this is wrong because it always gets leader for the last element of SeenLeaders,
and I believe it's wrong even we get leader for Prev here.  As a result, Statements in cases
like the one in patch aren't merged as expected.  After investigation, I believe it's
unnecessary to get leader instruction at all.  This is based on fact: Although leaders in
SeenLeaders could lose leadership, they only lose to others in SeenLeaders, in other words,
one existing leader will be chosen as new leader of merged equivalent statements.  We can
take advantage of this and simply check if current leader equals to Prev and break merging
if it does.

The patch also adds a new test.

Patch by bin.narwal <bin.narwal@gmail.com>

Differential Revision: https://reviews.llvm.org/D67007

llvm-svn: 371801
2019-09-13 01:04:38 +00:00
Michael Kruse acbdd07de6 [DependenceInfo] Compute WAR dependence info using ISL kills. NFC.
When reading code of Dependences::calculateDependences, I noticed that
WAR is computed specifically by buildWAR.  Given ISL now
supports "kills" in approximate dataflow analysis, this patch takes
advantage of it.

This patch also cleans up a couple lines redundant codes.

Patch by bin.narwal <bin.narwal@gmail.com>

Differential Revision: https://reviews.llvm.org/D66741

llvm-svn: 370396
2019-08-29 18:55:55 +00:00
Michael Kruse 6220ce60de [ScopBuilder] Remove superfluous while loop in buildDomains. NFC.
The while loop iterating parent loop in ScopBuilder::buildDomains is
unnecessary because either L or LD are later unused, this is a simple
patch removing it.

Patch by bin.narwal <bin.narwal@gmail.com>

Differential Revision: https://reviews.llvm.org/D66698

llvm-svn: 370368
2019-08-29 14:42:41 +00:00
Michael Kruse 88fd2d0123 [ScopBuilder] Simplify main statement flag in buildEqivClassBlockStmts. NFC.
When reading code in ScopBuilder::buildEqivClassBlockStmts, I think the
main statement flag computation can be simplified, here is the patch.
It's based on two simple facts that:

  1. Instruction won't be removed once it's inserted into UnionFind.
  2. Main statement must be set if there is non-trivial statement besides the last one.

The patch also saves std::find call.

Patch by bin.narwal <bin.narwal@gmail.com>

Differential Revision: https://reviews.llvm.org/D66477

llvm-svn: 369972
2019-08-26 21:31:47 +00:00
Jonas Devlieghere 736259e342 [Polly] Migrate llvm::make_unique to std::make_unique
Now that we've moved to C++14, we no longer need the llvm::make_unique
implementation from STLExtras.h. This patch is a mechanical replacement
of (hopefully) all the llvm::make_unique instances across the monorepo.

Differential revision: https://reviews.llvm.org/D66259

llvm-svn: 368935
2019-08-14 22:28:12 +00:00
Michael Kruse cc0f0582c8 [Polly-ACC] Fix test after IR-printer change.
After r367755, even unnamed parameters are printed in IR dumps. Change
the test to expect te additional %0 in the line.

llvm-svn: 368763
2019-08-13 22:42:08 +00:00
Dominik Adamski a0438305d0 [NFC][ScopBuilder] Move buildDomains and its callees to ScopBuilder.
Scope of changes:

1) Moved buildDomains function to ScopBuilder class.
2) Moved buildDomainsWithBranchConstraints function to ScopBuilder class.
3) Moved propagateDomainConstraints to ScopBuilder class.
4) Moved propagateDomainConstraintsToRegionExit to ScopBuilder class.
5) Moved propagateInvalidStmtDomains to ScopBuilder class.
6) Moved getPredecessorDomainConstraints function to ScopBuilder class.
7) Moved addLoopBoundsToHeaderDomain function to ScopBuilder class.
8) Moved getPwAff function to ScopBuilder class.
9) Moved buildConditionSets functions to ScopBuilder class.
10) Added updateMaxLoopDepth, notifyErrorBlock, getOrInitEmptyDomain, isDomainDefined, setDomain functions to Scop class. They are used by ScopBuilder.
11) Moved helper functions: getRegionNodeBasicBlock, getRegionNodeSuccessor, containsErrorBlock, createNextIterationMap, collectBoundedParts, partitionSetParts, buildConditionSet to ScopBuilder.cpp file.

Differential Revision: https://reviews.llvm.org/D65729

llvm-svn: 368100
2019-08-06 21:51:18 +00:00
Dominik Adamski b169e58b31 [NFC][ScopBuilder] Move addUserAssumptions to ScopBuilder
Scope of changes:
1) Moved addUserAssumptions function to ScopBuilder class.
2) Moved buildConditionSets functions to polly namespace.
3) Moved getRepresentingInvariantLoadSCEV to public section of the Scop class

Differential Revision: https://reviews.llvm.org/D65241

llvm-svn: 368089
2019-08-06 21:25:35 +00:00
Fangrui Song d9b948b6eb Rename F_{None,Text,Append} to OF_{None,Text,Append}. NFC
F_{None,Text,Append} are kept for compatibility since r334221.

llvm-svn: 367800
2019-08-05 05:43:48 +00:00
Guillaume Chatelet d2b45f299e [Polly] Clang complains about missing virtual destructor
Summary: Feel free to reassign if needed.

Reviewers: mhalk, bollu, jdoerfert

Reviewed By: jdoerfert

Subscribers: jdoerfert, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D64786

llvm-svn: 366697
2019-07-22 15:34:27 +00:00
Eli Friedman c68dd359ae Update polly test for SCEV change.
r366419 adds nsw to more SCEV expressions, which allows polly to
make more aggressive assumptions about the input expressions.

llvm-svn: 366510
2019-07-18 22:35:45 +00:00
Hans Wennborg 8f5b44aead Bump the trunk version to 10.0.0svn
and clear the release notes.

llvm-svn: 366427
2019-07-18 11:51:05 +00:00
Dominik Adamski d0ac007f9a [NFC][ScopBuilder] Move buildSchedule and its callees to ScopBuilder or ScopHelper
Scope of changes:
1. Moved buildSchedule functions to ScopBuilder.
2. Moved combineInSequence function to ScopBuilder.
3. Moved mapToDimension function to ScopBuilder.
4. Moved LoopStackTy to ScopBuilder.
5. Moved getLoopSurroundingScop to ScopHelper.
6. Moved getNumBlocksInLoop to ScopHelper.
7. Moved getNumBlocksInRegionNode to ScopHelper.
8. Moved getRegionNodeLoop to ScopHelper.

Differential Revision: https://reviews.llvm.org/D64223

llvm-svn: 366377
2019-07-17 21:42:39 +00:00
Dominik Adamski eece5a9d31 [NFC][ScopBuilder]Move finalizeAccesses and its callees to ScopBuilder
Scope of changes:
1) Moved finalizeAccesses to ScopBuilder
2) Moved updateAccessDimensionality to ScopBuilder
3) Moved foldSizeConstantsToRight to ScopBuilder
4) Moved foldSizeConstantsToRight to ScopBuilder
5) Moved assumeNoOutOfBounds to ScopBuilder
6) Moved markFortranArrays to ScopBuilder
7) Added iterator range for AccessFunctions vector.

Differential Revision: https://reviews.llvm.org/D63794

llvm-svn: 366374
2019-07-17 21:25:18 +00:00
Dominik Adamski fdc61bce94 [NFC][ScopBuilder] Move addUserContext to ScopBuilder
Scope of changes:
1) Moved addUserContext to ScopBuilder.
2) Moved command line option UserContextStr to ScopBuilder.

Differential Revision: https://reviews.llvm.org/D63740

llvm-svn: 366266
2019-07-16 21:29:06 +00:00
Dominik Adamski 588fc9e756 [NFC][ScopBuilder] Move buildAliasChecks and its implementing methods to ScopBuilder
Scope of changes:
1) Moved buildAliasChecks to ScopBuilder.
2) Moved buildAliasGroup to ScopBuilder.
3) Moved buildAliasGroups to ScopBuilder.
4) Moved buildAliasGroupsForAccesses to ScopBuilder.
5) Moved splitAliasGroupsByDomain to ScopBuilder.
6) Moved addNonEmptyDomainConstraints to ScopBuilder.
7) Moved buildMinMaxAccess to ScopBuilder.
8) Moved calculateMinMaxAccess to ScopBuilder.
9) Moved getAccessDomain to ScopBuilder.
10) Moved command line options used only by buildAliasChecks functions to ScopBuilder.
11) Refactored buildAliasGroup function. Added addAliasGroup function to Scop class for pushing back calculated min/max accesses.
12) Added function incrementNumberOfAliasingAssumptions which increments number of statistic variable AssumptionsAliasing. AssumptionsAliasing variable is defined by STATISTIC macro inside ScopInfo.cpp and it is also used by function trackAssumption from Scop class.
13) Added reference to OptimizationRemarkEmitter to ScopBuilder class.
14) Moved calculateMinMaxAccess function to ScopBuilder class.

Differential Revision: https://reviews.llvm.org/D63693

llvm-svn: 366262
2019-07-16 21:10:45 +00:00
Dominik Adamski ddbb83732a [NFC][ScopBuilder] Move addRecordedAssumption to ScopBuilder
Scope of changes:
1) Moved addRecordedAssumptions to ScopBuilder.
2) Moved Assumption struct outside Scop class.
3) Refactored addRecordedAssumptions function. Replaced while loop by
for range loop.
4) Added function to clear processed Assumptions.

Differential Revision: https://reviews.llvm.org/D63572

llvm-svn: 366260
2019-07-16 20:51:04 +00:00
Dominik Adamski 46b84fa231 [ScopInfo][NFC] Add dot at the end of comment statement.
llvm-svn: 366134
2019-07-15 22:01:55 +00:00
Tim Northover 4bc20fa149 OpaquePtr: Update polly's calls to Loads.h API
The Loads.h API changed so that a Type parameter is now mandatory in
preparation for pointer types being opaque. Unfortunately I don't build
polly routinely and it still had some uses. This just provides the
(obvious) load type in each case.

llvm-svn: 365470
2019-07-09 12:13:31 +00:00
Michael Kruse 88afd75300 [test] Add wrap flags after D61934.
https://reviews.llvm.org/D61934, committed as r362687, r363540, r363364
and r363147, made some emitted instruction nus/nsw. Add these falgs to
Polly's regression tests.

This should fix
    Polly :: Isl/CodeGen/partial_write_in_region_with_loop.ll
    Polly :: Isl/CodeGen/scev_expansion_in_nonaffine.ll

llvm-svn: 363599
2019-06-17 19:17:07 +00:00
Michael Kruse 77bc3b6542 [ScopInliner] Register FunctionAnalysisManagerModuleProxy.
FunctionAnalysisManagerModuleProxy started to be used by the
AlwaysInlinerPass in r363287 and therefore had to be registered in the
New PassManager.

Should fix the regression tests
    Polly :: ScopInliner/invariant-load-func.ll
    Polly :: ScopInliner/simple-inline-loop.ll

llvm-svn: 363572
2019-06-17 16:01:40 +00:00
Michael Kruse 189abad128 [ScopBuilder] Move addInvariantLoads to ScopBuilder. NFC.
Moved addInvariantLoads and functions listed below to ScopBuilder:
isAParameter
canAlwaysBeHoisted

These functions were referenced only by getNonHoistableCtx.

Moved CLI parameter PollyAllowDereferenceOfAllFunctionParams to
ScopBuilder.

Added iterator range through InvariantEquivClasses.

Patch by Dominik Adamski <adamski.dominik@gmail.com>

Differential Revision: https://reviews.llvm.org/D63172

llvm-svn: 363216
2019-06-12 22:51:56 +00:00
Michael Kruse bb824c61a9 [ScopBuilder] Move getNonHoistableCtx to ScopBuilder. NFC.
This review is based on review: https://reviews.llvm.org/D62925 . It is
part of moving hoistInvariantLoads function and all functions referenced
only by hoistInvariantLoads to ScopBuilder.

Moved getNonHoistableCtx and functions listed below to ScopBuilder:
isRequiredInvariantLoad
hasNonHoistableBasePtrInScop
isAccessRangeTooComplex

These functions were referenced only by getNonHoistableCtx.

MaxDimensionsInAccessRange and MaxDisjunctsInDomain constant is marked
as extern and it is added to polly namespace. It is used by Scop and
ScopBuilder classes.

MaxDimensionsInAccessRange constant moved to ScopBuilder. It is not used
outside ScopBuilder.

Patch by Dominik Adamski <adamski.dominik@gmail.com>

Differential Revision: https://reviews.llvm.org/D63066

llvm-svn: 363214
2019-06-12 22:40:08 +00:00
Michael Kruse 549991e48c [ScopBuilder] Move hoistInvariantLoads to ScopBuilder. NFC.
Refactor Scop and ScopBuilder class:

1. Move hoistInvariantLoads function from Scop to ScopBuilder class.

2. Private functions (addInvariantLoads, getNonHoistableCtx) are moved
   to public section of Scop class. hoistInvariantLoads function
   references these functions. These functions will be moved to
   ScopBuilder as well in the next steps.

Patch by Dominik Adamski <adamski.dominik@gmail.com>

Differential Revision: https://reviews.llvm.org/D62925

llvm-svn: 363121
2019-06-12 04:23:05 +00:00
Michael Kruse bd9e810b23 [ScheduleTreeTransform] Silence compiler warning. NFC.
Use size_t for position which is the return type type ArrayRef::size()
it is compared to.

llvm-svn: 362724
2019-06-06 17:15:36 +00:00
Michael Kruse 06c801e153 [ScopBuilder] Move canonicalizeDynamicsBasePtrs from ScopInfo. NFC.
Refactor Scop and ScopBuilder class. Move canonicalizeDynamicsBasePtrs
and corresponding static functions from ScopInfo.cpp to ScopBuilder.cpp

Patch by Dominik Adamski <adamski.dominik@gmail.com>

Differential Revision: https://reviews.llvm.org/D62781

llvm-svn: 362554
2019-06-04 21:58:54 +00:00
Michael Kruse c16ab9dd88 [ScopBuilder] Move verifyInvariantLoads function from ScopInfo. NFC.
Refactor Scop and ScopBuilder class. Move verifyInvariantLoads from Scop
class to ScopBuilder class.

Patch by: Dominik Adamski <adamski.dominik@gmail.com>

Differential Revision: https://reviews.llvm.org/D62628

llvm-svn: 362258
2019-05-31 19:40:20 +00:00
Michael Kruse aa8a976174 [ScheduleOptimizer] Hoist extension nodes after schedule optimization.
Extension nodes make schedule trees are less flexible: Many operations,
such as rescheduling, do not work on such schedule trees with extension.
As such, some functionality such as determining parallel loops in isl's
AST are disabled.

Currently, only the pattern-matching generalized matrix-matrix
multiplication optimization adds extension nodes (to add copy-in
statements).

This patch removes all extension nodes as the last step of the schedule
optimization by hoisting the extension node's added domain up to the
root domain node. All following passes can assume that schedule trees
work without restrictions, including the parallelism test. Mark the
outermost loop of the optimized matrix-matrix multiplication as parallel
such that -polly-parallel is able to parallelize that loop.

Differential Revision: https://reviews.llvm.org/D58202

llvm-svn: 362257
2019-05-31 19:26:57 +00:00
Michael Kruse 26212da555 [ScopBuilder] Move buildInvariantEquivalenceClasses function from ScopInfo. NFC.
Refactor Scop and ScopBuilder class. Move
buildInvariantEquivalenceClasses function from Scop class to ScopBuilder
class.

Patch by: Dominik Adamski <adamski.dominik@gmail.com>

Differential Revision: https://reviews.llvm.org/D62351

llvm-svn: 361902
2019-05-28 23:47:55 +00:00
Michael Kruse 467069688d [DeLICM] Use polly::singleton to allow empty result.
isl_map_from_union_map cannot determine the map's space if the union_map
is empty. polly::singleton was designed for this case. We pass the
expected map space to avoid crashing in isl_map_from_union_map.

This fixes an issue found by the aosp buildbot. Thanks to Eli Friedman
for the reproducer.

llvm-svn: 361290
2019-05-21 19:18:26 +00:00
Michael Kruse c4c679c232 [CodeGen] Fix order of PHINode and MA Write generation.
At the end of a region statement, the PHINode must be generated
while the current IRBuilder's block is the region's exit node. For
obvious reasons: The PHINode references the region's exiting block.
A partial write would insert new control flow, i.e. insert new basic
blocks between the exiting blocks and the current block.

We fix this by generating the PHI nodes (region exit values) before
generating any MemoryAccess's stores.

This should fix the AOSP buildbot.

Reported-by: Eli Friedman <efriedma@quicinc.com>
llvm-svn: 361204
2019-05-20 22:31:09 +00:00
Michael Kruse ac5c8318d7 [DependenceInfo] Remove dead initialization. NFC.
Fix scan-analyzer issue:
Value stored to 'WARMemAccesses' during its initialization is never read

Patch by Dominik Adamski <adamski.dominik@gmail.com>

Signed-off-by: Dominik Adamski <adamski.dominik@gmail.com>
llvm-svn: 361196
2019-05-20 20:54:17 +00:00
Eli Friedman a0de66dd17 [polly] Fix non-determinism in IslNodeBuilder.
The iteration order of OutsideLoopIterations matters for
IslNodeBuilder::getReferencesInSubtree, which inserts the values from
the map into a SetVector, which is eventually used to construct the
type of the context for parallel loops.

llvm-svn: 360723
2019-05-14 23:01:19 +00:00
Eli Friedman 9b234b388d [Polly] Don't crash on invalid delinearization result.
In certain cases, it's possible for delinearization to decide one of the
array dimensions should be some function of an induction variable inside
the scop.  Make sure if this happens, we refuse to use those dimensions
for delinearization.

Usually, we end up rejecting the scop before it actually crashes, but it
looks like it's possible to slip past other checks in certain cases
involving smax expressions.

Fixes a crash that started showing up this week on the polly AOSP
builder.  As far as I can tell, this is a longstanding issue, though;
it was just exposed by better SCEV analysis of smin expressions.

Differential Revision: https://reviews.llvm.org/D61807

llvm-svn: 360708
2019-05-14 21:32:54 +00:00
Michael Kruse 2698390c68 [ZoneAlgo] Fix PHI inconsistency in invalid contexts.
PHI nodes (reads) could point to multiple instances of predecessor
blocks (PHI writes) when in an invalid context. Fix by removing PHI
instances that are in an invalid or ouside assumed context.

This fixes llvm.org/PR41656.

llvm-svn: 360454
2019-05-10 18:38:13 +00:00
Keno Fischer aa1b6f1cfb [polly][SCEV] Expand SCEV matcher cases for new smin/umin ops
These were added in rL360159, but I neglected to update polly at the
same time.

llvm-svn: 360238
2019-05-08 10:36:04 +00:00
Michael Kruse 031bb16556 Apply include-what-you-use #include removal suggestions. NFC.
This removes unused includes (and forward declarations) as
suggested by include-what-you-use. If a transitive include of a removed
include is required to compile a file, I added the required header (or
forward declaration if suggested by include-what-you-use).

This should reduce compilation time and reduce the number of iterative
recompilations when a header was changed.

llvm-svn: 357209
2019-03-28 20:19:49 +00:00
Nikita Popov 6d855ea024 [ConstantRange] Rename isWrappedSet() to isUpperWrapped()
Split out from D59749. The current implementation of isWrappedSet()
doesn't do what it says on the tin, and treats ranges like
[X, Max] as wrapping, because they are represented as [X, 0) when
using half-inclusive ranges. This also makes it inconsistent with
the semantics of isSignWrappedSet().

This patch renames isWrappedSet() to isUpperWrapped(), in preparation
for the introduction of a new isWrappedSet() method with corrected
behavior.

llvm-svn: 357107
2019-03-27 18:19:33 +00:00
Michael Kruse ea40d5b05b Moving ManagedMemoryRewritePass when hybrid option is selected
Compiling with -polly-target=hybrid was causing Polly to occur two times
in the pipeline. The reason was how the ManagedMemoryRewritePass was
registered in the pass manager. ManagedMemoryRewritePass being a
ModulePass was forcing all previous passes to get recomputed. This
commit avoids Polly to appear two times in the pipeline registering the
ManagedMemoryRewritePass later in the pass manager.

Patch by Lorenzo Chelini <l.chelini@icloud.com>

Differential Revision: https://reviews.llvm.org/D59263

llvm-svn: 356965
2019-03-25 23:26:59 +00:00
Michael Kruse 89251edefc [CodeGen] LLVM OpenMP Backend.
The ParallelLoopGenerator class is changed such that GNU OpenMP specific
code was removed, allowing to use it as super class in a
template-pattern. Therefore, the code has been reorganized and one may
not use the ParallelLoopGenerator directly anymore, instead specific
implementations have to be provided. These implementations contain the
library-specific code. As such, the "GOMP" (code completely taken from
the existing backend) and "KMP" variant were created.

For "check-polly" all tests that involved "GOMP": equivalents were added
that test the new functionalities, like static scheduling and different
chunk sizes. "docs/UsingPollyWithClang.rst" shows how the alternative
backend may be used.

Patch by Michael Halkenhäuser <michaelhalk@web.de>

Differential Revision: https://reviews.llvm.org/D59100

llvm-svn: 356434
2019-03-19 03:18:21 +00:00
James Y Knight ae2f951219 [opaque pointer types] Update calls to CreateCall to pass the function
type in lldb and polly.

llvm-svn: 353549
2019-02-08 19:30:46 +00:00
James Y Knight 5d71fc5d7b Adjust documentation for git migration.
This fixes most references to the paths:
 llvm.org/svn/
 llvm.org/git/
 llvm.org/viewvc/
 github.com/llvm-mirror/
 github.com/llvm-project/
 reviews.llvm.org/diffusion/

to instead point to https://github.com/llvm/llvm-project.

This is *not* a trivial substitution, because additionally, all the
checkout instructions had to be migrated to instruct users on how to
use the monorepo layout, setting LLVM_ENABLE_PROJECTS instead of
checking out various projects into various subdirectories.

I've attempted to not change any scripts here, only documentation. The
scripts will have to be addressed separately.

Additionally, I've deleted one document which appeared to be outdated
and unneeded:
  lldb/docs/building-with-debug-llvm.txt

Differential Revision: https://reviews.llvm.org/D57330

llvm-svn: 352514
2019-01-29 16:37:27 +00:00
Michal Gorny 3d80264f6d Fix/unify top comment in lib/Analysis/PolyhedralInfo.cpp
Change the top comment in PolyhedralInfo.cpp to use // instead of ///,
similarly to headers in other files.  This fixes the issue of copyright
line exceeding textwidth and triggering polly-check-format45 failure,
e.g. seen here:

http://lab.llvm.org:8011/builders/lldb-amd64-ninja-netbsd8/builds/18293/steps/run%20unit%20tests/logs/stdio

llvm-svn: 351808
2019-01-22 12:18:38 +00:00
Chandler Carruth 4a1b95bda0 Fix typos throughout the license files that somehow I and my reviewers
all missed!

Thanks to Alex Bradbury for pointing this out, and the fact that I never
added the intended `legacy` anchor to the developer policy. Add that
anchor too. With hope, this will cause the links to all resolve
successfully.

llvm-svn: 351731
2019-01-21 09:52:34 +00:00
Chandler Carruth 57b08b0944 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 2946cd7010 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
Chandler Carruth 469bdefd44 Install new LLVM license structure and new developer policy.
This installs the new developer policy and moves all of the license
files across all LLVM projects in the monorepo to the new license
structure. The remaining projects will be moved independently.

Note that I've left odd formatting and other idiosyncracies of the
legacy license structure text alone to make the diff easier to read.
Critically, note that we do not in any case *remove* the old license
notice or terms, as that remains necessary until we finish the
relicensing process.

I've updated a few license files that refer to the LLVM license to
instead simply refer generically to whatever license the LLVM project is
under, basically trying to minimize confusion.

This is really the culmination of so many people. Chris led the
community discussions, drafted the policy update and organized the
multi-year string of meeting between lawyers across the community to
figure out the strategy. Numerous lawyers at companies in the community
spent their time figuring out initial answers, and then the Foundation's
lawyer Heather Meeker has done *so* much to help refine and get us ready
here. I could keep going on, but I just want to make sure everyone
realizes what a huge community effort this has been from the begining.

Differential Revision: https://reviews.llvm.org/D56897

llvm-svn: 351631
2019-01-19 06:14:24 +00:00
Mandeep Singh Grang 8108b7a60f [polly] Change to range-based invocation of llvm::sort
llvm-svn: 351502
2019-01-18 01:06:46 +00:00