Matt Arsenault [Tue, 7 Jan 2020 03:31:33 +0000 (22:31 -0500)]
AMDGPU/GlobalISel: Fix unused variable warning in release
Nicolas Vasilache [Tue, 7 Jan 2020 03:14:14 +0000 (22:14 -0500)]
[mlir][Linalg] Add a linalg.reshape op
Summary:
This diff adds a new operation to linalg to allow reshaping of an
existing view into a new view in the same buffer at the same offset.
More specifically:
The `linalg.reshape` op produces a new view whose sizes are a reassociation
of the original `view`. Depending on whether or not the reassociated
MemRefType is contiguous, the resulting memref may require explicit alloc
and copies.
A reassociation is defined as a continous grouping of dimensions and is
represented with a affine map array attribute. In the future, non-continous
groupings may be allowed (i.e. permutations, reindexings etc).
For now, it is assumed that either:
1. a reassociation produces and consumes contiguous MemRefType or,
2. the reshape op will be folded into its consumers (by changing the shape
of the computations).
All other cases are undefined behavior and a reshape op may not lower to
LLVM if it cannot be proven statically that it does not require alloc+copy.
A reshape may either collapse or expand dimensions, depending on the
relationship between source and target memref ranks. The verification rule
is that the reassociation maps are applied to the memref with the larger
rank to obtain the memref with the smaller rank. In the case of a dimension
expansion, the reassociation maps can be interpreted as inverse maps.
Examples:
```mlir
// Dimension collapse (i, j) -> i' and k -> k'
%1 = linalg.reshape %0 [(i, j, k) -> (i, j),
(i, j, k) -> (k)] :
memref<?x?x?xf32, stride_spec> into memref<?x?xf32, stride_spec_2>
```
```mlir
// Dimension expansion i -> (i', j') and (k) -> (k')
%1 = linalg.reshape %0 [(i, j, k) -> (i, j),
(i, j, k) -> (k)] :
memref<?x?xf32, stride_spec> into memref<?x?x?xf32, stride_spec_2>
```
The relevant invalid and roundtripping tests are added.
Reviewers: AlexEichenberger, ftynse, rriddle, asaadaldien, yangjunpro
Subscribers: kiszk, merge_guards_bot, mehdi_amini, jpienaar, burmako, shauheen, antiagainst, arpith-jacob, mgester, lucyrfox, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D72168
QingShan Zhang [Tue, 7 Jan 2020 03:13:39 +0000 (03:13 +0000)]
[NFC][Test] Add a test to verify the DAGCombine of fma
Matt Arsenault [Tue, 7 Jan 2020 02:01:16 +0000 (21:01 -0500)]
AMDGPU: Add run line to int_to_fp tests
This wasn't catching a regression on targets with legal i16 triggered
in a future commit.
Matt Arsenault [Mon, 21 Oct 2019 20:39:17 +0000 (13:39 -0700)]
AMDGPU: Select llvm.amdgcn.interp.p2.f16 directly
This will enable automatic GlobalISel support in a future commit.
Richard Smith [Tue, 7 Jan 2020 01:16:29 +0000 (17:16 -0800)]
Always deduce the lengths of contained parameter packs when deducing a
pack expansion.
Previously, if all parameter / argument pairs for a pack expansion
deduction were non-deduced contexts, we would not deduce the arity of
the pack, and could end up deducing a different arity (leading to
failures during substitution) or defaulting to an arity of 0 (leading to
bad diagnostics about passing the wrong number of arguments to a
variadic function). Instead, we now always deduce the arity for all
involved packs any time we deduce a pack expansion.
This will result in less substitution happening in some cases, which
could avoid non-SFINAEable errors, and should generally improve the
quality of diagnostics when passing initializer lists to variadic
functions.
Matt Arsenault [Sat, 7 Sep 2019 22:42:27 +0000 (18:42 -0400)]
AMDGPU: Use default operands for clamp/omod
We have a lot of complex pattern variants that just set the source
modifiers that are really handled, and then set the output modifiers
to 0. We're unlikely to ever match output modifiers from the use
instruction side, and we already match clamp/omod in a separate pass.
Heejin Ahn [Tue, 7 Jan 2020 00:15:53 +0000 (16:15 -0800)]
[WebAssembly] Fix landingpad-only case in Emscripten EH
Summary:
Previously we didn't set `Changed` to true when there are only landing
pads but not invokes. This fixes it and we set `Changed` to true
whenever we have landing pads. (There can't be invokes without landing
pads, so that case is covered too)
The test case for this has to be a separate file because this pass is a
`ModulePass` and `Changed` is computed based on the whole module.
Reviewers: tlively
Subscribers: dschuff, sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D72308
Matt Arsenault [Sat, 4 Jan 2020 17:50:18 +0000 (12:50 -0500)]
AMDGPU/GlobalISel: Legalize G_READCYCLECOUNTER
Akira Hatanaka [Sat, 4 Jan 2020 16:32:49 +0000 (08:32 -0800)]
[CodeGen][ObjC] Push the properties of a protocol before pushing the
properties of the protocol it inherits
This fixes a bug where the type string for a @dynamic property of an
@implementation didn't have 'D' in it when the protocol it conforms to
redeclares the property declared in the base protocol.
rdar://problem/
45503561
Evgenii Stepanov [Tue, 7 Jan 2020 00:12:52 +0000 (16:12 -0800)]
[msan] Fix underflow in qsort interceptor.
Mark de Wever [Mon, 6 Jan 2020 23:49:41 +0000 (00:49 +0100)]
[NFC] Fixes -Wrange-loop-analysis warnings
This avoids new warnings due to D68912 adds -Wrange-loop-analysis to -Wall.
Fangrui Song [Mon, 6 Jan 2020 18:16:28 +0000 (10:16 -0800)]
Add Triple::isX86()
Reviewed By: craig.topper, skan
Differential Revision: https://reviews.llvm.org/D72247
Akira Hatanaka [Mon, 6 Jan 2020 23:45:27 +0000 (15:45 -0800)]
Use FileCheck instead of grep
Matt Arsenault [Wed, 25 Dec 2019 14:06:05 +0000 (09:06 -0500)]
AMDGPU/GlobalISel: Select G_UADDE/G_USUBE
Matt Arsenault [Sat, 2 Nov 2019 16:30:59 +0000 (09:30 -0700)]
AMDGPU/GlobalISel: Replace handling of boolean values
This solves selection failures with generated selection patterns,
which would fail due to inferring the SGPR reg bank for virtual
registers with a set register class instead of VCC bank. Use
instruction selection would constrain the virtual register to a
specific class, so when the def was selected later the bank no longer
was set to VCC.
Remove the SCC reg bank. SCC isn't directly addressable, so it
requires copying from SCC to an allocatable 32-bit register during
selection, so these might as well be treated as 32-bit SGPR values.
Now any scalar boolean value that will produce an outupt in SCC should
be widened during RegBankSelect to s32. Any s1 value should be a
vector boolean during selection. This makes the vcc register bank
unambiguous with a normal SGPR during selection.
Summary of how this should now work:
- G_TRUNC is always a no-op, and never should use a vcc bank result.
- SALU boolean operations should be promoted to s32 in RegBankSelect
apply mapping
- An s1 value means vcc bank at selection. The exception is for
legalization artifacts that use s1, which are never VCC. All other
contexts should infer the VCC register classes for s1 typed
registers. The LLT for the register is now needed to infer the
correct register class. Extensions with vcc sources should be
legalized to a select of constants during RegBankSelect.
- Copy from non-vcc to vcc ensures high bits of the input value are
cleared during selection.
- SALU boolean inputs should ensure the inputs are 0/1. This includes
select, conditional branches, and carry-ins.
There are a few somewhat dirty details. One is that G_TRUNC/G_*EXT
selection ignores the usual register-bank from register class
functions, and can't handle truncates with VCC result banks. I think
this is OK, since the artifacts are specially treated anyway. This
does require some care to avoid producing cases with vcc. There will
also be no 100% reliable way to verify this rule is followed in
selection in case of register classes, and violations manifests
themselves as invalid copy instructions much later.
Standard phi handling also only considers the bank of the result
register, and doesn't insert copies to make the source banks
match. This doesn't work for vcc, so we have to manually correct phi
inputs in this case. We should add a verifier check to make sure there
are no phis with mixed vcc and non-vcc register bank inputs.
There's also some duplication with the LegalizerHelper, and some code
which should live in the helper. I don't see a good way to share
special knowledge about what types to use for intermediate operations
depending on the bank for example. Using the helper to replace
extensions with selects also seems somewhat awkward to me.
Another issue is there are some contexts calling
getRegBankFromRegClass that apparently don't have the LLT type for the
register, but I haven't yet run into a real issue from this.
This also introduces new unnecessary instructions in most cases, since
we don't yet try to optimize out the zext when the source is known to
come from a compare.
Matt Arsenault [Tue, 22 Oct 2019 04:39:42 +0000 (21:39 -0700)]
TableGen/GlobalISel: Handle default operands that are used
Copy the logic from the existing handling in the DAG matcher emittter.
This will enable some AMDGPU pattern cleanups without breaking
GlobalISel tests, and eventually handle importing more patterns.
The test is a bit annoying since the sections seem to randomly sort
themselves if anything else is added in the future.
Matt Arsenault [Tue, 24 Dec 2019 19:49:31 +0000 (14:49 -0500)]
GlobalISel: Implement lower for G_INTRINSIC_ROUND
Mostly copied from AMDGPU lowering implementation, except used
G_SITOFP instead of directly creating a select on -1.0, 0.0.
Jason Molenda [Mon, 6 Jan 2020 23:18:22 +0000 (15:18 -0800)]
Change the patterns to include the prefix '= ' so we don't pass errantly.
Looking at a sometimes-passing test case on a platform
where random values were being returned - sometimes
the expected digit ('1' or '2') would be included in the
random returned value. Add a prefix to reduce the likelihood of
this a bit.
Philip Reames [Mon, 6 Jan 2020 23:13:45 +0000 (15:13 -0800)]
[X86] Move an enum definition into a header to simplify future patches [NFC]
Evgenii Stepanov [Fri, 20 Dec 2019 20:07:04 +0000 (12:07 -0800)]
[msan] Check qsort input.
Summary:
Qsort interceptor suppresses all checks by unpoisoning the data in the
wrapper of a comparator function, and then unpoisoning the output array
as well.
This change adds an explicit run of the comparator on all elements of
the input array to catch any sanitizer bugs.
Reviewers: vitalybuka
Subscribers: #sanitizers, llvm-commits
Tags: #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D71780
Davide Italiano [Mon, 6 Jan 2020 22:58:01 +0000 (14:58 -0800)]
[NSArray] Remove a very old and deprecated formatter.
Checked with the Foundation folks.
Petr Hosek [Sat, 28 Dec 2019 00:25:43 +0000 (16:25 -0800)]
[CMake] Pass symlink dependency to add_llvm_install_targets explicitly
The install-${name}-stripped targets don't strip when ${name} is being
symlinked, e.g. llvm-ar or llvm-objcopy. The problem is that
llvm_install_symlink passes install-${dest} as a dependency of
install-${name}, e.g. install-llvm-ar becomes a dependency of both
install-llvm-ranlib and install-llvm-ranlib-stripped. What this means is
that when installing a distribution that contains both llvm-ar and
llvm-ranlib is that first the stripped version of llvm-ar is installed
(by the install-llvm-ar-stripped target) and then it's overwritten by an
unstripped version of llvm-ar bnecause install-llvm-ranlib-stripped has
install-llvm-ranlib as a dependency as mentioned earlier. To avoid this
issue, rather than passing the install-${dest} as dependency, we
introduce a new argument to add_llvm_install_targets for symlink target
which expands it into an appropriate dependency, i.e. install-${dest}
for install-${name} target and install-${dest}-stripped for
install-${name}-stripped.
Differential Revision: https://reviews.llvm.org/D71951
Bill Wendling [Tue, 24 Dec 2019 00:57:41 +0000 (16:57 -0800)]
Don't rely on 'l'(ell) modifiers to indicate a label reference
Summary:
It's not necessary to use an 'l'(ell) modifier when referencing a label.
Treat block addresses and MBB references as if the modifier is used
anyway. This prevents us from generating references to ficticious
labels.
Reviewers: jyknight, nickdesaulniers, hfinkel
Subscribers: hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D71849
Thomas Preud'homme [Wed, 11 Dec 2019 23:48:01 +0000 (23:48 +0000)]
[FileCheck] Remove FileCheck prefix in API
Summary:
When FileCheck was made a library, types in the public API were renamed
to add a FileCheck prefix, such as Pattern to FileCheckPattern. Many
types were moved into a private interface and thus don't need this
prefix anymore. This commit removes those unneeded prefixes.
Reviewers: jhenderson, jdenny, probinson, grimar, arichardson, rnk
Reviewed By: jhenderson
Subscribers: hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D72186
Jinsong Ji [Mon, 6 Jan 2020 19:05:12 +0000 (19:05 +0000)]
[PowerPC][NFC] Rename record instructions to use _rec suffix instead of o
We use o suffix to indicate record form instuctions,
(as it is similar to dot '.' in mne?)
This was fine before, as we did not support XO-form.
However, with https://reviews.llvm.org/D66902,
we now have XO-form support.
It becomes confusing now to still use 'o' for record form,
and it is weird to have something like 'Oo' .
This patch rename all 'o' instructions to use '_rec' instead.
Also rename `isDot` to `isRecordForm`.
Reviewed By: #powerpc, hfinkel, nemanjai, steven.zhang, lkail
Differential Revision: https://reviews.llvm.org/D70758
Tyker [Mon, 6 Jan 2020 21:04:55 +0000 (22:04 +0100)]
[Diagnostic] make Wmisleading-indendation not warn about labels
Reviewers: aaron.ballman, xbolva00
Reviewed By: aaron.ballman
Subscribers: nickdesaulniers, nathanchance
Differential Revision: https://reviews.llvm.org/D72202
Matt Arsenault [Mon, 9 Sep 2019 20:55:49 +0000 (16:55 -0400)]
GlobalISel: Fix unsupported legalize action
This would complain about invalid legalizer rules otherwise.
Mark some operations as unsupported for AMDGPU. This currently seems
to produce the same legalize error as when no rules are defined, but
eventually this should produce a proper user facing error.
Matt Arsenault [Sat, 4 Jan 2020 22:06:47 +0000 (17:06 -0500)]
GlobalISel: Correct result type for G_FCMP in lowerFPTOUI
Using the final result type doesn't make any sense. Use the natural
default boolean type for the select condition.
Matt Arsenault [Sat, 4 Jan 2020 19:13:06 +0000 (14:13 -0500)]
GlobalISel: Start adding computeNumSignBits to GISelKnownBits
Matt Arsenault [Sat, 4 Jan 2020 20:48:46 +0000 (15:48 -0500)]
AMDGPU: Fix legalizing f16 fpow
The existing test only covered one case for r600. The use of
mul_legacy also looks suspicious to me, but leave it for now. The
patterns are also not making use of source modifiers.
Matt Arsenault [Mon, 6 Jan 2020 20:39:05 +0000 (15:39 -0500)]
AMDGPU: Use ImmLeaf
This solves one GlobalISel importer error, but the pattern still fails
for another reason.
Matt Arsenault [Mon, 6 Jan 2020 19:39:13 +0000 (14:39 -0500)]
AMDGPU: Use ImmLeaf for inline immediate predicates
Matt Arsenault [Fri, 6 Dec 2019 18:36:34 +0000 (00:06 +0530)]
llc/MIR: Fix setFunctionAttributes for MIR functions
A random set of attributes are implemented by llc/opt forcing the
string attributes on the IR functions before processing anything. This
would not happen for MIR functions, which have not yet been created at
this point.
Use a callback in the MIR parser, purely to avoid dealing with the
ugliness that the command line flags are in a .inc file, and would
require allowing access to these flags from multiple places (either
from the MIR parser directly, or a new utility pass to implement these
flags). It would probably be better to cleanup the flag handling into
a separate library.
This is in preparation for treating more command line flags with a
corresponding function attribute in a more uniform way. The fast math
flags in particular have a messy system where the command line flag
sets the behavior from a function attribute if present, and otherwise
the command line flag. This means if any other pass tries to inspect
the function attributes directly, it will be inconsistent with the
intended behavior. This is also inconsistent with the current behavior
of -mcpu and -mattr, which overwrites any pre-existing function
attributes. I would like to move this to consistenly have the command
line flags not overwrite any pre-existing attributes, and to always
ensure the command line flags are consistent with the function
attributes.
Craig Topper [Mon, 6 Jan 2020 22:06:20 +0000 (14:06 -0800)]
[X86] Improve v4i32->v4f64 uint_to_fp for AVX1/AVX2 targets.
Use zext+or+fsub to do the conversion. Similar to D71971.
Differential Revision: https://reviews.llvm.org/D71971
Jonas Devlieghere [Mon, 6 Jan 2020 21:57:55 +0000 (13:57 -0800)]
[lldb/Docs] Describe optional dependencies on build page.
List the different CMake flags controlling the optional dependencies as
per the discussion on the mailing list:
http://lists.llvm.org/pipermail/lldb-dev/2020-January/015867.html
Craig Topper [Mon, 6 Jan 2020 21:37:47 +0000 (13:37 -0800)]
[LegalizeTypes] Add widening support for STRICT_FSETCC/FSETCCS
This patch adds widening which really just scalarizes because we don't have a strategy for the extra elements we would need to pad with.
Differential Revision: https://reviews.llvm.org/D72193
Craig Topper [Mon, 6 Jan 2020 21:34:45 +0000 (13:34 -0800)]
[X86] Rename vec-strict-*-cmp.ll to vec-strict-cmp-*.ll to match other strict files wich have the size at the end. NFC
Alexey Bataev [Mon, 6 Jan 2020 21:14:34 +0000 (16:14 -0500)]
[OPENMP50]Support lastprivate conditional updates in inc/dec unary ops.
Added support for checking of updates of variables used in unary
pre(pos) inc/dec expressions.
stevewan [Mon, 6 Jan 2020 21:28:13 +0000 (16:28 -0500)]
[NFC] Test commit, revert whitespace change
As per the Developer Policy, upon obtaining commit access.
stevewan [Mon, 6 Jan 2020 21:24:27 +0000 (16:24 -0500)]
[NFC] Test commit, whitespace change
As per the Developer Policy, upon obtaining commit access.
Sanjay Patel [Mon, 6 Jan 2020 20:24:30 +0000 (15:24 -0500)]
[x86] add tests for concat self + shuffle; NFC
Kelvin Li [Mon, 6 Jan 2020 20:00:10 +0000 (15:00 -0500)]
[OpenMP] Fix incorrect property of __has_attribute() macro
__has_attribute(fallthough) -> __has_attribute(fallthrough)
Submitted by: kiszk (Kazuaki Ishizaki <ishizaki@jp.ibm.com>)
Differential Revision: https://reviews.llvm.org/D72287
Evgenii Stepanov [Tue, 10 Dec 2019 00:52:31 +0000 (16:52 -0800)]
Lower TAGPstack with negative offset to SUBG.
Summary:
This never really occurs in the current codegen, so only a MIR test is
possible.
Reviewers: ostannard, pcc
Subscribers: hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D72123
Amara Emerson [Wed, 11 Dec 2019 22:42:16 +0000 (14:42 -0800)]
[X86] Fix an 8 bit testb being selected when folding a volatile i32 load pattern.
Differential Revision: https://reviews.llvm.org/D71581
Jinsong Ji [Fri, 3 Jan 2020 20:25:19 +0000 (20:25 +0000)]
[PowerPC][LoopVectorize] Extend getRegisterClassForType to consider double and other floating point type
In https://reviews.llvm.org/D67148, we use isFloatTy to test floating
point type, otherwise we return GPRRC.
So 'double' will be classified as GPRRC, which is not accurate.
This patch covers other floating point types.
Reviewed By: #powerpc, nemanjai
Differential Revision: https://reviews.llvm.org/D71946
Kazuaki Ishizaki [Mon, 6 Jan 2020 18:21:05 +0000 (10:21 -0800)]
[lld] Fix trivial typos in comments
Reviewed By: ruiu, MaskRay
Differential Revision: https://reviews.llvm.org/D72196
Siva Chandra Reddy [Fri, 3 Jan 2020 20:00:45 +0000 (12:00 -0800)]
[libc] Move all tests to a top level `test` directory.
A toplevel target, `check-libc` has also been added.
Reviewers: abrachet, phosek
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D72177
Jonas Devlieghere [Mon, 6 Jan 2020 18:08:05 +0000 (10:08 -0800)]
[lldb/Docs] Fix capitalization typo.
This has been bothering me for way too long.
Jonas Devlieghere [Mon, 6 Jan 2020 17:56:46 +0000 (09:56 -0800)]
[lldb/CMake] Only set PYTHON_HOME on Windows
My earlier change for Python auto-detection caused PYTHON_HOME to be set
unconditionally, while before the change this only happened for Windows.
This caused the PythonDataObjectsTest to fail with an import error.
Fangrui Song [Sat, 21 Dec 2019 22:59:16 +0000 (14:59 -0800)]
[CMake] Add $ORIGIN/../../../../lib to rpath if BUILD_SHARED_LIBS or LLVM_LINK_LLVM_DYLIB on *nix
Summary:
lib/python2.7/dist-packages/lldb/_lldb.so is a symlink to lib/liblldb.so,
which depends on lib/libLLVM*.so (-DBUILD_SHARED_LIBS=ON) or lib/libLLVM-10git.so
(-DLLVM_LINK_LLVM_DYLIB=ON). Add an additional rpath `$ORIGIN/../../../../lib` so
that _lldb.so can be loaded from Python.
This fixes an import error from lib/python2.7/dist-packages/lldb/__init__.py
from . import _lldb
ImportError: libLLVMAArch64CodeGen.so.10git: cannot open shared object file: No such file or directory
The following configurations will work:
* -DBUILD_SHARED_LIBS=ON
* -DBUILD_SHARED_LIBS=OFF -DLLVM_LINK_LLVM_DYLIB=ON
* -DBUILD_SHARED_LIBS=OFF -DLLVM_LINK_LLVM_DYLIB=ON -DCLANG_LINK_CLANG_DYLIB=ON
(-DCLANG_LINK_CLANG_DYLIB=ON depends on -DLLVM_LINK_LLVM_DYLIB=ON)
Reviewed By: labath
Differential Revision: https://reviews.llvm.org/D71800
Nico Weber [Mon, 6 Jan 2020 15:54:13 +0000 (10:54 -0500)]
Make check-llvm run 50% faster on macOS, 18% faster on Windows.
While looking at cycle time graphs of some of my bots, I noticed
that
327894859cc made check-llvm noticeably slower on macOS and
Windows.
As it turns out, the 5 substitutions added in that change were
enough to cause lit to thrash the build-in cache in re.compile()
(re.sub() is implemented as re.compile().sub()), and apparently
applySubstitutions() is on the cricital path and slow when all
regexes need to compile all the time.
(See `_MAXCACHE = 512` in cpython/Lib/re.py)
Supporting full regexes for lit substitutions seems a bit like
overkill, but for now add a simple unbounded cache to recover
the lost performance.
No intended behavior change.
Jonas Devlieghere [Mon, 6 Jan 2020 17:52:09 +0000 (09:52 -0800)]
[lldb/Test] Move @skipIfAsan from test class to test methods.
skipTestIfFn can only be used to decorate a test method.
Fangrui Song [Sun, 5 Jan 2020 22:56:27 +0000 (14:56 -0800)]
[llvm-readelf] Print EI_ABIVERSION as decimal instead of hexadecimal
This matches GNU readelf and llvm-readobj.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D72234
LLVM GN Syncbot [Mon, 6 Jan 2020 17:22:13 +0000 (17:22 +0000)]
[gn build] Port
350da402ef6
Tamás Zolnai [Sat, 4 Jan 2020 13:05:09 +0000 (14:05 +0100)]
[clang-tidy] new check: bugprone-signed-char-misuse
Summary:
This check searches for signed char -> integer conversions which might
indicate programming error, because of the misinterpretation of char
values. A signed char might store the non-ASCII characters as negative
values. The human programmer probably expects that after an integer
conversion the converted value matches with the character code
(a value from [0..255]), however, the actual value is in
[-128..127] interval.
See also:
STR34-C. Cast characters to unsigned char before converting to larger integer sizes
<https://wiki.sei.cmu.edu/confluence/display/c/STR34-C.+Cast+characters+to+unsigned+char+before+converting+to+larger+integer+sizes>
By now this check is limited to assignment / variable declarations.
If we would catch all signed char -> integer conversion, then it would
produce a lot of findings and also false positives. So I added only
this use case now, but this check can be extended with additional
use cases later.
The CERT documentation mentions another use case when the char is
used for array subscript. Next to that a third use case can be
the signed char - unsigned char comparison, which also a use case
where things happen unexpectedly because of conversion to integer.
Reviewers: alexfh, hokein, aaron.ballman
Reviewed By: aaron.ballman
Subscribers: sylvestre.ledru, whisperity, Eugene.Zelenko, mgorny, xazax.hun, cfe-commits
Tags: #clang, #clang-tools-extra
Differential Revision: https://reviews.llvm.org/D71174
Jonas Devlieghere [Mon, 6 Jan 2020 17:06:09 +0000 (09:06 -0800)]
[lldb/Test] Temporarily skip TestFoundationDisassembly on the ASan bot.
This test is timing out on the sanitized bot on GreenDragon. Temporarily
disable it to increase the signal-to-noise ration.
Jonas Devlieghere [Mon, 6 Jan 2020 16:49:36 +0000 (08:49 -0800)]
[lldb/CMake] Autodetect Python dependency
Python was the last remaining "optional" dependency for LLDB. This moves
the code to find Python into FindPythonInterpAndLibs using the same
principles as FindCursesAndPanel.
Differential revision: https://reviews.llvm.org/D72107
diggerlin [Mon, 6 Jan 2020 16:45:00 +0000 (11:45 -0500)]
[AIX] Use csect reference for function address constants
SUMMARY:
We currently emit a reference for function address constants as labels;
for example:
foo_ptr:
.long foo
however, there may be no such label in the case where the function is
undefined. Although the label exists when the function is defined, we
will (to be consistent) also use a csect reference in that case.
Address one comment
https://reviews.llvm.org/D71144#inline-653255
Reviewers: daltenty,hubert.reinterpretcast,jasonliu,Xiangling_L
Subscribers: cebowleratibm, wuzish, nemanjai
Differential Revision: https://reviews.llvm.org/D71144
Guillaume Chatelet [Mon, 6 Jan 2020 12:31:45 +0000 (13:31 +0100)]
[llvm-libc] Fix missing virtual destructor
Summary: This patch adds a virtual destructor to the Command class.
Reviewers: sivachandra
Subscribers: mgorny, MaskRay, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D72253
David Green [Mon, 6 Jan 2020 15:54:36 +0000 (15:54 +0000)]
[ARM] Use the correct opcodes for Thumb2 segmented stack frame lowering
The segmented stack lowering code appears to be using ARM opcodes under
Thumb2. The MRC opcode will be the same for Thumb and ARM, but t2LDR
seems wrong. Either way, using the correct thumb vs arm opcodes is more
correct.
Differential Revision: https://reviews.llvm.org/D72074
David Green [Mon, 6 Jan 2020 10:58:14 +0000 (10:58 +0000)]
[ARM] Use correct TRAP opcode for thumb in FastISel
We were previously unconditionally using the ARM::TRAP opcode, even
under Thumb. My understanding is that these are essentially the same
thing (they both result in a trap under Thumb), but the ARM::TRAP opcode
is marked as requiring IsARM, so it is more correct to use ARM::tTRAP.
Differential Revision: https://reviews.llvm.org/D72075
diggerlin [Mon, 6 Jan 2020 16:38:22 +0000 (11:38 -0500)]
[AIX] Use csect reference for function address constants
SUMMARY:
We currently emit a reference for function address constants as labels;
for example:
foo_ptr:
.long foo
however, there may be no such label in the case where the function is
undefined. Although the label exists when the function is defined, we
will (to be consistent) also use a csect reference in that case.
Reviewers: daltenty,hubert.reinterpretcast,jasonliu,Xiangling_L
Subscribers: cebowleratibm, wuzish, nemanjai
Differential Revision: https://reviews.llvm.org/D71144
Mark de Wever [Wed, 1 Jan 2020 16:23:18 +0000 (17:23 +0100)]
Adds -Wrange-loop-analysis to -Wall
This makes the range loop warnings part of -Wall.
Fixes PR32823: Warn about accidental coping of data in range based for
Differential Revision: https://reviews.llvm.org/D68912
Recomitted after fixing the warnings it created.
Mark de Wever [Sun, 5 Jan 2020 13:26:39 +0000 (14:26 +0100)]
[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
Simon Pilgrim [Mon, 6 Jan 2020 16:36:33 +0000 (16:36 +0000)]
[AMDGPU] Fix "use of uninitialized variable" static analyzer warning. NFCI.
Add "unreachable" default case to AMDGPUTargetStreamer::getArchNameFromElfMach
Simon Pilgrim [Mon, 6 Jan 2020 16:17:05 +0000 (16:17 +0000)]
Fix "use of uninitialized variable" static analyzer warnings. NFCI.
Add "unreachable" default cases like we do for the other switch()s in X86MCInstLower::Lower
Simon Pilgrim [Mon, 6 Jan 2020 16:15:17 +0000 (16:15 +0000)]
Fix "use of uninitialized variable" static analyzer warning. NFCI.
Simon Tatham [Mon, 6 Jan 2020 16:33:14 +0000 (16:33 +0000)]
[ARM,MVE] Fix many signedness errors in MVE intrinsics.
Summary:
Running an end-to-end test last week I noticed that a lot of the ACLE
intrinsics that operate differently on vectors of signed and unsigned
integers were ending up generating the signed version of the
instruction unconditionally. This is because the IR intrinsics had no
way to distinguish signed from unsigned: the LLVM type system just
calls them both `v8i16` (or whatever), so you need either separate
intrinsics for signed and unsigned, or a flag parameter that tells
ISel which one to choose.
This patch fixes all the problems of that kind that I've noticed, by
adding an i32 flag parameter to many of the IR intrinsics which is set
to 1 for unsigned (matching the existing practice in cases where we
got it right), and conditioning all the isel patterns on that flag. So
the fundamental change is in `IntrinsicsARM.td`, changing the
low-level IR intrinsics API; there are knock-on changes in
`arm_mve.td` (adjusting code gen for the ACLE intrinsics to use the
modified API) and in `ARMInstrMVE.td` (adjusting isel to expect the
new unsigned flags). The rest of this patch is boringly updating tests.
Reviewers: dmgreen, miyuki, MarkMurrayARM
Reviewed By: dmgreen
Subscribers: kristof.beyls, hiraditya, cfe-commits, llvm-commits
Tags: #clang, #llvm
Differential Revision: https://reviews.llvm.org/D72270
Simon Tatham [Mon, 6 Jan 2020 16:33:05 +0000 (16:33 +0000)]
[ARM,MVE] Support -ve offsets in gather-load intrinsics.
Summary:
The ACLE intrinsics with `gather_base` or `scatter_base` in the name
are wrappers on the MVE load/store instructions that take a vector of
base addresses and an immediate offset. The immediate offset can be up
to 127 times the alignment unit, and it can be positive or negative.
At the MC layer, we got that right. But in the Sema error checking for
the wrapping intrinsics, the offset was erroneously constrained to be
positive.
To fix this I've adjusted the `imm_mem7bit` class in the Tablegen that
defines the intrinsics. But that causes integer literals like
`0xfffffffffffffe04` to appear in the autogenerated calls to
`SemaBuiltinConstantArgRange`, which provokes a compiler warning
because that's out of the non-overflowing range of an `int64_t`. So
I've also tweaked `MveEmitter` to emit that as `-0x1fc` instead.
Updated the tests of the Sema checks themselves, and also adjusted a
random sample of the CodeGen tests to actually use negative offsets
and prove they get all the way through code generation without causing
a crash.
Reviewers: dmgreen, miyuki, MarkMurrayARM
Reviewed By: dmgreen
Subscribers: kristof.beyls, cfe-commits, llvm-commits
Tags: #clang, #llvm
Differential Revision: https://reviews.llvm.org/D72268
Simon Tatham [Mon, 6 Jan 2020 16:28:18 +0000 (16:28 +0000)]
[ARM,MVE] Generate the right instruction for vmaxnmq_m_f16.
Summary:
Due to a copy-paste error in the isel patterns, the predicated version
of this intrinsic was expanding to the `VMAXNMT.F32` instruction
instead of `VMAXNMT.F16`. Similarly for vminnm.
Reviewers: dmgreen, miyuki, MarkMurrayARM
Reviewed By: dmgreen
Subscribers: kristof.beyls, hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D72269
Matt Arsenault [Mon, 2 Sep 2019 07:27:20 +0000 (03:27 -0400)]
AMDGPU/GlobalISel: Select scalar v2s16 G_BUILD_VECTOR
Michał Górny [Sat, 4 Jan 2020 04:34:41 +0000 (05:34 +0100)]
[lldb] [Process/NetBSD] Remove unused orig_*ax use
orig_*ax logic is Linux-specific, and was never used on NetBSD.
In fact, its support seems to be a dead code entirely.
Differential Revision: https://reviews.llvm.org/D72195
Matt Arsenault [Wed, 1 Jan 2020 20:23:58 +0000 (15:23 -0500)]
AMDGPU/GlobalISel: Select more G_EXTRACTs correctly
This assumed a 32-bit extract size, which would produce invalid copies
with 64-bit extracts. Handle the easy case. Ideally we would have a
way to get the proper subreg index for any 32-bit offset, but there
should probably be a tablegenerated way of getting the subreg index
for any size and offset.
Nicolas Vasilache [Thu, 2 Jan 2020 20:25:21 +0000 (15:25 -0500)]
[mlir][Linalg] Reimplement and extend getStridesAndOffset
Summary: This diff reimplements getStridesAndOffset in a significantly simpler way by operating on the AffineExpr and calling into simplifyAffineExpr instead of rolling its own saturating arithmetic.
As a consequence it becomes quite simple to extend the behavior of getStridesAndOffset to encompass more cases by manipulating the AffineExpr more directly.
The divisions are still filtered out and continue to yield fully dynamic strides.
Simplifying the divisions is left for a later time if compelling use cases arise.
Relevant tests are added.
Reviewers: ftynse
Subscribers: mehdi_amini, rriddle, jpienaar, burmako, shauheen, antiagainst, arpith-jacob, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D72098
Mitchell Balan [Mon, 6 Jan 2020 14:21:41 +0000 (09:21 -0500)]
[clang-format] fix conflict between FormatStyle::BWACS_MultiLine and BeforeCatch/BeforeElse
Summary:
Found a bug introduced with BraceWrappingFlags AfterControlStatement MultiLine. This feature conflicts with the existing BeforeCatch and BeforeElse flags.
For example, our team uses BeforeElse.
if (foo ||
bar) {
doSomething();
}
else {
doSomethingElse();
}
If we enable MultiLine (which we'd really love to do) we expect it to work like this:
if (foo ||
bar)
{
doSomething();
}
else {
doSomethingElse();
}
What we actually get is:
if (foo ||
bar)
{
doSomething();
}
else
{
doSomethingElse();
}
Reviewers: MyDeveloperDay, Bouska, mitchell-stellar
Patch by: pastey
Subscribers: Bouska, cfe-commits
Tags: clang
Differential Revision: https://reviews.llvm.org/D71939
Simon Pilgrim [Mon, 6 Jan 2020 13:44:55 +0000 (13:44 +0000)]
[X86] Add extra PR43971 test case mentioned in D70267
Simon Pilgrim [Mon, 6 Jan 2020 13:16:43 +0000 (13:16 +0000)]
[CostModel][X86] Add missing scalar i64->f32 uitofp costs
Simon Pilgrim [Mon, 6 Jan 2020 10:42:48 +0000 (10:42 +0000)]
[DAG] DAGCombiner::XformToShuffleWithZero - use APInt::extractBits helper. NFCI.
James Henderson [Fri, 3 Jan 2020 14:06:57 +0000 (14:06 +0000)]
[test][DebugInfo][NFC] Rename method for clarity
The checkGetOrParseLineTableEmitsError function could end up generating
both recoverable and unrecoverable errors, but it is only intended for
handling the latter.
Reviewed by: dblaikie
Differential Revision: https://reviews.llvm.org/D72156
James Henderson [Mon, 6 Jan 2020 10:15:44 +0000 (10:15 +0000)]
[NFC] Fix trivial typos in comments
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D72143
Patch by Kazuaki Ishizaki.
Simon Pilgrim [Mon, 6 Jan 2020 10:20:20 +0000 (10:20 +0000)]
Fix MSVC "not all control paths return a value" warning. NFCI.
Sjoerd Meijer [Mon, 6 Jan 2020 09:56:02 +0000 (09:56 +0000)]
[ARM][MVE] More MVETailPredication debug messages. NFC.
I've added a few more debug messages to MVETailPredication because I wanted to
trace better which instructions are added/removed. And while I was at it, I
factored out one function which I thought was clearer, and have added some
comments to describe better the flow between MVETailPredication and
ARMLowOverheadLoops.
Differential Revision: https://reviews.llvm.org/D71549
Shengchen Kan [Tue, 31 Dec 2019 16:19:56 +0000 (00:19 +0800)]
Add interface emitPrefix for MCCodeEmitter
Differential Revision: https://reviews.llvm.org/D72047
Ehud Katz [Mon, 6 Jan 2020 08:51:55 +0000 (10:51 +0200)]
[APFloat] Fix compilation warnings
Kern Handa [Mon, 6 Jan 2020 09:01:59 +0000 (10:01 +0100)]
[mlir] Update mlir/CMakeLists.txt to install *.def files
This is needed to consume mlir after it has been installed of the source
tree. Without this, consuming mlir results a build error.
Differential Revision: https://reviews.llvm.org/D72232
Neil Henning [Wed, 11 Dec 2019 13:20:42 +0000 (13:20 +0000)]
Add ExternalAAWrapperPass to createLegacyPMAAResults.
Our out-of-tree custom aliasing solution for the HPC# Burst compiler
here at Unity makes use of the `ExternalAAwrapperPass` infrastructure to
insert our custom aliasing resolution into the core of LLVM. This is
great for all cases except for function inlining, where because
`createLegacyPMAAResults` does not make use of `ExternalAAWrapperPass`,
when we have a definite no-alias result within a function it won't be
propagated to the calling function during inlining.
This commit just rectifies this oversight by adding the missing
dependency.
Differential Revision: https://reviews.llvm.org/D71348
Ehud Katz [Mon, 6 Jan 2020 08:05:00 +0000 (10:05 +0200)]
[APFloat] Add recoverable string parsing errors to APFloat
Implementing the APFloat part in PR4745.
Differential Revision: https://reviews.llvm.org/D69770
Anton Afanasyev [Fri, 29 Nov 2019 11:22:10 +0000 (14:22 +0300)]
[Metadata] Add TBAA struct metadata to `AAMDNode`
Summary:
Make `AAMDNodes`' `getAAMetadata()` and `setAAMetadata()` to take `!tbaa.struct`
into account as well as `!tbaa`. This impacts llvm.org/pr42022.
This is a temprorary fix needed to keep `!tbaa.struct` tag by SROA pass.
New field `TBAAStruct` should be deleted when `!tbaa` tag replaces `!tbaa.struct`.
Merging two `!tbaa.struct`'s to one is conservatively considered to be `nullptr`
(giving `MayAlias`) -- this could be enhanced, but relying on the said future
replacement.
Reviewers: RKSimon, spatel, vporpo
Subscribers: hiraditya, kosarev, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D70924
Kristina Brooks [Mon, 6 Jan 2020 07:21:13 +0000 (07:21 +0000)]
[Clang] Force rtlib=platform in test to avoid fails with CLANG_DEFAULT_RTLIB
Driver test `cross-linux.c` fails when CLANG_DEFAULT_RTLIB is "compiler-rt"
as the it expects a GCC-style `"crtbegin.o"` after `"crti.o"` but instead
receives something akin to this in the frontend invocation:
```
"crt1.o" "crti.o"
"/o/b/llvm/bin/../lib/clang/10.0.0/lib/linux/clang_rt.crtbegin-x86_64.o"
```
This patch adds an override to `cross-linux.c` tests so the expected result
is produced regardless of the compile-time default rtlib, as having tests
fail due to that is fairly confusing. After applying the patch, the test
passes regardless of the CLANG_DEFAULT_RTLIB setting.
Differential Revision: https://reviews.llvm.org/D72236
Craig Topper [Mon, 6 Jan 2020 06:54:34 +0000 (22:54 -0800)]
[TargetLowering] Use SETCC input type to call getBooleanContents instead of the setcc result type.
This isn't a functonal change since we also check the bit width is the
same and the input type is integer. This guarantees the input and
output type are the same. But passing the input type makes the code
more readable.
MaheshRavishankar [Thu, 2 Jan 2020 23:17:48 +0000 (15:17 -0800)]
[mlir][spirv] Update SPIR-V documentation with information about
lowering to SPIR-V dialect.
Add information about
- SPIRVTypeConverter
- SPIRVOpLowering
- Utility functions used in lowering to SPIR-V dialect.
Fangrui Song [Mon, 6 Jan 2020 04:00:07 +0000 (20:00 -0800)]
[MC] Reorder members of MCFragment's subclasses to decrease padding
On a 64-bit platform:
sizeof(MCBoundaryAlignFragment): 64 -> 56
sizeof(MCOrgFragment): 72 -> 64
sizeof(MCFillFragment): 80 -> 72
sizeof(MCLEBFragment): 88 -> 80
Fangrui Song [Mon, 6 Jan 2020 03:02:59 +0000 (19:02 -0800)]
[MC] Reorder MCFragment members to decrease padding
sizeof(MCFragment) does not change, but some if its subclasses do, e.g.
on a 64-bit platform,
sizeof(MCEncodedFragment) decreases from 64 to 56,
sizeof(MCDataFragment) decreases from 224 to 216.
QingShan Zhang [Mon, 6 Jan 2020 03:00:58 +0000 (03:00 +0000)]
[DAGCombine] Don't check the legality of type when combine the SIGN_EXTEND_INREG
This is the DAG node for SIGN_EXTEND_INREG :
t21: v4i32 = sign_extend_inreg t18, ValueType:ch:v4i16
It has two operands. The first one is the value it want to extend, and the second
one is the type to specify how to extend the value. For this example, it means
that, it is signed extend the t18(v4i32) from v4i16 to v4i32. That is
the semantics of c code:
vector int foo(vector int m) {
return m << 16 >> 16;
}
And it could be any vector type that hardware support the operation, though
the type 'v4i16' is NOT legal for the target. When we are trying to combine
the srl + sra, what we did now is calling the TLI.isOperationLegal(), which
will also check the legality of the type. That doesn't make sense.
Differential Revision: https://reviews.llvm.org/D70230
Fangrui Song [Mon, 6 Jan 2020 02:44:22 +0000 (18:44 -0800)]
[MC] Delete MCFragment::isDummy. NFC
isa<...>, dyn_cast<...> and cast<...> are used by other fragments.
Don't make MCDummyFragment special.
Craig Topper [Mon, 6 Jan 2020 01:01:57 +0000 (17:01 -0800)]
[X86] Improve v2i64->v2f32 and v4i64->v4f32 uint_to_fp on avx and avx2 targets.
Summary:
Based on Simon's D52965, but improved to handle strict fp and improve some of the shuffling.
Rather than use v2i1/v4i1 and let type legalization continue, just generate all the code with legal types and use an explicit shuffle.
I also added an explicit setcc to the v4i64 code to match the semantics of vselect which doesn't just use the sign bit. I'm also using a v4i64->v4i32 truncate instead of the shuffle in Simon's original code. With the setcc this will become a pack.
Future work can look into using X86ISD::BLENDV and a different shuffle that only moves the sign bit.
Reviewers: RKSimon, spatel
Reviewed By: RKSimon
Subscribers: hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D71956
Liu, Chen3 [Mon, 6 Jan 2020 01:33:28 +0000 (09:33 +0800)]
[NFC] Modify the format:
Drop the else since we alerady returned in the if.
Brian Gesiak [Sun, 5 Jan 2020 22:07:57 +0000 (17:07 -0500)]
[Coroutines] Remove corresponding phi values when apply simplifyTerminatorLeadingToRet
Summary:
In addMustTailToCoroResumes, we set musttail on those resume instructions that are followed by a ret instruction. This is done by simplifyTerminatorLeadingToRet which replace a sequence of branches leading to a ret with a clone of the ret.
However it forgets to remove corresponding PHI values that come from basic block of replaced branch, and may cause jumpthreading pass hangs (https://bugs.llvm.org/show_bug.cgi?id=43720)
This patch fix this issue
Test Plan:
cppcoro library with O3+flto
check-llvm
Reviewers: modocache, GorNishanov, lewissbaker
Reviewed By: modocache
Subscribers: mehdi_amini, EricWF, hiraditya, dexonsmith, jfb, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D71826
Patch by junparser (JunMa)!
Stephen Kelly [Sun, 5 Jan 2020 22:58:03 +0000 (22:58 +0000)]
Clang-format previous commit