llvm-svn: 300191

Throughout the effort of automatically generating the X86 memory folding tables these missing information were encountered.
This is a preparation work for a future patch including the automation of these tables.

Differential Revision: https://reviews.llvm.org/D31714

llvm-svn: 300190

We now check the type of the super-region pointer for most SubRegion classes
in compile time; some checks are run-time though.

This is an API-breaking change (we now require explicit casts to specific region
sub-classes), but in practice very few checkers are affected.

Differential Revision: https://reviews.llvm.org/D26838

llvm-svn: 300189

This addresses post commit review comments for r300039.

llvm-svn: 300188

Clean up vtable anchors (remove anchors for regions that have regular
out-of-line virtual methods, add anchors for regions that don't have those).

Fix private/public methods (all constructors should now be private for leaf
classes, protected for abstract classes).

No functional change intended, only extra sanity checks and cleanups.

Differential Revision: https://reviews.llvm.org/D26837

llvm-svn: 300187

Reviewers: ab, t.p.northover, qcolombet, aditya_nandakumar, rovka

Reviewed By: ab

Subscribers: dberris, kristof.beyls, igorb, llvm-commits

Differential Revision: https://reviews.llvm.org/D31325

llvm-svn: 300186

llvm-svn: 300185

Differential Revision: https://reviews.llvm.org/D31743

llvm-svn: 300184

Refactoring InnerLoopVectorizer's vectorizeBlockInLoop() to provide
vectorizeInstruction(). Aligning DeadInstructions with its only user.
Facilitates driving the transformation by VPlan - follows
https://reviews.llvm.org/D28975 and its tentative breakdown.

Differential Revision: https://reviews.llvm.org/D31997

llvm-svn: 300183

    
ARM Exception Index Table sections .ARM.exidx have an implicit dependency
on code sections via SHF_LINK_ORDER. When code sections are folded by ICF
we must mark the unique .ARM.exidx table that describes it as not live
to prevent an illegal entry in the exception table.
    
Note that we do not try and follow the relocations from the .ARM.exidx
section to the .ARM.extab sections to mark these as not live. Leaving
these sections is not a correctness problem. In theory these could be
removed via an application of garbage collection.
    
Fixes https://bugs.llvm.org/show_bug.cgi?id=32614

Differential Revision: https://reviews.llvm.org/D31932

llvm-svn: 300182

This reverts commit 47979b20b475664013d19382fc6875b5b9f3ed9d.

This was causing a couple of bots to fail.

http://lab.llvm.org:8080/green/job/clang-stage1-configure-RA_check/30152

llvm-svn: 300181

This reverts commit r300107 because it broke the ARM and AArch64
buildbots.

llvm-svn: 300180

llvm-svn: 300179

SValBuilder tries to constant-fold symbols in the left-hand side of the symbolic
expression whenever it fails to evaluate the expression directly. However, it
only constant-folds them when they are atomic expressions, not when they are
complicated expressions themselves. This patch adds recursive constant-folding
to the left-hand side subexpression (there's a lack of symmetry because we're
trying to have symbols on the left and constants on the right). As an example,
we'd now be able to handle operations similar to "$x + 1 < $y", when $x is
constrained to a constant.

rdar://problem/31354676

Differential Revision: https://reviews.llvm.org/D31886

llvm-svn: 300178

bot failures.

llvm-svn: 300177

RELRO is a feature to make segments read-only after dynamic relocations
are applied. It is different from read-only segments because RELRO is
initially writable. And of course RELRO is different from writable
segments.

RELRO is not a very well known feature. We have a series of checks to
make a decision whether a section should be in a RELRO segment or not,
but we didn't describe why. This patch adds comments to explain how
that decision is made.

llvm-svn: 300176

llvm-svn: 300175

The bool type may be larger than the char type, so assuming we can cast from
bool to char and write a byte out to the stream is unsafe.

Hopefully this will get RPCUtilsTest.ReturnExpectedFailure passing on the bots.

llvm-svn: 300174

tests to be consistent with the Error tests.

llvm-svn: 300173

Same change as in r300168, but for invoke instead of call.

llvm-svn: 300172

Summary:
APInt is currently implemented with an unsigned BitWidth field first and then a uint_64/pointer union. Due to the 64-bit size of the union there is a hole after the bitwidth.

Putting the union first allows the class to be packed. Making it 12 bytes instead of 16 bytes. An APSInt goes from 20 bytes to 16 bytes.

This shows a 4k reduction on the size of the opt binary on my local x86-64 build. So this enables some other improvement to the code as well.

Reviewers: dblaikie, RKSimon, hans, davide

Reviewed By: davide

Subscribers: davide, llvm-commits

Differential Revision: https://reviews.llvm.org/D32001

llvm-svn: 300171

llvm-svn: 300170

[APInt] Generalize the implementation of tcIncrement to support adding a full 'word' by introducing tcAddPart. Use this to support tcIncrement, operator++ and operator+=(uint64_t). Do the same for subtract. NFCI.

llvm-svn: 300169

At the very least, we have CallInst::setIsNoInline() for adding the
noinline attribute to callsites, and I'm told alwaysinline seems to
work.

Thought of adding "not all attributes are guaranteed to work here". If
someone thinks that would be better (or has a better way of phrasing
that, etc.), happy to add it.

llvm-svn: 300168

This patch allows Error and Expected types to be passed to and returned from
RPC functions.

Serializers and deserializers for custom error types (types deriving from the
ErrorInfo class template) can be registered with the SerializationTraits for
a given channel type (see registerStringError in RPCSerialization.h for an
example), allowing a given custom type to be sent/received. Unregistered types
will be serialized/deserialized as StringErrors using the custom type's log
message as the error string.

llvm-svn: 300167

llvm-svn: 300165

path::iterator isn't a strictly conforming iterator. Specifically
it stashes the current element inside the iterator. This leads to
UB when used with reverse_iterator since it requires the element
to outlive the lifetime of the iterator.

This patch adds a static_assert inside reverse_iterator to disallow
"stashing iterator types", and it tags path::iterator as such a type.

Additionally this patch removes all uses of reverse_iterator<path::iterator>
within the tests.

llvm-svn: 300164

llvm-svn: 300163

Utility/UuidCompatibility.h which gets you a definiton
of uuid_t but none of the functions that operate on it.

llvm-svn: 300162

llvm-svn: 300161

This is a magic header file supported by the build system that provides a
single definition, LLVM_REVISION, containing an LLVM revision identifier,
if available. This functionality previously lived in the LTO library, but
I am moving it out to lib/Support because I want to also start using it in
lib/Object to create the IR symbol table.

This change also fixes a bug where LLVM_REVISION was never actually being
used in lib/LTO because the macro HAS_LLVM_REVISION was never defined (it
was misspelled as HAVE_SVN_VERSION_INC in lib/LTO/CMakeLists.txt, and was
only being defined in a non-existent file Version.cpp).

I also changed the code to use "git rev-parse --git-dir" to locate the .git
directory, instead of looking for it in the LLVM source root directory,
which makes this compatible with monorepos as well as git worktrees.

Differential Revision: https://reviews.llvm.org/D31985

llvm-svn: 300160

llvm-svn: 300159

std::unique_ptr's default constructor must be constexpr in order
to allow constant initialization to take place for static objects;
Even though we can never have a constexpr unique_ptr variable since
it's not a literal type.

This patch adds tests that constant initialization takes place by
using the __attribute__((require_constant_initialization)) macro.

llvm-svn: 300158

llvm-svn: 300157

llvm-svn: 300156

llvm-svn: 300155

The __unordered_map_equal and __unordered_map_hash wrappers
attempt to swap const qualified predicates whenever the predicate
is empty, and is subject to the EBO.

Swapping const values seems blatently incorrect. This patch removes
the const qualifier so the values are swapped as non-const.

llvm-svn: 300154

This seems like a much more natural API, based on Derek Schuff's
comments on r300015. It further hides the implementation detail of
AttributeList that function attributes come last and appear at index
~0U, which is easy for the user to screw up. git diff says it saves code
as well: 97 insertions(+), 137 deletions(-)

This also makes it easier to change the implementation, which I want to
do next.

llvm-svn: 300153

This patch fixes a bug where the =default default ctor for
__compressed_pair was incorrect for const qualified types.

llvm-svn: 300152

This test has apparently been broken for years, but we never noticed before
because it's a long test and long tests approximately never get run.

llvm-svn: 300151