This reverts commit fa6b54c4.
The commited patch broke mlir tests. It seems that mlir tests depend on coroutine function properties set in CoroEarly pass.

This came up in D100595.

Differential Revision: https://reviews.llvm.org/D100728

The number of modes is small so this should avoid a heap allocation.

Also replace std::set with SmallSet.

Presplit coroutines cannot be inlined. During AlwaysInliner we check if a function is a presplit coroutine, if so we skip inlining.
The presplit coroutine attributes are set in CoroEarly pass.
However in O0 pipeline, AlwaysInliner runs before CoroEarly, so the attribute isn't set yet and will still inline the coroutine.
This causes Clang to crash: https://bugs.llvm.org/show_bug.cgi?id=49920

To fix this, we set the attributes in the Clang front-end instead of in CoroEarly pass.

Reviewed By: rjmccall, ChuanqiXu

Differential Revision: https://reviews.llvm.org/D100282

This reverts commit 2b50f5a4.
Forgot to update the description of the commit to sync with phabricator. Going to redo the commit.

Presplit coroutines cannot be inlined. During AlwaysInliner we check if a function is a presplit coroutine, if so we skip inlining.
The presplit coroutine attributes are set in CoroEarly pass.
However in O0 pipeline, AlwaysInliner runs before CoroEarly, so the attribute isn't set yet and will still inline the coroutine.
This causes Clang to crash: https://bugs.llvm.org/show_bug.cgi?id=49920

Differential Revision: https://reviews.llvm.org/D100282

This fixes cases where "not not <command>" is supposed to return
only the error codes 0 or 1, but after efee5792,
it passed the original error code through.

This was visible on AIX in the shtest-output-printing.py testcase,
where 'wc' returns 2, while it returns 1 on other platforms, and the
test required "not not" to normalize it to 1.

MachineValueTypeSet is effectively a std::bitset<256>. This allows
us quickly insert into the set and check if a type is in the set.

Test case for a SCEV invalidation bug caused by D100264, which
has since been reverted.

Saves running the generate inc script in the, somewhat common, case where the json file doesn't need changing.

Reviewed By: steveire

Differential Revision: https://reviews.llvm.org/D100719

glibc s390x doesn't define __tls_get_addr.

Fix PR50017

Since we have a tool to detect cycles now; and since we're entering
a phase where people can easily introduce cycles by accident (D100682)
or by request (D90999), I think it's increasingly important to shift
the burden of detecting these cycles onto the buildbot instead of
the poor human reviewer.

Also, grep for non-ASCII characters (such as U+200B and U+00AD)
and hard tabs; don't let those get checked in.

Differential Review: https://reviews.llvm.org/D100703

As being discussed in https://reviews.llvm.org/D100721,
this modelling is lossy, we can't reconstruct `ash`/`ashr exact`
from it, which means that whenever we actually expand the IR,
we've just pessimized the code..

It would be good to model this pattern, after all it comes up every time
you want to compute a distance between two pointers, but not at this cost.

This reverts commit ec54867d.

Don't try to execute clang-ast-dump when cross compiling.

This is the initial patch to implement ranges in libc++.

Implements parts of:
- P0896R4 One Ranges Proposal
- P1870 forwarding-range is too subtle
- LWG3379 in several library names is misleading

Reviewed By: ldionne, #libc, cjdb, zoecarver, Quuxplusone

Differential Revision: https://reviews.llvm.org/D90999

Add test cases showing large ashr expansion during IndVarSimplify
after ec54867d.

Test SSE41, since that added float/i64/i32/i8 inserts/extracts.
Don't forget to test vectors of pointers.
Do test byte-aligned loads/stores.
Fixup test coverage to be rather more exhaustive,
testing all reasonable element sizes vs element counts permutations
that fit up to witin ZMM.

This is a patch to use m_Undef() matcher instead of isa<UndefValue>().

As suggested in D100122, this update is separately committed.

This fixes https://reviews.llvm.org/D93990#2666922
by teaching `m_Undef` to match vectors/aggrs with poison elements.

As suggested, fixes in InstCombine files to use the `m_Undef` matcher instead
of `isa<UndefValue>` will be followed.

Reviewed By: lebedev.ri

Differential Revision: https://reviews.llvm.org/D100122

Extend the matchers gathering API for types to record template
parameters.  The TypeLoc type hierarchy has some types which are
templates used in CRTP such as PointerLikeTypeLoc.  Record the inherited
template and template arguments of types inheriting those CRTP types in
the ClassInheritance map.  Because the name inherited from is now
computed, the value type in that map changes from StringRef to
std::string.  This also causes the toJSON override signature used to
serialize that map to change.

Remove the logic for skipping over empty ClassData instances.  Several
classes such as TypeOfExprTypeLoc inherit a CRTP class which provides
interesting locations though the derived class does not.  Record it as a
class to make the locations it inherits available.

Record the typeSourceInfo accessors too as they provide access to
TypeLocs in many classes.

The existing unit tests use UnorderedElementsAre to compare the
introspection result with the expected result.  Our current
implementation of google mock (in gmock-generated-matchers.h) is limited
to support for comparing a container of 10 elements.  As we are now
returning more than 10 results for one of the introspection tests,
change it to instead compare against an ordered vector of pairs.

Because a macro is used to generate API strings and API calls, disable
clang-format in blocks of expected results.  Otherwise clang-format
would insert whitespaces which would then be compared against the
introspected strings and fail the test.

Introduce a recursion guard in the generated code.  The TypeLoc class
has IgnoreParens() API which by default returns itself, so it would
otherwise recurse infinitely.

Differential Revision: https://reviews.llvm.org/D100516

At the moment, ReversePostOrderTraversal performs a post-order walk on
the entry node of the passed in graph, rather than the graph type
itself.

If GT::NodeRef is the same as GraphT, everything works as expected and
this is the case for the current uses in-tree. But it does not work as
expected if GraphT != GT::NodeRef. In that case, we either fail to build
(if there is no GraphTrait specialization for GT:NodeRef) or we pick the
GraphTrait specialization for GT::NodeRef, instead of the specialization
of GraphT.

Both the depth-first and post-order iterators pick the expected
specalization and this patch updates ReversePostOrderTraversal to
delegate to po_begin & po_end to pick the right specialization, rather
than forcing using GraphTraits<GT::NodeRef>, by first getting the entry
node.

This makes `ReversePostOrderTraversal<Graph<6>> RPOT(G);` build and
work as expected in the test.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D100169

Replace branch on undef by branch on unknown condition.

clang-scan-deps contains some command line parsing and modifications.
This patch adds support for clang-cl command options.

Differential Revision: https://reviews.llvm.org/D92191

This fixes argument injection in clang command lines, by adding them before "--".

Previously, the arguments were injected at the end of the command line and could be added after "--", which would be wrongly interpreted as input file paths.

This fix is needed for a subsequent patch, see D92191.

Differential Revision: https://reviews.llvm.org/D95099

This keeps track of which modes are in VVT so we can find out
if a mode is missing later. But we can just ask VVT whether it
has a particular mode.

Reviewed By: xgupta

Differential Revision: https://reviews.llvm.org/D100705

This class initially had args to be generic to future needs. In
particular, I thought that source location introspection should show the
getBeginLoc of CallExpr args and the getArgLoc of
TemplateSpecializationLocInfo etc.  However, that is probably best left
out of source location introspection because it involves node traversal.

If something like this is needed in the future, it can be added in the
future.

Differential Revision: https://reviews.llvm.org/D100688

This patch updates a couple of functions that unnecessarily took the
input graph by value, when it was not needed. They can take the graph by
const-reference instead, which does not require GraphT to provide a copy
constructor.

Split off from D100169.