platform/upstream/llvm.git
6 years agoFix layering between SCCP and IPO SCCP
David Blaikie [Thu, 22 Mar 2018 21:41:29 +0000 (21:41 +0000)]
Fix layering between SCCP and IPO SCCP

Transforms/Scalar/SCCP.cpp implemented both the Scalar and IPO SCCP, but
this meant Transforms/Scalar including Transfroms/IPO headers, creating
a circular dependency. (IPO depends on Scalar already) - so move the IPO
SCCP shims out into IPO and the basic library implementation accessible
from Scalar/SCCP.h to be used from the IPO/SCCP.cpp implementation.

llvm-svn: 328250

6 years ago[CFG] [analyzer] NFC: Move construction context allocation into a helper method.
Artem Dergachev [Thu, 22 Mar 2018 21:40:24 +0000 (21:40 +0000)]
[CFG] [analyzer] NFC: Move construction context allocation into a helper method.

Improve readability of ConstructionContext::createFromLayers().

Differential Revision: https://reviews.llvm.org/D44725

llvm-svn: 328249

6 years ago[CFG] [analyzer] Add C++17-specific variable and return construction contexts.
Artem Dergachev [Thu, 22 Mar 2018 21:37:39 +0000 (21:37 +0000)]
[CFG] [analyzer] Add C++17-specific variable and return construction contexts.

In C++17 copy elision is mandatory for variable and return value constructors
(as long as it doesn't involve type conversion) which results in AST that does
not contain elidable constructors in their usual places. In order to provide
construction contexts in this scenario we need to cover more AST patterns.

This patch makes the CFG prepared for these scenarios by:

- Fork VariableConstructionContext and ReturnedValueConstructionContext into
  two different sub-classes (each) one of which indicates the C++17 case and
  contains a reference to an extra CXXBindTemporaryExpr.
- Allow CFGCXXRecordTypedCall element to accept VariableConstructionContext and
  ReturnedValueConstructionContext as its context.

Differential Revision: https://reviews.llvm.org/D44597

llvm-svn: 328248

6 years ago[analyzer] Make symbol_iterator iterate over SVal's symbolic base.
Artem Dergachev [Thu, 22 Mar 2018 21:30:58 +0000 (21:30 +0000)]
[analyzer] Make symbol_iterator iterate over SVal's symbolic base.

If a memory region (or an SVal that represents a pointer to that memory region)
is a (direct or indirect, not necessarily proper) sub-region of a SymbolicRegion
then it is said to have a symbolic base.

For now SVal::symbol_iterator explores the symbol within a symbolic region
only when the SVal represents a pointer to the symbolic region itself,
not to any of its sub-regions.

This behavior is not indended by any user of symbol_iterator; all users who
cared about such behavior were expecting the iterator to descend into the
symbolic base of an arbitrary region, find the parent symbol of the symbolic
base region, and iterate over that symbol. Lack of such behavior resulted in
bugs demonstarted by the test cases.

Hence the decision to change the API to behave more intuitively.

Differential Revision: https://reviews.llvm.org/D44347

llvm-svn: 328247

6 years ago[MIR] Making MIR Printing, opt -dot-cfg, and -debug printing faster
Roman Tereshin [Thu, 22 Mar 2018 21:29:07 +0000 (21:29 +0000)]
[MIR] Making MIR Printing, opt -dot-cfg, and -debug printing faster

Value::printAsOperand has been scanning the entire module just to
print a single value as an operand, regardless being asked to print a
type or not at all, and regardless really needing to scan the module
to print a type.

It made some of the users of the method exceptionally slow on large
IR-modules (or large MIR-files with large IR-modules embedded).

This patch defers scanning a module looking for struct types, mostly
numbered struct types, as much as possible, speeding up those users
w/o changing any APIs at all.

See speedup examples below:

Release Build:

# 83 seconds -> 5.5 seconds
time ./bin/llc -start-before=irtranslator -stop-after=irtranslator \
  -global-isel -global-isel-abort=2 -simplify-mir sqlite3.O0.ll -o \
  sqlite3.O0.ll.regbankselected.mir

# 133 seconds -> 6.2 seconds
time ./bin/opt sqlite3.O0.ll -dot-cfg -disable-output

Release + Asserts Build:

# 95 seconds -> 5.5 seconds
time ./bin/llc -start-before=irtranslator -stop-after=irtranslator \
  -global-isel -global-isel-abort=2 -simplify-mir sqlite3.O0.ll -o \
  sqlite3.O0.ll.regbankselected.mir

# 146 seconds -> 6.2 seconds
time ./bin/opt sqlite3.O0.ll -dot-cfg -disable-output

# 1096 seconds -> 553 seconds
time ./bin/llc -debug-only=isel -fast-isel=false -stop-after=isel \
  sqlite3.O0.ll -o /dev/null 2> err

where sqlite3.O0.ll is non-optimized IR produced from
sqlite-amalgamation (http://sqlite.org/download.html), which is entire
SQLite3 implementation in a single C-file.

Benchmarked on 4-cores / 8 threads PCI-E SSD iMac running macOS

Reviewers: dexonsmith, bkramer, void, chandlerc, aditya_nandakumar, dsanders, qcolombet,

Reviewed By: bogner

Subscribers: thegameg, llvm-commits

Differential Revision: https://reviews.llvm.org/D44132

llvm-svn: 328246

6 years agoUse DoNotOptimize to prevent new/delete elision.
Eric Fiselier [Thu, 22 Mar 2018 21:28:09 +0000 (21:28 +0000)]
Use DoNotOptimize to prevent new/delete elision.

The new/delete tests, in particular those which test replacement
functions, often fail when the optimizer is enabled because the
calls to new/delete may be optimized away, regardless of their side-effects.

This patch converts the tests to use DoNotOptimize in order to prevent
the elision.

llvm-svn: 328245

6 years agoRevert "Revert "[InstrProf] Support for external functions in text format.""
Mircea Trofin [Thu, 22 Mar 2018 21:26:52 +0000 (21:26 +0000)]
Revert "Revert "[InstrProf] Support for external functions in text format.""

Summary:
This reverts commit 364eb09576a7667bc6d3ff80c52a83014ccac976 and separates out
the portion that was fixing binary reader error propagation - turns out, there
are production cases where that causes a regression.

Will re-introduce the error propagation fix separately.

The fix to the text reader error propagation is still "in".

Reviewers: bkramer

Reviewed By: bkramer

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D44807

llvm-svn: 328244

6 years agoFix test failure on Windows caused by different underlying enumeration type rules
Eric Fiselier [Thu, 22 Mar 2018 21:17:07 +0000 (21:17 +0000)]
Fix test failure on Windows caused by different underlying enumeration type rules

llvm-svn: 328243

6 years agoRevert "Set dso_local on vtables."
Rafael Espindola [Thu, 22 Mar 2018 21:14:16 +0000 (21:14 +0000)]
Revert "Set dso_local on vtables."

This reverts commit r328238.

Looks like it broke some buildbots.

llvm-svn: 328242

6 years ago[X86][SkylakeClient] Fix a bunch of instructions that were incorrectly assigned Port0...
Craig Topper [Thu, 22 Mar 2018 21:10:07 +0000 (21:10 +0000)]
[X86][SkylakeClient] Fix a bunch of instructions that were incorrectly assigned Port015 instead of Port01.

The VEC ADD and VEC MUL units aren't present on port 5 on SkylakeClient.

llvm-svn: 328241

6 years ago[MachineOutliner][NFC] Refactoring + comments in runOnModule
Jessica Paquette [Thu, 22 Mar 2018 21:07:09 +0000 (21:07 +0000)]
[MachineOutliner][NFC] Refactoring + comments in runOnModule

Split up some of the if/else branches in runOnModule. Elaborate on some
comments. Replace a call to getOrCreateMachineFunction with getMachineFunction.

This makes it clearer what's happening in runOnModule, and ensures that the
outliner doesn't create any MachineFunctions which will never be used by the
outliner (or anything else, really).

llvm-svn: 328240

6 years agoMore OpenBSD fixes
Vitaly Buka [Thu, 22 Mar 2018 20:42:28 +0000 (20:42 +0000)]
More OpenBSD fixes

Summary:
- Use internal_syscall_ptr in internal_readlink
- use sigcontext on OpenBSD

Patch by David CARLIER

Reviewers: krytarowski, vitalybuka

Reviewed By: vitalybuka

Subscribers: kubamracek, llvm-commits, #sanitizers

Differential Revision: https://reviews.llvm.org/D44713

llvm-svn: 328239

6 years agoSet dso_local on vtables.
Rafael Espindola [Thu, 22 Mar 2018 20:33:01 +0000 (20:33 +0000)]
Set dso_local on vtables.

llvm-svn: 328238

6 years ago[CodeGen] Add a new pass for PostRA sink
Jun Bum Lim [Thu, 22 Mar 2018 20:06:47 +0000 (20:06 +0000)]
[CodeGen] Add a new pass for PostRA sink

Summary:
This pass sinks COPY instructions into a successor block, if the COPY is not
used in the current block and the COPY is live-in to a single successor
(i.e., doesn't require the COPY to be duplicated).  This avoids executing the
the copy on paths where their results aren't needed.  This also exposes
additional opportunites for dead copy elimination and shrink wrapping.

These copies were either not handled by or are inserted after the MachineSink
pass. As an example of the former case, the MachineSink pass cannot sink
COPY instructions with allocatable source registers; for AArch64 these type
of copy instructions are frequently used to move function parameters (PhyReg)
into virtual registers in the entry block..

For the machine IR below, this pass will sink %w19 in the entry into its
successor (%bb.1) because %w19 is only live-in in %bb.1.

```
   %bb.0:
      %wzr = SUBSWri %w1, 1
      %w19 = COPY %w0
      Bcc 11, %bb.2
    %bb.1:
      Live Ins: %w19
      BL @fun
      %w0 = ADDWrr %w0, %w19
      RET %w0
    %bb.2:
      %w0 = COPY %wzr
      RET %w0
```
As we sink %w19 (CSR in AArch64) into %bb.1, the shrink-wrapping pass will be
able to see %bb.0 as a candidate.

With this change I observed 12% more shrink-wrapping candidate and 13% more dead copies deleted  in spec2000/2006/2017 on AArch64.

Reviewers: qcolombet, MatzeB, thegameg, mcrosier, gberry, hfinkel, john.brawn, twoh, RKSimon, sebpop, kparzysz

Reviewed By: sebpop

Subscribers: evandro, sebpop, sfertile, aemerson, mgorny, javed.absar, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D41463

llvm-svn: 328237

6 years agoDocument optforfuzzing attribute created in r328214.
Matt Morehouse [Thu, 22 Mar 2018 19:50:10 +0000 (19:50 +0000)]
Document optforfuzzing attribute created in r328214.

llvm-svn: 328236

6 years ago[DWARF] Replace assert with diagnostic. PR36868.
Paul Robinson [Thu, 22 Mar 2018 19:37:56 +0000 (19:37 +0000)]
[DWARF] Replace assert with diagnostic. PR36868.

llvm-svn: 328235

6 years agoMove the initialization of the Meta Renamer pass over to IPO along with the rest...
David Blaikie [Thu, 22 Mar 2018 19:36:54 +0000 (19:36 +0000)]
Move the initialization of the Meta Renamer pass over to IPO along with the rest of it that was moved in r328209

llvm-svn: 328234

6 years ago[DAG, X86] Fix ISel-time node insertion ids
Nirav Dave [Thu, 22 Mar 2018 19:32:07 +0000 (19:32 +0000)]
[DAG, X86] Fix ISel-time node insertion ids

As in SystemZ backend, correctly propagate node ids when inserting new
unselected nodes into the DAG during instruction Seleciton for X86
target.

Fixes PR36865.

Reviewers: jyknight, craig.topper

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D44797

llvm-svn: 328233

6 years ago[SymbolFilePDB] Use section contributions as another way to determine the compiland
Aaron Smith [Thu, 22 Mar 2018 19:26:33 +0000 (19:26 +0000)]
[SymbolFilePDB] Use section contributions as another way to determine the compiland

Some PDB Symbols don't have line information. Use the section contributions to determine their compiland.
This is useful to determine the parent compiland for PDBSymbolTypeData, i.e. variables.

llvm-svn: 328232

6 years ago[X86] Correct the scheduling data for some of the 32 and 64 bit multiplies to as...
Craig Topper [Thu, 22 Mar 2018 19:22:51 +0000 (19:22 +0000)]
[X86] Correct the scheduling data for some of the 32 and 64 bit multiplies to as best as I understand how they are implemented.

llvm-svn: 328231

6 years ago[SymbolFilePDB] Ignore compiler generated functions when creating the LLDB type from...
Aaron Smith [Thu, 22 Mar 2018 19:21:34 +0000 (19:21 +0000)]
[SymbolFilePDB] Ignore compiler generated functions when creating the LLDB type from a PDB

llvm-svn: 328230

6 years agoUn-XFAIL a test under new GCC version; the GCC bug has been fixed
Eric Fiselier [Thu, 22 Mar 2018 19:18:08 +0000 (19:18 +0000)]
Un-XFAIL a test under new GCC version; the GCC bug has been fixed

llvm-svn: 328229

6 years agoFixed __kmpc_get_target_offload() to call library initialization.
Andrey Churbanov [Thu, 22 Mar 2018 18:51:51 +0000 (18:51 +0000)]
Fixed __kmpc_get_target_offload() to call library initialization.

Differential Revision: https://reviews.llvm.org/D44793

llvm-svn: 328228

6 years ago[InstCombineCalls] Update deprecated API usage (NFC)
Daniel Neilson [Thu, 22 Mar 2018 18:36:15 +0000 (18:36 +0000)]
[InstCombineCalls] Update deprecated API usage (NFC)

Summary:
Just updating a call to MemSetInst::getAlignment() to MemSetInst::getDestAlignment(). The
former has been deprecated.

llvm-svn: 328227

6 years ago[X86][Btver2] Conversion, MaskedLoad/MaskedStore and NTStores all are scheduled throu...
Simon Pilgrim [Thu, 22 Mar 2018 18:29:16 +0000 (18:29 +0000)]
[X86][Btver2] Conversion, MaskedLoad/MaskedStore and NTStores all are scheduled through the JFPU1 pipe

llvm-svn: 328226

6 years agoFix improperly failing test - and the code it was testing. Thanks to Stephan Lavavej...
Marshall Clow [Thu, 22 Mar 2018 18:27:28 +0000 (18:27 +0000)]
Fix improperly failing test - and the code it was testing. Thanks to Stephan Lavavej for the catch.

llvm-svn: 328225

6 years agoSet dso_local on builtin functions.
Rafael Espindola [Thu, 22 Mar 2018 18:03:13 +0000 (18:03 +0000)]
Set dso_local on builtin functions.

The difference between CreateRuntimeFunction and CreateBuiltinFunction
is that CreateBuiltinFunction would not set dllimport or dso_local.

To keep the current semantics, just forward to CreateRuntimeFunction
with Local=true so it doesn't add dllimport.

llvm-svn: 328224

6 years agoFix Address Size in test.
Rafael Espindola [Thu, 22 Mar 2018 17:46:57 +0000 (17:46 +0000)]
Fix Address Size in test.

This is an i386 test, so it should be 4.

llvm-svn: 328223

6 years ago[X86][Btver2] FCMP (inc FMAX/FMIN) instructions use the JFPA functional pipe
Simon Pilgrim [Thu, 22 Mar 2018 17:43:12 +0000 (17:43 +0000)]
[X86][Btver2] FCMP (inc FMAX/FMIN) instructions use the JFPA functional pipe

The ymm instructions are double pumped as well.

llvm-svn: 328222

6 years ago[Codeview/PDB] Rename some methods for clarity.
Zachary Turner [Thu, 22 Mar 2018 17:37:28 +0000 (17:37 +0000)]
[Codeview/PDB] Rename some methods for clarity.

NFC, this just renames some methods to better express what they
do, and also adds a few helper methods to add some symmetry to the
API in a few places (for example there was a getStringFromId but not
a getIdFromString method in the string table).

llvm-svn: 328221

6 years ago[clang-format] Fix ObjC style guesser to also iterate over child lines
Ben Hamilton [Thu, 22 Mar 2018 17:37:19 +0000 (17:37 +0000)]
[clang-format] Fix ObjC style guesser to also iterate over child lines

Summary:
When I wrote `ObjCHeaderStyleGuesser`, I incorrectly assumed the
correct way to iterate over all tokens in `AnnotatedLine` was to
iterate over the linked list tokens starting with
`AnnotatedLine::First`.

However, `AnnotatedLine` also contains a vector
`AnnotedLine::Children` with child `AnnotedLine`s which have their own
tokens which we need to iterate over.

Because I didn't iterate over the tokens in the children lines, the
ObjC style guesser would fail on syntax like:

  #define FOO ({ NSString *s = ... })

as the statement(s) inside { ... } are child lines.

This fixes the bug and adds a test. I confirmed the test
failed before the fix, and passed after the fix.

Test Plan: New tests added. Ran tests with:
  % make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: djasper, jolesiak, Wizard

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44790

llvm-svn: 328220

6 years ago[OpenMP][Clang] Add call to global data sharing stack initialization on the workers...
Gheorghe-Teodor Bercea [Thu, 22 Mar 2018 17:33:27 +0000 (17:33 +0000)]
[OpenMP][Clang] Add call to global data sharing stack initialization on the workers side

Summary: The workers also need to initialize the global stack. The call to the initialization function needs to happen after the kernel_init() function is called by the master. This ensures that the per-team data structures of the runtime have been initialized.

Reviewers: ABataev, grokos, carlo.bertolli, caomhin

Reviewed By: ABataev

Subscribers: jholewinski, guansong, cfe-commits

Differential Revision: https://reviews.llvm.org/D44749

llvm-svn: 328219

6 years ago[GISel]: Fix incorrect IRTranslation while translating null pointer types
Aditya Nandakumar [Thu, 22 Mar 2018 17:31:38 +0000 (17:31 +0000)]
[GISel]: Fix incorrect IRTranslation while translating null pointer types

https://reviews.llvm.org/D44762

Currently IRTranslator produces
%vreg17<def>(p0) = G_CONSTANT 0;

instead we should build
%vreg16(s64) = G_CONSTANT 0
%vreg17(p0) = G_INTTOPTR %vreg16

reviewed by @aemerson.

llvm-svn: 328218

6 years ago[X86][Btver2] FMUL ymm instructions are double pumped on the JFPM functional pipe
Simon Pilgrim [Thu, 22 Mar 2018 17:25:38 +0000 (17:25 +0000)]
[X86][Btver2] FMUL ymm instructions are double pumped on the JFPM functional pipe

llvm-svn: 328217

6 years ago[ARM] Enable the full InstRW overlap check for ARMScheduleR52.td
Craig Topper [Thu, 22 Mar 2018 17:17:47 +0000 (17:17 +0000)]
[ARM] Enable the full InstRW overlap check for ARMScheduleR52.td

This fixes a few issues with the R52 instregexs to enable the full overlap checking

Differential Revision: https://reviews.llvm.org/D44767

llvm-svn: 328216

6 years agoMake the debug info in some tests more realistic.
Rafael Espindola [Thu, 22 Mar 2018 17:14:41 +0000 (17:14 +0000)]
Make the debug info in some tests more realistic.

Currently lld just parses the .debug_line section assuming that there
is only one compile unit. That assumption is false (PR36793).

I have a patch that changes lld to iterate over the compile units and
parse the portions of the .debug_line they point to (which fixes
PR36793).

A problem is that we will then need a compiler unit pointing to
.debug_line for lld to see it.

It seems like bfd has the same restriction.

This patch updates existing tests to add a minimal compile unit so
that they still work with PR36793 fixed.

llvm-svn: 328215

6 years ago[SimplifyCFG] Create attribute for fuzzing-specific optimizations.
Matt Morehouse [Thu, 22 Mar 2018 17:07:51 +0000 (17:07 +0000)]
[SimplifyCFG] Create attribute for fuzzing-specific optimizations.

Summary:
When building with libFuzzer, converting control flow to selects or
obscuring the original operands of CMPs reduces the effectiveness of
libFuzzer's heuristics.

This patch provides an attribute to disable or modify certain optimizations
for optimal fuzzing signal.

Provides a less aggressive alternative to https://reviews.llvm.org/D44057.

Reviewers: vitalybuka, davide, arsenm, hfinkel

Reviewed By: vitalybuka

Subscribers: junbuml, mehdi_amini, wdng, javed.absar, hiraditya, llvm-commits, kcc

Differential Revision: https://reviews.llvm.org/D44232

llvm-svn: 328214

6 years ago[CUDA] add REQUIRES fields for CUDA variants of LTO tests.
Artem Belevich [Thu, 22 Mar 2018 16:47:41 +0000 (16:47 +0000)]
[CUDA] add REQUIRES fields for CUDA variants of LTO tests.

Also relax checking for nvptx triple. This should avoid test failure if
the test is executed on 32-bit platform.

llvm-svn: 328213

6 years ago[DWARF] Add EmitDwarfOffset function, NFC.
Alexey Bataev [Thu, 22 Mar 2018 16:43:21 +0000 (16:43 +0000)]
[DWARF] Add EmitDwarfOffset function, NFC.

Added EmitDwarfOffset function after discussion with Eric Christofer.

llvm-svn: 328212

6 years agovim: rename `singlethread` to `syncscope`
Saleem Abdulrasool [Thu, 22 Mar 2018 16:39:54 +0000 (16:39 +0000)]
vim: rename `singlethread` to `syncscope`

SVN r307722 renamed the keyword from `singlethread` to `syncscope`.
Update the syntax file accordingly.

llvm-svn: 328211

6 years ago[LoopPredication] Add profitability check based on BPI
Anna Thomas [Thu, 22 Mar 2018 16:03:59 +0000 (16:03 +0000)]
[LoopPredication] Add profitability check based on BPI

Summary:
LoopPredication is not profitable when the loop is known to always exit
through some block other than the latch block.
A coarse grained latch check can cause loop predication to predicate the
loop, and unconditionally deoptimize.

However, without predicating the loop, the guard may never fail within the
loop during the dynamic execution because the non-latch loop termination
condition exits the loop before the latch condition causes the loop to
exit.
We teach LP about this using BranchProfileInfo pass.

Reviewers: apilipenko, skatkov, mkazantsev, reames

Reviewed by: skatkov

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D44667

llvm-svn: 328210

6 years agoMove MetaRenamer from Transforms/UTils to Transforms/IPO since it implements part...
David Blaikie [Thu, 22 Mar 2018 15:57:47 +0000 (15:57 +0000)]
Move MetaRenamer from Transforms/UTils to Transforms/IPO since it implements part of IPO.h

llvm-svn: 328209

6 years ago[DWARF] Fix mixing assembler -g with DWARF .file directives.
Paul Robinson [Thu, 22 Mar 2018 15:48:01 +0000 (15:48 +0000)]
[DWARF] Fix mixing assembler -g with DWARF .file directives.

We were effectively overriding an explicit '.file' directive with info
for the assembler source.  That shouldn't happen.

Fixes PR36636, really, even for .s files emitted by Clang.

Differential Revision: https://reviews.llvm.org/D44265

llvm-svn: 328208

6 years agoRevert "[InstrProf] Support for external functions in text format."
Benjamin Kramer [Thu, 22 Mar 2018 15:29:55 +0000 (15:29 +0000)]
Revert "[InstrProf] Support for external functions in text format."

This reverts commit r328132. Breaks FDO selfhost. I'm seeing
error: /tmp/profraw: Invalid instrumentation profile data (bad magic)

llvm-svn: 328207

6 years ago[CallSiteSplitting] Preserve DominatorTreeAnalysis.
Florian Hahn [Thu, 22 Mar 2018 15:23:33 +0000 (15:23 +0000)]
[CallSiteSplitting] Preserve DominatorTreeAnalysis.

The dominator tree analysis can be preserved easily.
Some other kinds of analysis can probably be preserved
too.

Reviewers: junbuml, dberlin

Reviewed By: dberlin

Differential Revision: https://reviews.llvm.org/D43173

llvm-svn: 328206

6 years ago[MC] fix documentation comments; NFC
Sanjay Patel [Thu, 22 Mar 2018 15:23:21 +0000 (15:23 +0000)]
[MC] fix documentation comments; NFC

llvm-svn: 328205

6 years ago[sanitizer] Split coverage into separate RT in sanitizer_common
Kostya Kortchinsky [Thu, 22 Mar 2018 15:04:31 +0000 (15:04 +0000)]
[sanitizer] Split coverage into separate RT in sanitizer_common

Summary:
`sanitizer_common`'s coverage support is fairly well separated, and libcdep by
default. Several sanitizers don't make use of coverage, and as far as I can
tell do no benefit from the extra dependencies pulled in by the coverage public
interface functions.

The following sanitizers call `InitializeCoverage` explicitely: MSan, ASan,
LSan, HWAsan, UBSan. On top of this, any sanitizer bundling RTUBSan should
add the coverage RT as well: ASan, Scudo, UBSan, CFI (diag), TSan, MSan, HWAsan.

So in the end the following have no need: DFSan, ESan, CFI, SafeStack (nolibc
anyway), XRay, and the upcoming Scudo minimal runtime.

I tested this with all the sanitizers check-* with gcc & clang, and in
standalone on Linux & Android, and there was no issue. I couldn't test this on
Mac, Fuchsia, BSDs, & Windows for lack of an environment, so adding a bunch of
people for additional scrunity. I couldn't test HWAsan either.

Reviewers: eugenis, vitalybuka, alekseyshl, flowerhack, kubamracek, dberris, rnk, krytarowski

Reviewed By: vitalybuka, alekseyshl, flowerhack, dberris

Subscribers: mgorny, delcypher, #sanitizers, llvm-commits

Differential Revision: https://reviews.llvm.org/D44701

llvm-svn: 328204

6 years ago[X86][SSE42] Use the default PCMPEST/PCMPIST scheduler classes directly. NFCI.
Simon Pilgrim [Thu, 22 Mar 2018 14:56:18 +0000 (14:56 +0000)]
[X86][SSE42] Use the default PCMPEST/PCMPIST scheduler classes directly. NFCI.

Models were completely overriding all SSE42 strins instructions when the default classes could be used for exactly the same coverage.

llvm-svn: 328203

6 years agoDWARFVerifier: verify debug_names abbreviation table
Pavel Labath [Thu, 22 Mar 2018 14:50:44 +0000 (14:50 +0000)]
DWARFVerifier: verify debug_names abbreviation table

Summary:
This commit adds checks of the abbreviation table in a DWARF v5 Name
Index. The most interesting/useful check is the one which checks that
each index attributes is encoded using the correct form class, but it
also checks for the more obvious errors like unknown
forms/tags/attributes and duplicated attributes.

Reviewers: JDevlieghere, aprantl, dblaikie

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D44736

llvm-svn: 328202

6 years agoclang-format: Narrow down raw string literal line break exception.
Daniel Jasper [Thu, 22 Mar 2018 14:43:54 +0000 (14:43 +0000)]
clang-format: Narrow down raw string literal line break exception.

For multiline raw string literals, we generally want to respect the
author's choice of linebreak before the 'R"(' as the rest of the raw
string might be aligned to it and we cannot (commonly) modify the
content.

For single-line raw string literals, this doesn't make any sense and so
we should just treat them as regular string literals in this regard.

llvm-svn: 328201

6 years agoclang-format: Fix SpacesInParentheses with fully qualified names.
Daniel Jasper [Thu, 22 Mar 2018 14:30:28 +0000 (14:30 +0000)]
clang-format: Fix SpacesInParentheses with fully qualified names.

When SpacesInParentheses is set to true clang-format does not add a
space before fully qualified names. For example:

  do_something(::globalVar );

Fix by Darby Payne. Thank you!

llvm-svn: 328200

6 years agoclang-tidy, modularize: return non-zero exit code on errors
Alexander Kornienko [Thu, 22 Mar 2018 14:18:20 +0000 (14:18 +0000)]
clang-tidy, modularize: return non-zero exit code on errors

When no inputs given, the tools should not only produce the help message, but
also return a non-zero exit code. Fixed tests accordingly.

llvm-svn: 328199

6 years ago[llvm-mca] Minor refactoring. NFCI
Andrea Di Biagio [Thu, 22 Mar 2018 14:14:49 +0000 (14:14 +0000)]
[llvm-mca] Minor refactoring. NFCI

Also, removed a couple of unused methods from class Instruction.

llvm-svn: 328198

6 years ago[InstCombine] add folds for xor-of-icmp signbit tests (PR36682)
Sanjay Patel [Thu, 22 Mar 2018 14:08:16 +0000 (14:08 +0000)]
[InstCombine] add folds for xor-of-icmp signbit tests (PR36682)

This is a retry of r328119 which was reverted at r328145 because
it could crash by trying to combine icmps with different operand
types. This version has a check for that and additional tests.

Original commit message:

This is part of solving:
https://bugs.llvm.org/show_bug.cgi?id=36682

There's also a leftover improvement from the long-ago-closed:
https://bugs.llvm.org/show_bug.cgi?id=5438

https://rise4fun.com/Alive/dC1

llvm-svn: 328197

6 years ago[CodeGen] Emit DWARF "constructor" calling convention
Jonas Devlieghere [Thu, 22 Mar 2018 13:53:30 +0000 (13:53 +0000)]
[CodeGen] Emit DWARF "constructor" calling convention

Now that LLVM has support for emitting calling conventions in DWARF (see
r328191) have clang emit them.

Patch by: Adrien Guinet

Differential revision: https://reviews.llvm.org/D42351

llvm-svn: 328196

6 years ago[ELF] - Apply clang-format. NFC.
George Rimar [Thu, 22 Mar 2018 13:47:56 +0000 (13:47 +0000)]
[ELF] - Apply clang-format. NFC.

llvm-svn: 328195

6 years ago[X86][CLMUL] Use the default CLMUL scheduler classes directly. NFCI.
Simon Pilgrim [Thu, 22 Mar 2018 13:37:30 +0000 (13:37 +0000)]
[X86][CLMUL] Use the default CLMUL scheduler classes directly. NFCI.

Models were completely overriding all CLMUL instructions when the WriteCLMUL default classes could be used for exactly the same coverage.

llvm-svn: 328194

6 years ago[X86][CLMUL] Fix/add missing itinerary tags to (V)PCLMULQDQ instructions
Simon Pilgrim [Thu, 22 Mar 2018 13:36:06 +0000 (13:36 +0000)]
[X86][CLMUL] Fix/add missing itinerary tags to (V)PCLMULQDQ instructions

PCLMULQDQrm was using the rr itinerary.

Difference in itineraries between PCLMULQDQ/VPCLMULQDQ variants was causing an unnecessary duplication of scheduler class entries.

llvm-svn: 328193

6 years ago[X86] Use the default AES scheduler classes directly. NFCI.
Simon Pilgrim [Thu, 22 Mar 2018 13:18:08 +0000 (13:18 +0000)]
[X86] Use the default AES scheduler classes directly. NFCI.

Models were completely overriding all AES instructions when the WriteAES default classes could be used for exactly the same coverage.

Removes 6 unnecessary scheduler classes from every model.

Note: Still looking for a way for tblgen to warn when this is happening - often the override is more complete than the default.
llvm-svn: 328192

6 years agoAdd vendor specific calling convention to DWARF
Jonas Devlieghere [Thu, 22 Mar 2018 12:24:07 +0000 (12:24 +0000)]
Add vendor specific calling convention to DWARF

This patch adds LLVM's and GCC's calling conventions so they can be
emitted in the DWARF debug info.

Patch by: Adrien Guinet

Differential revision: https://reviews.llvm.org/D42350

llvm-svn: 328191

6 years ago[llvm-mca] Simplify (and better standardize) the Instruction interface.
Andrea Di Biagio [Thu, 22 Mar 2018 11:39:34 +0000 (11:39 +0000)]
[llvm-mca] Simplify (and better standardize) the Instruction interface.

llvm-svn: 328190

6 years ago[CloneFunction] Preserve DT in DuplicateInstructionsInSplitBetween.
Florian Hahn [Thu, 22 Mar 2018 11:38:53 +0000 (11:38 +0000)]
[CloneFunction] Preserve DT in DuplicateInstructionsInSplitBetween.

DuplicateInstructionsInSplitBetween can preserve the DT by passing
through DT to SplitEdge.

Reviewers: sanjoy, junbuml, anna, kuhar

Reviewed By: kuhar

Differential Revision: https://reviews.llvm.org/D44629

llvm-svn: 328189

6 years agoRevert "[test] Add tests for llc passes pipelines."
Jonas Devlieghere [Thu, 22 Mar 2018 10:34:06 +0000 (10:34 +0000)]
Revert "[test] Add tests for llc passes pipelines."

This reverts r328159 because the two AArch64 tests fail on GreenDragon:
http://green.lab.llvm.org/green/job/clang-stage1-cmake-RA-expensive/11030/

llvm-svn: 328188

6 years ago[llvm-mca] Simplify code. NFC
Andrea Di Biagio [Thu, 22 Mar 2018 10:19:20 +0000 (10:19 +0000)]
[llvm-mca] Simplify code. NFC

llvm-svn: 328187

6 years agocommit temporary workaround for new Clang exception warning
Eric Fiselier [Thu, 22 Mar 2018 07:53:47 +0000 (07:53 +0000)]
commit temporary workaround for new Clang exception warning

llvm-svn: 328186

6 years agoCorrect TEST_HAS_NO_ALIGNED_ALLOCATION macro definition
Eric Fiselier [Thu, 22 Mar 2018 06:21:07 +0000 (06:21 +0000)]
Correct TEST_HAS_NO_ALIGNED_ALLOCATION macro definition

llvm-svn: 328185

6 years ago[TableGen] Use empty emplace_back to add defaulted constructed objects to vectors...
Craig Topper [Thu, 22 Mar 2018 06:15:10 +0000 (06:15 +0000)]
[TableGen] Use empty emplace_back to add defaulted constructed objects to vectors to avoid using resize(size()+1). NFC

llvm-svn: 328184

6 years ago[TableGen] Add a non-default constructor to CodeGenSchedClass and use it via emplace_...
Craig Topper [Thu, 22 Mar 2018 06:15:08 +0000 (06:15 +0000)]
[TableGen] Add a non-default constructor to CodeGenSchedClass and use it via emplace_back to create new SchedClasses instead of using resize(size+1)

llvm-svn: 328183

6 years agoFix dynarray test failures after changing __libcpp_allocate/deallocate
Eric Fiselier [Thu, 22 Mar 2018 05:44:48 +0000 (05:44 +0000)]
Fix dynarray test failures after changing __libcpp_allocate/deallocate

llvm-svn: 328182

6 years ago[X86] Remove unused SchedWriteRes classes. NFC
Craig Topper [Thu, 22 Mar 2018 04:52:08 +0000 (04:52 +0000)]
[X86] Remove unused SchedWriteRes classes. NFC

llvm-svn: 328181

6 years agoFix PR22634 - std::allocator doesn't respect over-aligned types.
Eric Fiselier [Thu, 22 Mar 2018 04:42:56 +0000 (04:42 +0000)]
Fix PR22634 - std::allocator doesn't respect over-aligned types.

This patch fixes std::allocator, and more specifically, all users
of __libcpp_allocate and __libcpp_deallocate, to support over-aligned
types.

__libcpp_allocate/deallocate now take an alignment parameter, and when
the specified alignment is greater than that supported by malloc/new,
the aligned version of operator new is called (assuming it's available).

When aligned new isn't available, the old behavior has been kept, and the
alignment parameter is ignored.

This patch depends on recent changes to __builtin_operator_new/delete which
allow them to be used to call any regular new/delete operator. By using
__builtin_operator_new/delete when possible, the new/delete erasure optimization
is maintained.

llvm-svn: 328180

6 years ago[X86][Skylake] Merge multiple InstrRW entries that map to the same SchedWriteRes...
Craig Topper [Thu, 22 Mar 2018 04:23:41 +0000 (04:23 +0000)]
[X86][Skylake] Merge multiple InstrRW entries that map to the same SchedWriteRes group (NFCI) (PR35955)

I've also merged some VEX/non-VEX instregex strings with a (V?) prefix or (Y?) ymm variant - there are still a lot more of these to do.

This reduces the size of the optimized llc binary on my computer by 400K. Presumably because we went from 5000+ scheduler classes per CPU to ~2000.

llvm-svn: 328179

6 years ago[DIA] Add IPDBSectionContrib interfaces and DIA implementation
Aaron Smith [Thu, 22 Mar 2018 04:08:15 +0000 (04:08 +0000)]
[DIA] Add IPDBSectionContrib interfaces and DIA implementation

To resolve symbol context at a particular address, we need to
determine the compiland for the address. We are able to determine
the parent compiland of PDBSymbolFunc, PDBSymbolTypeUDT,
PDBSymbolTypeEnum symbols indirectly through line information.
However no such information is availabile for PDBSymbolData,
i.e. variables.

The Section Contribution table from PDBs has information about
each compiland's contribution to sections by address. For example,
a piece of a contribution looks like,

  VA         RelativeVA  Sect No.  Offset    Length    Compiland
  14000087B0 000087B0    0001      000077B0  000000BB  exe_main.obj

So given an address, it's possible to determine its compiland with
this information.

llvm-svn: 328178

6 years ago[PDB] Get more DIA table enumerators
Aaron Smith [Thu, 22 Mar 2018 03:57:06 +0000 (03:57 +0000)]
[PDB] Get more DIA table enumerators

Rename the original function and make it a static template.

llvm-svn: 328177

6 years ago[SymbolFilePDB] Run clang-format; NFC
Aaron Smith [Thu, 22 Mar 2018 03:44:51 +0000 (03:44 +0000)]
[SymbolFilePDB] Run clang-format; NFC

llvm-svn: 328176

6 years ago[clang-format] Add a few more Core Graphics identifiers to ObjC heuristic
Ben Hamilton [Thu, 22 Mar 2018 03:25:22 +0000 (03:25 +0000)]
[clang-format] Add a few more Core Graphics identifiers to ObjC heuristic

Summary:
We received reports of the Objective-C style guesser getting a false
negative on header files like:

CGSize SizeOfThing(MyThing thing);

This adds more Core Graphics identifiers to the Objective-C style
guesser.

Test Plan: New tests added. Ran tests with:
  % make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: jolesiak, djasper

Reviewed By: jolesiak, djasper

Subscribers: krasimir, klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44632

llvm-svn: 328175

6 years ago[clang-format] Don't insert space between r_paren and 'new' in ObjC decl
Ben Hamilton [Thu, 22 Mar 2018 03:23:53 +0000 (03:23 +0000)]
[clang-format] Don't insert space between r_paren and 'new' in ObjC decl

Summary:
Previously, clang-format would insert a space between
the closing parenthesis and 'new' in the following valid Objective-C
declaration:

  + (instancetype)new;

This was because 'new' is treated as a keyword, not an identifier.

TokenAnnotator::spaceRequiredBefore() already handled the case where
r_paren came before an identifier, so this diff extends it to
handle r_paren before 'new'.

Test Plan: New tests added. Ran tests with:
  % make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: djasper, jolesiak, stephanemoore

Reviewed By: djasper, jolesiak, stephanemoore

Subscribers: stephanemoore, klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D44692

llvm-svn: 328174

6 years agoImprove -Winfinite-recursion
Robert Widmann [Thu, 22 Mar 2018 03:16:23 +0000 (03:16 +0000)]
Improve -Winfinite-recursion

Summary: Rewrites -Winfinite-recursion to remove the state dictionary and explore paths in loops - especially infinite loops.  The new check now detects recursion in loop bodies dominated by a recursive call.

Reviewers: rsmith, rtrieu

Reviewed By: rtrieu

Subscribers: lebedev.ri, cfe-commits

Differential Revision: https://reviews.llvm.org/D43737

llvm-svn: 328173

6 years agoRevert "[clang-doc] Reland "[clang-doc] Setup clang-doc frontend framework""
Julie Hockett [Thu, 22 Mar 2018 02:05:51 +0000 (02:05 +0000)]
Revert "[clang-doc] Reland "[clang-doc] Setup clang-doc frontend framework""

This reverts commit r328150 until we can fix the test that are failing
on the Windows release build.

llvm-svn: 328172

6 years ago[Frontend] Fix some Clang-tidy modernize and Include What You Use warnings; other...
Eugene Zelenko [Thu, 22 Mar 2018 00:53:26 +0000 (00:53 +0000)]
[Frontend] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).

llvm-svn: 328171

6 years agovim: add `dso_local` and `dso_preemptable` keywords
Saleem Abdulrasool [Wed, 21 Mar 2018 23:46:09 +0000 (23:46 +0000)]
vim: add `dso_local` and `dso_preemptable` keywords

Support the new keywords introduced in SVN r316668.

llvm-svn: 328170

6 years agoUpdate for LLVM header movement
David Blaikie [Wed, 21 Mar 2018 23:21:10 +0000 (23:21 +0000)]
Update for LLVM header movement

llvm-svn: 328169

6 years agoMake test a bit less strict. NFC.
Rafael Espindola [Wed, 21 Mar 2018 23:01:10 +0000 (23:01 +0000)]
Make test a bit less strict. NFC.

llvm-svn: 328168

6 years ago[test] Try to unbreak hexagon bots after r328160.
Michael Zolotukhin [Wed, 21 Mar 2018 22:57:33 +0000 (22:57 +0000)]
[test] Try to unbreak hexagon bots after r328160.

llvm-svn: 328167

6 years agoFix for LLVM change (Transforms/Utils/Local.h -> Analysis/Utils/Local.h)
David Blaikie [Wed, 21 Mar 2018 22:34:27 +0000 (22:34 +0000)]
Fix for LLVM change (Transforms/Utils/Local.h -> Analysis/Utils/Local.h)

llvm-svn: 328166

6 years agoFix a couple of layering violations in Transforms
David Blaikie [Wed, 21 Mar 2018 22:34:23 +0000 (22:34 +0000)]
Fix a couple of layering violations in Transforms

Remove #include of Transforms/Scalar.h from Transform/Utils to fix layering.

Transforms depends on Transforms/Utils, not the other way around. So
remove the header and the "createStripGCRelocatesPass" function
declaration (& definition) that is unused and motivated this dependency.

Move Transforms/Utils/Local.h into Analysis because it's used by
Analysis/MemoryBuiltins.cpp.

llvm-svn: 328165

6 years agoReplace a std::pair with a struct.
Rafael Espindola [Wed, 21 Mar 2018 22:32:17 +0000 (22:32 +0000)]
Replace a std::pair with a struct.

This is more readable and should reduce the noise in a followup patch.

llvm-svn: 328164

6 years ago[InstrProf] Encapsulates access to AddrToMD5Map.
Mircea Trofin [Wed, 21 Mar 2018 22:27:31 +0000 (22:27 +0000)]
[InstrProf] Encapsulates access to AddrToMD5Map.

Summary:
This fixes a unittest failure introduced by D44717

D44717 introduced lazy sorting of the internal data structures of the
symbol table. The AddrToMD5Map getter was potentially exposing
inconsistent (unsorted) state. We could sort in the accessor, however,
a client may store the pointer and thus bypass the internal state
management of the symbol table. The alternative in this CL blocks
direct access to the state, thus ensuring consistent
externally-observable state.

Reviewers: davidxl, xur, eraman

Reviewed By: xur

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D44757

llvm-svn: 328163

6 years ago[PDB] Don't ignore bucket 0 when writing the PDB string table.
Zachary Turner [Wed, 21 Mar 2018 22:23:59 +0000 (22:23 +0000)]
[PDB] Don't ignore bucket 0 when writing the PDB string table.

The hash table is a list of buckets, and the *value* stored in
the bucket cannot be 0 since that is reserved.  However, the code
here was incorrectly skipping over the 0'th bucket entirely.
The 0'th bucket is perfectly fine, just none of these buckets
can contain the value 0.

As a result, whenever there was a string where hash(S) % Size
was equal to 0, we would write the value in the next bucket
instead.  We never caught this in our tests due to *another*
bug, which is that we would iterate the entire list of buckets
looking for the value, only using the hash value as a starting
point.  However, the real algorithm stops when it finds 0 in
a bucket since it takes that to mean "the item is not in the
hash table".

The unit test is updated to carefully construct a set of hash
values that will cause one item to hash to 0 mod bucket count,
and the reader is also updated to return an error indicating that
the item is not found when it encounters a 0 bucket.

llvm-svn: 328162

6 years ago[CUDA] Disable LTO for device-side compilations.
Artem Belevich [Wed, 21 Mar 2018 22:22:59 +0000 (22:22 +0000)]
[CUDA] Disable LTO for device-side compilations.

This fixes host-side LTO during CUDA compilation. Before, LTO
pipeline construction was clashing with CUDA pipeline construction.

At the moment there's no point doing LTO on device side as each
device-side TU is a complete program.  We will need to figure out
compilation pipeline construction for the device-side LTO when we
have working support for multi-TU device-side CUDA compilation.

Differential Revision: https://reviews.llvm.org/D44691

llvm-svn: 328161

6 years ago[test] Add tests for opt passes pipelines for O0, O2, O3, and Os.
Michael Zolotukhin [Wed, 21 Mar 2018 22:17:31 +0000 (22:17 +0000)]
[test] Add tests for opt passes pipelines for O0, O2, O3, and Os.

llvm-svn: 328160

6 years ago[test] Add tests for llc passes pipelines.
Michael Zolotukhin [Wed, 21 Mar 2018 22:17:13 +0000 (22:17 +0000)]
[test] Add tests for llc passes pipelines.

This is basically an extension of existing test
test/CodeGen/X86/O0-pipeline.ll introduced in r302608.

llvm-svn: 328159

6 years ago[NVPTX] Make tensor shape part of WMMA intrinsic's name.
Artem Belevich [Wed, 21 Mar 2018 21:55:02 +0000 (21:55 +0000)]
[NVPTX] Make tensor shape part of WMMA intrinsic's name.

This is needed for the upcoming implementation of the
new 8x32x16 and 32x8x16 variants of WMMA instructions
introduced in CUDA 9.1.

Differential Revision: https://reviews.llvm.org/D44719

llvm-svn: 328158

6 years ago[llvm-profdata] Use "-o /dev/null" in invalid-profdata.test
Reid Kleckner [Wed, 21 Mar 2018 21:51:53 +0000 (21:51 +0000)]
[llvm-profdata] Use "-o /dev/null" in invalid-profdata.test

Lit automatically rewrites /dev/null to a temp file on Windows.

llvm-svn: 328157

6 years ago[PDB] Remove unused private variable, re-applying r327900 after relanding more natvis...
Reid Kleckner [Wed, 21 Mar 2018 21:47:26 +0000 (21:47 +0000)]
[PDB] Remove unused private variable, re-applying r327900 after relanding more natvis changes[4~

llvm-svn: 328156

6 years ago[WebAssembly] Really disable wasm register name matcher
Reid Kleckner [Wed, 21 Mar 2018 21:46:47 +0000 (21:46 +0000)]
[WebAssembly] Really disable wasm register name matcher

The "ShouldEmitMatchRegisterName" bit wasn't taking effect because the
WebAssembly target didn't point to the custom WebAssemblyAsmParser
record.

llvm-svn: 328155

6 years agoHandle abbr_offset with relocations.
Rafael Espindola [Wed, 21 Mar 2018 21:31:25 +0000 (21:31 +0000)]
Handle abbr_offset with relocations.

This is mostly just plumbing to get a DWARFDataExtractor where we
compute abbr_offset so we can use getRelocatedValue.

This is part of PR36793.

llvm-svn: 328154

6 years ago[Modules] Fix creating fake definition data for lambdas.
Volodymyr Sapsai [Wed, 21 Mar 2018 21:28:54 +0000 (21:28 +0000)]
[Modules] Fix creating fake definition data for lambdas.

During reading C++ definition data for lambda we can access
CXXRecordDecl representing lambda before we finished reading the
definition data. This can happen by reading a captured variable which is
VarDecl, then reading its decl context which is CXXMethodDecl `operator()`,
then trying to merge redeclarable methods and accessing
enclosing CXXRecordDecl. The call stack looks roughly like

    VisitCXXRecordDecl
      ReadCXXRecordDefinition
        VisitVarDecl
          VisitCXXMethodDecl
            mergeRedeclarable
              getPrimaryContextForMerging

If we add fake definition data at this point, later we'll hit the assertion

    Assertion failed: (!DD.IsLambda && !MergeDD.IsLambda && "faked up lambda definition?"), function MergeDefinitionData, file clang/lib/Serialization/ASTReaderDecl.cpp, line 1675.

The fix is to assign definition data before reading it. Fixes PR32556.

rdar://problem/37461072

Reviewers: rsmith, bruno

Reviewed By: rsmith

Subscribers: cfe-commits, jkorous-apple, aprantl

Differential Revision: https://reviews.llvm.org/D43494

llvm-svn: 328153

6 years ago[InstCombine] move/add tests for fmul distribution; NFC
Sanjay Patel [Wed, 21 Mar 2018 21:28:19 +0000 (21:28 +0000)]
[InstCombine] move/add tests for fmul distribution; NFC

There are at least 3 problems:
1. We're distributing across large patterns, but fail to do that for the minimal patterns.
2. We're not checking uses, so we may create more instructions than we eliminate.
3. We should be able to do these transforms with less than full 'fast' fmuls.

llvm-svn: 328152

6 years agoMmap interceptor new option, Write Exec runtime detector
Vitaly Buka [Wed, 21 Mar 2018 21:25:07 +0000 (21:25 +0000)]
Mmap interceptor new option, Write Exec runtime detector

Summary:
Following-up the refactoring of mmap interceptors, adding a new common
option to detect PROT_WRITE|PROT_EXEC pages request.

Patch by David CARLIER

Reviewers: vitalybuka, vsk

Reviewed By: vitalybuka

Subscribers: krytarowski, #sanitizers

Differential Revision: https://reviews.llvm.org/D44194

llvm-svn: 328151