Reviewers: ioeric

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D26844

llvm-svn: 287330

When we see a SETCC whose only users are zero extend operations, we can replace
it with a subtraction. This results in doing all calculations in GPRs and
avoids CR use.

Currently we do this only for ULT, ULE, UGT and UGE condition codes. There are
ways that this can be extended. For example for signed condition codes. In that
case we will be introducing additional sign extend instructions, so more careful
profitability analysis may be required.

Another direction to extend this is for equal, not equal conditions. Also when
users of SETCC are any_ext or sign_ext, we might be able to do something 
similar.

llvm-svn: 287329

https://reviews.llvm.org/D26339

llvm-svn: 287328

In order to easily merge libc++ and libc++abi static archives it's important
that none of the source files share the same name.
(See http://stackoverflow.com/questions/3821916/how-to-merge-two-ar-static-libraries-into-one)

This patch renames source files which share a name with libc++ sources.

llvm-svn: 287327

Differential revision: https://reviews.llvm.org/D26834

llvm-svn: 287326

llvm-svn: 287325

llvm-svn: 287324

llvm-svn: 287323

Differential revision: https://reviews.llvm.org/D26792

llvm-svn: 287322

libc++ no longer supports C++11 compilers that don't implement `= default`.
This patch removes all instances of the feature test macro
_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS as well as the potentially dead code it hides.

llvm-svn: 287321

This reverts commit r287315, as it introduces a bug that breaks
many things.

llvm-svn: 287320

readVersionDeclaration was to read anonymous version definition and
named version definition. Splitting it into two functions should
improve readability as the two cases are different enough.

I also changed a few helper functions to return values instead of
mutating given references.

llvm-svn: 287319

llvm-svn: 287318

The doxygen comments are automatically generated based on Sony's intrinsics document.

I got an OK from Eric Christopher to commit doxygen comments without prior code
review upstream. This patch was internally reviewed by Charles Li.

llvm-svn: 287317

[InstCombine][AVX-512] Teach InstCombineCalls how to handle the intrinsics for variable shift with 16-bit elements.

This is a straightforward extension of the existing support for 32/64-bit element types. Just needed to add the additional instrinsics to the switches.

llvm-svn: 287316

This argument was only used in one place in the codebase, and
it was in a non-critical log statement and can be easily
substituted for an equally meaningful field instead.  The
payoff of computing this value is not worth the added
complexity.

llvm-svn: 287315

MergeOutputSection class was a bit hard to use because it provdes
a series of finalize functions that have to be called in a right way
at a right time. It also intereacted with MergeInputSection, and the
logic was somewhat entangled between the two classes.

This patch simplifies it by providing only one finalize function.
Now, all you have to do is to call MergeOutputSection::finalize
when you have added all sections to the output section. Then, it
internally merges strings and initliazes StringPiece objects.
I think this is much easier to understand.

This patch also adds comments.

llvm-svn: 287314

[AVX-512] Replace masked 16-bit element variable shift builtins with new unmasked versions and selects.

llvm-svn: 287313

[AVX-512] Replace masked 16-bit element variable shift intrinsics with new unmasked versions and selects.

The same thing was done to 32-bit and 64-bit element sizes previously.

This will allow us to support these shuffls in InstCombineCalls along with the other variable shift intrinsics.

llvm-svn: 287312

llvm-svn: 287311

There are still crashes on non-MVT types in other
places.

llvm-svn: 287310

Fix a typo in the conditional.  Caught by going through list of removed
symbols when building with hidden visibility.

Differential Revision: https://reviews.llvm.org/D26825

llvm-svn: 287309

Apparently these two enormous functions were dead.  Which is
good, since one was largely a copy of another function with
only a few minor tweaks.

llvm-svn: 287308

Originally I converted this entire function and all dependents
to use StringRef, but there were some test failures that
were tricky to track down, as this is a complicated function.
So I'm starting over, this time in smaller increments.

llvm-svn: 287307

llvm-svn: 287305

llvm-svn: 287302

llvm-svn: 287301

since bpf instruction set was introduced people learned to
read and understand kernel verifier output whereas llvm asm
output stayed obscure and unknown. Convert llvm to emit
assembler text similar to kernel to avoid this discrepancy

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
llvm-svn: 287300

[Docs][TableGen] Remove reference to tablegen supporting octal integers. It doesn't and hasn't for at least 9 years.

llvm-svn: 287299

Summary:
This extends FCOPYSIGN support to 512-bit vectors.

I've also added tests to show what the 128-bit and 256-bit cases look like with broadcast loads.

Reviewers: delena, zvi, RKSimon, spatel

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D26791

llvm-svn: 287298

llvm-svn: 287297

llvm-svn: 287296

The doxygen comments are automatically generated based on Sony's intrinsics document.

I got an OK from Eric Christopher to commit doxygen comments without prior code
review upstream. This patch was internally reviewed by Paul Robinson and Charles Li.

llvm-svn: 287295

Currently sym_check almost all names found in the binary, including those
which are defined in other libraries. This makes our ABI lists harder to maintain.

This patch adds a --only-stdlib-symbols option to sym_check which removes
all symbols which aren't possibly provided by libc++. It also re-generates
the linux ABI list after making this change.

llvm-svn: 287294

Summary: This should provide the function similar to `--disable-libedit` with the autotools build system, which seems to be missing from the commit (r200595) that adds this.

Reviewers: pcc, beanz

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D26550

llvm-svn: 287293

Run clang -cc1 -E instead of -S, in an attempt to make this test work
cross-platform.

llvm-svn: 287292

StartFunction enters a release cleanup for ns_consumed arguments in
ARC, so we need to balance that somehow.  We could teach StartFunction
that it's emitting a delegating function, so that the cleanup is
unnecessary, but that would be invasive and somewhat fraught.  We could
balance the consumed argument with an extra retain, but clearing the
original variable should be easier to optimize and avoid some extra work
at -O0.  And there shouldn't be any difference as long as nothing else
uses the argument, which should always be true for the places we emit
delegate arguments.

Fixes PR 27887.

llvm-svn: 287291

llvm-svn: 287290

llvm-svn: 287289

Reviewers: tra

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D26780

llvm-svn: 287288