This patch adds the instruction definitions and the assembly/disassembly
tests for the Load/Store VSX Vector Rightmose instructions.

Differential Revision: https://reviews.llvm.org/D83364

Document the default of `fail` in `-help`.  Extend `-dump-input=help`
to help users find related command-line options, but let `-help`
provide their full documentation.

Reviewed By: probinson

Differential Revision: https://reviews.llvm.org/D83091

This time without the change to make operator| use operator&=.
That seems to be the source of the gcc 5.3 miscompile.

Original commit message:
These represent the same thing but 64BIT only showed up from
getHostCPUFeatures providing a list of featuers to clang. While
EM64T showed up from getting the features for a named CPU.

EM64T didn't have a string specifically so it would not be passed
up to clang when getting features for a named CPU. While 64bit
needed a name since that's how it is index.

Merge them by filtering 64bit out before sending features to clang
for named CPUs.

This is practically NFC at the moment because nothing really
asks the real number or does anything useful with it.

Differential Revision: https://reviews.llvm.org/D82202

Make it easier to debug renaming issues.

This likely has broken test/Transforms/Attributor/IPConstantProp/ tests.
http://45.33.8.238/linux/22502/step_12.txt

This reverts commit 205dc092.

as it's causing build errors with another clang so I'll need to approach
this differently.

This reverts commit c2827083.

as it was failing in Release+Asserts mode with an assert.

This reverts commit bd206803.

This reverts commit c92a8c0a.

It breaks builds and has unaddressed review comments.

Summary:
Ignore callback uses when adding a callback function
in the CallGraph. Callback functions are typically
created when outlining, e.g. for OpenMP, so they have
internal scope and linkage. They should not be added
to the ExternalCallingNode since they are only callable
by the specified caller function at creation time.

A CGSCC pass, such as OpenMPOpt, may need to update
the CallGraph by adding a new outlined callback function.
Without ignoring callback uses, adding breaks CGSCC
pass restrictions and results to a broken CallGraph.

Reviewers: jdoerfert

Subscribers: hiraditya, sstefan1, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D83370

Summary:
This handles all three places where attributes could currently be - `GlobalVariable`, `Function` and `CallBase`.
For last two, it correctly handles all three possible attribute locations (return value, arguments and function itself)

There was a previous attempt at it D73853,
which was committed in rGfc62b36a,
but then reverted all the way back in rGb12176d2
due to some (osx?) test failures.

Reviewers: nickdesaulniers, dblaikie, diegotf, george.burgess.iv, jdoerfert, Tyker, arsenm

Reviewed By: nickdesaulniers

Subscribers: wdng, MaskRay, arsenm, llvm-commits, mgorny

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D83351

Summary:
As per lengthy/heated disscussion in D83351,
and CodingStandards D83431.

Reviewers: dblaikie, nickdesaulniers

Reviewed By: nickdesaulniers

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D83434

Reviewers: nickdesaulniers, dblaikie

Reviewed By: nickdesaulniers

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D83435

Summary:
As per disscussion in D83351, using `for_each` is potentially confusing,
at least in regards to inconsistent style (there's less than 100 `for_each`
usages in LLVM, but ~100.000 `for` range-based loops

Therefore, it should be avoided.

Reviewers: dblaikie, nickdesaulniers

Reviewed By: dblaikie, nickdesaulniers

Subscribers: hubert.reinterpretcast, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D83431

And just after 3 days, we have a hit in `InstCombiner::mergeStoreIntoSuccessor()`:
https://bugs.llvm.org/show_bug.cgi?id=46661

To be recommitted once that is addressed.

This reverts commit cd7f8051.

This change adds the necessary flags for building the full Fuchsia
toolchain on Windows with MSVC.

Differential Revision: https://reviews.llvm.org/D73810

Reviewers: hans, chandlerc!, asbirlea, nikic

Reviewed By: hans, nikic

Subscribers: steven_wu, dexonsmith, nikic, echristo, void, zhizhouy, cfe-commits, aeubanks, MaskRay, jvesely, nhaehnle, hiraditya, kerbowa, llvm-commits

Tags: #llvm, #clang

Differential Revision: https://reviews.llvm.org/D83013

Reviewers: efriedma, fpetrogalli, sdesmalen, RKSimon, arsenm

Reviewed By: RKSimon

Subscribers: wdng, tschuett, hiraditya, rkruppe, psnobl, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D82210

Follow up from the transform being removed in D83360. If X is probably not poison, then the transform is safe.

Still plan to remove or adjust the code from ConstantFolding after this.

Differential Revision: https://reviews.llvm.org/D83440

This reduces the set of substitutions required to run the test suite.

Summary:
AIX uses an environment variable called OBJECT_MODE to indicate to
utilities in the toolchain whether they should be operating in 32-bit or
64-bit mode. This patch makes the clang driver recognize the current
OBJECT_MODE setting when we are operating with an AIX target and adds a
custom diagnostic for invalid settings.

For more details about OBJECT_MODE on AIX see:

https://www.ibm.com/support/knowledgecenter/SSGH2K_13.1.3/com.ibm.xlc1313.aix.doc/compiler_ref/tusetenv1.html
https://www.ibm.com/support/knowledgecenter/SSGH2K_13.1.3/com.ibm.xlc1313.aix.doc/compiler_ref/opt_3264.html

Reviewers: stevewan, hubert.reinterpretcast, ShuhongL, jasonliu

Reviewed By: hubert.reinterpretcast, jasonliu

Subscribers: jasonliu, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D82476

Reviewed By: bondhugula, flaub

Differential Revision: https://reviews.llvm.org/D82600

This assert was failing:
assert(CAT && "unexpected type for array initializer");

until this patch landed:
9a7eda1b
PR45350: Handle unsized array CXXConstructExprs in constant evaluation

Differential Revision: https://reviews.llvm.org/D83456

There are bugs where you don't want the signal handler to trigger, most
notably when that will cause another crash. Examples of this are lldb
running out of memory or a bug in the reproducer generation code. This
adds an escape hatch trough a (developer oriented) flag to not install
the signal handler.

rdar://problem/65149595

Differential revision: https://reviews.llvm.org/D83496

This is a preparatory rename of the developer facing reproducer flags.

reproducer-skip-version-check -> reproducer-no-version-check
reproducer-auto-generate      -> reproducer-generate-on-quit

The following: https://reviews.llvm.org/D82552

fixed an assert in the SelectionDag ISel legalizer for some CCs on armv7.

I noticed that this fix also fixes the assert when using fastcc, so I am
adding a fastcc regression test here.

Differential Revision: https://reviews.llvm.org/D82443

Reviewers: ABataev, jdoerfert

Reviewed By: ABataev

Subscribers: yaxunl, guansong, arphaman, sstefan1, cfe-commits, sandoval, dreachem

Tags: #clang

Differential Revision: https://reviews.llvm.org/D82800

This preserves existing behavior before f5f58f1f.

[InstSimplify] Don't fold vectors of partial undef in SimplifySelectInst if the non-undef element value might produce poison

We can't fold to the non-undef value unless we know it isn't poison. So check each element with isGuaranteedNotToBeUndefOrPoison. This currently rules out all constant expressions.

Differential Revision: https://reviews.llvm.org/D83442

If we don't immediately lower the vector shift, the splat
constant vector we created may get turned into a constant pool
load before we get around to lowering the shift. This makes it
a lot more difficult to create a shift by constant. Sometimes we
fail to see through the constant pool at all and end up trying
to lower as if it was a variable shift. This requires custom
handling and may create an unsupported vselect on pre-sse-4.1
targets. Since we're after LegalizeVectorOps we are unable to
legalize the unsupported vselect as that code is in LegalizeVectorOps
rather than LegalizeDAG.

So calling LowerShift immediately ensures that we get see the
splat constant.

Fixes PR46527.

Differential Revision: https://reviews.llvm.org/D83455

These were initially added to cleanup some transient/leftover files in
r372054. Now that's all cleaned up, these are no longer needed.