Momchil Velikov [Mon, 12 Feb 2018 16:10:09 +0000 (16:10 +0000)]
Re-commit r324489: [DebugInfo] Improvements to representation of enumeration types (PR36168)
Differential Revision: https://reviews.llvm.org/D42734
llvm-svn: 324899
Simon Pilgrim [Mon, 12 Feb 2018 15:57:00 +0000 (15:57 +0000)]
[X86] Tag CET-IBT instruction scheduler classes
llvm-svn: 324898
Simon Pilgrim [Mon, 12 Feb 2018 15:52:59 +0000 (15:52 +0000)]
[X86][MMX] Add missing scheduling class tag for EMMS/FEMMS
We only tagged it with the itinerary class, so completeness checks were erroneously passed (PR35639).
AMD targets can perform these a lot quicker than WriteMicrocoded so will need an override in the models.
llvm-svn: 324897
Krasimir Georgiev [Mon, 12 Feb 2018 15:49:09 +0000 (15:49 +0000)]
[clang-format] Fix comment indentation in text protos
Summary: This patch fixes a bug where the comment indent of comments in text protos gets messed up because by default paren states get created with AlignColons = true (which makes snese for ObjC).
Subscribers: klimek, cfe-commits
Differential Revision: https://reviews.llvm.org/D43194
llvm-svn: 324896
Marshall Clow [Mon, 12 Feb 2018 15:41:25 +0000 (15:41 +0000)]
While implementing P0777 - preventing unnecessary decay, I found some non-public uses of decay that could be replaced by __uncvref. NFC intented
llvm-svn: 324895
Krzysztof Parzyszek [Mon, 12 Feb 2018 15:02:49 +0000 (15:02 +0000)]
[NFC] Fix comment of class InstrStage
Patch by Wei-Ren Chen.
Differential Revision: https://reviews.llvm.org/D42905
llvm-svn: 324894
Alexey Bataev [Mon, 12 Feb 2018 14:54:48 +0000 (14:54 +0000)]
[SLP] Take user instructions cost into consideration in insertelement vectorization.
Summary:
For better vectorization result we should take into consideration the
cost of the user insertelement instructions when we try to
vectorize sequences that build the whole vector. I.e. if we have the
following scalar code:
```
<Scalar code>
insertelement <ScalarCode>, ...
```
we should consider the cost of the last `insertelement ` instructions as
the cost of the scalar code.
Reviewers: RKSimon, spatel, hfinkel, mkuper
Subscribers: javed.absar, llvm-commits
Differential Revision: https://reviews.llvm.org/D42657
llvm-svn: 324893
Oliver Stannard [Mon, 12 Feb 2018 14:22:03 +0000 (14:22 +0000)]
[AArch64] Improve v8.1-A code-gen for atomic load-subtract
Armv8.1-A added an atomic load-add instruction, but not a load-subtract
instruction. Our current code-generation for atomic load-subtract always
inserts a NEG instruction to negate it's argument, even if it could be
folded into a constant or another instruction.
This adds lowering early in selection DAG to convert a load-subtract
operation into a subtract and a load-add, allowing the normal DAG
optimisations to work on it.
I've left the old tablegen patterns in because they are still needed for
global isel.
Some of the tests in this patch are copied from D35375 by Chad Rosier (which
was abandoned).
Differential revision: https://reviews.llvm.org/D42477
llvm-svn: 324892
Sanjay Patel [Mon, 12 Feb 2018 14:14:56 +0000 (14:14 +0000)]
[InstCombine] various clean-ups for commonIDivTransforms; NFC
llvm-svn: 324891
Aaron Ballman [Mon, 12 Feb 2018 13:38:25 +0000 (13:38 +0000)]
Allow the NS, CF, and ObjC attributes to be used with -fdouble-square-bracket-attributes. The syntactic locations for such attributes on ObjC constructs have been specifically chosen to follow the GNU attribute syntactic locations.
llvm-svn: 324890
Nicholas Wilson [Mon, 12 Feb 2018 13:17:09 +0000 (13:17 +0000)]
Test commit: reformat comment
llvm-svn: 324889
Ilya Biryukov [Mon, 12 Feb 2018 12:48:51 +0000 (12:48 +0000)]
[clangd] Log all ignored diagnostics.
Summary:
To aid debugging failures and crashes.
Only part of ignored diagnostics was logged before, now we log all of
them.
Reviewers: ioeric, hokein, sammccall
Reviewed By: hokein
Subscribers: klimek, jkorous-apple, cfe-commits
Differential Revision: https://reviews.llvm.org/D43123
llvm-svn: 324888
Hans Wennborg [Mon, 12 Feb 2018 12:43:39 +0000 (12:43 +0000)]
Revert r324835 "[X86] Reduce Store Forward Block issues in HW"
It asserts building Chromium; see PR36346.
(This also reverts the follow-up r324836.)
> If a load follows a store and reloads data that the store has written to memory, Intel microarchitectures can in many cases forward the data directly from the store to the load, This "store forwarding" saves cycles by enabling the load to directly obtain the data instead of accessing the data from cache or memory.
> A "store forward block" occurs in cases that a store cannot be forwarded to the load. The most typical case of store forward block on Intel Core microarchiticutre that a small store cannot be forwarded to a large load.
> The estimated penalty for a store forward block is ~13 cycles.
>
> This pass tries to recognize and handle cases where "store forward block" is created by the compiler when lowering memcpy calls to a sequence
> of a load and a store.
>
> The pass currently only handles cases where memcpy is lowered to XMM/YMM registers, it tries to break the memcpy into smaller copies.
> breaking the memcpy should be possible since there is no atomicity guarantee for loads and stores to XMM/YMM.
llvm-svn: 324887
Haojian Wu [Mon, 12 Feb 2018 12:26:12 +0000 (12:26 +0000)]
[clang-move] Fix the incorrect expansion end location.
Summary:
Before the fix, if clang-move decides to move the following macro statement, it only moves the first line `DEFINE(A,`.
```
DEFINE(A,
B);
```
Reviewers: ioeric
Reviewed By: ioeric
Subscribers: klimek, cfe-commits
Differential Revision: https://reviews.llvm.org/D43174
llvm-svn: 324886
Simon Atanasyan [Mon, 12 Feb 2018 12:21:55 +0000 (12:21 +0000)]
[mips] Fix 'l' constraint handling for types smaller than 32 bits
In case of correct using of the 'l' constraint llvm now generates valid
code; otherwise it shows an error message. Initially these triggers an
assertion.
This commit is the same as r324869 with fixed the test's file name.
llvm-svn: 324885
Filipe Cabecinhas [Mon, 12 Feb 2018 11:49:02 +0000 (11:49 +0000)]
ASan+operator new[]: Add an option for more thorough operator new[] cookie poisoning
Summary:
Right now clang is skipping array cookie poisoning for any operator
new[] which is not part of the set of replaceable global allocation
functions.
This commit adds a flag to tell clang to poison all operator new[]
cookies.
A previous review was poisoning all array cookies unconditionally, but
there is an edge case which would stop working under ASan (a custom
operator new[] saves whatever pointer it returned, and then accesses
it).
This newer revision adds a command line argument to toggle this feature.
Original revision: https://reviews.llvm.org/D41301
Compiler-rt test revision with an explanation of the edge case: https://reviews.llvm.org/D41664
Reviewers: rjmccall, kcc, rsmith
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D43013
llvm-svn: 324884
Ilya Biryukov [Mon, 12 Feb 2018 11:37:28 +0000 (11:37 +0000)]
[clangd] Remove codeComplete that returns std::future<>
Summary:
It was deprecated and callback version and is used everywhere.
Only changes to the testing code were needed.
Reviewers: hokein, ioeric, sammccall
Reviewed By: sammccall
Subscribers: mgorny, klimek, jkorous-apple, cfe-commits
Differential Revision: https://reviews.llvm.org/D43068
llvm-svn: 324883
Simon Atanasyan [Mon, 12 Feb 2018 11:15:37 +0000 (11:15 +0000)]
[mips] Revert rL324869
This commit adds inlineasm-cnstrnt-bad-l.ll which is clashing
with inlineasm-cnstrnt-bad-L.ll on case insensitive file systems.
llvm-svn: 324882
Florian Hahn [Mon, 12 Feb 2018 11:10:58 +0000 (11:10 +0000)]
[LoopInterchange] Simplify splitInnerLoopHeader logic (NFC).
We can use SplitBlock for both cases, which makes the code slightly
simpler and updates both LoopInfo and the dominator tree.
llvm-svn: 324881
David Green [Mon, 12 Feb 2018 11:06:27 +0000 (11:06 +0000)]
[CodeGen] Add a -trap-unreachable option for debugging
Add a common -trap-unreachable option, similar to the target
specific hexagon equivalent, which has been replaced. This
turns unreachable instructions into traps, which is useful for
debugging.
Differential Revision: https://reviews.llvm.org/D42965
llvm-svn: 324880
Jonas Hahnfeld [Mon, 12 Feb 2018 11:01:56 +0000 (11:01 +0000)]
[libomptarget] Fix detection of CUDA stubs library
CUDA_LIBRARIES contains additional linker arguments since CMake 3.3
which breakes the current way of finding the stubs library.
llvm-svn: 324879
Jonas Hahnfeld [Mon, 12 Feb 2018 10:46:45 +0000 (10:46 +0000)]
[CUDA] Add option to generate relocatable device code
As a first step, pass '-c/--compile-only' to ptxas so that it
doesn't complain about references to external function. This
will successfully generate object files, but they won't work
at runtime because the registration routines need to adapted.
Differential Revision: https://reviews.llvm.org/D42921
llvm-svn: 324878
Jonas Hahnfeld [Mon, 12 Feb 2018 10:46:34 +0000 (10:46 +0000)]
[CUDA] Fix test cuda-external-tools.cu
This didn't verify the CHECK prefix before!
Differential Revision: https://reviews.llvm.org/D42920
llvm-svn: 324877
Sam McCall [Mon, 12 Feb 2018 10:20:09 +0000 (10:20 +0000)]
[gtest] Support raw_ostream printing functions more comprehensively.
Summary:
These are functions like operator<<(raw_ostream&, Foo).
Previously these were only supported for messages. In the assertion
EXPECT_EQ(A, B) << C;
the local modifications would explicitly try to use raw_ostream printing for C.
However A and B would look for a std::ostream printing function, and often fall
back to gtest's default "168 byte object <00 01 FE 42 ...>".
This patch pulls out the raw_ostream support into a new header under `custom/`.
I changed the mechanism: instead of a convertible stream, we wrap the printed
value in a proxy object to allow it to be sent to a std::ostream.
I think the new way is clearer.
I also changed the policy: we prefer raw_ostream printers over std::ostream
ones. This is because the fallback printers are defined using std::ostream,
while all the raw_ostream printers should be "good".
Reviewers: ilya-biryukov, chandlerc
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D43091
llvm-svn: 324876
Pavel Labath [Mon, 12 Feb 2018 09:46:06 +0000 (09:46 +0000)]
Skip TestTargetXMLArch on non-darwin OSs
This test uses XML packets, but libxml is an optional dependency of
lldb, and this test fails if it is not present.
I'm leaving this enabled on mac, as thats the only platform that's
likely to have libxml always available, but ideally we should have a way
to skip this based on build configuration. I'll see if I can whip
something like that up soon, but for the time being, this unblocks the
buildbots.
llvm-svn: 324870
Simon Atanasyan [Mon, 12 Feb 2018 07:51:21 +0000 (07:51 +0000)]
[mips] Fix 'l' constraint handling for types smaller than 32 bits
In case of correct using of the 'l' constraint llvm now generates valid
code; otherwise it shows an error message. Initially these triggers an
assertion.
llvm-svn: 324869
Gerolf Hoflehner [Mon, 12 Feb 2018 07:19:05 +0000 (07:19 +0000)]
[MC] Issue error message when data region is not terminated
llvm-svn: 324868
Max Kazantsev [Mon, 12 Feb 2018 05:16:28 +0000 (05:16 +0000)]
[NFC] Fix typos
llvm-svn: 324867
Max Kazantsev [Mon, 12 Feb 2018 05:09:38 +0000 (05:09 +0000)]
[SCEV] Make getPostIncExpr guaranteed to return AddRec
The current implementation of `getPostIncExpr` invokes `getAddExpr` for two recurrencies
and expects that it always returns it a recurrency. But this is not guaranteed to happen if we
have reached max recursion depth or refused to make SCEV simplification for other reasons.
This patch changes its implementation so that now it always returns SCEVAddRec without
relying on `getAddExpr`.
Differential Revision: https://reviews.llvm.org/D42953
llvm-svn: 324866
Craig Topper [Mon, 12 Feb 2018 03:02:02 +0000 (03:02 +0000)]
[X86] Don't look for TEST instruction shrinking opportunities when the root node is a X86ISD::SUB.
I don't believe we ever create an X86ISD::SUB with a 0 constant which is what the TEST handling needs. The ternary operator at the end of this code shows up as only going one way in the llvm-cov report from the bots.
llvm-svn: 324865
Craig Topper [Mon, 12 Feb 2018 03:02:01 +0000 (03:02 +0000)]
[X86] Remove check for X86ISD::AND with no flag users from the TEST instruction immediate shrinking code.
We turn X86ISD::AND with no flag users back to ISD::AND in PreprocessISelDAG.
llvm-svn: 324864
Craig Topper [Mon, 12 Feb 2018 02:48:42 +0000 (02:48 +0000)]
[X86] Change some compare patterns to use loadi8/loadi16/loadi32/loadi64 helper fragments.
This enables CMP8mi to fold zextloadi8i1 which in all tests allows us to avoid creating a TEST8rr that peephole can't fold.
llvm-svn: 324863
Craig Topper [Mon, 12 Feb 2018 02:03:36 +0000 (02:03 +0000)]
[X86] Autogenerate complete checks. NFC
llvm-svn: 324862
Craig Topper [Mon, 12 Feb 2018 01:33:38 +0000 (01:33 +0000)]
[X86] Add KADD X86ISD opcode instead of reusing ISD::ADD.
ISD::ADD implies individual vector element addition with no carries between elements. But for a vXi1 type that would be the same as XOR. And we already turn ISD::ADD into ISD::XOR for all vXi1 types during lowering. So the ISD::ADD pattern would never be able to match anyway.
KADD is different, it adds the elements but also propagates a carry between them. This just a way of doing an add in k-register without bitcasting to the scalar domain. There's still no way to match the pattern, but at least its not obviously wrong.
llvm-svn: 324861
Craig Topper [Mon, 12 Feb 2018 01:33:36 +0000 (01:33 +0000)]
[X86] Allow zextload/extload i1->i8 to be folded into instructions during isel
Previously we just emitted this as a MOV8rm which would likely get folded during the peephole pass anyway. This just makes it explicit earlier.
The gpr-to-mask.ll test changed because the kaddb instruction has no memory form.
llvm-svn: 324860
Charles Saternos [Mon, 12 Feb 2018 00:20:16 +0000 (00:20 +0000)]
Follow on to rL324854 (Added tests)
llvm-svn: 324859
Craig Topper [Sun, 11 Feb 2018 22:32:30 +0000 (22:32 +0000)]
[X86] Remove MASK_BINOP intrinsic type. NFC
llvm-svn: 324858
Craig Topper [Sun, 11 Feb 2018 22:32:29 +0000 (22:32 +0000)]
[X86] Remove dead code from getMaskNode that looked for a i64 mask with a maskVT that wasn't v64i1. NFC
llvm-svn: 324857
Craig Topper [Sun, 11 Feb 2018 22:32:27 +0000 (22:32 +0000)]
[X86] Remove LowerBoolVSETCC_AVX512, we get this with a target independent DAG combine now. NFC
llvm-svn: 324856
Dimitry Andric [Sun, 11 Feb 2018 22:31:05 +0000 (22:31 +0000)]
Add default C++ ABI libname and include paths for FreeBSD
Summary:
As noted in a discussion about testing the LLVM 6.0.0 release candidates
(with libc++) for FreeBSD, many tests turned out to fail with
"exception_ptr not yet implemented". This was because libc++ did not
choose the correct C++ ABI library, and therefore it fell back to the
`exception_fallback.ipp` header.
Since FreeBSD 10.x, we have been using libcxxrt as our C++ ABI library,
and its headers have always been installed in /usr/include/c++/v1,
together with the (system) libc++ headers. (Older versions of FreeBSD
used GNU libsupc++ by default, but these are now unsupported.)
Therefore, if we are building libc++ for FreeBSD, set:
* `LIBCXX_CXX_ABI_LIBNAME` to "libcxxrt"
* `LIBCXX_CXX_ABI_INCLUDE_PATHS` to "/usr/include/c++/v1"
by default.
Reviewers: emaste, EricWF, mclow.lists
Reviewed By: EricWF
Subscribers: mgorny, cfe-commits, krytarowski
Differential Revision: https://reviews.llvm.org/D43166
llvm-svn: 324855
Charles Saternos [Sun, 11 Feb 2018 22:06:20 +0000 (22:06 +0000)]
[ThinLTO] Add GraphTraits for FunctionSummaries
Add GraphTraits definitions to the FunctionSummary and ModuleSummaryIndex classes. These GraphTraits will be used to construct find SCC's in ThinLTO analysis passes.
llvm-svn: 324854
Eric Fiselier [Sun, 11 Feb 2018 22:00:19 +0000 (22:00 +0000)]
Fix libcxx MSVC C++17 redefinition of 'align_val_t'
Patch from charlieio@outlook.com
Reviewed as https://reviews.llvm.org/D42354
When the following command is used:
> clang-cl -std:c++17 -Iinclude\c++\v1 hello.cc c++.lib
An error occurred:
In file included from hello.cc:1:
In file included from include\c++\v1\iostream:38:
In file included from include\c++\v1\ios:216:
In file included from include\c++\v1\__locale:15:
In file included from include\c++\v1\string:477:
In file included from include\c++\v1\string_view:176:
In file included from include\c++\v1\__string:56:
In file included from include\c++\v1\algorithm:643:
In file included from include\c++\v1\memory:656:
include\c++\v1\new(165,29): error: redefinition of 'align_val_t'
enum class _LIBCPP_ENUM_VIS align_val_t : size_t { };
^
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.12.25827\include\vcruntime_new.h(43,16): note:
previous definition is here
enum class align_val_t : size_t {};
^
1 error generated.
vcruntime_new.h has defined align_val_t, libcxx need hide align_val_t.
This patch fixes that error.
llvm-svn: 324853
Eric Fiselier [Sun, 11 Feb 2018 21:57:25 +0000 (21:57 +0000)]
Mark two issues as complete
llvm-svn: 324852
Marshall Clow [Sun, 11 Feb 2018 21:51:49 +0000 (21:51 +0000)]
Fix a typo in the synopsis comment. NFC. Thanks to K-ballo for the catch
llvm-svn: 324851
Brock Wyma [Sun, 11 Feb 2018 21:26:46 +0000 (21:26 +0000)]
[CodeView] Allow variable names to be as long as the codeview format supports
Instead of reserving 0xF00 bytes for the fixed length portion of the CodeView
symbol name, calculate the actual length of the fixed length portion.
Differential Revision: https://reviews.llvm.org/D42125
llvm-svn: 324850
Kuba Mracek [Sun, 11 Feb 2018 20:44:04 +0000 (20:44 +0000)]
Revert r324847, there's bot failures.
llvm-svn: 324849
Kuba Mracek [Sun, 11 Feb 2018 19:25:34 +0000 (19:25 +0000)]
[sanitizer] Implement NanoTime() on Darwin
Currently NanoTime() on Darwin is unimplemented and always returns 0. Looks like there's quite a few things broken because of that (TSan periodic memory flush, ASan allocator releasing pages back to the OS). Let's fix that.
Differential Revision: https://reviews.llvm.org/D40665
llvm-svn: 324847
Kuba Mracek [Sun, 11 Feb 2018 19:23:42 +0000 (19:23 +0000)]
[compiler-rt] Replace forkpty with posix_spawn
On Darwin, we currently use forkpty to communicate with the "atos" symbolizer. There are several problems that fork or forkpty has, e.g. that after fork, interceptors are still active and this sometimes causes crashes or hangs. This is especially problematic for TSan, which uses interceptors for OS-provided locks and mutexes, and even Libc functions use those.
This patch replaces forkpty with posix_spawn. Since posix_spawn doesn't fork (at least on Darwin), the interceptors are not a problem. Additionally, this also fixes a latent threading problem with ptsname (it's unsafe to use this function in multithreaded programs). Yet another benefit is that we'll handle post-fork failures (e.g. sandbox disallows "exec") gracefully now.
Differential Revision: https://reviews.llvm.org/D40032
llvm-svn: 324846
Craig Topper [Sun, 11 Feb 2018 18:52:16 +0000 (18:52 +0000)]
[X86] Update some required-vector-width.ll test cases to not pass 512-bit vectors in arguments or return.
ABI for these would require 512 bits support so we don't want to test that.
llvm-svn: 324845
Simon Pilgrim [Sun, 11 Feb 2018 17:29:42 +0000 (17:29 +0000)]
[X86][SSE] Use SplitBinaryOpsAndApply to recognise PSUBUS patterns before they're split on AVX1
This needs to be generalised further to support AVX512BW cases but I want to add non-uniform constants first.
llvm-svn: 324844
Sanjay Patel [Sun, 11 Feb 2018 17:20:32 +0000 (17:20 +0000)]
[InstCombine] X / (X * Y) -> 1 / Y if the multiplication does not overflow
The related cases for (X * Y) / X were handled in rL124487.
https://rise4fun.com/Alive/6k9
The division in these tests is subsequently eliminated by existing instcombines
for 1/X.
llvm-svn: 324843
Craig Topper [Sun, 11 Feb 2018 17:11:40 +0000 (17:11 +0000)]
[X86] Use min/max for vector ult/ugt compares if avoids a sign flip.
Summary:
Currently we only use min/max to help with ule/uge compares because it removes an invert of the result that would otherwise be needed. But we can also use it for ult/ugt compares if it will prevent the need for a sign bit flip needed to use pcmpgt at the cost of requiring an invert after the compare.
I also refactored the code so that the max/min code is self contained and does its own return instead of setting up a flag to manipulate the rest of the function's behavior.
Most of the test cases look ok with this. I did notice that we added instructions when one of the operands being sign flipped is a constant vector that we were able to constant fold the flip into.
I also noticed that sometimes the SSE min/max clobbers a register that is needed after the compare. This resulted in an extra move being inserted before the min/max to preserve the register. We could try to detect this and switch from min to max and change the compare operands to use the operand that gets reused in the compare.
Reviewers: spatel, RKSimon
Reviewed By: RKSimon
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D42935
llvm-svn: 324842
Simon Pilgrim [Sun, 11 Feb 2018 17:01:43 +0000 (17:01 +0000)]
[X86][SSE] Moved SplitBinaryOpsAndApply earlier so more methods can use it. NFCI.
llvm-svn: 324841
Sanjay Patel [Sun, 11 Feb 2018 16:52:44 +0000 (16:52 +0000)]
[InstCombine] add tests for div-mul folds; NFC
The related cases for (X * Y) / X were handled in rL124487.
llvm-svn: 324840
Sanjay Patel [Sun, 11 Feb 2018 14:38:23 +0000 (14:38 +0000)]
[TargetLowering] try to create -1 constant operand for math ops via demanded bits
This reverses instcombine's demanded bits' transform which always tries to clear bits in constants.
As noted in PR35792 and shown in the test diffs:
https://bugs.llvm.org/show_bug.cgi?id=35792
...we can do better in codegen by trying to form -1. The x86 sub test shows a missed opportunity.
I did investigate changing instcombine's behavior, but it would be more work to change
canonicalization in IR. Clearing bits / shrinking constants can allow killing instructions,
so we'd have to figure out how to not regress those cases.
Differential Revision: https://reviews.llvm.org/D42986
llvm-svn: 324839
Simon Pilgrim [Sun, 11 Feb 2018 13:12:50 +0000 (13:12 +0000)]
[X86] Add PR33747 test case
llvm-svn: 324838
Simon Pilgrim [Sun, 11 Feb 2018 10:52:37 +0000 (10:52 +0000)]
[X86][SSE] Enable SMIN/SMAX/UMIN/UMAX custom lowering for all legal types
This allows us to recognise more saturation patterns and also simplify some MINMAX codegen that was failing to combine CMPGE comparisons to a legal CMPGT.
Differential Revision: https://reviews.llvm.org/D43014
llvm-svn: 324837
Lama Saba [Sun, 11 Feb 2018 10:33:06 +0000 (10:33 +0000)]
fix test/CodeGen/X86/fixup-sfb.ll test failure after commit https://reviews.llvm.org/rL324835
Change-Id: I2526c2f342654e85ce054237de03ae9db9ab4994
llvm-svn: 324836
Lama Saba [Sun, 11 Feb 2018 09:34:12 +0000 (09:34 +0000)]
[X86] Reduce Store Forward Block issues in HW
If a load follows a store and reloads data that the store has written to memory, Intel microarchitectures can in many cases forward the data directly from the store to the load, This "store forwarding" saves cycles by enabling the load to directly obtain the data instead of accessing the data from cache or memory.
A "store forward block" occurs in cases that a store cannot be forwarded to the load. The most typical case of store forward block on Intel Core microarchiticutre that a small store cannot be forwarded to a large load.
The estimated penalty for a store forward block is ~13 cycles.
This pass tries to recognize and handle cases where "store forward block" is created by the compiler when lowering memcpy calls to a sequence
of a load and a store.
The pass currently only handles cases where memcpy is lowered to XMM/YMM registers, it tries to break the memcpy into smaller copies.
breaking the memcpy should be possible since there is no atomicity guarantee for loads and stores to XMM/YMM.
Change-Id: I620b6dc91583ad9a1444591e3ddc00dd25d81748
llvm-svn: 324835
Craig Topper [Sun, 11 Feb 2018 08:06:27 +0000 (08:06 +0000)]
[X86] Don't make 512-bit vectors legal when preferred vector width is 256 bits and 512 bits aren't required
This patch adds a new function attribute "required-vector-width" that can be set by the frontend to indicate the maximum vector width present in the original source code. The idea is that this would be set based on ABI requirements, intrinsics or explicit vector types being used, maybe simd pragmas, etc. The backend will then use this information to determine if its save to make 512-bit vectors illegal when the preference is for 256-bit vectors.
For code that has no vectors in it originally and only get vectors through the loop and slp vectorizers this allows us to generate code largely similar to our AVX2 only output while still enabling AVX512 features like mask registers and gather/scatter. The loop vectorizer doesn't always obey TTI and will create oversized vectors with the expectation the backend will legalize it. In order to avoid changing the vectorizer and potentially harm our AVX2 codegen this patch tries to make the legalizer behavior similar.
This is restricted to CPUs that support AVX512F and AVX512VL so that we have good fallback options to use 128 and 256-bit vectors and still get masking.
I've qualified every place I could find in X86ISelLowering.cpp and added tests cases for many of them with 2 different values for the attribute to see the codegen differences.
We still need to do frontend work for the attribute and teach the inliner how to merge it, etc. But this gets the codegen layer ready for it.
Differential Revision: https://reviews.llvm.org/D42724
llvm-svn: 324834
Craig Topper [Sun, 11 Feb 2018 07:44:33 +0000 (07:44 +0000)]
[X86] Remove setOperationAction lines for promoting vXi1 SINT_TO_FP/UINT_TO_FP.
We promote these via a DAG combine now before lowering gets the chance.
Also remove the v2i1 custom handling since it will no longer be triggered.
llvm-svn: 324833
Craig Topper [Sun, 11 Feb 2018 04:58:58 +0000 (04:58 +0000)]
[SelectionDAG] Remove TargetLowering::getConstTrueVal. Use SelectionDAG::getBoolConstant in the one place it was used.
SelectionDAG::getBoolConstant was recently introduced. At the time I didn't know getConstTrueVal existed, but I think getBoolConstant is better as it will use the source VT to make sure it can properly detect floating point if it is configured differently.
llvm-svn: 324832
Craig Topper [Sun, 11 Feb 2018 03:07:19 +0000 (03:07 +0000)]
[X86] Remove some redundant qualifications from the setOperationAction blocks. NFC
These were added as part of the refactoring for prefer vector width. At the time I thought the hasAVX512 here would be replaced with "allow 512 bit vectors" so that it would read "allow 512 bit vectors OR VLX". But now the plan is to only give the option of disabling 512 bit vectors when VLX is enabled. So we don't need this qualification at all
llvm-svn: 324831
Galina Kistanova [Sun, 11 Feb 2018 02:32:21 +0000 (02:32 +0000)]
Fixed extra ‘;’ warning
llvm-svn: 324830
Simon Pilgrim [Sat, 10 Feb 2018 23:38:50 +0000 (23:38 +0000)]
[X86][SSE] Add SMIN/SMAX combine test
As discussed on D43014, we need the ability to flip SMIN/SMAX to (legal) UMIN/UMAX
llvm-svn: 324829
Craig Topper [Sat, 10 Feb 2018 23:34:27 +0000 (23:34 +0000)]
[X86] Change the signature of the AVX512 packed fp compare intrinsics to return vXi1 mask. Make bitcasts to scalar explicit in IR
Summary: This is the clang equivalent of r324827
Reviewers: zvi, delena, RKSimon, spatel
Reviewed By: RKSimon
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D43143
llvm-svn: 324828
Craig Topper [Sat, 10 Feb 2018 23:33:55 +0000 (23:33 +0000)]
[X86] Change signatures of avx512 packed fp compare intrinsics to return a vXi1 mask type to be closer to an fcmp.
Summary:
This patch changes the signature of the avx512 packed fp compare intrinsics to return a vXi1 vector and no longer take a mask as input. The casts to scalar type will now need to be explicit in the IR. The masking node will now be an explicit and in the IR.
This makes the intrinsic look much more similar to an fcmp instruction that we wish we could use for these but can't. We already use icmp instructions for integer compares.
Previously the lowering step of isel would turn the intrinsic into an X86 specific ISD node and a emit the masking nodes as well as some bitcasts. This means DAG combines can't see the vXi1 type until somewhat late, making it more difficult to combine out gpr<->mask transition sequences. By exposing the vXi1 type explicitly in the IR and initial SelectionDAG we give earlier DAG combines and even InstCombine the chance to see it and optimize it.
This should make any issues with gpr<->mask sequences the same between integer and fp. Meaning we only have to fix them once.
Reviewers: spatel, delena, RKSimon, zvi
Reviewed By: RKSimon
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D43137
llvm-svn: 324827
Simon Pilgrim [Sat, 10 Feb 2018 22:27:35 +0000 (22:27 +0000)]
[X86][SSE] Add UMIN/UMAX combine test
As discussed on D43014, we need the ability to flip UMIN/UMAX to (legal) SMIN/SMAX
llvm-svn: 324826
Simon Pilgrim [Sat, 10 Feb 2018 21:46:09 +0000 (21:46 +0000)]
[InstCombine] Add constant vector support for ~(C >> Y) --> ~C >> Y
Includes adding m_NonNegative constant pattern matcher
llvm-svn: 324825
Aaron Smith [Sat, 10 Feb 2018 21:28:55 +0000 (21:28 +0000)]
Fix test clang-diff-json.cpp
Summary:
This test would fail if the python path had spaces. Add a quote around the path to fix this problem and update some test values changed by the addition of quotes around the path.
Tested on Windows and Linux with Python 3.x
Reviewers: zturner, llvm-commits
Subscribers: klimek, cfe-commits
Differential Revision: https://reviews.llvm.org/D43164
llvm-svn: 324824
Simon Pilgrim [Sat, 10 Feb 2018 19:27:10 +0000 (19:27 +0000)]
[X86][SSE] Increase PMULLD costs to better match hardware
Until Skylake, most hardware could only issue a PMULLD op every other cycle
llvm-svn: 324823
Craig Topper [Sat, 10 Feb 2018 19:12:58 +0000 (19:12 +0000)]
[X86] Custom legalize (v2i32 (setcc (v2f32))) so that we don't end up with a (v4i1 (setcc (v4f32)))
Undef VLX, getSetCCResultType returns v2i1/v4i1 for v2f32/v4f32 so default type legalization will end up changing the setcc result type back to vXi1 if it had been extended. The resulting extend gets messed up further by type legalization and is difficult to recombine back to (v4i32 (setcc (v4f32))) after legalization.
I went ahead and enabled this for SSE2 and later since its always the result we want and this helps type legalization get there in less steps.
llvm-svn: 324822
Alexander Richardson [Sat, 10 Feb 2018 18:14:34 +0000 (18:14 +0000)]
Use RelType instead of uint32_t in DynamicReloc. NFC
llvm-svn: 324821
Craig Topper [Sat, 10 Feb 2018 17:58:58 +0000 (17:58 +0000)]
[X86] Extend inputs with elements smaller than i32 to sint_to_fp/uint_to_fp before type legalization.
This prevents extends of masks being introduced during lowering where it become difficult to combine them out.
There are a few oddities in here.
We sometimes concatenate two k-registers produced by two compares, sign_extend the combined pair, then extract two halves. This worked better previously because the sign_extend wasn't created until after the fp_to_sint was split which led to a split sign_extend being created.
We probably also need to custom type legalize (v2i32 (sext v2i1)) via widening.
llvm-svn: 324820
Craig Topper [Sat, 10 Feb 2018 17:58:56 +0000 (17:58 +0000)]
[X86] Remove some check-prefixes from avx512-cvt.ll to prepare for an upcoming patch.
The update script sometimes has trouble when there are check-prefixes representing every possible combination of feature flags. I have a patch where the update script was generating something that didn't pass lit.
This patch just removes some check-prefixes and expands out some of the checks to workaround this.
llvm-svn: 324819
Simon Pilgrim [Sat, 10 Feb 2018 17:55:23 +0000 (17:55 +0000)]
Add vector add/sub/mul/div by scalar tests (PR27085)
Ensure the scalar is correctly splatted to all lanes
llvm-svn: 324818
Sanjay Patel [Sat, 10 Feb 2018 15:36:23 +0000 (15:36 +0000)]
[x86] preserve test intent by removing undef
D43141 proposes to correct undef folding in the DAG,
and this test would not survive that change.
llvm-svn: 324817
Sanjay Patel [Sat, 10 Feb 2018 15:28:08 +0000 (15:28 +0000)]
[x86] preserve test intent by removing undef
D43141 proposes to correct undef folding in the DAG,
and this test would not survive that change.
llvm-svn: 324816
Simon Pilgrim [Sat, 10 Feb 2018 15:14:00 +0000 (15:14 +0000)]
Fix Wdocumentation warning. NFCI.
llvm-svn: 324815
Sanjay Patel [Sat, 10 Feb 2018 15:14:00 +0000 (15:14 +0000)]
[ARM] preserve test intent by removing undef
D43141 proposes to correct undef folding in the DAG,
and this test would not survive that change.
llvm-svn: 324814
Simon Pilgrim [Sat, 10 Feb 2018 15:02:07 +0000 (15:02 +0000)]
Fix Wdocumentation warnings. NFCI.
llvm-svn: 324813
Simon Pilgrim [Sat, 10 Feb 2018 14:45:58 +0000 (14:45 +0000)]
[X86][SSE] Regenerate old sitofp v2i32 test
llvm-svn: 324812
Kamil Rytarowski [Sat, 10 Feb 2018 14:44:12 +0000 (14:44 +0000)]
Correct a typo in tsan_pthread_setname_np in the FreeBSD code
Noted by David CARLIER.
llvm-svn: 324811
Kamil Rytarowski [Sat, 10 Feb 2018 14:36:55 +0000 (14:36 +0000)]
Mark the textdomain.cc test as unsupported on BSDs
textdomain is a part of -lintl on BSDs. In GLIBC it's in libc.
We assume that -lintl will need to be rebuilt with sanitizers
in order to sanitize programs using its features.
This is a proper continuation of D41013.
The original patch has been reverted (adding -lintl).
llvm-svn: 324810
Gabor Horvath [Sat, 10 Feb 2018 14:26:53 +0000 (14:26 +0000)]
Make a build bot happy.
llvm-svn: 324809
Gabor Horvath [Sat, 10 Feb 2018 14:04:45 +0000 (14:04 +0000)]
[Templight] Template Instantiation Observer
This patch adds a base-class called TemplateInstantiationObserver which gets
notified whenever a template instantiation is entered or exited during
semantic analysis. This is a base class used to implement the template
profiling and debugging tool called
Templight (https://github.com/mikael-s-persson/templight).
The patch also makes a few more changes:
* ActiveTemplateInstantiation class is moved out of the Sema class (so it can be used with inclusion of Sema.h).
* CreateFrontendAction function in front-end utilities is given external linkage (not longer a hidden static function).
* TemplateInstObserverChain data member added to Sema class to hold the list of template-inst observers.
* Notifications to the template-inst observer are added at the key places where templates are instantiated.
Patch by: Abel Sinkovics!
Differential Revision: https://reviews.llvm.org/D5767
llvm-svn: 324808
Dean Michael Berris [Sat, 10 Feb 2018 09:07:34 +0000 (09:07 +0000)]
[XRay] Rename Buffer.Buffer to Buffer.Data
Summary: some compiler (msvc) treats Buffer.Buffer as constructor and refuse to compile. NFC
Authored by comicfans44.
Reviewers: rnk, dberris
Reviewed By: dberris
Subscribers: llvm-commits
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D40346
llvm-svn: 324807
Craig Topper [Sat, 10 Feb 2018 08:39:31 +0000 (08:39 +0000)]
[X86] Custom legalize (v2i1 (fp_to_uint/fp_to_sint v2f64)) without AVX512VL.
Strangely the code was already present, just the setOperationAction wasn't being called without VLX.
llvm-svn: 324806
Craig Topper [Sat, 10 Feb 2018 08:06:52 +0000 (08:06 +0000)]
[X86] Legalize zero extends from vXi1 to vXi16/vXi32/vXi64 using a sign extend and a shift.
This avoids a constant pool load to create 1.
The int->float are showing converts to mask and back. We probably need to widen inputs to sint_to_fp/uint_to_fp before type legalization.
llvm-svn: 324805
Craig Topper [Sat, 10 Feb 2018 08:06:49 +0000 (08:06 +0000)]
[X86] Teach combineExtSetcc to handle ZERO_EXTEND by widening the setcc and then masking. A later DAG combine will convert to a shift.
This helps to avoid a constant pool load needed to zero extend from the mask.
llvm-svn: 324804
Fangrui Song [Sat, 10 Feb 2018 05:01:33 +0000 (05:01 +0000)]
[utils] Refactor utils/update_{,llc_}test_checks.py to share more code
Summary:
This revision refactors 1. parser 2. CHECK line adder of utils/update_{,llc_}test_checks.py
so that thir functionality can be re-used by other utility scripts (e.g. D42712)
Reviewers: asb, craig.topper, RKSimon, echristo
Subscribers: llvm-commits, spatel
Differential Revision: https://reviews.llvm.org/D42805
llvm-svn: 324803
Artem Dergachev [Sat, 10 Feb 2018 03:14:22 +0000 (03:14 +0000)]
[analyzer] NFC: Assert that our fix for noreturn destructors keeps working.
Massive false positives were known to be caused by continuing the analysis
after a destructor with a noreturn attribute has been executed in the program
but not modeled in the analyzer due to being missing in the CFG.
Now that work is being done on enabling the modeling of temporary constructors
and destructors in the CFG, we need to make sure that the heuristic that
suppresses these false positives keeps working when such modeling is disabled.
In particular, different code paths open up when the corresponding constructor
is being inlined during analysis.
Differential Revision: https://reviews.llvm.org/D42779
llvm-svn: 324802
Artem Dergachev [Sat, 10 Feb 2018 03:04:59 +0000 (03:04 +0000)]
[analyzer] Fix a merge error in -analyzer-config tests.
It was introduced when two -analyzer-config options were added almost
simultaneously in r324793 and r324668 and the option count was not
rebased correctly in the tests.
Fixes the buildbots.
llvm-svn: 324801
Artem Dergachev [Sat, 10 Feb 2018 02:55:08 +0000 (02:55 +0000)]
[analyzer] NFC: Use CFG construction contexts instead of homemade lookahead.
The analyzer was relying on peeking the next CFG element during analysis
whenever it was trying to figure out what object is being constructed
by a given constructor. This information is now available in the current CFG
element in all cases that were previously supported by the analyzer,
so no complicated lookahead is necessary anymore.
No functional change intended - the context in the CFG should for now be
available if and only if it was previously discoverable via CFG lookahead.
Differential Revision: https://reviews.llvm.org/D42721
llvm-svn: 324800
Eric Fiselier [Sat, 10 Feb 2018 02:53:47 +0000 (02:53 +0000)]
Use multi-key tree search for {map, set}::{count, equal_range}
Patch from ngolovliov@gmail.com
Reviewed as: https://reviews.llvm.org/D42344
As described in llvm.org/PR30959, the current
implementation of std::{map, key}::{count, equal_range} in libcxx is
non-conforming. Quoting the C++14 standard [associative.reqmts]p3
> The phrase “equivalence of keys” means the equivalence relation imposed by
> the comparison and not the operator== on keys. That is, two keys k1 and k2 are
> considered to be equivalent if for the comparison object comp,
> comp(k1, k2) == false && comp(k2, k1) == false.
In the same section, the requirements table states the following:
> a.equal_range(k) equivalent to make_pair(a.lower_bound(k), a.upper_bound(k))
> a.count(k) returns the number of elements with key equivalent to k
The behaviour of libstdc++ seems to conform to the standard here.
llvm-svn: 324799
Artem Dergachev [Sat, 10 Feb 2018 02:46:14 +0000 (02:46 +0000)]
[CFG] Provide construction contexts when constructors have cleanups.
Now that we make it possible to query the CFG constructor element to find
information about the construction site, possible cleanup work represented by
ExprWithCleanups should not prevent us from providing this information.
This allows us to have a correct construction context for variables initialized
"by value" via elidable copy-constructors, such as 'i' in
iterator i = vector.begin();
Differential Revision: https://reviews.llvm.org/D42719
llvm-svn: 324798
Nirav Dave [Sat, 10 Feb 2018 02:41:22 +0000 (02:41 +0000)]
[DAG] Make early exit hasPredecessorHelper return true. NFCI.
All uses conservatively assume in early exit case that it will be a
predecessor. Changing default removes checking code in all uses.
llvm-svn: 324797
Artem Dergachev [Sat, 10 Feb 2018 02:18:04 +0000 (02:18 +0000)]
[CFG] Add construction context for constructor initializers.
CFG elements for constructors of fields and base classes that are being
initialized before the body of the whole-class constructor starts can now be
queried to discover that they're indeed participating in initialization of their
respective fields or bases before the whole-class constructor kicks in.
CFG construction contexts are now capable of representing CXXCtorInitializer
triggers, which aren't considered to be statements in the Clang AST.
Differential Revision: https://reviews.llvm.org/D42700
llvm-svn: 324796
Jason Molenda [Sat, 10 Feb 2018 01:57:33 +0000 (01:57 +0000)]
Looks like this fails when built i386 on linux bots, possible target
arch incompat with spec in file so it's rejected and the test fails.
will look into this later, will be a test case issue not a test issue;
test case may only be valid when lldb is built for/running on an x86_64
system.
llvm-svn: 324795
Artem Dergachev [Sat, 10 Feb 2018 01:55:23 +0000 (01:55 +0000)]
[CFG] Add construction context for simple variable declarations.
Constructors of simple variables now can be queried to discover that they're
constructing into simple variables.
Differential Revision: https://reviews.llvm.org/D42699
llvm-svn: 324794