There are some VectorShuffle Nodes in SDAG which can be selected to XXPERMDI
Instruction, this patch recognizes them and does the selection to improve
the PPC performance.

Differential Revision: https://reviews.llvm.org/D33404

llvm-svn: 304298

llvm-svn: 304291

This patch builds upon https://reviews.llvm.org/rL302810 to add
handling for the 64-bit SETEQ patterns.

Differential Revision: https://reviews.llvm.org/D33369

llvm-svn: 304286

When generating code for a shift loop, check the shift
 amount against the literal value 0, not R0

llvm-svn: 304284

(https://github.com/avr-rust/rust/issues/50)

llvm-svn: 304283

This patch builds upon https://reviews.llvm.org/rL302810 to add
handling for bitwise logical operations in general purpose registers.
The idea is to keep the values in GPRs as long as possible - only
extracting them to a condition register bit when no further operations
are to be done.

Differential Revision: https://reviews.llvm.org/D31851

llvm-svn: 304282

[TableGen] Implement non-const versions of Record::getValue by delegating to the const versions to avoid duplicate code. NFC

llvm-svn: 304281

llvm-svn: 304280

The code was a mess and disorganized due to the sheer amount
of it being in one file.  So I'm splitting this into three files.
One for CodeView types, one for CodeView symbols, and one for
CodeView debug subsections.  NFC.

llvm-svn: 304278

Summary:

Fixes: https://bugs.llvm.org/show_bug.cgi?id=33226

Reviewers: chandlerc, davide, majnemer, dblaikie

Reviewed By: chandlerc

Subscribers: EricWF, llvm-commits

Differential Revision: https://reviews.llvm.org/D33701

llvm-svn: 304277

Thanks to Galina Kistanova for finding the missing break!

When trying to make a test for this, I realized our logic for handling
extractvalue/insertvalue/... is somewhat broken. This makes constructing
a test-case for this missing break nontrivial.

llvm-svn: 304275

The frame pointer (when used as frame pointer) is a reserved register.
We do not track liveness of reserved registers and hence do not need to
add them to the basic block livein lists.

llvm-svn: 304274

llvm-svn: 304273

generate a phi of ops, which we don't currently support.

llvm-svn: 304272

llvm-svn: 304271

llvm-svn: 304270

This test assumes that llc can infer a default triple. I'm not sure why
exactly, but the Verify MachineInstrs bot requires tests to be explicit
about this dependency.

This commit follows the lead from r248452 and adds in 'REQUIRES:
default_triple' to omit-empty.ll.

Bot URL: http://lab.llvm.org:8080/green/job/Verify-Machineinstrs_AArch64/7500

llvm-svn: 304269

llvm-svn: 304268

This is the equivalent of r304048 for ARM:

- Rewrite livein calculation to use the computeLiveIns() helper
  function. This is slightly less efficient but easier to reason about
  and doesn't unnecessarily add pristine and reserved registers[1]
- Zero the status register at the beginning of the loop to make sure it
  has a defined value.
- Remove kill flags of values that need to stay alive throughout the loop.

[1] An upcoming commit of mine will tighten the MachineVerifier to catch
    these.

llvm-svn: 304267

llvm-svn: 304266

[CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC).

llvm-svn: 304265

llvm-svn: 304264

CodeViewYAML.h attempts to hide the details of many of the
CodeView yaml structures and types, but at the same time it
exposes the mapping traits for them to external users of the
header.

This patch just hides these in the implementation files so that
the interface is kept as simple as possible.

llvm-svn: 304263

llvm-svn: 304262

llvm-svn: 304259

llvm-svn: 304257

This continues the effort to get the CodeView YAML parsing logic
into ObjectYAML.  After this patch, the only missing piece will
be the CodeView debug symbol subsections.

llvm-svn: 304256

llvm-svn: 304255

This was introduced a long time ago in r86583 when regmask operands
didn't exist. Nowadays the behavior hurts more than it helps. This
removes it.

llvm-svn: 304254

which isn't support before c++11.

llvm-svn: 304252

Summary:
AntiDepBreaker intends to add all live-outs, including the implicit
CSRs, in StartBlock. r299124 was done without understanding that
intention.

Now with the live-ins propagated correctly (D32464), we can revert this change.

Reviewers: MatzeB, qcolombet

Subscribers: nemanjai, llvm-commits

Differential Revision: https://reviews.llvm.org/D33697

llvm-svn: 304251

I think I hadn't git pulled recently enough to bring it in.

llvm-svn: 304250

llvm-svn: 304249

This is the beginning of an effort to move the codeview yaml
reader / writer into ObjectYAML so that it can be shared.
Currently the only consumer / producer of CodeView YAML is
llvm-pdbdump, but CodeView can exist outside of PDB files, and
indeed is put into object files and passed to the linker to
produce PDB files.  Furthermore, there are subtle differences
in the types of records that show up in object file CodeView
vs PDB file CodeView, but they are otherwise 99% the same.

By having this code in ObjectYAML, we can have llvm-pdbdump
reuse this code, while teaching obj2yaml and yaml2obj to use
this syntax for dealing with object files that can contain
CodeView.

This patch only adds support for CodeView type information
to ObjectYAML.  Subsequent patches will add support for
CodeView symbol information.

llvm-svn: 304248

TargetPassConfig is not useful for targets that do not use the CodeGen
library, so we may just as well store a pointer to an
LLVMTargetMachine instead of just to a TargetMachine.

While at it, also change the constructor to take a reference instead of a
pointer as the TM must not be nullptr.

llvm-svn: 304247

We can infer this from the incoming MIR, so there's no reason to
represent it with a special flag.

llvm-svn: 304246

Differential Revision: http://reviews.llvm.org/D33618

llvm-svn: 304245

There is no guarantee that the first use of a constant that is traversed
is actually the first in the related basic block. Thus, if we use that
as the insertion point we may end up with definitions that don't
dominate there use.

llvm-svn: 304244

This will fail if you configure with e.g. -Wno-unknown-warning-option.
Change it to check for 'warning:' just like we did for 'error:' in
r289484.

llvm-svn: 304239

r303763 caused build failures in some out-of-tree tests due to an assertion in
TTI. The original patch updated cost estimates for induction variable update
instructions marked for scalarization. However, it didn't consider that the
incoming value of an induction variable phi node could be a cast instruction.
This caused queries for cast instruction costs with a mix of vector and scalar
types. This patch includes a fix for cast instructions and the test case from
PR33193.

The fix was suggested by Jonas Paulsson <paulsson@linux.vnet.ibm.com>.

Reference: https://bugs.llvm.org/show_bug.cgi?id=33193
Original Differential Revision: https://reviews.llvm.org/D33457

llvm-svn: 304235