llvm-svn: 270421

llvm-svn: 270420

The exit-on-error flag on the many_args1.ll test is needed to avoid an
unreachable in BPFTargetLowering::LowerCall. We can also avoid it by ignoring
any superfluous arguments to the call (i.e. any arguments after the first 5).

Fixes PR27766

llvm-svn: 270419

This code should have been with the previous check-in (r270417) and prevents the DelaySlotFiller pass being utilized in functions where the erratum fix has been applied as this will break the run-time code.

llvm-svn: 270418

Due to an erratum in some versions of LEON, we must insert a NOP after any LD or LDF instruction to ensure the processor has time to load the value correctly before using it. This pass will implement that erratum fix.

The code will have no effect for other Sparc, but non-LEON processors.

Differential Review: http://reviews.llvm.org/D20353

llvm-svn: 270417

  Before this patch we bailed if a required invariant load was potentially
  overwritten. However, now we will optimistically assume it is actually
  invariant and, to this end, restrict the valid parameter space as well as the
  execution context with regards to potential overwrites of the location.

llvm-svn: 270416

Reviewers: nhaustov, tstellarAMD

Subscribers: kzhuravl, arsenm

Differential Revision: http://reviews.llvm.org/D20166

llvm-svn: 270415

llvm-svn: 270414

llvm-svn: 270413

  Since the base pointer of a possibly aliasing pointer might not alias
  with any other pointer it (the base pointer) might not be tagged as
  "required invariant". However, we need it do be in order to compare
  the accessed addresses of the derived (possibly aliasing) pointer.

  This patch also tries to clean up the load hoisting a little bit.

llvm-svn: 270412

llvm-svn: 270411

llvm-svn: 270410

  We have to rethink the handling of escaping values in order to make
  this kind of "fixes" go away.

llvm-svn: 270409

  This patch simplifies the Sdiv/Srem/Udiv expansion and thereby
  prevents errors, e.g., regarding the insertion point.

llvm-svn: 270408

Differential Revision: http://reviews.llvm.org/D20514

llvm-svn: 270401

backtraces from the signal handler on stack overflow now work reliably (on my
system at least...).

llvm-svn: 270395

[X86] Use instruction aliases to replace custom asm parser code for optimizing moves to use 2 byte VEX prefix.

llvm-svn: 270394

Previously, EhFrameHdr section computed addresses to which FDEs are
applied to. This is not an ideal design because EhFrameHdr does not
know much about FDEs unless EhFrame passes the information to EhFrameHdr.
It is what we did.

This patch simplifies the code by making EhFrame to compute the
values and pass the cooked information to EhFrameHdr. EhFrameHdr no
longer have to know about the details of FDEs such as FDE encodings.

llvm-svn: 270393

Exherbo has an alternative file system layout to accommodate multiarch.  The
loader is located at /usr/${triple}/lib/${loader}.  Adjust the Linux toolchain
to support that on exherbo.

llvm-svn: 270392

llvm-svn: 270391

llvm-svn: 270390

This reverts commit r270106.  It results in certain function types
omitted in the output.

llvm-svn: 270389

llvm-svn: 270388

llvm-svn: 270387

llvm-svn: 270386

llvm-svn: 270385

My last commit made Clang to fail with an assertion failure.
https://llvm.org/bugs/show_bug.cgi?id=27835
This is a patch to avoid that.

llvm-svn: 270384

[AVX512] Add patterns to implement stores of extracts of least signficant subvectors using XMM or YMM stores instead of the vector extract instructions.

Similar is already done for AVX and we had lost it going to AVX512VL.

llvm-svn: 270383

This patch refactors EHOutputSection using SectionPiece struct.
EHRegion class was removed since we can now directly use SectionPiece.

An incomplete support of large CIE/FDE record (> 2^32 bytes) was removed
because it silently created broken executable. There are several places
in the existing code that "size" field is always 4 bytes and at offset 4
in the record, which is not true for 64-bit size records. We will have to
support that in future, but it is better to error out instead of creating
malformed eh_frame sections.

llvm-svn: 270382

If TheModule is declared before LLVMContext then it will be destructed after it,
crashing when it tries to deregister itself from the destructed context.

llvm-svn: 270381

llvm-svn: 270380

llvm-svn: 270379

This isn't the complete fix, but it handles the trivial examples of duplicate vzero* ops in PR27823:
https://llvm.org/bugs/show_bug.cgi?id=27823
...and amusingly, the bogus cases already exist as regression tests, so let's take this baby step.

We'll need to do more in the general case where there's legitimate AVX usage in the function + there's
already a vzero in the code.

Differential Revision: http://reviews.llvm.org/D20477

llvm-svn: 270378

Address a -Wunused-but-set-variable warning from gcc.  NFC.

llvm-svn: 270377

Using -fomit-frame-pointer sometimes makes a crash log miss some frames. Let's not use this optimization in debug builds.

Differential Revision: http://reviews.llvm.org/D20425

llvm-svn: 270376

llvm-svn: 270375

llvm-svn: 270374

llvm-svn: 270373

llvm-svn: 270372

Remove dependency on runtime initializer to avoid
issues related to initialization order.

llvm-svn: 270371