Changes

[COFF] Check table ptr more thoroughly and ignore empty sections

When loading split debug files for PE/COFF executables (produced with
`objcopy --only-keep-debug`), the tables or directories in such files
may point to data inside sections that may have been stripped.
COFFObjectFile shall detect and gracefully handle this, to allow the
object file be loaded without considering these tables or directories.
This is required for LLDB to load these files for use as debug symbols.

COFFObjectFile shall also check these pointers more carefully to account
for cases in which the section contains less raw data than the size
given by VirtualSize, to prevent going out of bounds.

This commit also changes COFFDump in llvm-objdump to reuse the pointers
that are already range-checked in COFFObjectFile. This fixes a crash
when trying to dump the TLS directory from a stripped file.

Fixes https://github.com/mstorsjo/llvm-mingw/issues/284

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D126898

[COFF] Fix -Wredundant-move

[RISCV] Reduce scalar load/store isel patterns to a single ComplexPattern. NFCI

Previously we had 3 different isel patterns for every scalar load
store instruction.

This reduces them to a single ComplexPattern that returns the Base
and Offset. Or an offset of 0 if there was no offset identified

I've done a similar thing for the 2 isel patterns that match add/or
with FrameIndex and immediate. Using the offset of 0, I was also
able to remove the custom handler for FrameIndex. Happy to split that
to another patch.

We might be able to enhance in the future to remove the post-isel
peephole or the special handling for ADD with constant added by D126576.

A nice side effect is that this removes nearly 3000 bytes from the isel
table.

Differential Revision: https://reviews.llvm.org/D126932

[BOLT] Cache-Aware Tail Duplication

A new "cache-aware" strategy for tail duplication.

Differential Revision: https://reviews.llvm.org/D123050

[Attributes] Remove AttrSyntax and migrate uses to AttributeCommonInfo::Syntax (NFC)

This is setup for allowing hasAttribute to work for plugin-provided attributes

Differential Revision: https://reviews.llvm.org/D126902

llvm: cmake: set CMP0114 to OLD to avoid warning

Building with cmake 3.23.2+ produces warnings when using
LLVM_ENABLE_RUNTIMES. Set this policy to the existing behavior for now
to silence the warnings.

Fixes: https://github.com/llvm/llvm-project/issues/50122
Fixes: https://github.com/llvm/llvm-project/issues/54944

Reviewed By: phosek, penzn

Differential Revision: https://reviews.llvm.org/D126923

[MSAN] add dn_expand intercept.

This interceptor only addresses writes to inputs.  Reads of inputs are not checked.

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D126851

[LLVM] [NFC] remove unnecessary, confusing scope

Reviewed By: dmgreen

Differential Revision: https://reviews.llvm.org/D126935

Re-land "[mlir] Add integer range inference analysis""

This reverts commit 4e5ce2056e3e85f109a074e80bdd23a10ca2bed9.

This relands commit 1350c9887dca5ba80af8e3c1e61b29d6696eb240.

Reinstates the range analysis with the build issue fixed.

Differential Revision: https://reviews.llvm.org/D126926

[config] Remove LLVM_DEFAULT_TARGET_TRILE from config.h

It is redundant with llvm-config.h, which is always included by
config.h.

Port D12660 / d178f4fc895b432008fcd8a0a49a13d951fecfe4 from config.h to
llvm-config.h.

Update the gn build accordingly.

NFCI

[RISCV] Use SelectionDAG::isBaseWithConstantOffset in scalar load/store address matching.

Test changes are because isBaseWithConstantOffset uses computeKnownBits
and that is able to see that an earlier AND instruction guaranteed
alignment so that we can treat an OR as an ADD.

Reviewed By: reames

Differential Revision: https://reviews.llvm.org/D126970

[NFC] Fix issue on CMake Xcode build configuration.

add missing dependency for hlsl-resource-headers and clang-resource-headers.

Reviewed By: rastogishubham

Differential Revision: https://reviews.llvm.org/D126892

[MSAN] Exclude dn_expand test from Android.

Depends on 1a729bce8617

Differential Revision: https://reviews.llvm.org/D126981

[libc++] Forward more often to memmove in copy

In D122982 I accidentally disabled the memmove optimization. This re-enables it and adds more cases where copy forwards to memmove.
Fixes https://github.com/llvm/llvm-project/issues/33687

Reviewed By: var-const, #libc, ldionne

Spies: pkasting, ayzhao, dcheng, xbolva00, libcxx-commits

Differential Revision: https://reviews.llvm.org/D124328

CommandObjectRegexCommand shouldn't put two commands on the history stack.

It was putting the command the user typed, and then the resolved command in the
command history.  That caused up-arrow not to work correctly when the regex command
was invoked from a Python-command.  Plus it's just weird.

Differential Revision: https://reviews.llvm.org/D126789

[pseudo] Eliminate dependencies from clang-pseudo-gen. NFC

ClangBasic dependency eliminated by replacing our usage of
tok::getPunctuatorSpelling etc with direct use of the *.def file.

Implicit dependencies on clang-tablegen-targets removed as we manage to avoid
any transitive tablegen deps.

After these changes, `ninja clean; ninja pseudo-gen` runs 169 actions only
(basically Support and Demangle).

Differential Revision: https://reviews.llvm.org/D126731

[bazel] Port 95aff23e2921

[lld][WebAssembly] Remove unnecessary accessor methods. NFC

This is less code, and matches more closely the ELF linker.

Differential Revision: https://reviews.llvm.org/D126979

[pseudo] rename pseudo-gen -> clang-pseudo-gen. NFC

This name is not namespaced. Requested in D126717

Differential Revision: https://reviews.llvm.org/D126725

[pseudo] Add CLANG_PSEUDO_GEN cmake cache variable to avoid nested CMake invocation

Similar to LLVM_TABLEGEN, CLANG_TABLEGEN variables

Differential Revision: https://reviews.llvm.org/D126717

[clang][dataflow] Modify `optional` model to handle type aliases.

Previously, type aliases were not handled (and resulted in an assertion
firing). This patch generalizes the model to consider aliases everywhere (a
previous patch already considered aliases for optional-returning functions).

Differential Revision: https://reviews.llvm.org/D126972

[Matrix] Add dot product tests

LLVM LIT tests for our upcoming dot product lowering change

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D126942

[OpenMP] allow loc to be NULL in __kmp_determine_reduction_method for MSVC

MSVC may not supply source location information to kmpc_reduce passing
NULL for the value. The patch adds a check for the loc value being NULL
in kmp_determine_reduction_method.

Differential Revision: https://reviews.llvm.org/D126564

Revert "[X86] combineConcatVectorOps - add support for concatenation VSELECT/BLENDV nodes"

See the original commit for a testcase.

This reverts commit ea8fb3b6019642a3a032fd65588eb8460439d2f9.

[ARM] Make narrow push/pop in SEH prologues/epilogues where applicable

We intentionally disable Thumb2SizeReduction for SEH
prologues/epilogues, to avoid needing to guess what will happen with
the instructions in a potential future pass in frame lowering.

But for this specific case, where we know we can express the
intent with a narrow instruction, change to that instruction form
directly in frame lowering.

Differential Revision: https://reviews.llvm.org/D126948

[ARM] Make a narrow tMOVi8 where possible in SEH prologues

We intentionally disable Thumb2SizeReduction for SEH
prologues/epilogues, to avoid needing to guess what will happen with
the instructions in a potential future pass in frame lowering.

But for this specific case, where we know we can express the
intent with a narrow instruction, change to that instruction form
directly in frame lowering.

Differential Revision: https://reviews.llvm.org/D126949

[lld-macho] Addressed additional post-commit comments from  D126046

- fixed newlines
- renamed helper function for clarity
- added additional comment

Differential Revision: https://reviews.llvm.org/D126792

[libc++][test] Skip string_view tests for other vendors on older modes

`string_view` is supported all the way back to C++03 as an extension in
`libc++`, and so many of the tests run in all standards modes for all vendors.
This is unlikely desired by other standard library vendors using our test suite.
So, disable the tests for vendors other than `libc++` in these older standards
modes.

Differential Revision: https://reviews.llvm.org/D126850

[libc] Make expm1f correctly rounded when the targets have no FMA instructions.

Add another exceptional value and fix the case when |x| is small.

Performance tests with CORE-MATH project scripts:
With FMA instructions on Ryzen 1700:
```
$ ./perf.sh expm1f
LIBC-location: /home/lnt/experiment/llvm/llvm-project/build/projects/libc/lib/libllvmlibc.a
CORE-MATH reciprocal throughput   : 15.362
System LIBC reciprocal throughput : 53.194
LIBC reciprocal throughput        : 14.595
$ ./perf.sh expm1f --latency
LIBC-location: /home/lnt/experiment/llvm/llvm-project/build/projects/libc/lib/libllvmlibc.a
CORE-MATH latency   : 57.755
System LIBC latency : 147.020
LIBC latency        : 60.269
```
Without FMA instructions:
```
$ ./perf.sh expm1f
LIBC-location: /home/lnt/experiment/llvm/llvm-project/build/projects/libc/lib/libllvmlibc.a
CORE-MATH reciprocal throughput   : 15.362
System LIBC reciprocal throughput : 53.300
LIBC reciprocal throughput        : 18.020
$ ./perf.sh expm1f --latency
LIBC-location: /home/lnt/experiment/llvm/llvm-project/build/projects/libc/lib/libllvmlibc.a
CORE-MATH latency   : 57.758
System LIBC latency : 147.025
LIBC latency        : 70.304
```

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D123440

[bazel] Update build for config.h.cmake change

[RISCV] Pre-commit test cases for D126986. NFC