Melanie Blower [Fri, 8 Nov 2019 18:14:51 +0000 (10:14 -0800)]
Reapply "Fix crash on switch conditions of non-integer types in templates"
This patch reapplies commit
76945821b9cad3. The first version broke
buildbots due to clang-tidy test fails. The fails are because some
errors in templates are now diagnosed earlier (does not wait till
instantiation). I have modified the tests to add checks for these
diagnostics/prevent these diagnostics. There are no additional code
changes.
Summary of code changes:
Clang currently crashes for switch statements inside a template when the
condition is a non-integer field member because contextual implicit
conversion is skipped when parsing the condition. This conversion is
however later checked in an assert when the case statement is handled.
The conversion is skipped when parsing the condition because
the field member is set as type-dependent based on its containing class.
This patch sets the type dependency based on the field's type instead.
This patch fixes Bug 40982.
Reviewers: rnk, gribozavr2
Patch by: Elizabeth Andrews (eandrews)
Differential revision: https://reviews.llvm.org/D69950
evgeny [Fri, 8 Nov 2019 17:50:34 +0000 (20:50 +0300)]
[ThinLTO] Fix bug when importing writeonly variables
Patch enables import of write-only variables with non-trivial initializers
to fix linker errors. Initializers of imported variables are converted to
'zeroinitializer' to avoid promotion of referenced objects.
Differential revision: https://reviews.llvm.org/D70006
Tom Stellard [Thu, 31 Oct 2019 20:39:48 +0000 (13:39 -0700)]
[cmake] Remove SVN support from VersionFromVCS.cmake
Reviewers: phosek
Subscribers: mgorny, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69682
Lei Huang [Fri, 8 Nov 2019 17:39:05 +0000 (11:39 -0600)]
[PowerPC][compiler-rt][builtins]Fix __fixunstfti builtin on PowerPC
__fixunstfti converts a long double (IBM double-double) to an unsigned 128 bit
integer. This patch enables it to handle a previously unhandled case in which
a negative low double may impact the result of the conversion.
Collaborated with @masoud.ataei and @renenkel.
Patch By: Baptiste Saleil
Differential Revision: https://reviews.llvm.org/D69193
Adrian Prantl [Fri, 8 Nov 2019 17:52:58 +0000 (09:52 -0800)]
Properly propagate is_variadic.
This fixes a copy&paste error made when adapting to new clang API
which was promptly caught by the bots.
Fangrui Song [Wed, 30 Oct 2019 23:45:21 +0000 (16:45 -0700)]
[ELF] Suggest extern "C" when the definition is mangled while an undefined reference is not
The definition may be mangled while an undefined reference is not.
This may come up when (1) the reference is from a C file or (2) the definition
misses an extern "C".
(2) is more common. Suggest an arbitrary mangled name that matches the
undefined reference, if such a definition exists.
ld.lld: error: undefined symbol: foo
>>> referenced by a.o:(.text+0x1)
>>> did you mean to declare foo(int) as extern "C"?
>>> defined in: a1.o
Reviewed By: dblaikie, ruiu
Differential Revision: https://reviews.llvm.org/D69650
Fangrui Song [Tue, 29 Oct 2019 22:28:19 +0000 (15:28 -0700)]
[ELF] Suggest extern "C" when an undefined reference is mangled while the definition is not
When missing an extern "C" declaration, an undefined reference may be
mangled while the definition is not. Suggest the missing
extern "C" and the base name.
Reviewed By: ruiu
Differential Revision: https://reviews.llvm.org/D69592
Kazu Hirata [Fri, 8 Nov 2019 17:29:46 +0000 (09:29 -0800)]
[JumpThreading] Fix a comment typo (NFC)
Reviewers: kazu
Subscribers: hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D70013
Nick Desaulniers [Fri, 8 Nov 2019 17:16:20 +0000 (09:16 -0800)]
remove redundant LLVM version from version string when setting CLANG_VENDOR
Summary:
When downstream LLVM distributions (like AOSP) set the CLANG_VENDOR
cmake variable, the version string printed by the clang driver looks
like:
$ clang --version
[CLANG_VENDOR] clang version X.X.X ([CLANG_REPOSITORY_STRING] sha) (based on LLVM X.X.X)
Rather than the more standard:
$ clang --version
clang version X.X.X ([CLANG_REPOSITORY_STRING] sha)
Based on feedback the the version string is a little long, the trailing
"(based on LLVM X.X.X)" is redundant and makes less sense after moving
LLVM to the monorepo. And it is only added should vendors set the cmake
variable CLANG_VENDOR. Let's remove it.
Reviewers: jyknight, eli.friedman, rsmith, rjmccall, efriedma
Reviewed By: efriedma
Subscribers: arphaman, efriedma, cfe-commits, srhines
Tags: #clang
Differential Revision: https://reviews.llvm.org/D69925
Nikita Popov [Fri, 8 Nov 2019 17:20:43 +0000 (18:20 +0100)]
Revert "[LVI] Normalize pointer behavior"
This reverts commit
15bc4dc9a8949f9cffd46ec647baf0818d28fb28.
clang-cmake-x86_64-sde-avx512-linux buildbot reported quite a few
compile-time regressions in test-suite, will investigate.
Jonas Devlieghere [Fri, 8 Nov 2019 17:19:54 +0000 (09:19 -0800)]
[lldb] Make Asan/SIP workaround work for Python 3
Make the check generic instead of hard-coding the path to Python 2. This
also fixes the print-syntax to be compatible with both versions.
Jonas Devlieghere [Fri, 8 Nov 2019 17:06:39 +0000 (09:06 -0800)]
[lldb] Prevent Asan/SIP workaround from affecting Python in /usr/local/bin
The code that works around SIP was unintentionally being triggered for
/usr/local/bin/python as well. That caused trouble on GreenDragon where
we were swapping out a Python 3 executable with the system's Python 2
executable.
Adrian Prantl [Fri, 8 Nov 2019 17:02:51 +0000 (09:02 -0800)]
Fix two typos in one test name, three days before its 10th birthday! (NFC)
Adrian Prantl [Fri, 8 Nov 2019 16:58:50 +0000 (08:58 -0800)]
Adapt LLDB to clang API change in ObjCMethodDecl::create().
Nikita Popov [Tue, 5 Nov 2019 22:14:22 +0000 (23:14 +0100)]
[LVI] Normalize pointer behavior
Related to D69686. As noted there, LVI currently behaves differently
for integer and pointer values: For integers, the block value is always
valid inside the basic block, while for pointers it is only valid at
the end of the basic block. I believe the integer behavior is the
correct one, and CVP relies on it via its getConstantRange() uses.
The reason for the special pointer behavior is that LVI checks whether
a pointer is dereferenced in a given basic block and marks it as
non-null in that case. Of course, this information is valid only after
the dereferencing instruction, or in conservative approximation,
at the end of the block.
This patch changes the treatment of dereferencability: Instead of
including it inside the block value, we instead treat it as something
similar to an assume (it essentially is a non-nullness assume) and
incorporate this information in intersectAssumeOrGuardBlockValueConstantRange()
if the context instruction is the terminator of the basic block.
This happens either when determining an edge-value internally in LVI,
or when a terminator was explicitly passed to getValueAt(). The latter
case makes this change not fully NFC, because we can now fold
terminator icmps based on the dereferencability information in the
same block. This is the reason why I changed one JumpThreading test
(it would optimize the condition away without the change).
Of course, we do not want to recompute dereferencability on each
intersectAssume call, so we need a new cache for this. The
dereferencability analysis requires walking the entire basic block
and computing underlying objects of all memory operands. This was
previously done separately for each queried pointer value. In the
new implementation (both because this makes the caching simpler,
and because it is faster), I instead only walk the full BB once and
cache all the dereferenced pointers. So the traversal is now performed
only once per BB, instead of once per queried pointer value.
I think the overall model now makes more sense than before, and there
will be no more pitfalls due to differing integer/pointer behavior.
Differential Revision: https://reviews.llvm.org/D69914
Simon Pilgrim [Fri, 8 Nov 2019 16:26:07 +0000 (16:26 +0000)]
PODSmallVector - fix uninitialized variable warnings. NFCI.
Simon Pilgrim [Fri, 8 Nov 2019 16:25:26 +0000 (16:25 +0000)]
TimeTraceProfiler - fix uninitialized variable warning. NFCI.
Simon Pilgrim [Fri, 8 Nov 2019 16:22:12 +0000 (16:22 +0000)]
Obj2YamlError - fix uninitialized variable warning. NFCI.
Simon Pilgrim [Fri, 8 Nov 2019 16:19:21 +0000 (16:19 +0000)]
CrashRecoveryContextCleanup - fix uninitialized variable warnings. NFCI.
Remove default values from constructor.
Adrian Prantl [Mon, 4 Nov 2019 22:28:14 +0000 (14:28 -0800)]
Redeclare Objective-C property accessors inside the ObjCImplDecl in which they are synthesized.
This patch is motivated by (and factored out from)
https://reviews.llvm.org/D66121 which is a debug info bugfix. Starting
with DWARF 5 all Objective-C methods are nested inside their
containing type, and that patch implements this for synthesized
Objective-C properties.
1. SemaObjCProperty populates a list of synthesized accessors that may
need to inserted into an ObjCImplDecl.
2. SemaDeclObjC::ActOnEnd inserts forward-declarations for all
accessors for which no override was provided into their
ObjCImplDecl. This patch does *not* synthesize AST function
*bodies*. Moving that code from the static analyzer into Sema may
be a good idea though.
3. Places that expect all methods to have bodies have been updated.
I did not update the static analyzer's inliner for synthesized
properties to point back to the property declaration (see
test/Analysis/Inputs/expected-plists/nullability-notes.m.plist), which
I believed to be more bug than a feature.
Differential Revision: https://reviews.llvm.org/D68108
rdar://problem/
53782400
Philip Reames [Fri, 8 Nov 2019 15:04:02 +0000 (07:04 -0800)]
[LICM] Support hosting of dynamic allocas out of loops
This patch implements a correct, but not terribly useful, transform. In particular, if we have a dynamic alloca in a loop which is guaranteed to execute, and provably not captured, we hoist the alloca out of the loop. The capture tracking is needed so that we can prove that each previous stack region dies before the next one is allocated. The transform decreases the amount of stack allocation needed by a linear factor (e.g. the iteration count of the loop).
Now, I really hope no one is actually using dynamic allocas. As such, why this patch?
Well, the actual problem I'm hoping to make progress on is allocation hoisting. There's a large draft patch out for review (https://reviews.llvm.org/D60056), and this patch was the smallest chunk of testable functionality I could come up with which takes a step vaguely in that direction.
Once this is in, it makes motivating the changes to capture tracking mentioned in TODOs testable. After that, I hope to extend this to trivial malloc free regions (i.e. free dominating all loop exits) and allocation functions for GCed languages.
Differential Revision: https://reviews.llvm.org/D69227
Philip Reames [Fri, 8 Nov 2019 15:00:55 +0000 (07:00 -0800)]
[LICM] Hoisting of widenable conditions out of loops
The change itself is straight forward and obvious, but ... there's an existing test checking for exactly the opposite. Both I and Artur think this is simply conservatism in the initial implementation. If anyone bisects a problem to this, a counter example will be very interesting.
Differential Revision: https://reviews.llvm.org/D69907
Tim Renouf [Fri, 8 Nov 2019 13:34:17 +0000 (13:34 +0000)]
[CostModel] Fixed isExtractSubvectorMask for undef index off end
ShuffleVectorInst::isExtractSubvectorMask, introduced in
[CostModel] Add SK_ExtractSubvector handling to getInstructionThroughput (PR39368)
erroneously thought that
%340 = shufflevector <4 x float> %339, <4 x float> undef, <3 x i32> <i32 2, i32 3, i32 undef>
is a subvector extract, even though it goes off the end of the parent
vector with the undef index. That then caused an assert in
BasicTTIImplBase::getExtractSubvectorOverhead.
This commit fixes that, by not considering the above a subvector
extract.
Differential Revision: https://reviews.llvm.org/D70005
Change-Id: I87b8b00b24bef19ffc9a1b82ef4eca3b8a246eaf
Yi-Hong Lyu [Thu, 12 Sep 2019 06:49:02 +0000 (06:49 +0000)]
[PowerPC] Remove redundant CRSET/CRUNSET in custom lowering of known CR bit spills
We lower known CR bit spills (CRSET/CRUNSET) to load and spill the known value
but forgot to remove the redundant spills.
e.g., This sequence was used to spill a CRUNSET:
crclr 4*cr5+lt
mfocrf r3,4
rlwinm r3,r3,20,0,0
stw r3,132(r1)
Custom lowering of known CR bit spills lower it to:
crxor 4*cr5+lt, 4*cr5+lt, 4*cr5+lt
li r3,0
stw r3,132(r1)
crxor is redundant if there is no use of 4*cr5+lt so we should remove it
Differential revision: https://reviews.llvm.org/D67722
Simon Pilgrim [Fri, 8 Nov 2019 15:06:33 +0000 (15:06 +0000)]
raw_ostream - fix static analyzer warnings. NFCI.
- uninitialized variables
- make BufferKind a scoped enum class
Simon Pilgrim [Fri, 8 Nov 2019 15:04:49 +0000 (15:04 +0000)]
YAMLTraits.h - fix uninitialized variable warning. NFCI.
Jan Vesely [Thu, 7 Nov 2019 21:27:04 +0000 (16:27 -0500)]
libclc: Drop the old python based build system
Reviewer: tstellar
Differential Revision: https://reviews.llvm.org/D69966
Jan Vesely [Sat, 2 Nov 2019 22:15:56 +0000 (18:15 -0400)]
libclc: Drop travis
It only works for standalone repos.
Reviewer: tstellar
Differential Revision: https://reviews.llvm.org/D69965
Raphael Isemann [Fri, 8 Nov 2019 14:39:42 +0000 (15:39 +0100)]
[lldb] Skip parts of TestCallOverriddenMethod.py on Linux
The function call and the constructor call fail now several Linux
bots (Swift CI, my own bot and Stella's Debian system), so let's disable
the relevant test parts until we can figure out why it is failing.
Roman Lebedev [Fri, 8 Nov 2019 14:27:42 +0000 (17:27 +0300)]
[NFC] ConstantRange::subWithNoWrap(): fixup comment
Roman Lebedev [Fri, 8 Nov 2019 14:19:56 +0000 (17:19 +0300)]
[ConstantRange] Add umul_sat()/smul_sat() methods
Summary:
To be used in `ConstantRange::mulWithNoOverflow()`,
may in future be useful for when saturating shift/mul ops are added.
These are precise as far as i can tell.
I initially though i will need `APInt::[us]mul_sat()` for these,
but it turned out much simpler to do what `ConstantRange::multiply()`
does - perform multiplication in twice the bitwidth, and then truncate.
Though here we want saturating signed truncation.
Reviewers: nikic, reames, spatel
Reviewed By: nikic
Subscribers: hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69994
Roman Lebedev [Fri, 8 Nov 2019 14:19:45 +0000 (17:19 +0300)]
[APInt] Add saturating truncation methods
Summary:
The signed one is needed for implementation of `ConstantRange::smul_sat()`,
unsigned is for completeness only.
Reviewers: nikic, RKSimon, spatel
Reviewed By: nikic
Subscribers: hiraditya, dexonsmith, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69993
Kristof Beyls [Fri, 8 Nov 2019 11:07:53 +0000 (11:07 +0000)]
find_interesting_reviews.py: avoid crash on non-ascii data.
Simon Pilgrim [Fri, 8 Nov 2019 14:27:51 +0000 (14:27 +0000)]
OutputStream - fix static analyzer warnings. NFCI.
- uninitialized variables
- make getBufferCapacity() const
Simon Pilgrim [Fri, 8 Nov 2019 14:25:56 +0000 (14:25 +0000)]
directory_entry - fix uninitialized variable warning. NFCI.
Simon Pilgrim [Fri, 8 Nov 2019 14:21:34 +0000 (14:21 +0000)]
Timer - fix uninitialized variable warnings. NFCI.
Simon Pilgrim [Fri, 8 Nov 2019 14:19:23 +0000 (14:19 +0000)]
ReplacementItem - fix uninitialized variable warning. NFCI.
Simon Pilgrim [Fri, 8 Nov 2019 14:17:46 +0000 (14:17 +0000)]
Hashing - fix uninitialized variable warnings. NFCI.
paul_hoad [Fri, 8 Nov 2019 14:34:07 +0000 (14:34 +0000)]
[clang-format] Ensure dump_format_style.py can generate ClangFormatStyleOptions.rst without manual intervention
Summary:
This revision is the last in a series of revisions to return `clang/doc/tools/dump_format_style.py` to be being able to parse Format.h without needing to manually merge the ClangFormatStyleOptions.rst file.
The final modification to dump_format_style.py is needed following the addition of a nested enumeration inside a nested structure following the introduction of {D68296}
Prior related revisions will allow for a fully clang-formatted `clang/include/clang/Format/Format.h` to once again be used at the source.
{D69951}
{D69433}
{D69404}
Reviewers: mitchell-stellar, klimek, sammccall, owenpan
Reviewed By: mitchell-stellar
Subscribers: cfe-commits
Tags: #clang-format, #clang
Differential Revision: https://reviews.llvm.org/D70003
Aditya Kumar [Fri, 8 Nov 2019 05:20:34 +0000 (21:20 -0800)]
[llvm-xray] Add AArch64 to llvm-xray extract
This required adding support for resolving R_AARCH64_ABS64 relocations to
get accurate addresses for function names to resolve.
Authored by: ianlevesque (Ian Levesque)
Reviewers: dberris, phosek, smeenai, tetsuo-cpp
Differential Revision: https://reviews.llvm.org/D69967
LLVM GN Syncbot [Fri, 8 Nov 2019 14:31:11 +0000 (14:31 +0000)]
gn build: Merge
0dc0572b48e
Jason Liu [Fri, 8 Nov 2019 14:26:28 +0000 (09:26 -0500)]
[XCOFF][AIX] Differentiate usage of label symbol and csect symbol
Summary:
We are using symbols to represent label and csect interchangeably before, and that could be a problem.
There are cases we would need to add storage mapping class to the symbol if that symbol is actually the name of a csect, but it's hard for us to figure out whether that symbol is a label or csect.
This patch intend to do the following:
1. Construct a QualName (A name include the storage mapping class)
MCSymbolXCOFF for every MCSectionXCOFF.
2. Keep a pointer to that QualName inside of MCSectionXCOFF.
3. Use that QualName whenever we need a symbol refers to that
MCSectionXCOFF.
4. Adapt the snowball effect from the above changes in
XCOFFObjectWriter.cpp.
Reviewers: xingxue, DiggerLin, sfertile, daltenty, hubert.reinterpretcast
Reviewed By: DiggerLin, daltenty
Subscribers: wuzish, nemanjai, mgorny, hiraditya, kbarton, jsji, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69633
Dmitry Preobrazhensky [Fri, 8 Nov 2019 13:38:56 +0000 (16:38 +0300)]
[AMDGPU][MC] Corrected src0 for v_movrelsd_b32 and v_movrelsd_2_b32
See https://bugs.llvm.org/show_bug.cgi?id=40903
Reviewers: arsenm, rampitec
Differential Revision: https://reviews.llvm.org/D69888
Gil Rapaport [Mon, 7 Oct 2019 14:24:33 +0000 (17:24 +0300)]
[LV] Apply sink-after & interleave-groups as VPlan transformations (NFCI)
This recommits
100e797adb433724a17c9b42b6533cd634cb796b (reverted in
009e032634b3bd7fc32071ac2344b12142286477 for failing an assert). While the
root cause was independently reverted in
eaff3004019f97c64c88ab76da6b25106b659b30,
this commit includes a LIT to make sure IVDescriptor's SinkAfter logic does not
try to sink branch instructions.
Simon Pilgrim [Fri, 8 Nov 2019 13:10:52 +0000 (13:10 +0000)]
BinaryStream - fix static analyzer warnings. NFCI.
- uninitialized variables
- documention warnings
- shadow variable names
paulhoad [Fri, 8 Nov 2019 13:15:45 +0000 (13:15 +0000)]
[clang-format] update comments in clang-format.py for python3 compatibility
Summary:
D23319 introduced python3 compatibility to clang-format.py, this is however not reflected by the documentation in the comments at the beginning of the file, which show how to use the script with python2 in .vimrc. While the actual mapping a user might want to use may well differ from my suggestion, I think it's nice to show the python2 and python3 version, such that a user can pick from the suggestions instead of googeling the python3 replacement for `:pyf` which they might not be familiar with.
EDIT: picking reviewers according to https://llvm.org/docs/Phabricator.html#finding-potential-reviewers
Reviewers: klimek, MyDeveloperDay
Reviewed By: MyDeveloperDay
Subscribers: ilya-biryukov, cfe-commits, llvm-commits, ychen
Patch By: pseyfert
Tags: #clang-tools-extra, #llvm, #clang
Differential Revision: https://reviews.llvm.org/D38446
Abel Kocsis [Fri, 8 Nov 2019 13:09:09 +0000 (14:09 +0100)]
Revert "test commit"
This reverts commit
b0a03f29d9a2d316d6be99e6a4825114f240c0b2.
Abel Kocsis [Fri, 8 Nov 2019 13:08:46 +0000 (14:08 +0100)]
Revert "test commit"
This reverts commit
3ffce13f8c7ecb21c5729aa358f1f9fc008bbea2.
Abel Kocsis [Fri, 8 Nov 2019 13:08:15 +0000 (14:08 +0100)]
Revert "Revert "Revert "[clang] Report sanitizer blacklist as a dependency in cc1"""
This reverts commit
3182027282c59c51d5080d83365917fccd695854.
Abel Kocsis [Fri, 8 Nov 2019 13:00:44 +0000 (14:00 +0100)]
Revert "Revert "[clang] Report sanitizer blacklist as a dependency in cc1""
This reverts commit
6b45e1bc11e91ea7b57a6ab1c19461a86dba33f8.
Abel Kocsis [Fri, 8 Nov 2019 12:37:24 +0000 (13:37 +0100)]
test commit
Abel Kocsis [Fri, 8 Nov 2019 12:35:49 +0000 (13:35 +0100)]
test commit
Jeremy Morse [Fri, 8 Nov 2019 11:33:40 +0000 (11:33 +0000)]
Revert "[clang] Report sanitizer blacklist as a dependency in cc1"
This reverts commit
03b84e4f6d0e1c04f22d69cc445f36e1f713beb4.
This breaks dfsan tests with a linking failure, in for example this build:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/24312
Reverting this patch locally makes those tests succeed.
Jeremy Morse [Fri, 8 Nov 2019 11:33:11 +0000 (11:33 +0000)]
Revert "[compiler-rt] Fix tests after
03b84e4f6d0"
This reverts commit
bdeb2724f0aa9c518f94d998d24d8620a1e88727.
(Reverting
03b84e4f6d0, so this must come out as well)
Djordje Todorovic [Fri, 8 Nov 2019 10:19:58 +0000 (11:19 +0100)]
Reland: [TII] Use optional destination and source pair as a return value; NFC
Refactor usage of isCopyInstrImpl, isCopyInstr and isAddImmediate methods
to return optional machine operand pair of destination and source
registers.
Patch by Nikola Prica
Differential Revision: https://reviews.llvm.org/D69622
Raphael Isemann [Fri, 8 Nov 2019 11:28:49 +0000 (12:28 +0100)]
[lldb] Make Target* a Target& in CommandObjectExpression::DoExecute REPL logic
Subscribers: JDevlieghere, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D70002
Raphael Isemann [Fri, 8 Nov 2019 11:03:28 +0000 (12:03 +0100)]
[lldb][NFC] Refactor some IsClangType checks in ClangASTContext
Summary:
All type in these functions need be valid and Clang types, so
we might as well replace these checks with IsClangType.
Also lets IsClangType explicitly check for validity instead of
assuming that the TypeSystem is a nullptr.
Subscribers: abidh, JDevlieghere, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D70001
Russell Gallop [Fri, 8 Nov 2019 10:46:24 +0000 (10:46 +0000)]
[cmake] Enable thin lto cache when building with lld-link
This was enabled for other platforms. Added option for Windows/lld-link.
Differential Revision: https://reviews.llvm.org/D69941
Hans Wennborg [Fri, 8 Nov 2019 10:30:33 +0000 (11:30 +0100)]
Revert d91ed80 "[codeview] Reference types in type parent scopes"
This triggered asserts in the Chromium build, see https://crbug.com/1022729 for
details and reproducer.
> Without this change, when a nested tag type of any kind (enum, class,
> struct, union) is used as a variable type, it is emitted without
> emitting the parent type. In CodeView, parent types point to their inner
> types, and inner types do not point back to their parents. We already
> walk over all of the parent scopes to build the fully qualified name.
> This change simply requests their type indices as we go along to enusre
> they are all emitted.
>
> Fixes PR43905
>
> Reviewers: akhuang, amccarth
>
> Differential Revision: https://reviews.llvm.org/D69924
Sanne Wouda [Fri, 8 Nov 2019 09:25:57 +0000 (09:25 +0000)]
[RAGreedy] Enable -consider-local-interval-cost for AArch64
Summary:
The greedy register allocator occasionally decides to insert a large number of
unnecessary copies, see below for an example. The -consider-local-interval-cost
option (which X86 already enables by default) fixes this. We enable this option
for AArch64 only after receiving feedback that this change is not beneficial for
PowerPC.
We evaluated the impact of this change on compile time, code size and
performance benchmarks.
This option has a small impact on compile time, measured on CTMark. A 0.1%
geomean regression on -O1 and -O2, and 0.2% geomean for -O3, with at most 0.5%
on individual benchmarks.
The effect on both code size and performance on AArch64 for the LLVM test suite
is nil on the geomean with individual outliers (ignoring short exec_times)
between:
best worst
size..text -3.3% +0.0%
exec_time -5.8% +2.3%
On SPEC CPU® 2017 (compiled for AArch64) there is a minor reduction (-0.2% at
most) in code size on some benchmarks, with a tiny movement (-0.01%) on the
geomean. Neither intrate nor fprate show any change in performance.
This patch makes the following changes.
- For the AArch64 target, enableAdvancedRASplitCost() now returns true.
- Ensures that -consider-local-interval-cost=false can disable the new
behaviour if necessary.
This matrix multiply example:
$ cat test.c
long A[8][8];
long B[8][8];
long C[8][8];
void run_test() {
for (int k = 0; k < 8; k++) {
for (int i = 0; i < 8; i++) {
for (int j = 0; j < 8; j++) {
C[i][j] += A[i][k] * B[k][j];
}
}
}
}
results in the following generated code on AArch64:
$ clang --target=aarch64-arm-none-eabi -O3 -S test.c -o -
[...]
// %for.cond1.preheader
// =>This Inner Loop Header: Depth=1
add x14, x11, x9
str q0, [sp, #16] // 16-byte Folded Spill
ldr q0, [x14]
mov v2.16b, v15.16b
mov v15.16b, v14.16b
mov v14.16b, v13.16b
mov v13.16b, v12.16b
mov v12.16b, v11.16b
mov v11.16b, v10.16b
mov v10.16b, v9.16b
mov v9.16b, v8.16b
mov v8.16b, v31.16b
mov v31.16b, v30.16b
mov v30.16b, v29.16b
mov v29.16b, v28.16b
mov v28.16b, v27.16b
mov v27.16b, v26.16b
mov v26.16b, v25.16b
mov v25.16b, v24.16b
mov v24.16b, v23.16b
mov v23.16b, v22.16b
mov v22.16b, v21.16b
mov v21.16b, v20.16b
mov v20.16b, v19.16b
mov v19.16b, v18.16b
mov v18.16b, v17.16b
mov v17.16b, v16.16b
mov v16.16b, v7.16b
mov v7.16b, v6.16b
mov v6.16b, v5.16b
mov v5.16b, v4.16b
mov v4.16b, v3.16b
mov v3.16b, v1.16b
mov x12, v0.d[1]
fmov x15, d0
ldp q1, q0, [x14, #16]
ldur x1, [x10, #-256]
ldur x2, [x10, #-192]
add x9, x9, #64 // =64
mov x13, v1.d[1]
fmov x16, d1
ldr q1, [x14, #48]
mul x3, x15, x1
mov x14, v0.d[1]
fmov x17, d0
mov x18, v1.d[1]
fmov x0, d1
mov v1.16b, v3.16b
mov v3.16b, v4.16b
mov v4.16b, v5.16b
mov v5.16b, v6.16b
mov v6.16b, v7.16b
mov v7.16b, v16.16b
mov v16.16b, v17.16b
mov v17.16b, v18.16b
mov v18.16b, v19.16b
mov v19.16b, v20.16b
mov v20.16b, v21.16b
mov v21.16b, v22.16b
mov v22.16b, v23.16b
mov v23.16b, v24.16b
mov v24.16b, v25.16b
mov v25.16b, v26.16b
mov v26.16b, v27.16b
mov v27.16b, v28.16b
mov v28.16b, v29.16b
mov v29.16b, v30.16b
mov v30.16b, v31.16b
mov v31.16b, v8.16b
mov v8.16b, v9.16b
mov v9.16b, v10.16b
mov v10.16b, v11.16b
mov v11.16b, v12.16b
mov v12.16b, v13.16b
mov v13.16b, v14.16b
mov v14.16b, v15.16b
mov v15.16b, v2.16b
ldr q2, [sp] // 16-byte Folded Reload
fmov d0, x3
mul x3, x12, x1
[...]
With -consider-local-interval-cost the same section of code results in the
following:
$ clang --target=aarch64-arm-none-eabi -mllvm -consider-local-interval-cost -O3 -S test.c -o -
[...]
.LBB0_1: // %for.cond1.preheader
// =>This Inner Loop Header: Depth=1
add x14, x11, x9
ldp q0, q1, [x14]
ldur x1, [x10, #-256]
ldur x2, [x10, #-192]
add x9, x9, #64 // =64
mov x12, v0.d[1]
fmov x15, d0
mov x13, v1.d[1]
fmov x16, d1
ldp q0, q1, [x14, #32]
mul x3, x15, x1
cmp x9, #512 // =512
mov x14, v0.d[1]
fmov x17, d0
fmov d0, x3
mul x3, x12, x1
[...]
Reviewers: SjoerdMeijer, samparker, dmgreen, qcolombet
Reviewed By: dmgreen
Subscribers: ZhangKang, jsji, wuzish, ppc-slack, lkail, steven.zhang, MatzeB, qcolombet, kristof.beyls, hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69437
Rui Ueyama [Fri, 8 Nov 2019 05:39:14 +0000 (14:39 +0900)]
Keep symbols passed by -init and -fini
Previously, symbols passed by -init and -fini look as if they are
not referenced by anyone, and the LTO might eliminate them.
This patch fixes the issue.
Fixes a bug reported in https://bugs.llvm.org/show_bug.cgi?id=43927
Differential Revision: https://reviews.llvm.org/D69985
Roger Ferrer Ibanez [Fri, 8 Nov 2019 08:26:30 +0000 (08:26 +0000)]
[RISCV] Fix evaluation of %pcrel_lo
The following testcase
function:
.Lpcrel_label1:
auipc a0, %pcrel_hi(other_function)
addi a1, a0, %pcrel_lo(.Lpcrel_label1)
.p2align 2 # Causes a new fragment to be emitted
.type other_function,@function
other_function:
ret
exposes an odd behaviour in which only the %pcrel_hi relocation is
evaluated but not the %pcrel_lo.
$ llvm-mc -triple riscv64 -filetype obj t.s | llvm-objdump -d -r -
<stdin>: file format ELF64-riscv
Disassembly of section .text:
0000000000000000 function:
0: 17 05 00 00 auipc a0, 0
4: 93 05 05 00 mv a1, a0
0000000000000004: R_RISCV_PCREL_LO12_I other_function+4
0000000000000008 other_function:
8: 67 80 00 00 ret
The reason seems to be that in RISCVAsmBackend::shouldForceRelocation we
only consider the fragment but in RISCVMCExpr::evaluatePCRelLo we
consider the section. This usually works but there are cases where the
section may still be the same but the fragment may be another one. In
that case we end forcing a %pcrel_lo relocation without any %pcrel_hi.
This patch makes RISCVAsmBackend::shouldForceRelocation use the section,
if any, to determine if the relocation must be forced or not.
Differential Revision: https://reviews.llvm.org/D60657
Adam Balogh [Fri, 8 Nov 2019 07:56:31 +0000 (08:56 +0100)]
[Analyzer] Checker for Debugging Iterator Checkers
For white-box testing correct container and iterator modelling it is essential
to access the internal data structures stored for container and iterators. This
patch introduces a simple debug checkers called debug.IteratorDebugging to
achieve this.
Differential Revision: https://reviews.llvm.org/D67156
Daniil Suchkov [Fri, 8 Nov 2019 07:51:36 +0000 (14:51 +0700)]
[NFC][IndVarS] Adjust a comment
(test commit)
Roman Lebedev [Fri, 8 Nov 2019 07:32:56 +0000 (10:32 +0300)]
[CR] ConstantRange::sshl_sat(): check sigdness of the min/max, not ranges
This was pointed out in review,
but forgot to stage this change into the commit itself..
Roman Lebedev [Fri, 8 Nov 2019 07:24:46 +0000 (10:24 +0300)]
[ConstantRange] Add `ushl_sat()`/`sshl_sat()` methods.
Summary:
To be used in `ConstantRange::shlWithNoOverflow()`,
may in future be useful for when saturating shift/mul ops are added.
Unlike `ConstantRange::shl()`, these are precise.
Reviewers: nikic, spatel, reames
Reviewed By: nikic
Subscribers: hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69960
Yonghong Song [Thu, 7 Nov 2019 18:55:59 +0000 (10:55 -0800)]
[BPF] turn on -mattr=+alu32 for cpu version v3 and later
-mattr=+alu32 has shown good performance vs. without this attribute.
Based on discussion at
https://lore.kernel.org/bpf/
1ec37838-966f-ec0b-5223-
ca9b6eb0860d@fb.com/T/#t
cpu version v3 should support -mattr=+alu32.
This patch enabled alu32 if cpu version is v3, either specified by user
or probed by the llvm.
Differential Revision: https://reviews.llvm.org/D69957
Jason Molenda [Fri, 8 Nov 2019 03:34:09 +0000 (19:34 -0800)]
Reordering KextImageInfo::LoadImageUsingMemoryModule
so we only call ModulesDidLoad at the end of the method
after the new module has been added to the target and
the sections have all been adjusted to their actual
load addresses. Solves a problem where an operating
system plugin in the kernel could be loaded multiple
times; the first before the binary had even been
added to the target.
<rdar://problem/
50523558>
Nemanja Ivanovic [Fri, 8 Nov 2019 02:58:11 +0000 (20:58 -0600)]
[PowerPC][Altivec] Fix offsets for vec_xl and vec_xst
As we currently have it implemented in altivec.h, the offsets for these two
intrinsics are element offsets. The documentation in the ABI (as well as the
implementation in both XL and GCC) states that these should be byte offsets.
Differential revision: https://reviews.llvm.org/D63636
Nemanja Ivanovic [Fri, 8 Nov 2019 02:40:32 +0000 (20:40 -0600)]
[PowerPC][Altivec] Emit correct builtin for single precision vec_all_ne
We currently emit a double precision comparison instruction for this, whereas we
need to emit the single precision version.
Differential revision: https://reviews.llvm.org/D64024
Nemanja Ivanovic [Fri, 8 Nov 2019 01:31:00 +0000 (19:31 -0600)]
[PowerPC] Option for enabling absolute jumptables with command line
This option allows the user to specify the use of absolute jumptables instead
of relative which is the default on most PPC subtargets.
Patch by Kamauu Bridgeman
Differential revision: https://reviews.llvm.org/D69108
Artem Belevich [Fri, 8 Nov 2019 01:16:12 +0000 (17:16 -0800)]
[creduce] Fixed a typo in the error message we're looking for.
Artem Dergachev [Fri, 8 Nov 2019 00:17:39 +0000 (16:17 -0800)]
[analyzer] Add test cases for the unsupported C++ constructor modeling.
Namely, for the following items:
- Handle constructors within new[];
- Handle constructors for default arguments.
Update the open projects page with a link to the newly added tests
and more hints for potential contributors.
Patch by Daniel Krupp!
Differential Revision: https://reviews.llvm.org/D69308
Artem Dergachev [Thu, 7 Nov 2019 23:58:01 +0000 (15:58 -0800)]
[analyzer] PR41729: CStringChecker: Improve strlcat and strlcpy modeling.
- Fix false positive reports of strlcat.
- The return value of strlcat and strlcpy is now correctly calculated.
- The resulting string length of strlcat and strlcpy is now correctly
calculated.
Patch by Daniel Krupp!
Differential Revision: https://reviews.llvm.org/D66049
Shu-Chun Weng [Thu, 7 Nov 2019 23:47:41 +0000 (15:47 -0800)]
[llvm/test] Update test comments
Fangrui Song [Fri, 8 Nov 2019 00:02:32 +0000 (16:02 -0800)]
[MC] Delete defaulted constructor llvm::AsmCond::AsmCond
Craig Topper [Thu, 7 Nov 2019 22:59:14 +0000 (14:59 -0800)]
[InstCombine] Don't transform bitcasts between x86_mmx and v1i64 into insertelement/extractelement
x86_mmx is conceptually a vector already. Don't introduce an extra conversion between it and scalar i64.
I'm using VectorType::isValidElementType which checks for floating point, integer, and pointers to hopefully make this more readable than just blacklisting x86_mmx.
Differential Revision: https://reviews.llvm.org/D69964
Sanjay Patel [Thu, 7 Nov 2019 23:06:26 +0000 (18:06 -0500)]
[InstCombine] auto-generate complete checks; NFC
Fred Riss [Thu, 7 Nov 2019 22:03:07 +0000 (14:03 -0800)]
Modernize TestWeakSymbols Makefile
Reid Kleckner [Thu, 7 Nov 2019 22:13:26 +0000 (14:13 -0800)]
[SEH] Defer checking filter expression types until instantiaton
While here, wordsmith the error a bit. Now clang says:
error: filter expression has non-integral type 'Foo'
Fixes PR43779
Reviewers: amccarth
Differential Revision: https://reviews.llvm.org/D69969
Sterling Augustine [Thu, 31 Oct 2019 19:45:20 +0000 (12:45 -0700)]
Correctly update isSignalFrame when unwinding the stack via dwarf.
A "signal frame" is a function or block of code where execution arrives via a signal or interrupt, rather than via a normal call instruction. In fact, a particular instruction is interrupted by the signal and needs to be restarted. Therefore, when the signal handler is complete, execution needs to return to the interrupted instruction, rather than the instruction immediately following the call instruction, as in a normal call.
Stack unwinders need to know this to correctly unwind signal frames. Dwarf handily provides an "S" in the CIE augmentation string to describe this case, and the libunwind API provides various functions to for unwinders to determine it,.
The llvm libunwind implementation correctly sets it's internal variable "isSignalFrame" when initializing an unwind context. However, upon stepping up the stack, the current implementation correctly reads the augmentation string and sets it in the CIE info (which it then discards), libunwind doesn't update it's internal unwind context data structure.
This change fixes that, and provides compatibility with both the canonical libunwind and the libgcc implementation.
Reviewers: jfb
Subscribers: christof, libcxx-commits
Tags: #libc
Differential Revision: https://reviews.llvm.org/D69677
LLVM GN Syncbot [Thu, 7 Nov 2019 22:43:50 +0000 (22:43 +0000)]
gn build: Merge
25ee861372f
Daniel Sanders [Thu, 7 Nov 2019 00:08:01 +0000 (16:08 -0800)]
[debugify] Move the Debugify pass from tools/opt to lib/Transform/Utils
Summary:
I need to make use of this pass from a driver program that isn't opt.
Therefore this patch moves this pass into the LLVM library so that it is
available for use elsewhere.
There was one function I kept in tools/opt which is exportDebugifyStats()
this is because it's serializing the statistics into a human readable
format and this seemed more in keeping with opt than a library function
Reviewers: vsk, aprantl
Subscribers: mgorny, hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69926
Jan Korous [Thu, 7 Nov 2019 22:40:22 +0000 (14:40 -0800)]
[compiler-rt] Fix tests after
03b84e4f6d0
Fallout from:
[clang] Report sanitizer blacklist as a dependency in cc1
Default blacklists are now passed via -fsanitize-system-blacklist from driver to cc1.
Jim Ingham [Thu, 7 Nov 2019 20:44:03 +0000 (12:44 -0800)]
BreakpointDummyOptionGroup was using g_breakpoint_modify_options rather than g_breakpoint_dummy_options
causing the -D option for breakpoint set command to be incorrectly parsed.
Patch by Martin Svensson.
Differential Revision: https://reviews.llvm.org/D69425
Jan Korous [Thu, 7 Nov 2019 21:56:14 +0000 (13:56 -0800)]
[clang] Report sanitizer blacklist as a dependency in cc1
Previously these were reported from the driver which blocked clang-scan-deps from getting the full set of dependencies from cc1 commands.
Also the default sanitizer blacklist that is added in driver was never reported as a dependency. I introduced -fsanitize-system-blacklist cc1 option to keep track of which blacklists were user-specified and which were added by driver and clang -MD now also reports system blacklists as dependencies.
Differential Revision: https://reviews.llvm.org/D69290
Galina Kistanova [Thu, 7 Nov 2019 22:02:13 +0000 (14:02 -0800)]
Revert "[MachineVerifier] Improve verification of live-in lists.
This reverts commit b7b170c to give the author more time to address failing tests on the expensive checks buildbots.
Reid Kleckner [Wed, 6 Nov 2019 23:04:52 +0000 (15:04 -0800)]
[codeview] Reference types in type parent scopes
Without this change, when a nested tag type of any kind (enum, class,
struct, union) is used as a variable type, it is emitted without
emitting the parent type. In CodeView, parent types point to their inner
types, and inner types do not point back to their parents. We already
walk over all of the parent scopes to build the fully qualified name.
This change simply requests their type indices as we go along to enusre
they are all emitted.
Fixes PR43905
Reviewers: akhuang, amccarth
Differential Revision: https://reviews.llvm.org/D69924
Dávid Bolvanský [Thu, 7 Nov 2019 19:47:09 +0000 (20:47 +0100)]
[Diagnostics] Teach -Wnull-dereference about address_space attribute
Summary:
Clang should not warn for:
> test.c:2:12: warning: indirection of non-volatile null pointer will be deleted,
> not trap [-Wnull-dereference]
> return *(int __attribute__((address_space(256))) *) 0;
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Solves PR42292.
Reviewers: aaron.ballman, rsmith
Reviewed By: aaron.ballman
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D69664
Vedant Kumar [Thu, 7 Nov 2019 20:46:26 +0000 (12:46 -0800)]
[CodeGenModule] Group blocks runtime globals together, NFC
Jonas Devlieghere [Thu, 7 Nov 2019 19:13:47 +0000 (11:13 -0800)]
[lldb] Improve assert in GDBRemoteCommunicationReplayServer
While investigating an issue where a different packet was sent during
replay I noticed how annoying it is that the existing assert doesn't
specify what packet is actually different. It's printed to the log, but
enabling logging has the potential to change LLDB's behavior. The same
is true when debugging LLDB while it's replaying the reproducer.
I replaced the assert with a printf of the unexpected packet followed by
a fatal_error wrapped in ifndef NDEBUG. The behavior is the same as the
previous assert, just with more/better context.
Craig Topper [Thu, 7 Nov 2019 20:37:24 +0000 (12:37 -0800)]
[InstCombine] Add test cases to show bad canonicalization of bitcasts between x86_mmx and <1 x i64>.
As the test cases show, we end up with an insert/extract and a
bitcast to/from i64. x86_mmx is for some purposes conceptually a
vector. We shouldn't be adding scalar conversions around it.
Since _m64 is defined as <1 x i64> and intrinsics use x86_mmx
as their input/output these extra scalar operations prevent
the X86 backend from generating good code especially on 32-bit
targets where i64 gets split.
Mark de Wever [Thu, 7 Nov 2019 20:22:03 +0000 (21:22 +0100)]
[Sema] Fixes a crash with a templated destructor
The issue was introduced by D33189 which fixed PR33189.
Fixes PR38671: "destructor cannot be declared as a template" leads to segfault in Sema::LookupSpecialMember
Differential Revision: https://reviews.llvm.org/D69225
David Blaikie [Thu, 7 Nov 2019 20:00:22 +0000 (12:00 -0800)]
[clang] Add -fdebug-default-version for specifying the default DWARF version
This flag decouples specifying the DWARF version from enabling/disabling
DWARF in general (or the gN level - gmlt/limited/standalone, etc) while
still allowing existing -gdwarf-N flags to override this default.
Patch by Caroline Tice!
Differential Revision: https://reviews.llvm.org/D69822
Vedant Kumar [Thu, 7 Nov 2019 19:19:41 +0000 (11:19 -0800)]
Wrong debug info generated at -O2 (-O0 is correct)
Instcombiner pass was erasing trivially dead instruction without updating dependent llvm.dbg.value.
which was not showing programmer current state of variables while debugging.
As a part of this fix I did following,
Iterate throught all the users (llvm.dbg) of a instruction which is trivially dead and set each if them undef, Before deleting the instruction.
Now user will see optimized out, when try to print those variables.
This fixes
https://bugs.llvm.org/show_bug.cgi?id=43893
This is my first fix to llvm.
Patch by kamlesh kumar!
Differential Revision: https://reviews.llvm.org/D69809
Adrian Prantl [Thu, 7 Nov 2019 18:50:37 +0000 (10:50 -0800)]
crashlog.py: Improve regular expressions
This is yet another change to the regular expressions in crashlog.py
that fix a few edge cases, and attempt to improve the readability
quite a bit in the process. My last change to support spaces in
filenames introduced a bug that caused the version/archspec field to
be parsed as part of the image name.
For example, in "0x1111111 - 0x22222 +MyApp Pro arm64 <01234>", the
name of the image was recognized as "MyApp Pro arm64" instead of
"MyApp Pro" with a "version" of arm64.
The bugfix makes the space following an optional field mandatory
*inside* the optional group.
rdar://problem/
56883435
Differential Revision: https://reviews.llvm.org/D69871
Edward Jones [Thu, 7 Nov 2019 18:19:09 +0000 (18:19 +0000)]
Revert "[Sema] Suppress -Wchar-subscripts if the index is a literal char"
This reverts commit
7adab7719e55e1b29bfd521dcc73f202139e8f41.
Simon Pilgrim [Thu, 7 Nov 2019 18:41:49 +0000 (18:41 +0000)]
FDRRecords - fix uninitialized variable warnings. NFCI.
Simon Pilgrim [Thu, 7 Nov 2019 18:41:01 +0000 (18:41 +0000)]
ImutAVLTree::validateTree - fix null dereference typo warning. NFCI.
Noticed by static analyzer.
Simon Pilgrim [Thu, 7 Nov 2019 18:00:43 +0000 (18:00 +0000)]
canFoldMergeOpcode returns a bool result not an unsigned. NFCI.