Transforms: Introduce Transforms/Utils.h rather than spreading the declarations amongst Scalar.h and IPO.h

Fixes layering - Transforms/Utils shouldn't depend on including a Scalar
or IPO header, because Scalar and IPO depend on Utils.

llvm-svn: 328717

This allows syntax like:
$ llvm-ar -c -r -u file.a file.o

This is in addition to the other formats that are already supported:
$ llvm-ar cru file.a file.o
$ llvm-ar -cru file.a file.o

Patch by Tom Anderson!

Differential Revision: https://reviews.llvm.org/D44452

llvm-svn: 328716

For some reason on one of our bots subprocess wasn't already
imported. Do so explicitly.

llvm-svn: 328715

llvm-svn: 328714

See bug 36833: https://bugs.llvm.org/show_bug.cgi?id=36833

Differential Revision: https://reviews.llvm.org/D44779

Reviewers: arsenm, artem.tamazov, timcorringham
llvm-svn: 328713

Summary:
The "previous definition is here" note is not helpful if there is no location information. The note will reference nothing in such a case. This patch first checks to see if there is location data, and if so the note diagnostic is emitted.

This fixes PR15409.  The issue in the first comment seems to already be resolved. This patch addresses the second example.

Reviewers: bruno, rsmith

Reviewed By: bruno

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D44901

llvm-svn: 328712

This should get the builders green again while I investigate why r328706 was
insufficient.

llvm-svn: 328711

See bug 36834: https://bugs.llvm.org/show_bug.cgi?id=36834

Differential Revision: https://reviews.llvm.org/D44795

Reviewers: artem.tamazov, arsenm, timcorringham, nhaehnle
llvm-svn: 328710

Summary:
There aren't any matchers for the three vector operations: insertelement, extractelement, and
shufflevector. This patch adds them as well as corresponding unit tests.

llvm-svn: 328709

llvm-svn: 328708

See bug 36835: https://bugs.llvm.org/show_bug.cgi?id=36835

Differential Revision: https://reviews.llvm.org/D44825

Reviewers: artem.tamazov, arsenm, timcorringham
llvm-svn: 328707

This check prevents the ORC execution tests from running on Windows (which is
not supported yet).

This should fix the windows bots.

llvm-svn: 328706

When the declare target variables are emitted for the device,
constructors|destructors for these variables must emitted and registered
by the runtime in the offloading sections.

llvm-svn: 328705

See bug 36836: https://bugs.llvm.org/show_bug.cgi?id=36836

Differential Revision: https://reviews.llvm.org/D44832

Reviewers: artem.tamazov, arsenm, timcorringham
llvm-svn: 328704

This reverts commit 771829b640a5494ab65c810dd6b4330522bf3a33 (rr328598)

Hopefully the test will now pass on the bots.

rdar://problem/38774530

llvm-svn: 328703

The `shtest-timeout.py` test was failing intermittently. It looks like
the issue is that on a resource constrained system lit is unable to run
`quick_then_slow.py` twice and print out the messages the tests expects
within the one second timeout.

The underlying issue is that the test is dependent on the performance of
the host machine is a rather fragile way. This is due to hardcoding
timeout values and having assumptions that the host machine is able to
perform a certain amount of work within the hardcoded timeout values.

We could increase the timeout values but that doesn't really fix the
underlying issue. Instead this patch removes one of fragile assumptions
in the hope that this will be enough to fix the bots.
There are other fragile assumptions in this test (e.g. `quick.py` can be
executed in less than 1 second). If the bots continue to fail we'll have
to revisit this.

rdar://problem/38774530

llvm-svn: 328702

Renamed JWriteFPAY22 to JWriteFCmpY - we've tended to avoid latency based names

llvm-svn: 328701

This addresses a late review comment from D44427/rLLD328643

llvm-svn: 328700

This reverts commit r328676.

Commit r328676 broke the -no-integrated-as flag necessary to build Linux kernel with Clang:

$ cat t.c
void foo() {}
$ clang -no-integrated-as   -c  t.c -g
/tmp/t-dcdec5.s: Assembler messages:
/tmp/t-dcdec5.s:8: Error: file number less than one
clang-7.0: error: assembler command failed with exit code 1 (use -v to see invocation)

llvm-svn: 328699

Similar to r328694. The number of micro opcodes should be 2 for those
instructions.

This was found when testing AVX code for BtVer2 using llvm-mca.

llvm-svn: 328698

This is a step towards the upcoming KMSAN implementation patch.
KMSAN is going to prepend a special basic block containing
tool-specific calls to each function. Because we still want to
instrument the original entry block, we'll need to store it in
ActualFnStart.

For MSan this will still be F.getEntryBlock(), whereas for KMSAN
it'll contain the second BB.

llvm-svn: 328697

Sample for the OVERLAY command from the spec 
(https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/4/html/Using_ld_the_GNU_Linker/sections.html)
uses MAX command that we do not support currently:

. = 0x1000 + MAX (SIZEOF (.text0), SIZEOF (.text1));

This patch implements support for MIN and MAX.

Differential revision: https://reviews.llvm.org/D44734

llvm-svn: 328696

This reverts commit 0daf86291d3aa04d3cc280cd0ef24abdb0174981.

It was causing an assert in test/CodeGen/AMDGPU/amdpal.ll only on a
release-with-asserts build. I will resubmit the change when I have fixed
that.

Change-Id: If270594eba27a7dc4076bdeab3fa8e6bfda3288a
llvm-svn: 328695

The Jaguar backend natively supports 128-bit data types. Operations on YMM
registers are split into two COPs (complex operations). Each COP consumes a slot
in the dispatch group, and in the reorder buffer.

The scheduling model for Jaguar should mark those instructions as `let
NumMicroOps = 2`.

This was found when testing AVX code for BtVer2 using llvm-mca.

llvm-svn: 328694

Summary:
We've had a mismatch in the checksum computation between the sender and
receiver. The sender computed the payload checksum using the wire
encoding of the packet, while the receiver did this after expanding
un-escaping and expanding run-length-encoded sequences. This resulted in
communication breakdown if packets using these feature were sent in the
ack mode.

Normally, this did not cause any issues since the only packet we send in
the ack-mode is the QStartNoAckMode packet, but I ran into this when
debugging the lldb-server tests which (for better or worse) don't use
this mode.

According to the gdb-remote documentation "The two-digit checksum is computed as
the modulo 256 sum of all characters between the leading ‘$’ and the
trailing ‘#’", it seems that our sender is doing the right thing here.
Therefore, I fix the receiver the match the sender behavior and add a
test.

With this bug fixed, we can see that lldb-server is sending a stop-reply
after receiving the "k" in the same way as debugserver does (but we
weren't detecting this because at that point the connection was dead
already). I fix that expectation as well.

Reviewers: clayborg, jasonmolenda

Subscribers: mgorny, lldb-commits

Differential Revision: https://reviews.llvm.org/D44922

llvm-svn: 328693

This is a step towards the upcoming KMSAN implementation patch.
The isStore argument is to be used by getShadowOriginPtrKernel(),
it is ignored by getShadowOriginPtrUserspace().

Depending on whether a memory access is a load or a store, KMSAN
instruments it with different functions, __msan_metadata_ptr_for_load_X()
and __msan_metadata_ptr_for_store_X().

Those functions may return different values for a single address,
which is necessary in the case the runtime library decides to ignore
particular accesses.

llvm-svn: 328692

Follow up patch of r328313 to support the UseVMOVSR constraint. Removed
some unneeded instructions from the test and removed some stray
comments.

Differential Revision: https://reviews.llvm.org/D44941

llvm-svn: 328691

Summary:
This patch doing more check and verify the -march= string and will issue
an error if it's a invalid combination.

Reviewers: asb, apazos

Differential Revision: https://reviews.llvm.org/D44189

Patch by Kito Cheng.

llvm-svn: 328690

Summary:
RegisterCoalescer::removePartialRedundancy tries to hoist B = A from
BB0/BB2 to BB1:

  BB1:
       ...
  BB0/BB2:  ----
       B = A;   |
       ...      |
       A = B;   |
         |-------
         |

It does so if a number of conditions are fulfilled. However, it failed
to check if B was used by any of the terminators in BB1. Since we must
insert B = A before the terminators (since it's not a terminator itself),
this means that we could erroneously insert a new definition of B before a
use of it.

Reviewers: wmi, qcolombet

Reviewed By: wmi

Subscribers: MatzeB, llvm-commits, sdardis

Differential Revision: https://reviews.llvm.org/D44918

llvm-svn: 328689

The diagnostic system for Clang can already handle many AST nodes.  Instead
of converting them to strings first, just hand the AST node directly to
the diagnostic system and let it handle the output.  Minor changes in some
diagnostic output.

llvm-svn: 328688

Previously this crashed because a nullptr (returned by
createLocalIndirectStubsManagerBuilder() on platforms without
indirection support) functor was unconditionally invoked.

Patch by Andres Freund. Thanks Andres!

llvm-svn: 328687

This is a small optimization and avoids the need to use call_once.

llvm-svn: 328686

llvm-svn: 328685

We don't support input merge sections larger than 4gb, so these can be
uint32_t.

llvm-svn: 328684

As suggested in D44909.

llvm-svn: 328683

Baseline tests for vectors as suggested in D44909.

llvm-svn: 328682

Until we figure out what to do with it, vfork can cause stack-based
false positives.

llvm-svn: 328681

structs.

r326307 and r327870 made changes that allowed using non-trivial C
structs with fields qualified with __strong or __weak. This commit makes
the following C++ triviality type traits available to non-trivial C
structs:

__has_trivial_assign
__has_trivial_move_assign
__has_trivial_copy
__has_trivial_move_constructor
__has_trivial_constructor
__has_trivial_destructor

rdar://problem/33599681

Differential Revision: https://reviews.llvm.org/D44913

llvm-svn: 328680

llvm-svn: 328679

Summary:
Since wasm EH does not use landingpad instructions, these instructions
provide exception pointer and selector values until we lower them in
WasmEHPrepare.

Reviewers: jgravelle-google

Subscribers: jfb, sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D44930

llvm-svn: 328678