This patch enables epilogue vectorization by default per reviewer requests.

Differential Revision: https://reviews.llvm.org/D89566

When we annotating a function header so that it could be used by other
TU, we also need to make sure the function is parsed correctly within
the same TU. So if we can find the function's implementation,
ignore the annotations, otherwise, false positive would occur.
Move the escape by value case to post call and do not escape the handle
if the function is inlined and we have analyzed the handle.

Differential Revision: https://reviews.llvm.org/D91902

Add some clause validity tests for the kernels directive

Reviewed By: sameeranjoshi

Differential Revision: https://reviews.llvm.org/D91873

Differential Revision: https://reviews.llvm.org/D92125

[libc++] [docs] Mark LWG3055 as complete. Use string_view instead of string in path::operator+=(ECharT).

The issue didn't change the behaviour which is tested in libcxx/test/std/input.output/filesystems/class.path/path.member/path.concat.pass.cpp.

The change to use string_view instead of string is not strictly necessary.

<filesystem> was added in commit 998a5c88 (Implement <filesystem>).

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D92731

This patch adds the ConstraintElimination pass to the LTO pipeline and
also runs it after SCCP in the function simplification pipeline.

This increases the number of cases we can elimination. Pending further
tuning.

Emit error for use of 128-bit integer inside device code had been
already implemented in https://reviews.llvm.org/D74387.  However,
the error is not emitted for SPIR64, because for SPIR64, hasInt128Type
return true.

hasInt128Type: is also used to control generation of certain 128-bit
predefined macros, initializer predefined 128-bit integer types and
build 128-bit ArithmeticTypes.  Except predefined macros, only the
device target is considered, since error only emit when 128-bit
integer is used inside device code, the host target (auxtarget) also
needs to be considered.

The change address:
1. (SPIR.h) Correct hasInt128Type() for SPIR targets.
2. Sema.cpp and SemaOverload.cpp: Add additional check to consider host
   target(auxtarget) when call to hasInt128Type.  So that __int128_t
   and __int128() are allowed to avoid error when they used outside
   device code.
3. SemaType.cpp: add check for SYCLIsDevice to delay the error message.
   The error will be emitted if the use of 128-bit integer in the device
   code.

   Reviewed By: Johannes Doerfert and Aaron Ballman

   Differential Revision: https://reviews.llvm.org/D92439

The xxeval instruction was intorduced in Power PC in Power 10.
The instruction accepts three vector registers and an immediate.
Depending on the value of the immediate the instruction can be used
to perform certain bitwise boolean operations (and, or, xor, ...) on
the given vector registers.

This patch implements the AND and NAND patterns that can be used by
the instruction.

Reviewed By: nemanjai, #powerpc, bsaleil, NeHuang, jsji

Differential Revision: https://reviews.llvm.org/D92420

I have a patch that adds another group of candidate types to
BuiltinCandidateTypeSet.  Currently two styles are in use: the older
begin/end pairs and the newer iterator_range approach.  I think the
group of candidates that I want to add should use iterator ranges,
but I'd also like to consolidate the handling of the new candidates
with some existing code that uses begin/end pairs.  This patch therefore
converts the begin/end pairs to iterator ranges as a first step.

No functional change intended.

Differential Revision: https://reviews.llvm.org/D92222

A rotate by half the bitwidth swaps the bottom and top half which is the same as one of the MSB GREVI stage.

We have to do this as a special combine because we prefer to keep (rotl/rotr X, BitWidth/2) as a rotate rather than a single stage GREVI.

Differential Revision: https://reviews.llvm.org/D92286

Replace '|' with '||' in condition, and fix case of SignedMode variable.

Check the entire assertion condition before && with the message.

Add support to normalize affine.for ops i.e., convert the lower bound to zero
and loop step to one. The Upper bound is set to the trip count of the loop.
The exact value of loopIV is calculated just inside the body of affine.for.
Currently loops with lower bounds having single result are supported. No such
restriction exists on upper bounds.

Differential Revision: https://reviews.llvm.org/D92233

Check pointer returned by strchr, as it can be NULL in case of broken
format of input string. Introduced new function __kmp_str_loc_numbers
for fast parsing of numbers only in the location string.
Also made some cleanup of __kmp_str_loc_init declaration and usage:
- changed type of init_fname parameter to bool;
- changed input from true to false in places where fname is not used.

Differential Revision: https://reviews.llvm.org/D90962

This new stencil combinator is intended for use in diagnostics and the like.

Differential Revision: https://reviews.llvm.org/D92658

It is possible to merge reuse and reorder shuffles and reduce the total
cost of the ivectorization tree/number of final instructions.

Differential Revision: https://reviews.llvm.org/D92668

This adds code to revert low overhead loops with calls in them before
register allocation. Ideally we would not create low overhead loops with
calls in them to begin with, but that can be difficult to always get
correct. If we want to try and glue together t2LoopDec and t2LoopEnd
into a single instruction, we need to ensure that no instructions use LR
in the loop. (Technically the final code can be better too, as it
doesn't need to use the same registers but that has not been optimized
for here, as reverting loops with calls is expected to be very rare).

It also adds a MVETailPredUtils.h header to share the revert code
between different passes, and provides a place to expand upon, with
RevertLoopWithCall becoming a place to perform other low overhead loop
alterations like removing copies or combining LoopDec and End into a
single instruction.

Differential Revision: https://reviews.llvm.org/D91273

The table section goes after functions.

Differential Revision: https://reviews.llvm.org/D92323

Clean up QPX code in clang missed in https://reviews.llvm.org/D83915

Reviewed By: #powerpc, steven.zhang

Differential Revision: https://reviews.llvm.org/D92329

This patch changes the archive handling to enable the semantics needed
for legacy FORTRAN common blocks and block data. When we have a COMMON
definition of a symbol and are including an archive, LLD will now
search the members for global/weak defintions to override the COMMON
symbol. The previous LLD behavior (where a member would only be included
if it satisifed some other needed symbol definition) can be re-enabled with the
option '-no-fortran-common'.

Differential Revision: https://reviews.llvm.org/D86142

This reverts commit 09b08833.

This code is wrong on Linux, and causes ld-linux and linux-vdso to be
reported twice.  I need to work on it more.

Speeds up linking Chromium's base_unittests almost 10%. According to ministat:

    N           Min           Max        Median           Avg        Stddev
x   5    0.72193289    0.73073196    0.72560811    0.72565799  0.0032265649
+   5    0.64069581    0.67173195    0.65876389    0.65796089   0.011349451
Difference at 95.0% confidence
	-0.0676971 +/- 0.0121682
	-9.32906% +/- 1.67685%
	(Student's t, pooled s = 0.00834328)

Differential Revision: https://reviews.llvm.org/D92734

Add vcp and vex intrinsic instructions and regression tests.

Reviewed By: simoll

Differential Revision: https://reviews.llvm.org/D92752

The refineIndexType & refineUniformBase functions added by D90942 can also be used to
improve CodeGen of masked gathers.

These changes were split out from D91092

Reviewed By: sdesmalen

Differential Revision: https://reviews.llvm.org/D92319

NFC, to make the test more robost.

Mubuf rtn atomics use GLC_1 thus default value for glc operand
should be -1, see https://reviews.llvm.org/D90730.
This allows us to report error when rtn atomic requires glc=1
but does not have glc operand in input.

Differential Revision: https://reviews.llvm.org/D92654

Lowers the llvm.masked.gather intrinsics (scalar plus vector addressing mode only)

Changes in this patch:
- Add custom lowering for MGATHER, using getGatherVecOpcode() to choose the appropriate
  gather load opcode to use.
- Improve codegen with refineIndexType/refineUniformBase, added in D90942
- Tests added for gather loads with 32 & 64-bit scaled & unscaled offsets.

Reviewed By: sdesmalen

Differential Revision: https://reviews.llvm.org/D91092

Using bools instead of integers better conveys the expected value of the option.

Reviewed By: Eugene.Zelenko, aaron.ballman

Differential Revision: https://reviews.llvm.org/D92652

Previously, loading one from a file meant allowing the library to do the IO.
Clangd would prefer to do such IO itself (e.g. to allow caching).

Differential Revision: https://reviews.llvm.org/D92640

This rewrites the logic to get rid of "ELFSymbolRef" API where possible.
This allowed to handle possible errors better, improve warnings reported and add new ones.
Also 'reportWarning' was replaced with 'reportUniqueWarning'

Differential revision: https://reviews.llvm.org/D92545