Sometimes, symbols are present that point to the end of a section (i.e.,
one-past the highest valid address). Currently, BOLT either rejects
those symbols when they don't point to another existing section, or errs
when they do and the other section is not executable. I suppose BOLT
would accept the symbol when it points to an executable section.

In any case, these symbols should not be considered while discovering
functions and should not result in an error. This patch implements that.

Note that this patch checks explicitly for symbols whose value equals
the end of their section. It might make more sense to verify that the
symbol's value is within [section start, section end). However, I'm not
sure if this could every happen *and* its value does not equal the end.

Another way to implement this is to verify that the BinarySection we
find at the symbol's address actually corresponds to the symbol's
section. I'm not sure what the best approach is so feedback is welcome.

Reviewed By: yota9, rafauler

Differential Revision: https://reviews.llvm.org/D146215

We can fold equality comparisons of non-inbounds geps to offset
comparison (https://alive2.llvm.org/ce/z/x2Zp8b). The inbounds
requirement is only necessary for relational comparisons.

For fully promoted variables dbg.assigns and dbg.values convey the same
information and can be used interchangeably. This patch converts dbg.assigns to
dbg.values for variables promoted by mem2reg. This reduces resource usage by
reducing the amount of unnecessary function local metadata. The compile time
tracker reports that CTMark projects build with LTO-O3-g with 0.4% fewer
instructions retired and peak memory usage is reduced by 2.2%.

Reviewed By: jryans

Differential Revision: https://reviews.llvm.org/D145511

For equality comparisons, we don't need the gep to be inbounds:
https://alive2.llvm.org/ce/z/Fe_kn2

[mlir][Linalg][Transform] Fix effect on RewriteInDestinationPassingStyleOp that did not consume its operand

...rather than using DenseMaps to track per-variable information.

Rather than tracking 3 maps of {VariableID: SomeInfo} per block, use a
BitVector indexed by VariableID to mask 3 vectors of SomeInfo.

BlockInfos now need to be initialised with a call to init which sets the
BitVector width to the number of partially promoted variables in the function
and fills the vectors with Top values.

Prior to this patch, in joinBlockInfo, it was necessary to insert Top values
into the Join result for variables in A XOR B after joining the variables in A
AND B. Now, because the vectors are pre-filled with Top values we need only
join the variables A AND B and set the BitVector of tracked variables to A OR
B.

The patch achieves an average of 0.25% reduction in instructions retired and a
1.1% max-rss for the CTMark suite in LTO-O3-g builds.

Reviewed By: scott.linder

Differential Revision: https://reviews.llvm.org/D145558

Reviewed By: scott.linder

Differential Revision: https://reviews.llvm.org/D146232

Previously we only looked at the si_signo field, so you got:
```
(lldb) bt
* thread #1, name = 'a.out.mte', stop reason = signal SIGSEGV
  * frame #0: 0x00000000004007f4
```
This patch adds si_code so we can show:
```
(lldb) bt
* thread #1, name = 'a.out.mte', stop reason = signal SIGSEGV: sync tag check fault
  * frame #0: 0x00000000004007f4
```

The order of errno and code was incorrect in ElfLinuxSigInfo::Parse.
It was the order that a "swapped" siginfo arch would use, which for Linux,
is only MIPS. We removed MIPS Linux support some time ago.

See:
https://github.com/torvalds/linux/blob/fe15c26ee26efa11741a7b632e9f23b01aca4cc6/include/uapi/asm-generic/siginfo.h#L121

A test is added using memory tagging faults. Which were the original
motivation for the changes.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D146045

Rather than handling all instruction types separately, clone the
original instruction and replace the select operand.

Correctly create the temporary for argument absent in the entry statement.

Reviewed By: PeteSteinfeld

Differential Revision: https://reviews.llvm.org/D146447

MergeFuncs currently merges load instructions with differing
semantically-relevant metadata, e.g. a load that has !nonnull
with one that does not.

Update FunctionComparator to make sure that metadata of both
loads is the same. Alternatively, it would be possilbe to ignore
the metadata during comparison, and then drop it during merging.

Differential Revision: https://reviews.llvm.org/D144682

Differential Revision: https://reviews.llvm.org/D146382

Reviewed By: skan

Differential Revision: https://reviews.llvm.org/D146502

D138249 renamed a number of wasm intrinsics without implementing
auto-upgrade support.

Differential Revision: https://reviews.llvm.org/D146424

Combine binary operator of two phi node if there is at least one
specific constant value in phi0 and phi1's incoming values for each
same incoming block and this specific constant value can be used
to do optimization for specific binary operator.
For example:
```
%phi0 = phi i32 [0, %bb0], [%i, %bb1]
%phi1 = phi i32 [%j, %bb0], [0, %bb1]
%add = add i32 %phi0, %phi1
==>
%add = phi i32 [%j, %bb0], [%i, %bb1]
```

Fixes: https://github.com/llvm/llvm-project/issues/61137

Differential Revision: https://reviews.llvm.org/D145223

Each emitter became self-contained since it has the registration of option.

Differential Revision: https://reviews.llvm.org/D144351

Differential Revision: https://reviews.llvm.org/D144351

Differential Revision: https://reviews.llvm.org/D144351

`Opt(flag, func, desc)` registers an option into `Action`.

`OptClass<EmitterC>` is also available if `EmitterC(RK).run(OS)` is capable.

`Action` is defined as `ManagedStatic<cl::opt>` to guarantee to be created
when each registration of emitter is invoked.

`llvm::TableGenMain(argv0, MainFn)` invokes `Action` instead of `MainFn`

Differential Revision: https://reviews.llvm.org/D144351

This reverts commit fb3f6a95.

This patch is to support D145650 for elf target as well.

Differential Revision: https://reviews.llvm.org/D146489

This patch adds the AANonConvergent abstract attribute. It removes the
convergent attribute from functions that only call non-convergent
functions.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D143228

Instead of having a separate single letter and multiletter ranking
use a unified rank that assigns multiletter a larger value than
single letter.

Once we've ranked the extensions, then we compare using these ranks.

Reviewed By: kito-cheng

Differential Revision: https://reviews.llvm.org/D146273

Update affine analysis method `addInductionVarOrTerminalSymbol` for
affine.parallel IV.

Fixes https://github.com/llvm/llvm-project/issues/61371

Reviewed By: dcaballe

Differential Revision: https://reviews.llvm.org/D146493

fixed: #59095
Update libcall signatures to use multivalue return rather than returning via a pointer
when the multivalue features is enabled in the WebAssembly backend.

Reviewed By: tlively

Differential Revision: https://reviews.llvm.org/D146271

The 'ELPM' instruction has three forms:

--------------------------
| form        | feature  |
| ----------- | -------- |
| ELPM        | hasELPM  |
| ELPM Rd, Z  | hasELPMX |
| ELPM Rd, Z+ | hasELPMX |
--------------------------

The second form is always used in the expansion of the pseudo
instruction 'ELPMBRdZ'. But for devices without ELPMX but only
with ELPM, only the first form can be emitted.

Reviewed By: jacquesguan

Differential Revision: https://reviews.llvm.org/D141221

/Users/jiefu/llvm-project/llvm/tools/llvm-readobj/ELFDumper.cpp:7175:5: error: call to member function 'printNumber' is ambiguous
  W.printNumber("TotalBuckets", NBucket);
  ~~^~~~~~~~~~~
/Users/jiefu/llvm-project/llvm/include/llvm/Support/ScopedPrinter.h:201:16: note: candidate function
  virtual void printNumber(StringRef Label, uint64_t Value) {
               ^
/Users/jiefu/llvm-project/llvm/include/llvm/Support/ScopedPrinter.h:205:16: note: candidate function
  virtual void printNumber(StringRef Label, uint32_t Value) {
               ^
/Users/jiefu/llvm-project/llvm/include/llvm/Support/ScopedPrinter.h:209:16: note: candidate function
  virtual void printNumber(StringRef Label, uint16_t Value) {
               ^
/Users/jiefu/llvm-project/llvm/include/llvm/Support/ScopedPrinter.h:213:16: note: candidate function
  virtual void printNumber(StringRef Label, uint8_t Value) {
               ^
/Users/jiefu/llvm-project/llvm/include/llvm/Support/ScopedPrinter.h:217:16: note: candidate function
  virtual void printNumber(StringRef Label, int64_t Value) {
               ^
/Users/jiefu/llvm-project/llvm/include/llvm/Support/ScopedPrinter.h:221:16: note: candidate function
  virtual void printNumber(StringRef Label, int32_t Value) {
               ^
/Users/jiefu/llvm-project/llvm/include/llvm/Support/ScopedPrinter.h:225:16: note: candidate function
  virtual void printNumber(StringRef Label, int16_t Value) {
               ^
/Users/jiefu/llvm-project/llvm/include/llvm/Support/ScopedPrinter.h:229:16: note: candidate function
  virtual void printNumber(StringRef Label, int8_t Value) {
               ^
/Users/jiefu/llvm-project/llvm/include/llvm/Support/ScopedPrinter.h:237:16: note: candidate function
  virtual void printNumber(StringRef Label, float Value) {
               ^
/Users/jiefu/llvm-project/llvm/include/llvm/Support/ScopedPrinter.h:241:16: note: candidate function
  virtual void printNumber(StringRef Label, double Value) {
               ^

According to the discussion in
https://discourse.llvm.org/t/rfc-could-we-mark-coroutines-as-unreleased-now/69220

We should mark coroutines as "it’s supported fully everywhere but on
Windows targets".

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D146187

Should fix Windows buildbot:
https://lab.llvm.org/buildbot/#/builders/127/builds/45411

when certain flags are specified, the Crt0 object files are not linked.
However, the logic for determining which files will always run. This
patch moves that logic so that the basename is only determined if it is
needed.

Differential Revision: https://reviews.llvm.org/D146443