[InstallAPI] [Tests] Avoid checking compiler output for 'error' (#188307)
We have two tests that use FileCheck for diagnostics and which try to
check that the output contains no compiler errors by checking for the
string 'error'. The issue with this approach is that this also causes
those tests to fail if the *path* contains the word 'error', which can
happen e.g. if the branch name contains the word 'error'.
Instead, we now check for `error:` since that string is much less likely
to appear in a path.
[lldb] Fix immediately-destroyed ScopedTimeout in KillProcess (#188333)
The ScopedTimeout was created as a temporary, causing it to be destroyed
immediately and the timeout to have no effect. Give it a name so it
lives until the end of the function scope.
[SLP] Fix infinite loop in ordered reduction worklist processing (#188342)
The ordered reduction support introduced in 94e366ef2060 can cause an
infinite loop when processing complex reduction chains. The worklist
algorithm re-adds instructions from PossibleOrderedReductionOps when
switching to ordered mode, but doesn't track which instructions have
already been processed. This allows instructions to be re-added and
processed multiple times, creating cycles.
Add a Visited set to track processed instructions and skip any that
have already been handled, preventing the infinite loop.
[ORC] Add EPCGenericJITLinkMemoryManager::Create named constructor. (#188191)
Create takes a JITDylib and a SymbolNames struct, looks up the
implementation symbol addresses in the given JITDylib, and uses them to
construct an EPCGenericJITLinkMemoryManager instance. This makes it
easier for ORC clients to construct the memory manager from named
symbols (e.g. in a bootstrap JITDylib) rather than raw addresses.
[clang][AST] Fix LazyGenerationalUpdatePtr NumLowBitsAvailable on 32-bit (#188318)
The `PointerLikeTypeTraits` for `LazyGenerationalUpdatePtr` claimed
`PointerLikeTypeTraits<T>::NumLowBitsAvailable - 1` spare low bits. This
assumed that the inner `PointerUnion<T, LazyData*>` has `T_bits - 1`
spare bits, which is only true when `alignof(LazyData) >= alignof(*T)`.
On 32-bit systems, `LazyData` (containing pointers and `uint32_t`) has
`alignof = 4`, giving `LazyData*` only 2 low bits. With `T = Decl*` (3
bits due to `alignas(8)`), the inner `PointerUnion` has `min(3,2) - 1 =
1` spare bit, but the PLTT claimed `3 - 1 = 2`.
Historically, the formula was correct when introduced in 053f6c6c9e4d --
at that time `Decl` had no alignment annotation, so `T_bits ==
LazyData*_bits` on all platforms. It became outdated when 771721cb35f3
added `LLVM_ALIGNAS(8)` to `Decl`, raising `Decl*` to 3 bits on 32-bit
while `LazyData*` stayed at 2. The old `PointerIntPair`-based
`PointerUnion::doCast` happened to mask with `minLowBitsAvailable()`
(tolerant of overclaims), so this was never exposed until the
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[SelectionDAG] Add known bit for `ISD::FABS` (#188335)
Absolute value always clears the sign bit, so make that knowh to
selectionDAG's `computeKnownBits`.
Fix implicit val for OpenMP >= 52 and don't rely on static variables in processLinear
- Emit val for implicit linear clause if openmp version >= 52
- Turn `typeAttrs` and `linearModAttrs` from static to local to
avoid confusions about cleaning stale value
Fix implicit val for OpenMP >= 52 and don't rely on static variables in processLinear
- Emit val for implicit linear clause if openmp version >= 52
- Turn `typeAttrs` and `linearModAttrs` from static to local to
avoid confusions about cleaning stale value
[libc][strings] Refactor load_aligned for cleaner endianness handling (#186360)
Replace the explicit `if constexpr` branching for big and little
endianness with compile-time calculated shift constants `VAL_SHIFT` and
`NEXT_SHIFT`. This simplifies the logic and reduces code duplication,
relying on the compiler to constant-fold the zero shifts into no-ops.
[lldb][trace] Ensure ProcessTrace plugin can be re-registered (#188336)
Initialize makes sure that it calls RegisterPlugin only once, but
Terminate always calls UnregisterPlugin. This is a problem for tests
that call Initialize/Terminate before and after each test case: the
second case will fail because the trace plugin won't be loaded.
This fixes a test failure introduced by #187768, which adds a test case
that passes on its own but fails when run after the previous test case.
[HLSL] Implement TableGen for builtin HLSL intrinsics (#187610)
This PR introduces a TableGen-based code generation system for HLSL
intrinsic overloads as described in proposal
[[0043]](https://github.com/llvm/wg-hlsl/blob/main/proposals/0043-hlsl-intrinsic-tablegen.md)
for replacing hand-written boilerplate with declarative .td definitions.
Actual changes to `hlsl_intrinsics.h` and `hlsl_alias_intrinsics.h` to
replace handwritten HLSL intrinsic overloads with TableGen is left to
follow-up PRs.
Assisted-by: GitHub Copilot (powered by Claude Opus 4.6)
[CodeGen][NewPM] Mark ExpandPostRAPseudos as required (#188304)
We need to lower these pseudoinstructions regardless of optimization
level or we end up with instructions that we cannot print.
