Improve invalid-ir-print-after-failure.mlir to show the effects of -mlir-print-assume-verified (NFC)

This patch replaces getargspec with getfullargspec in funcutils.py.
getargspec has been deprecated by python 11x release. This is
important to run LLDB testsuite in Windows/Arm64 platform
where Python native will be available from python release onwards.

Note: getfullargspec is not available in python 2

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D121786

https://docs.microsoft.com/en-us/cpp/intrinsics/arm64-intrinsics?view=msvc-170

Reland after fixing the test failure. The failure was due to conflict with a
change (D122983) which was merged right before this patch.

Reviewed By: rnk, mstorsjo

Differential Revision: https://reviews.llvm.org/D124032

This is a port of f5c66674 to clang's tablegen,
with a better wording.

Differential Revision: https://reviews.llvm.org/D123682

Note that the underlying flush implementation does not yet fully implement
the POSIX standard. It is complete with respect to the C standard
however. A future change will add the POSIX behavior. It should not affect
the implementation of the fflush function however as the POSIX behavior
will be added in a lower layer.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D124073

This reverts commit 8a9b4fb4.

Differential Revision: https://reviews.llvm.org/D124035

This patch extends the scope of VPlan to also include the exit (aka
middle) block.

For now, the exit block remains empty, but handling of exit values will
subsequently be moved to VPlan, by adding recipes to model exit values
in the exit block.

As a first step, this will allow fixing #51366.

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D123457

This is sort of a followup to D37310; that basically fixed the same
issue, but then the libstdc++ implementation of <atomic> changed. Re-fix
the the issue in essentially the same way: look through the addressof
operation to find the alignment of the underlying object.

Differential Revision: https://reviews.llvm.org/D123950

Current stack size diagnostics ignore the size of the unsafe stack.
This patch attaches the size of the static portion of the unsafe stack
to the function as metadata, which can be used by the backend to emit
diagnostics regarding stack usage.

Reviewed By: phosek, mcgrathr

Differential Revision: https://reviews.llvm.org/D119996

This reverts commit 1d3ba05e which caused failures of the VFS/real-path-found-first.m test on Windows build bots.

This patch removes uses of the deprecated `DirectoryEntry::getName()` from the `ModuleMap::diagnoseHeaderInclusion()` function by using `{File,Directory}EntryRef` instead.

Reviewed By: bnbarham

Differential Revision: https://reviews.llvm.org/D123856

https://docs.microsoft.com/en-us/cpp/intrinsics/arm64-intrinsics?view=msvc-170

Reviewed By: rnk, mstorsjo

Differential Revision: https://reviews.llvm.org/D124032

This reverts commit 69dd89fd.
This reverts commit 04000c2f.

The current states breaks libstdc++ usage (https://reviews.llvm.org/D119136#3455423).
The fixup has been reverted as it caused other valid code to be disallowed.
I think we should start from the clean state by reverting all relevant commits.

The previous code unneccessarily duplicated the creation of a diagnostic
where the only difference was the `AssignmentAction` being passed.

rdar://88664722

Differential Revision: https://reviews.llvm.org/D124054

Add additional test coverage for D123473.

STB_HIPROC and STT_HIPROC are both 15, so we can fit the symbol binding
and type in 4 bits. This gives us an additional byte to use for Symbol
flags (without increasing the type's size), which I'll be making use of
in the next diff.

Reorder type and binding based on a suggestion from @MaskRay, to
optimize st_info computation on little-endian systems (see
https://godbolt.org/z/nMn8Yar43).

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D124042

Because of https://llvm.org/PR50675, we can end up producing a PLT
relocation referencing a symbol that's dropped from the dynamic symbol
table, which in turn causes a crash at runtime. We ran into this again
recently, resulting in crashes for our users. A subsequent diff will fix
that issue, but add an assert to catch it if it happens again.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D123985

This should fix the issue found by:
https://lab.llvm.org/buildbot/#/builders/37/builds/12606

Previously, I was assuming that S_DEFRANGE_SUBFIELD_REGISTERs are always in the
increasing order of offset_in_parent until I saw a counter example.

Using `std::map` so that they are sorted by offset_in_parent.

Differential Revision: https://reviews.llvm.org/D124061

This reverts commit daa6d7b2.

It breaks valid code like https://reviews.llvm.org/D123909#3461716

WG14 has elected to remove support for K&R C functions in C2x. The
feature was introduced into C89 already deprecated, so after this long
of a deprecation period, the committee has made an empty parameter list
mean the same thing in C as it means in C++: the function accepts no
arguments exactly as if the function were written with (void) as the
parameter list.

This patch implements WG14 N2841 No function declarators without
prototypes (http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2841.htm)
and WG14 N2432 Remove support for function definitions with identifier
lists (http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2432.pdf).

It also adds The -fno-knr-functions command line option to opt into
this behavior in other language modes.

Differential Revision: https://reviews.llvm.org/D123955

This reverts commit 9f075c3d

.
The broken build has alreasy been fixed in D124012, so reland it now.
Signed-off-by: Jun Zhang <jun@junz.org>

Set LBOUND() constant folding for parentheses expr. as ones

Array bounds should not propagate throught omitted bounds specifications or
temporary variables - fix constant folding in case of Parentheses<T> expression
by explicitly returning array of ones (or scalar in case of DIM=).

Add set of tests for (x) bounds checks (w/ and w/o 'parameter' arrays)

Reviewed By: jeanPerier

Differential Revision: https://reviews.llvm.org/D123838

Previously constant folding uses 'dim' without checks which leads to ICE if we
do not have DIM= parameter. And for inputs without DIM= we need to form an
array of rank size with computed bounds instead of single value.

Add additional PackageConstant function to simplify 'if (dim)' handling since we
need to distinguish between scalar initialization in case of DIM= argument and
rank=1 array.

Also add a few more tests with 'parameter' type to verify folding for constant
arrays.

Reviewed By: jeanPerier

Differential Revision: https://reviews.llvm.org/D123237

Ensure that the expressions associated with terminators are associated with a
value. Otherwise, we can generate degenerate flow conditions, where both
branches share the same condition.

Differential Revision: https://reviews.llvm.org/D123858

This patch changes the member of `FrameworkCacheEntry` from `const DirectoryEntry *` to `Optional<DirectoryEntryRef>` in order to remove uses of the deprecated `DirectoryEntry::getName()`.

Reviewed By: bnbarham

Differential Revision: https://reviews.llvm.org/D123854

This patch removes use of the deprecated `DirectoryEntry::getName()` from `FrontendAction::BeginSourceFile()`.

Reviewed By: bnbarham

Differential Revision: https://reviews.llvm.org/D123853

This patch removes uses of the deprecated `DirectoryEntry::getName()` from `HeaderSearch::load*()` functions by using `DirectoryEntryRef` instead.

Note that we bail out in one case and use the also deprecated `FileEntry::getLastRef()`. That's to prevent this patch from growing, and is addressed in a follow-up.

Reviewed By: bnbarham

Differential Revision: https://reviews.llvm.org/D123771

We can process the long shuffles (working across several actual
vector registers) in the best way if we take the actual register
represantion into account. We can build more correct representation of
register shuffles, improve number of recognised buildvector sequences.
Also, same function can be used to improve the cost model for the
shuffles. in future patches.

Part of D100486

Differential Revision: https://reviews.llvm.org/D115653

This should address the issue in:
https://lab.llvm.org/buildbot/#/builders/77/builds/16683

We're making a recursive call here and everything in the function
assumes we're looking at scalars. This would be violated if we
looked through a bitcast from vectors.

Reviewed By: spatel

Differential Revision: https://reviews.llvm.org/D124015

Reviewed By: spatel

Differential Revision: https://reviews.llvm.org/D124016

if c is divisible by (1 << ShAmtC), we can fold this pattern:
lshr (mul nuw x, c), ShAmtC -> mul nuw x, (c >> ShAmtC)

https://alive2.llvm.org/ce/z/ox4wAt

Fix https://github.com/llvm/llvm-project/issues/54824

Reviewed By: spatel, lebedev.ri, craig.topper

Differential Revision: https://reviews.llvm.org/D123453

This should address the issue found in:
https://lab.llvm.org/buildbot/#/builders/215/builds/4610

This should address the issues found by:
https://lab.llvm.org/buildbot/#/builders/105/builds/24292

This was last touched 13 years ago in
https://github.com/llvm/llvm-project/commit/7a1095f243e393d40ed9b9cee17fd091a13f2947
and is no longer being maintained.

This should address build failures found in:

https://lab.llvm.org/buildbot/#/builders/217/builds/3610
https://lab.llvm.org/buildbot/#/builders/215/builds/4609
https://lab.llvm.org/buildbot/#/builders/68/builds/31012