NFC

llvm-svn: 330631

Reland r329956, "AArch64: Introduce a DAG combine for folding offsets into addresses.", with a fix for the bot failure.

This reland includes a check to prevent the DAG combiner from folding an
offset that is smaller than the existing one. This can cause oscillations
between two possible DAGs, which was the cause of the hang and later assertion
failure observed on the lnt-ctmark-aarch64-O3-flto bot.
http://green.lab.llvm.org/green/job/lnt-ctmark-aarch64-O3-flto/2024/

Original commit message:
> This is a code size win in code that takes offseted addresses
> frequently, such as C++ constructors that typically need to compute
> an offseted address of a vtable. This reduces the size of Chromium
> for Android's .text section by 108KB.

Differential Revision: https://reviews.llvm.org/D45199

llvm-svn: 330630

Summary:
This change teaches DSE that the atomic memory intrinsics are stores
that can be eliminated, and can allow other stores to be eliminated.
This change specifically does not teach DSE that these intrinsics
can be partially eliminated (i.e. length reduced, and dest/src changed);
that will be handled in another change.

Reviewers: mkazantsev, skatkov, apilipenko, efriedma, rsmith

Reviewed By: efriedma

Subscribers: dmgreen, llvm-commits

Differential Revision: https://reviews.llvm.org/D45535

llvm-svn: 330629

llvm-svn: 330628

Summary:
The patch includes all declarations, and also implements the following features:
* ABI.
* narrowing-conversion related SFIANE, including simd<> ctors and (static_)simd_cast.

Reviewers: mclow.lists, EricWF

Subscribers: lichray, sanjoy, MaskRay, cfe-commits

Differential Revision: https://reviews.llvm.org/D41148

llvm-svn: 330627

specialization without -fms-extensions.

llvm-svn: 330626

This patch adds a cost model test case for vector shuffles having transpose
masks. The given costs are inaccurate and will be updated in a follow-on patch.

llvm-svn: 330625

Retire the fixed shadow memory mapping to avoid conflicts with default
process memory mapping (currently manifests on Android).

Tests on AArch64 show <1% performance loss and code size increase,
making it possible to use dynamic shadow memory by default.

Keep the fixed shadow memory mapping around to be able to run
performance comparison tests later.

Re-commiting D45847 with fixed shadow for x86-64.

llvm-svn: 330624

For now switch back to fixed shadow mapping for x86-64 due to the issues
with IFUNC linking on older binutils. More details will be added to
https://bugs.chromium.org/p/chromium/issues/detail?id=835864

Differential Revision: https://reviews.llvm.org/D45840

llvm-svn: 330623

Some buildbots seems to have problems with the CHECKs in
test/Frontend/ftime-report-template-decl.cpp.

I this the problem is that the order in which timers are printed
is based on consumed wall time. So there is no guarantee in which
order the timers are printed.

This patch uses CHECK-DAG instead of CHECK to make the test
case less sensitive to the actual time used by the different
passes.

The (sometimes) failing test cases where introduced in trunk@330571.

llvm-svn: 330622

This demonstrates a bug where the encoding for a 16-bit bswap prints a 16-bit register and a 32-bit mnemonic. Intel docs say 16-bit bswap is undefined. We should either claim it as an invalid encoding or we should print a 16-bit mnemonic.

objdump does print the encoding as bswap with a 16-bit register. But it doesn't seem to ever print a suffix.

llvm-svn: 330621

NVPTX target.

When generating the wrapper function for the offloading region, we need
to call the outlined function and cast the arguments correctly to follow
the ABI. Usually, variables captured by value are casted to `uintptr_t`
type. But this should not performed for the variables with pointer type.

llvm-svn: 330620

This commit causes internal errors with ld.bfd 2.24. My guess is that
the ifunc usage in this commit is causing problems. This is the default
system linker on Trusty Tahr, which is from 2014. I claim it's still in
our support window. Maybe we will decide to drop support for it, but
let's get the bots green while we do the investigation and have that
discussion.

Discovered here: https://crbug.com/835864

llvm-svn: 330619

This helps debug issues where selection-dag assigns the wrong location
to an instruction.

Differential Revision: https://reviews.llvm.org/D45913

llvm-svn: 330618

llvm-svn: 330617

The profile library was missing some includes and was erroneously using
ftruncate. WinASan was using `= {0}` to initialize structs, which
creates -Wmissing-field-initializers and -Wmissing-braces warnings with
clang. Use `= {}` instead, since this is C++.

llvm-svn: 330616

Only add support for getSchedInfoStr(const MachineInstr &MI) at the TargetSubtargetInfo level.

Really, the getSchedInfoStr calls need to be removed entirely, we should just return a latency/rthroughput through the subtarget and keep a string creation helper function somewhere else.

llvm-svn: 330615

llvm-svn: 330614

llvm-svn: 330613

It's possible to validly spill the frame offset register
in a call sequence to a VGPR. There are definitely issues
with SGPR spilling to memory, so move the assert later.

llvm-svn: 330612

llvm-svn: 330611

We use llvm-symbolizer in some production systems, and we run it
against all possibly related files, including some that are not
ELF. We noticed that for some of those invalid files, llvm-symbolizer
would crash with SEGFAULT. Here is an example of such a file.

It is due to that in computeSymbolSizes, a loop uses condition

  for (unsigned I = 0, N = Addresses.size() - 1; I < N; ++I) {

where if Addresses.size() is 0, N would overflow and causing the loop
to access invalid memory.

Instead of patching the loop conditions, the commit makes so that the
function returns early if Addresses is empty.

Validated by checking that llvm-symbolizer no longer crashes.

Patch by Teng Qin!

Differential Revision: https://reviews.llvm.org/D44285

llvm-svn: 330610

Empty line shouldn't be considered a delimiter

Differential Revision: https://reviews.llvm.org/D45764

llvm-svn: 330609

Request in delimited input ended by EOF shouldn't be an error state.
Comments at the end of test file shouldn't be logged as an error state.
Input mirroring should work for the last request in delimited test file.

llvm-svn: 330608

Also assert that it is correct for SGPRs. There is currently a bug
where stack slot coloring replaces SGPR spill FIs with one with
the default ID, which results in a more confusing assert later
about a dead object.

llvm-svn: 330607

llvm-svn: 330606

Printing of ConcreteInts with size >64 bits resulted in assertion failure
in get[Z|S]ExtValue() because these methods are only allowed to be used
with integers of 64 max bit width. This patch fixes the issue.

llvm-svn: 330605

llvm-svn: 330604

Summary:
This just refactors the lowering of the atomic memory intrinsics to more
closely match the code patterns used in the lowering of the non-atomic
memory intrinsics. Specifically, we encapsulate the lowering in
SelectionDAG::getAtomicMem*() functions rather than embedding
the code directly in the SelectionDAGBuilder code.

llvm-svn: 330603

C++ is weird.

llvm-svn: 330602

llvm-svn: 330601

The PPC64 V2 ABI restores the toc base by loading from an offset of 24 from r1.
This patch fixes the offset and updates the testcases from V1 to V2. It also
issues an error when a nop is missing after a call to an external function.

Differential Revision: https://reviews.llvm.org/D45892

llvm-svn: 330600

llvm-svn: 330599

Summary:
    Fuchsia uses zx_system_get_features in lieu of getauxval.
    
    Use this call when checking for CRC32 support.

Reviewers: cryptoad

Reviewed By: cryptoad

Subscribers: delcypher, llvm-commits, #sanitizers, kristof.beyls, chrib

Differential Revision: https://reviews.llvm.org/D45896

llvm-svn: 330598

llvm-svn: 330597

Summary: `TaintBugVisitor` is a universal visitor, and many checkers rely on it, such as `ArrayBoundCheckerV2.cpp`, `DivZeroChecker.cpp` and `VLASizeChecker.cpp`. Moving `TaintBugVisitor` to `BugReporterVisitors.h` enables other checker can also track where `tainted` value came from.

Reviewers: NoQ, george.karpenkov, xazax.hun

Reviewed By: george.karpenkov

Subscribers: szepet, rnkovacs, a.sidorin, cfe-commits, MTC

Differential Revision: https://reviews.llvm.org/D45682

llvm-svn: 330596

There is no ownership here, passing a shared_ptr just adds confusion. No
functionality change intended.

llvm-svn: 330595

Summary: Move Go bindings for subranges and DINode arrays.

Reviewers: harlanhaskins, whitequark, deadalnix

Reviewed By: whitequark

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D45933

llvm-svn: 330594

llvm-svn: 330593

variables, NFC.

llvm-svn: 330592