[Clang][Driver] Fix compiler-rt library directory for cygwin (#208925)
If compiler-rt is built with `LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF`,
its search directory is incorrect.
Specifically, `ToolChain::getOSLibName()` returns `windows` instead of
`cygwin` in a Cygwin environment, due to falling back to getOS(). This
results in a link error against compiler-rt.
This patch makes `getOSLibName()` return `cygwin`, ensuring that
compiler-rt is linked correctly.
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Signed-off-by: Takashi Yano <takashi.yano at nifty.ne.jp>
[KnownBits] Use X < Y identity and umin(MaxX, MaxY - 1) bound in urem (#210262)
Tightens `KnownBits::urem` with the two facts `ConstantRange::urem`
already uses:
- `L % R == L` when `MaxL < MinR`: return the LHS bits unchanged. This
can propagate known one bits, which the current leading-zeros-only
reasoning never produces.
- `L % R <= umin(MaxL, MaxR - 1)`, since a zero divisor is UB: keep that
bound's leading zeros. This is one bit stronger than the per-operand
leading-zero count when `MaxR` is a power of two, and together with
`remGetLowBits` it subsumes the power-of-two-constant special case,
which is removed.
Soundness is covered by the existing exhaustive unit test (widths 1 and
4; additionally brute-forced at width 5). Across all 6480 valid width-4
KnownBits pairs, non-optimal results drop from 3332 to 2090. The
residual is number-theoretic (e.g. the exact value of `10 % 3`), out of
reach of leading-bit/range reasoning, so `CheckOptimality` stays off for
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[AArch64][GlobalISel] Add sign bits for G_VASHR (#210269)
Ports the `AArch64ISD::VASHR` case from
`ComputeNumSignBitsForTargetNode` to the GlobalISel hook: an arithmetic
right shift by K adds K copies of the sign bit, so the result has
`min(SignBits(Src) + K, ScalarSizeInBits)` sign bits. `G_VASHR`'s shift
amount is always an immediate in `[1, ElementBits]`.
Follow-up to #198314, which added the `G_FCM*` cases.
Assisted by Claude (Anthropic).
Revert "[LLD] [COFF] Fix linking directly against an ARM64X DLL without import library (#210080)" (#210299)
This reverts commit a3bcc010c7b7d5fa43ab7928a88312841c4322dd, which
breaks in asan build.
[LLVM][Verifier] Remove constant-only matrix stride check (#207665)
Remove the verifier check requiring constant column-major matrix
load/store strides to be greater than or equal to the row count.
The stride operand is not an immarg, so the verifier must not enforce
constraints that only apply when the argument happens to be constant.
[Clang][Sema] Fix crash in UnresolvedMemberExpr check (#209792)
This closes https://github.com/llvm/llvm-project/issues/209427
The test currently crashes because while iterating over the candidate
members of an unresolved member expression, `decl` is a `UsingShadowDecl`
with underlying decl as `UnresolvedUsingValueDecl`.
The current `isa<UnresolvedUsingValueDecl>(decl)` guard only checks the
outer `UsingShadowDecl` and misses the unresolved-using decl hidden
inside it, so `getAsFunction()` returns nullptr and
`cast<CXXMethodDecl>(nullptr)` asserts.
This patch checks the `UnresolvedUsingValueDecl` inside by calling
`getUnderlyingDecl()` before the guard.
This used to happen before a2794f9f363361f87a3538b90b78ff13381d5ce1.
libtorrent rtorrent: updated to 0.16.18
0.16.18
Encryption settings have changed to be easier to use, and changing listen or DHT ports can be done while rtorrent is running.
nsis: updated to 3.12
3.12
Security
Don't use the Low IL temp directory when elevated
This stops a possible privilege escalation for installers running as SYSTEM.
Minor Changes
Added StartsWith[S], EndsWith[S], Contains[S], IsLowerCase and IsUpperCase LogicLib operators.
Build System
Support Python older than 3.6 again
Preliminary ARM64 support in makensis.nsi
