Breaks bots
https://lab.llvm.org/buildbot/#/builders/236/builds/2349
https://lab.llvm.org/buildbot/#/builders/74/builds/17361
https://lab.llvm.org/buildbot/#/builders/168/builds/11972

This reverts commit 7be55b00.

Given concat(zip1(a, b), zip2(a, b)), we can convert that to a 128bit zip1(a, b)
if we widen a and b out first.

Fixes #54226

Differential Revision: https://reviews.llvm.org/D121088

Add cases for the following ops:
    - 0-X            -- https://alive2.llvm.org/ce/z/6C75Li
    - bitreverse(X)  -- https://alive2.llvm.org/ce/z/SGG1q9
    - bswap(X)       -- https://alive2.llvm.org/ce/z/p7pzwh
    - ctpop(X)       -- https://alive2.llvm.org/ce/z/c5y3BC
    - abs(X)         -- https://alive2.llvm.org/ce/z/yxXGz_
                        https://alive2.llvm.org/ce/z/rSRg4K
    - uadd_sat(X, Y) -- https://alive2.llvm.org/ce/z/Zw-y4W
                        https://alive2.llvm.org/ce/z/2NRqRz
                        https://alive2.llvm.org/ce/z/M1OpF8

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D142828

Add cases for the following ops:
    - 0-X
    - bitreverse(X)
    - bswap(X)
    - ctpop(X)
    - abs(X)
    - uadd_sat(X, Y)

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D142827

[ValueTracking] Add KnownBits patterns `xor(x, x - 1)` and `and(x, -x)` for knowing upper bits to be zero

These two BMI pattern will clear the upper bits of result past the
first set bit. So if we know a single bit in `x` is set, we know that
`results[bitwidth - 1, log2(x) + 1] = 0`.

Alive2:
blsmsk: https://alive2.llvm.org/ce/z/a397BS
blsi: https://alive2.llvm.org/ce/z/tsbQhC

Differential Revision: https://reviews.llvm.org/D142271

Differential Revision: https://reviews.llvm.org/D142270

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D142519

* Deployment Versions for targets
* Run Search Paths
* Text vs Data Segment attributes to symbols

Reviewed By: pete

Differential Revision: https://reviews.llvm.org/D144158

"TableGenBackends.h" has declarations of emitters.

The extending loads combine tries to prefer sign-extends folding into loads vs
zexts, and in cases where a G_ZEXTLOAD is first used by a G_ZEXT, and then used
by a G_SEXT, it would select the G_SEXT even though the load is already
zero-extending.

Fixes issue #59630

This reverts commit 5356fefc.

It looks like Polly still relies on the legacy SCCP pass. Bring it back
until the best way forward is determined.

While working on the formatter for the thread::id several minor issues
where spotted. This fixes them.

This is part of the optimization pipeline, of which the legacy pass manager version is deprecated.

Reviewed By: aeubanks

Differential Revision: https://reviews.llvm.org/D144201

This patch adds a subset of PowerPC intrinsics - fmadd,
fmsub, fnmadd and fnmsub.

Differential Revision: https://reviews.llvm.org/D143951

This is similar to ADRP and matches GNU objdump:

GNU objdump:
```
0000000000200100 <_start>:
  200100:    adr    x0, 201000 <_start+0xf00>
```

llvm-objdump (before patch):
```
0000000000200100 <_start>:
  200100:    adr    x0, #3840
```

llvm-objdump (after patch):
```
0000000000200100 <_start>:
  200100:    adr    x0, 0x201000 <_start+0xf00>
```

Reviewed By: simon_tatham, peter.smith

Differential Revision: https://reviews.llvm.org/D144079

This should fix https://github.com/rust-lang/rust/issues/107681.

Return undefined to a noundef return value is undefined.

Example:

```
define noundef i32 @test_ret_noundef(i1 %cond) {
entry:
  br i1 %cond, label %bb1, label %bb2
bb1:
  br label %bb2
bb2:
  %r = phi i32 [ undef, %entry ], [ 1, %bb1 ]
  ret i32 %r
}
```

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D144319

issue #60799
issue #60801

Reviewed By: #libc, philnik

Spies: Mordante, paulkirth, libcxx-commits

Differential Revision: https://reviews.llvm.org/D144307

Depends on D142808

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D143383

Signed-off-by: eop Chen <eop.chen@sifive.com>

Avoids warnings in -asserts builds.

ASTContext.cpp:4098:1: error: non-void function does not return a value in all control paths [-Werror,-Wreturn-type]
}
^

Addresses Github issue [[ https://github.com/llvm/llvm-project/issues/60317 | #60317 ]].

Reviewed By: klausler

Differential Revision: https://reviews.llvm.org/D143469

Introduce initial reader for TBDv5 which is in JSON. This captures all
the currently understood fields within the internal structure
`InterfaceFile`.
New fields will be followed up in future PRs.

Reviewed By: pete

Differential Revision: https://reviews.llvm.org/D144156

The only instruction of this format is VEX encoding

Allocation actions may run JIT'd code, which isn't permitted in -noexec mode.

Testcases that depend on actions running should be moved to the ORC runtime.

This caused false positives because the existing logic was not taking into account that pointers could have a tag in them.

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D144305

This patch introduces a new type __externref_t that denotes a WebAssembly opaque
reference type. It also implements builtin __builtin_wasm_ref_null_extern(),
that returns a null value of __externref_t. This lays the ground work
for further builtins and reference types.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D122215

~TaskAsyncInfoWrapperTy() calls isDone. With synchronize inside isDone, we need to handle the error return from synchronize in the destructor.
The consumers of TaskAsyncInfoWrapperTy, targetDataMapper and targetKernel, both call AsyncInfo.synchronize() before exiting.
For this reason in ~TaskAsyncInfoWrapperTy(), calling synchronize() via isDone() is redundant.
This patch removes synchronize() call inside isDone() and makes it a lightweight check.
__tgt_target_nowait_query needs to call synchronize() before checking isDone().

Differential Revision: https://reviews.llvm.org/D144315

Also stop caring about typed pointers.

[flang] Adding fir::getSymbolAttrName attribute to the function corresponding to the main subprogram.
This is because the source name cannot be deconstructed from _QQmain

Differential revision: https://reviews.llvm.org/D144295

Experimental support for the zfa extension was recently added in https://reviews.llvm.org/D141984. A couple of the normal test changes and clang plumbing got missed in that change. This commit updates the usual suspects.

Differential Revision: https://reviews.llvm.org/D144288