Raphael Isemann [Fri, 24 Aug 2018 20:55:23 +0000 (20:55 +0000)]
Fixed windows bots that were failing because of PATH_MAX
As we only use PATH_MAX for an assert in a unit test that is supposed
to catch the random failures on the Swift CI bots, we might as well
just ifdef this assert out on Windows.
llvm-svn: 340652
Eli Friedman [Fri, 24 Aug 2018 20:42:32 +0000 (20:42 +0000)]
[SafeStack] Set debug location for calls to __safestack_pointer_address.
Otherwise, the debug info is incorrect. On its own, this is mostly
harmless, but the safe-stack also later inlines the call to
__safestack_pointer_address, which leads to debug info with the wrong
scope, which eventually causes an assertion failure (and incorrect debug
info in release mode).
Differential Revision: https://reviews.llvm.org/D51075
llvm-svn: 340651
Adrian Prantl [Fri, 24 Aug 2018 20:41:08 +0000 (20:41 +0000)]
Reduce the memory footprint of dsymutil. (NFC)
This (partially) fixes a regression introduced by
https://reviews.llvm.org/D43945 / r327399, which parallelized
DwarfLinker. This patch avoids parsing and allocating the memory for
all input DIEs up front and instead only allocates them in the
concurrent loop in the AnalyzeLambda. At the end of the loop the
memory from the LinkContext is cleared again.
This reduces the peak memory needed to link the debug info of a
non-modular build of the Swift compiler by >3GB.
rdar://problem/
43444464
Differential Revision: https://reviews.llvm.org/D51078
llvm-svn: 340650
Peter Collingbourne [Fri, 24 Aug 2018 20:38:15 +0000 (20:38 +0000)]
Reland r340552, "Driver: Enable address-significance tables by default when targeting COFF." which was reverted in r340579.
The underlying problem that caused the revert was fixed in r340648.
Differential Revision: https://reviews.llvm.org/D51049
llvm-svn: 340649
Peter Collingbourne [Fri, 24 Aug 2018 20:37:09 +0000 (20:37 +0000)]
CodeGen: Add two more conditions for adding symbols to the address-significance table.
Firstly, require the symbol to be used within the module. If a
symbol is unused within a module, then by definition it cannot be
address-significant within that module. This condition is useful on all
platforms because it could make symbol tables smaller -- without this
change, emitting an address-significance table could cause otherwise
unused undefined symbols to be added to the object file.
But this change is necessary with COFF specifically in order to
preserve the property that an unreferenced undefined symbol in an IR
module does not result in a link failure. This is already the case for
ELF because ELF linkers only reject links with unresolved symbols if
there is a relocation to that symbol, but COFF linkers require all
undefined symbols to be resolved regardless of relocations. So if
a module contains an unreferenced undefined symbol, we need to make
sure not to add it to the address-significance table (and thus the
symbol table) in case it doesn't end up resolved at link time.
Secondly, do not add dllimport symbols to the table. These symbols
won't be able to be resolved because their definitions live in another
module and are accessed via the IAT, and the address-significance
table has no effect on other modules anyway. It wouldn't make sense
to add the IAT entry symbol to the address-significance table either
because the IAT entry isn't address-significant -- the generated code
never takes its address.
Differential Revision: https://reviews.llvm.org/D51199
llvm-svn: 340648
Jonathan Peyton [Fri, 24 Aug 2018 20:35:42 +0000 (20:35 +0000)]
[OpenMP] Fixed affinity verbose double printing for balanced type.
llvm-svn: 340647
David Blaikie [Fri, 24 Aug 2018 20:31:05 +0000 (20:31 +0000)]
DebugInfo: Fix skipping CUs in DWARFv5 debug_names table
My previoust test case had skipped CUs from one TU out of a two-TU LTO
scenario, which meant the CU index wasn't needed (as it was unambiguous
which CU a table entry applied to) - expanding the test to use 3 TUs,
skipping one (so long as it's not the last one) shows the indexes are
miscomputed. Fix that with a little indirection for the index.
llvm-svn: 340646
Matt Davis [Fri, 24 Aug 2018 20:24:53 +0000 (20:24 +0000)]
[llvm-mca] Move views and stats into a Views subdir. NFC.
llvm-svn: 340645
Eli Friedman [Fri, 24 Aug 2018 20:18:34 +0000 (20:18 +0000)]
Add REQUIRES: x86-registered-target to test.
(This isn't really x86-specific, but we have to pick some non-Apple
triple to exercise the right codepath.)
llvm-svn: 340644
Stefan Pintilie [Fri, 24 Aug 2018 20:00:24 +0000 (20:00 +0000)]
[PowerPC] Emit xscpsgndp instead of xxlor when copying floating point scalar registers for P9
This patch will address using the xscpsgndp instruction to copy floating point
scalar registers instead of the xxlor (specifically XXLORf) instruction that is
currently used. Additionally, this patch of utilizing xscpsgndp will apply to
P9, while pre-P9 will still use xxlor.
Patch by amyk
Differential Revision: https://reviews.llvm.org/D50004
llvm-svn: 340643
Joel Galenson [Fri, 24 Aug 2018 19:40:35 +0000 (19:40 +0000)]
Use unique_ptr.
llvm-svn: 340642
Stefan Pintilie [Fri, 24 Aug 2018 19:38:29 +0000 (19:38 +0000)]
[Exception Handling] Unwind tables are required for all functions that have an EH personality.
This patch is for defect:
https://bugs.llvm.org/show_bug.cgi?id=32611
Functions may require unwind tables even if they are marked with the attribute
nounwind. Any function with an EH personality may require an unwind table.
Differential Revision: https://reviews.llvm.org/D50987
llvm-svn: 340641
Eli Friedman [Fri, 24 Aug 2018 19:31:52 +0000 (19:31 +0000)]
[LTO] Fix -save-temps with LTO and unnamed globals.
If all LLVM passes are disabled, we can't emit a summary because there
could be unnamed globals in the IR.
Differential Revision: https://reviews.llvm.org/D51198
llvm-svn: 340640
Stefan Pintilie [Fri, 24 Aug 2018 19:24:20 +0000 (19:24 +0000)]
[PowerPC] Change Test Options [NFC]
Patch by amyk
llvm-svn: 340639
Philip Reames [Fri, 24 Aug 2018 19:13:39 +0000 (19:13 +0000)]
[AST] Simplify code minorly using pattern match [NFC]
llvm-svn: 340638
Eli Friedman [Fri, 24 Aug 2018 19:12:13 +0000 (19:12 +0000)]
[AArch64] Reject inline asm with FP registers when FP is disabled.
Otherwise, we would crash trying to deal with an illegal input.
Differential Revision: https://reviews.llvm.org/D51202
llvm-svn: 340637
Aaron Ballman [Fri, 24 Aug 2018 18:48:35 +0000 (18:48 +0000)]
Thread safety analysis no longer hands when analyzing a self-referencing initializer.
This fixes PR38640.
llvm-svn: 340636
Martin Storsjo [Fri, 24 Aug 2018 18:36:42 +0000 (18:36 +0000)]
[Common] Discard the temp file while keeping the memory mapping open, on errors
Differential Revision: https://reviews.llvm.org/D51095
llvm-svn: 340635
Martin Storsjo [Fri, 24 Aug 2018 18:36:22 +0000 (18:36 +0000)]
[Support] Allow discarding a FileOutputBuffer without removing the memory mapping
Differential Revision: https://reviews.llvm.org/D51095
llvm-svn: 340634
Kostya Kortchinsky [Fri, 24 Aug 2018 18:21:32 +0000 (18:21 +0000)]
[scudo] Replace eraseHeader with compareExchangeHeader for Quarantined chunks
Summary:
The reason for the existence of `eraseHeader` was that it was deemed faster
to null-out a chunk header, effectively making it invalid, rather than marking
it as available, which incurred a checksum computation and a cmpxchg.
A previous use of `eraseHeader` was removed with D50655 due to a race.
Now we remove the second use of it in the Quarantine deallocation path and
replace is with a `compareExchangeHeader`.
The reason for this is that greatly helps debugging some heap bugs as the chunk
header is now valid and the chunk marked available, as opposed to the header
being invalid. Eg: we get an invalid state error, instead of an invalid header
error, which reduces the possibilities. The computational penalty is negligible.
Reviewers: alekseyshl, flowerhack, eugenis
Reviewed By: eugenis
Subscribers: delcypher, jfb, #sanitizers, llvm-commits
Differential Revision: https://reviews.llvm.org/D51224
llvm-svn: 340633
Jonathan Peyton [Fri, 24 Aug 2018 18:07:35 +0000 (18:07 +0000)]
[OpenMP] Fix tasking bug for decreasing hot team nthreads
The __kmp_execute_tasks_template() function reads the task_team and
current_task from the thread structure. There appears to be a pathological
timing where the number of threads in the hot team decreases and so a
thread is put in the pool via __kmp_free_thread(). It could be the case that:
1) A thread reads th_task_team into task_team local variables
and is then interrupted by the OS
2) Master frees the thread and sets current task and task team to NULL
3) The thread reads current_task as NULL
When this happens, current_task is dereferenced and a segfault occurs.
This patch just checks for current_task to not be NULL as well.
Differential Revision: https://reviews.llvm.org/D50651
llvm-svn: 340632
Craig Topper [Fri, 24 Aug 2018 18:05:04 +0000 (18:05 +0000)]
[X86] Teach combineLoopMAddPattern to handle cases where there is no loop and the add has two multiply inputs
Differential Revision: https://reviews.llvm.org/D50868
llvm-svn: 340631
Craig Topper [Fri, 24 Aug 2018 18:05:02 +0000 (18:05 +0000)]
[X86] Add test case for D50868. NFC
llvm-svn: 340630
Jonathan Peyton [Fri, 24 Aug 2018 18:05:00 +0000 (18:05 +0000)]
[OpenMP] Add check for hot_teams array
If hot teams are not being used, this code could seg fault without the added
check, and does so when composability is used in conjunction with nesting.
The fix prevents the segfault.
Differential Revision: https://reviews.llvm.org/D50649
llvm-svn: 340629
Jonathan Peyton [Fri, 24 Aug 2018 18:03:27 +0000 (18:03 +0000)]
[OpenMP] Fix incorrect barrier imbalance reporting in ITTNOTIFY
Exclude nested explicit tasks from timing, only outer level explicit task
counted and its time added to barrier arrive time for the thread.
Differential Revision: https://reviews.llvm.org/D50584
llvm-svn: 340628
Raphael Isemann [Fri, 24 Aug 2018 18:01:56 +0000 (18:01 +0000)]
[ASTImporter] Add test for PackExpansionExpr
Reviewers: a.sidorin, a_sidorin
Reviewed By: a_sidorin
Subscribers: martong, cfe-commits
Differential Revision: https://reviews.llvm.org/D51142
llvm-svn: 340627
Craig Topper [Fri, 24 Aug 2018 17:48:25 +0000 (17:48 +0000)]
[DAGCombiner][Mips] Don't combine bitcast+store after LegalOperations when the store is volatile, if the resulting store isn't Legal
Previously we allowed the store to be Custom. But without knowing for sure that the Custom handling won't split the store, we shouldn't convert a volatile store. We also probably shouldn't be creating a store the requires custom handling after LegalizeOps. This could lead to an infinite loop if the custom handling was to insert a bitcast. Though I guess isStoreBitCastBeneficial could be used to block such a loop.
The test changes here are due to the volatile part of this. The stores in the test are all volatile and i32 stores are marked custom, So we are no longer converting them
This is related to D50491 where I was trying to allow some bitcasting of volatile loads
Differential Revision: https://reviews.llvm.org/D50578
llvm-svn: 340626
Stefan Pintilie [Fri, 24 Aug 2018 17:27:35 +0000 (17:27 +0000)]
Revert "[Exception Handling] Unwind tables are required for all functions that have an EH personality."
This reverts commit rL340614.
Previous commit broke some llvm-cfi-verify tests.
llvm-svn: 340625
Jonas Toth [Fri, 24 Aug 2018 17:25:06 +0000 (17:25 +0000)]
[clang-format] fix PR38557 - comments between "default" and ':' causes the case label to be treated as an identifier
Summary:
The Bug was reported and fixed by Owen Pan. See the original bug report here: https://bugs.llvm.org/show_bug.cgi?id=38557
Patch by Owen Pan!
Reviewers: krasimir, djasper, klimek
Reviewed By: klimek
Subscribers: JonasToth, cfe-commits
Differential Revision: https://reviews.llvm.org/D50697
llvm-svn: 340624
Jonas Toth [Fri, 24 Aug 2018 17:14:31 +0000 (17:14 +0000)]
[clang-format] fix PR38525 - Extraneous continuation indent spaces with BreakBeforeBinaryOperators set to All
Summary: See bug report https://bugs.llvm.org/show_bug.cgi?id=38525 for more details.
Reviewers: djasper, klimek, krasimir, sammccall
Reviewed By: sammccall
Subscribers: hiraditya, JonasToth, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D50699
llvm-svn: 340623
Krzysztof Parzyszek [Fri, 24 Aug 2018 17:13:42 +0000 (17:13 +0000)]
[Hexagon] Remove unneeded strings from builtin definitions, NFC
llvm-svn: 340622
David Carlier [Fri, 24 Aug 2018 16:53:06 +0000 (16:53 +0000)]
[Sanitizer] implementing remaining function under OSX
- GetRandom and GetnumberOfCPUs using sys call for the former.
- enabling unit tests for the other oses.
Reviewers: kubamracek
Reviewed By: kubamracek
Differential Revision: https://reviews.llvm.org/D50937
llvm-svn: 340621
Julie Hockett [Fri, 24 Aug 2018 16:43:46 +0000 (16:43 +0000)]
[clang-doc] Fix memory leaks
Adds a virtual destructor to the base Info class.
Differential Revision: https://reviews.llvm.org/D51137
llvm-svn: 340620
David Bolvansky [Fri, 24 Aug 2018 16:39:41 +0000 (16:39 +0000)]
Revert [Inliner] Attribute callsites with inline remarks
llvm-svn: 340619
David Bolvansky [Fri, 24 Aug 2018 16:28:36 +0000 (16:28 +0000)]
[Inliner] Attribute callsites with inline remarks
Summary:
Sometimes reading an output *.ll file it is not easy to understand why some callsites are not inlined. We can read output of inline remarks (option --pass-remarks-missed=inline) and try correlating its messages with the callsites.
An easier way proposed by this patch is to add to every callsite processed by Inliner an attribute with the latest message that describes the cause of not inlining this callsite. The attribute is called //inline-remark//. By default this feature is off. It can be switched on by the option //-inline-remark-attribute//.
For example in the provided test the result method //@test1// has two callsites //@bar// and inline remarks report different inlining missed reasons:
remark: <unknown>:0:0: bar not inlined into test1 because too costly to inline (cost=-5, threshold=-6)
remark: <unknown>:0:0: bar not inlined into test1 because it should never be inlined (cost=never): recursive
It is not clear which remark correspond to which callsite. With the inline remark attribute enabled we get the reasons attached to their callsites:
define void @test1() {
call void @bar(i1 true) #0
call void @bar(i1 false) #2
ret void
}
attributes #0 = { "inline-remark"="(cost=-5, threshold=-6)" }
..
attributes #2 = { "inline-remark"="(cost=never): recursive" }
Patch by: yrouban (Yevgeny Rouban)
Reviewers: xbolva00, tejohnson, apilipenko
Reviewed By: xbolva00, tejohnson
Subscribers: eraman, llvm-commits
Differential Revision: https://reviews.llvm.org/D50435
llvm-svn: 340618
Philip Reames [Fri, 24 Aug 2018 16:24:48 +0000 (16:24 +0000)]
[LICM] Hoist an invariant_start out of loops if there are no stores executed before it
Once the invariant_start is reached, we know that no instruction *after* it can modify the memory. So, if we can prove the location isn't read *between entry into the loop and the execution of the invariant_start*, we can execute the invariant_start before entering the loop.
Differential Revision: https://reviews.llvm.org/D51181
llvm-svn: 340617
Joel Galenson [Fri, 24 Aug 2018 16:22:42 +0000 (16:22 +0000)]
Modify tests to show PLT entry labels
llvm-svn: 340616
Joel Galenson [Fri, 24 Aug 2018 16:15:44 +0000 (16:15 +0000)]
Add missing override keyword (NFC)
llvm-svn: 340615
Stefan Pintilie [Fri, 24 Aug 2018 15:51:47 +0000 (15:51 +0000)]
[Exception Handling] Unwind tables are required for all functions that have an EH personality.
This patch is for defect:
https://bugs.llvm.org/show_bug.cgi?id=32611
Functions may require unwind tables even if they are marked with the attribute
nounwind. Any function with an EH personality may require an unwind table.
Differential Revision: https://reviews.llvm.org/D50987
llvm-svn: 340614
John Brawn [Fri, 24 Aug 2018 15:48:30 +0000 (15:48 +0000)]
[PhiValues] Use callback value handles to invalidate deleted values
The way that PhiValues is integrated with BasicAA it is possible for a pass
which uses BasicAA to pick up an instance of BasicAA that uses PhiValues without
intending to, and then delete values from a function in a way that causes
PhiValues to return dangling pointers to these deleted values. Fix this by
having a set of callback value handles to invalidate values when they're
deleted.
llvm-svn: 340613
Joel Galenson [Fri, 24 Aug 2018 15:21:58 +0000 (15:21 +0000)]
[cfi-verify] Support cross-DSO
When used in cross-DSO mode, CFI will generate calls to special functions rather than trap instructions. For example, instead of generating
if (!InlinedFastCheck(f))
abort();
call *f
CFI generates
if (!InlinedFastCheck(f))
__cfi_slowpath(CallSiteTypeId, f);
call *f
This patch teaches cfi-verify to recognize calls to __cfi_slowpath and abort and treat them as trap functions.
In addition to normal symbols, we also parse the dynamic relocations to handle cross-DSO calls in libraries.
We also extend cfi-verify to recognize other patterns that occur using cross-DSO. For example, some indirect calls are not guarded by a branch to a trap but instead follow a call to __cfi_slowpath. For example:
if (!InlinedFastCheck(f))
call *f
else {
__cfi_slowpath(CallSiteTypeId, f);
call *f
}
In this case, the second call to f is not marked as protected by the current code. We thus recognize if indirect calls directly follow a call to a function that will trap on CFI violations and treat them as protected.
We also ignore indirect calls in the PLT, since on AArch64 each entry contains an indirect call that should not be protected by CFI, and these are labeled incorrectly when debug information is not present.
Differential Revision: https://reviews.llvm.org/D49383
llvm-svn: 340612
Joel Galenson [Fri, 24 Aug 2018 15:21:57 +0000 (15:21 +0000)]
[llvm-objdump] Label calls to the PLT.
Differential Revision: https://reviews.llvm.org/D50204
llvm-svn: 340611
Joel Galenson [Fri, 24 Aug 2018 15:21:56 +0000 (15:21 +0000)]
Find PLT entries for x86, x86_64, and AArch64.
This adds a new method to ELFObjectFileBase that returns the symbols and addresses of PLT entries.
This design was suggested by pcc and eugenis in https://reviews.llvm.org/D49383.
Differential Revision: https://reviews.llvm.org/D50203
llvm-svn: 340610
Louis Dionne [Fri, 24 Aug 2018 14:10:28 +0000 (14:10 +0000)]
[libc++] Fix handling of negated character classes in regex
Summary:
This commit fixes a regression introduced in r316095, where we don't match
inverted character classes when there's no negated characrers in the []'s.
rdar://problem/
43060054
Reviewers: mclow.lists, timshen, EricWF
Subscribers: christof, dexonsmith, cfe-commits
Differential Revision: https://reviews.llvm.org/D50534
llvm-svn: 340609
Louis Dionne [Fri, 24 Aug 2018 14:00:59 +0000 (14:00 +0000)]
[libc++] Remove race condition in std::async
Summary:
The state associated to the future was set in one thread (with synchronization)
but read in another thread without synchronization, which led to a data race.
https://bugs.llvm.org/show_bug.cgi?id=38181
rdar://problem/
42548261
Reviewers: mclow.lists, EricWF
Subscribers: christof, dexonsmith, cfe-commits
Differential Revision: https://reviews.llvm.org/D51170
llvm-svn: 340608
Kadir Cetinkaya [Fri, 24 Aug 2018 13:09:41 +0000 (13:09 +0000)]
[clangd] Initial cancellation mechanism for LSP requests.
Reviewers: ilya-biryukov, ioeric, hokein
Reviewed By: ilya-biryukov
Subscribers: mgorny, ioeric, MaskRay, jkorous, arphaman, jfb, cfe-commits
Differential Revision: https://reviews.llvm.org/D50502
llvm-svn: 340607
Florian Hahn [Fri, 24 Aug 2018 11:40:04 +0000 (11:40 +0000)]
[Local] Make DoesKMove required for combineMetadata.
This patch makes the DoesKMove argument non-optional, to force people
to think about it. Most cases where it is false are either code hoisting
or code sinking, where we pick one instruction from a set of
equal instructions among different code paths.
Reviewers: dberlin, nlopes, efriedma, davide
Reviewed By: efriedma
Differential Revision: https://reviews.llvm.org/D47475
llvm-svn: 340606
Kirill Bobyrev [Fri, 24 Aug 2018 11:25:43 +0000 (11:25 +0000)]
[clangd] Implement LIMIT iterator
This patch introduces LIMIT iterator, which is very important for
improving the quality of search query. LIMIT iterators can be applied on
top of BOOST iterators to prevent populating query request with a huge
number of low-quality symbols.
Reviewed by: sammccall
Differential Revision: https://reviews.llvm.org/D51029
llvm-svn: 340605
Eric Liu [Fri, 24 Aug 2018 11:23:56 +0000 (11:23 +0000)]
[clangd] Speculative code completion index request before Sema is run.
Summary:
For index-based code completion, send an asynchronous speculative index
request, based on the index request for the last code completion on the same
file and the filter text typed before the cursor, before sema code completion
is invoked. This can reduce the code completion latency (by roughly latency of
sema code completion) if the speculative request is the same as the one
generated for the ongoing code completion from sema. As a sequence of code
completions often have the same scopes and proximity paths etc, this should be
effective for a number of code completions.
Trace with speculative index request:{
F6997544}
Reviewers: hokein, ilya-biryukov
Reviewed By: ilya-biryukov
Subscribers: javed.absar, jfb, MaskRay, jkorous, arphaman, kadircet, cfe-commits
Differential Revision: https://reviews.llvm.org/D50962
llvm-svn: 340604
Dean Michael Berris [Fri, 24 Aug 2018 10:30:37 +0000 (10:30 +0000)]
[XRay] Refactor loadTraceFile(...) into two (NFC)
This patch splits the file trace loading function into two versions, one
that takes a filename and one that takes a `DataExtractor`.
This change is a precursor to larger changes to increase test coverage
for the trace loading implementation.
llvm-svn: 340603
Eric Liu [Fri, 24 Aug 2018 09:53:44 +0000 (09:53 +0000)]
Fix build bot after r340598.
Revert to the original behavior: only calculate real file path when
file is opened and avoid using InterndPath for real path calculation.
llvm-svn: 340602
Kirill Bobyrev [Fri, 24 Aug 2018 09:12:54 +0000 (09:12 +0000)]
[clangd] Log memory usage of DexIndex and MemIndex
This patch prints information about built index size estimation to
verbose logs. This is useful for optimizing memory usage of DexIndex and
comparisons with MemIndex.
Reviewed by: sammccall
Differential Revision: https://reviews.llvm.org/D51154
llvm-svn: 340601
Ilya Biryukov [Fri, 24 Aug 2018 09:03:54 +0000 (09:03 +0000)]
[clangd] Allow to merge symbols on-the-fly in global-symbol-builder
Summary:
The new mode avoids serializing and deserializing YAML.
This results in better performance and less memory usage. Reduce phase
is now almost instant.
The default is to use the old mode going through YAML serialization to
allow migrating MapReduce clients that require the old mode to operate
properly. After we migrate the clients, we can switch the default to
the new mode.
Reviewers: hokein, ioeric, kbobyrev, sammccall
Reviewed By: ioeric
Subscribers: MaskRay, jkorous, arphaman, kadircet, cfe-commits
Differential Revision: https://reviews.llvm.org/D51155
llvm-svn: 340600
Ilya Biryukov [Fri, 24 Aug 2018 09:03:29 +0000 (09:03 +0000)]
[Tooling] Add a isSingleProcess() helper to ToolExecutor
Summary:
Used in clangd's symbol builder to optimize for the common
shared-memory executor case.
Reviewers: ioeric
Reviewed By: ioeric
Subscribers: kadircet, cfe-commits
Differential Revision: https://reviews.llvm.org/D51164
llvm-svn: 340599
Eric Liu [Fri, 24 Aug 2018 08:59:54 +0000 (08:59 +0000)]
[FileManager] Do not call 'real_path' in getFile().
Summary:
This partially rolls back the change in D48903:
https://github.com/llvm-mirror/clang/commit/
89aa7f45a1f728144935289d4ce69d8522999de0#diff-0025af005307891b5429b6a834823d5eR318
`real_path` can be very expensive on real file systems, and calling it on each
opened file can slow down the compilation. This also slows down deserialized
ASTs for which real paths need to be recalculated for each input files again.
For clangd code completion latency (using preamble):
Before
{
F7039629}
After
{
F7039630}
Reviewers: ilya-biryukov, simark
Reviewed By: ilya-biryukov
Subscribers: kadircet, cfe-commits
Differential Revision: https://reviews.llvm.org/D51159
llvm-svn: 340598
Aleksandr Urakov [Fri, 24 Aug 2018 07:24:52 +0000 (07:24 +0000)]
[PDB] Make variables.test to pass using a 32-bit compiler too
Summary:
`variables.test` depends on mangled names, but the mangling depends
on the bitness. This patch specifies the bitness explicitly, so mangled names
doesn't differ when a 32-bit version of the compiler is used.
Reviewers: stella.stamenova, asmith
Reviewed By: stella.stamenova
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D51158
llvm-svn: 340597
Chandler Carruth [Fri, 24 Aug 2018 04:45:04 +0000 (04:45 +0000)]
[AVR] Fix inline asm calls now that the addrspace(0) there is explicit.
This updates the test case for r340519 so it should pass again. r340522
only got some of the AVR tests that needed an update.
llvm-svn: 340596
Kito Cheng [Fri, 24 Aug 2018 03:05:08 +0000 (03:05 +0000)]
[RISCV] RISC-V using -fuse-init-array by default
Reviewers: asb, apazos, mgrang
Reviewed By: asb
Differential Revision: https://reviews.llvm.org/D50043
llvm-svn: 340595
Justin Bogner [Fri, 24 Aug 2018 02:42:24 +0000 (02:42 +0000)]
[SDAG] Add versions of computeKnownBits that return a value
Having the KnownBits as an output parameter is kind of awkward to use
and a holdover from when it was two separate APInts. Instead, just
return a KnownBits object.
I'm leaving the existing interface in place for now, since updating
the callers all at once would be thousands of lines of diff.
llvm-svn: 340594
Kostya Serebryany [Fri, 24 Aug 2018 01:44:17 +0000 (01:44 +0000)]
[hwasan] implement detection of realloc-after-free
llvm-svn: 340593
Richard Smith [Fri, 24 Aug 2018 01:34:45 +0000 (01:34 +0000)]
Make llvm-profdata show -text work as advertised in the documentation.
Per LLVM's CommandGuide, llvm-profdata show -text is supposed to produce
textual output that can be passed as input to further llvm-profdata
invocations. This previously didn't work for two reasons:
1) -text was not sufficient to enable the machine-readable text format output;
instead, -text was effectively ignored if -counts was not also specified. (With
this patch, -counts is instead ignored if -text is specified, because the
machine-readable text format always includes counts.)
2) When the input data was an IR-level profile, the :ir marker was missing from
the output, resulting in a text format output that would not be usable as
profiling data due to function hash mismatches.
Differential Revision: https://reviews.llvm.org/D51188
llvm-svn: 340592
Kostya Serebryany [Fri, 24 Aug 2018 01:12:26 +0000 (01:12 +0000)]
[hwasan] implement detection of double-free (invalid-free)
llvm-svn: 340591
Nico Weber [Fri, 24 Aug 2018 00:12:58 +0000 (00:12 +0000)]
Attempt to fix ELF/lto-plugin-ignore.s on Windows after r340487.
I removed the ".exe" regex in the wrong place. lld-link in front of the
"error:" no longer has the suffix; the --plugin-opt diagnostic still has it.
llvm-svn: 340590
Raphael Isemann [Thu, 23 Aug 2018 23:21:52 +0000 (23:21 +0000)]
Add more pre-run asserts for the DirCompletionAbsolute test
Summary:
The DirCompletionAbsolute is still randomly failing on the nodes even after D50722, so this patch adds more asserts
that verify certain properties on which the actual completion implementation relies on.
The first assert checks that the directory we complete on actually exists. If the directory doesn't exist on the
next CI failure, this assert should catch it and we know that the 0 matches come from a missing base directory.
The second assert is just checking that we are below the PATH_MAX limit that the completion checks against.
This check could randomly fail if the temporary directories we generate are sometimes longer than PATH_MAX,
and the assert can tell us that this is the reason we failed (instead of the mysterious '0 matches').
(As a sidenote: We shouldn't be checking against PATH_MAX anyway in the code (as this is just wrong). Also
the disk completion API really needs a better error mechanism than returning 0 on both error or no-results.)
Reviewers: aprantl, friss
Reviewed By: aprantl
Subscribers: abidh
Differential Revision: https://reviews.llvm.org/D51111
llvm-svn: 340589
Reid Kleckner [Thu, 23 Aug 2018 22:58:56 +0000 (22:58 +0000)]
Make LLVM_ENABLE_CRASH_DUMPS set a variable default
That way users can set the default to true, but then disable core dumps
from certain apps that link support.
llvm-svn: 340588
Kuba Mracek [Thu, 23 Aug 2018 22:55:58 +0000 (22:55 +0000)]
[sanitizer] Don't call task_for_pid(mach_task_self). NFC.
Calling task_for_pid with mach_task_self is just returning mach_task_self anyway, but it also triggers system warnings (task_for_pid is only supposed to be used by high-privileged executables). NFC.
rdar://problem/
39198248
Differential Revision: https://reviews.llvm.org/D51119
llvm-svn: 340587
Stephen Kelly [Thu, 23 Aug 2018 22:41:52 +0000 (22:41 +0000)]
Fix typo
llvm-svn: 340586
Raphael Isemann [Thu, 23 Aug 2018 22:40:54 +0000 (22:40 +0000)]
Reuse the SelectorTable from Clang's Preprocessor
Summary:
At the moment we create our own SelectorTable even though the Preprocessor always
creates one for us that we can (and should) reuse.
Reviewers: vsk
Reviewed By: vsk
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D51185
llvm-svn: 340585
David Blaikie [Thu, 23 Aug 2018 22:35:58 +0000 (22:35 +0000)]
DebugInfo: Improve debug location merging
Fix a set of related bugs:
* Considering two locations as equivalent when their lines are the same
but their scopes are different causes erroneous debug info that
attributes a commoned call to be attributed to one of the two calls it
was commoned from.
* The previous code to compute a new location's scope was inaccurate and
would use the inlinedAt that was the /parent/ of the inlinedAt that is
the nearest common one, and also used that parent scope instead of the
nearest common scope.
* Not generating new locations generally seemed like a lower quality
choice
There was some risk that generating more new locations could hurt object
size by making more fine grained line table entries, but it looks like
that was offset by the decrease in line table (& address & ranges) size
caused by more accurately computing the scope - which likely lead to
fewer range entries (more contiguous ranges) & reduced size that way.
All up with these changes I saw minor reductions (-1.21%, -1.77%) in
.rela.debug_ranges and .rela.debug_addr (in a fission, compressed debug
info build) as well as other minor size changes (generally reductinos)
across the board (-1.32% debug_info.dwo, -1.28% debug_loc.dwo). Measured
in an optimized (-O2) build of the clang binary.
If you are investigating a size regression in an optimized debug builds,
this is certainly a patch to look into - and I'd be happy to look into
any major regressions found & see what we can do to address them.
llvm-svn: 340583
Alina Sbirlea [Thu, 23 Aug 2018 21:56:30 +0000 (21:56 +0000)]
[IDF] Make GraphDiff a const constructor argument.
llvm-svn: 340581
Aaron Puchert [Thu, 23 Aug 2018 21:53:04 +0000 (21:53 +0000)]
Remove more const_casts by using ConstStmtVisitor [NFC]
Again, this required adding some const specifiers.
llvm-svn: 340580
Peter Collingbourne [Thu, 23 Aug 2018 21:34:57 +0000 (21:34 +0000)]
Revert r340552, "Driver: Enable address-significance tables by default when targeting COFF."
Received multiple reports of breakage due to undefined symbols
suspected to be caused by this change.
llvm-svn: 340579
Leonard Mosescu [Thu, 23 Aug 2018 21:34:33 +0000 (21:34 +0000)]
Restrict the set of plugins used for ProcessMinidump
1. The dynamic loaders should not be needed for loading minidumps
and they may create problems (ex. the macOS loader resets the list of
loaded sections, which for minidumps are already set up during minidump loading)
2. In general, the extra plugins can do extraneous work which hurts performance
(ex. trying to set up implicit symbolic breakpoints, which in turn will trigger
extra debug information loading)
Differential Revision: https://reviews.llvm.org/D51176
llvm-svn: 340578
George Burgess IV [Thu, 23 Aug 2018 21:29:11 +0000 (21:29 +0000)]
[MemorySSA] Fix def optimization handling
In order for more complex updates of MSSA to happen (e.g. those in
D45299), MemoryDefs need to be actual `Use`s of what they're optimized
to. This patch makes that happen.
In addition, this patch changes our optimization behavior for Defs
slightly: we'll now consider a Def optimization invalid if the
MemoryAccess it's optimized to changes. That we weren't doing this
before was a bug, but given that we were tracking these with a WeakVH
before, it was sort of difficult for that to matter.
We're already have both of these behaviors for MemoryUses. The
difference is that a MemoryUse's defining access is always its optimized
access, and defining accesses are always `Use`s (in the LLVM sense).
Nothing exploded when testing a stage3 clang+llvm locally, so...
This also includes the test-case promised in r340461.
llvm-svn: 340577
Kostya Kortchinsky [Thu, 23 Aug 2018 21:13:39 +0000 (21:13 +0000)]
[sanitizer] Change Mmap*NoAccess to return nullptr on error
Summary:
`MmapNoAccess` & `MmapFixedNoAccess` return directly the result of
`internal_mmap`, as opposed to other Mmap functions that return nullptr.
This inconsistency leads to some confusion for the callers, as some check for
`~(uptr)0` (`MAP_FAILED`) for failure (while it can fail with `-ENOMEM` for
example).
Two potential solutions: change the callers, or make the functions return
`nullptr` on failure to follow the precedent set by the other functions.
The second option looked more appropriate to me.
Correct the callers that were wrongly checking for `~(uptr)0` or
`MAP_FAILED`.
TODO for follow up CLs:
- There are a couple of `internal_mmap` calls in XRay that check for
MMAP_FAILED as a result as well (cc: @dberris); they should use
`internal_iserror`;
Reviewers: eugenis, alekseyshl, dberris, kubamracek
Reviewed By: alekseyshl
Subscribers: kristina, kubamracek, delcypher, #sanitizers, dberris, llvm-commits
Differential Revision: https://reviews.llvm.org/D50940
llvm-svn: 340576
Aaron Puchert [Thu, 23 Aug 2018 21:13:32 +0000 (21:13 +0000)]
Remove unnecessary const_cast [NFC]
This required adding a few const specifiers on functions.
Also a minor formatting fix suggested in D49885.
llvm-svn: 340575
Adrian Prantl [Thu, 23 Aug 2018 21:08:30 +0000 (21:08 +0000)]
Change xfail to skipIf. The exact condition is really difficult to get
right and doesn't add much signal.
llvm-svn: 340574
Adrian Prantl [Thu, 23 Aug 2018 21:00:37 +0000 (21:00 +0000)]
XFAIL test for older versions of clang
llvm-svn: 340573
Petar Jovanovic [Thu, 23 Aug 2018 20:41:09 +0000 (20:41 +0000)]
[MIPS GlobalISel] Lower i8 and i16 arguments
Lower integer arguments smaller than i32.
Support both register and stack arguments.
Define setLocInfo function for setting LocInfo field in ArgLocs vector.
Patch by Petar Avramovic.
Differential Revision: https://reviews.llvm.org/D51031
llvm-svn: 340572
Raphael Isemann [Thu, 23 Aug 2018 20:40:45 +0000 (20:40 +0000)]
Fix broken builtin functions in the expression command
Summary:
Calling any non-libc builtin function in the expression command currently just causes Clang
to state that the function is not known. The reason for this is that we actually never
initialize the list of builtin functions in the Builtin::Context.
This patch just calls the initializer for the builtins in the preprocessor. Also adds some tests
for the new builtins.
It also gets rid of the extra list of builtins in the ClangExpressionParser, as we can just reuse
the existing list in the Preprocessor for the ASTContext. Having just one list of builtins around
is also closer to the standard Clang behavior.
Reviewers: #lldb, vsk
Reviewed By: vsk
Subscribers: sgraenitz, clayborg, vsk, lldb-commits
Differential Revision: https://reviews.llvm.org/D50481
llvm-svn: 340571
Walter Lee [Thu, 23 Aug 2018 20:17:42 +0000 (20:17 +0000)]
[llvm-mca] Fix parameter name. NFC.
llvm-svn: 340570
Thomas Lively [Thu, 23 Aug 2018 19:23:13 +0000 (19:23 +0000)]
[WebAssembly] Prioritize splats over v128.consts
Summary:
Splats are fewer bytes than v128.consts, so use them when either could
apply.
Reviewers: aheejin, dschuff
Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits
Differential Revision: https://reviews.llvm.org/D51179
llvm-svn: 340569
Sean Fertile [Thu, 23 Aug 2018 19:10:40 +0000 (19:10 +0000)]
Revert "[PPC64] Fix DQ-form instruction handling and emit error for misalign..."
This reverts commit
5125b44dbb5d06b715213e4bec75c7346bfcc7d3.
ppc64-dq.s and ppc64-error-missaligned-dq.s fail on several of the build-bots.
Reverting to investigate.
llvm-svn: 340568
Alina Sbirlea [Thu, 23 Aug 2018 18:46:48 +0000 (18:46 +0000)]
Remove the use of pair inside the tuple in concat_iterator.
Summary:
Remove the use of pair inside the tuple in concat_iterator, and create separate begins and ends tuples instead.
This fixes the failure for llvm <= 3.7 and libstd++ that broke the hexagon build.
Reviewers: timshen
Subscribers: sanjoy, jlebar, dexonsmith, kparzysz, llvm-commits
Differential Revision: https://reviews.llvm.org/D51067
llvm-svn: 340567
Matt Davis [Thu, 23 Aug 2018 18:42:37 +0000 (18:42 +0000)]
[llvm-mca] Set the Selection strategy to Default if nullptr is passed.
* Set (not reset) the strategy in Scheduler::setCustomStrategyImpl()
llvm-svn: 340566
Sanjay Patel [Thu, 23 Aug 2018 18:38:40 +0000 (18:38 +0000)]
[x86] move/add tests for insertelement with variable index; NFC
The variable index pattern is different than the constant index
cases as shown in D51125. We might want to splat regardless of
whether the scalar is loaded from memory or transferred from GPR.
llvm-svn: 340565
Sean Fertile [Thu, 23 Aug 2018 18:35:09 +0000 (18:35 +0000)]
[PPC64] Fix DQ-form instruction handling and emit error for misalignment.
Fixes the handling of *_DS relocations used on DQ-form instructions where we
were overwriting some of the extended opcode bits. Also adds an alignment check
so that the user will receive a diagnostic error if the value we are writing
is not properly aligned.
Differential Revision: https://reviews.llvm.org/D51124
llvm-svn: 340564
David Bolvansky [Thu, 23 Aug 2018 18:34:58 +0000 (18:34 +0000)]
[LoopVectorize][NFCI] Use find instead of count
Summary:
Avoid "count" if possible -> use "find" to check for the existence of keys.
Passed llvm test suite.
Reviewers: fhahn, dcaballe, mkuper, rengolin
Reviewed By: fhahn
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D51054
llvm-svn: 340563
Walter Lee [Thu, 23 Aug 2018 18:26:26 +0000 (18:26 +0000)]
Fix format string issue introduced in r340548
Make format string portable.
llvm-svn: 340562
Douglas Yung [Thu, 23 Aug 2018 18:20:13 +0000 (18:20 +0000)]
Fixup AreCoreFilesPrevented() to consider first LLVM_ENABLE_CRASH_DUMPS and secondly coreFilesPrevented.
The previous change ignored the latter resulting in crash dumps being generated when LLVM_ENABLE_CRASH_DUMPS was
set, but coreFilesPrevented was true.
llvm-svn: 340561
Alex Langford [Thu, 23 Aug 2018 18:05:45 +0000 (18:05 +0000)]
[cmake] Add option to skip building lldb-server
Summary:
There is currently a way to skip the debugserver build. See how the CMake
variables SKIP_DEBUGSERVER and LLDB_CODESIGN_IDENTITY are used if you're
interested in that.
This allows us to skip building lldb-server as well. There is another
debug server called ds2 that can be used with LLDB. If you choose to use
ds2, this flag is very useful because it can cut down the build time of LLDB.
Differential Revision: https://reviews.llvm.org/D49282
llvm-svn: 340560
Vedant Kumar [Thu, 23 Aug 2018 17:55:03 +0000 (17:55 +0000)]
[docs] Regenerate ClangCommandLineReference.rst
llvm-svn: 340559
Vedant Kumar [Thu, 23 Aug 2018 17:54:48 +0000 (17:54 +0000)]
[options] Document -(static|shared)-libsan
llvm-svn: 340558
Adrian Prantl [Thu, 23 Aug 2018 17:51:14 +0000 (17:51 +0000)]
Fix check for dictionary entry
llvm-svn: 340557
Craig Topper [Thu, 23 Aug 2018 17:45:53 +0000 (17:45 +0000)]
[ValueTracking] Fix assert message and add test case for r340546 and PR38677.
The bug was already fixed. This just adds a test case for it.
llvm-svn: 340556
Peter Collingbourne [Thu, 23 Aug 2018 17:44:42 +0000 (17:44 +0000)]
COFF: Implement safe ICF on rodata using address-significance tables.
Differential Revision: https://reviews.llvm.org/D51050
llvm-svn: 340555
Alexey Bataev [Thu, 23 Aug 2018 17:43:40 +0000 (17:43 +0000)]
[DEBUGINFO] Fix misprint in the name of DebugDirectivesOnly, NFC.
llvm-svn: 340553
Peter Collingbourne [Thu, 23 Aug 2018 17:43:29 +0000 (17:43 +0000)]
Driver: Enable address-significance tables by default when targeting COFF.
Differential Revision: https://reviews.llvm.org/D51049
llvm-svn: 340552
Adrian Prantl [Thu, 23 Aug 2018 17:30:56 +0000 (17:30 +0000)]
XFAIL test for older versions of dsymutil
llvm-svn: 340550
Tim Renouf [Thu, 23 Aug 2018 17:28:33 +0000 (17:28 +0000)]
[RegisterCoalescer] Fix for assert in removePartialRedundancy
Summary:
I got "Use not jointly dominated by defs" when removePartialRedundancy
attempted to prune then re-extend a subrange whose only liveness was a
dead def at the copy being removed.
V2: Removed junk from test. Improved comment.
V3: Addressed minor review comments.
Subscribers: MatzeB, qcolombet, nhaehnle, llvm-commits
Differential Revision: https://reviews.llvm.org/D50914
Change-Id: I6f894e9f517f71e921e0c6d81d28c5f344db8dad
llvm-svn: 340549