[LangRef] Mention allocation elision (#177592)
allockind / alloc-family enable allocation elision, but this was not
previously mentioned by LangRef.
Related discussion:
https://discourse.llvm.org/t/rfc-clarifying-semantic-assumptions-for-custom-allocators/89469
The semantics here are specified in terms of allowed transforms.
Making the semantics operational is tracked in #184102.
[AMDGPU] IGroupLP: Avoid repeating reachability checks in greedy algorithm (#182463)
In the greedy pipeline solver, the group cost is found using the
addEdges function and the edges must be removed from the DAG after
processing each group. The best group edges are then reinserted using
the same function. This repeats the costly reachability checks inside
the function which become problematic for pipelines with many
SchedGroups.
The algorithm is changed to remember the best group edges instead of
recomputing them. Additionally, SchedGroup::tryAddEdge is refactored to
avoid a redundant cycle check which is already performed by DAG->addEdge.
[AArch64][GlobalISel] Limit srem by const of small sizes. (#184066)
The code in SignedDivisionByConstantInfo::get can only handle bitwidths
>= 3. This adds a check for bitwidth==1 for urem too, although it will
already have been simplified.
[libc] Reland add getc, ungetc, fflush to enable libc++ iostream on baremetal (#183556)
After https://github.com/llvm/llvm-project/pull/168931 landed getc,
ungetc and fflush are still missing at link time while trying to make
libc++ std::cout work with LLVM libc on baremetal.
ungetc implementation is very minimal only to cover the current standard
streams implementation from the patch above.
The original PR https://github.com/llvm/llvm-project/pull/175530 caused
build failure on Windows because of too long command line in the
generated *.bat file which was fixed by
https://github.com/llvm/llvm-project/issues/182374
[AMDGPU] IGroupLP: Refactor SchedGroup::initSchedGroup (NFC) (#184122)
There are three overloaded SchedGroup::initSchedGroup functions, two of
which are only used for specific types of SchedGroups, namely
SCHED_BARRIER and SCHED_GROUP_BARRIER. This seems to have a led to some
confusion since the different functions perform checks which are not
needed for their intended restricted use cases. Furthermore, there are
several wrong comments surrounding those functions.
Simplify the functions and inline the actual initialization parts of the
SCHED_BARRIER and SCHED_GROUP_BARRIER variants at their only call sites.
Extract a function that finds the candidate SUnits for a given
SchedGroup and use this instead of initSchedGroup. Fix comments.
[IR] Mark reduction intrinsics as nocreateundeforpoison (#184173)
In investigating #156233, it came up that select folds like here:
https://alive2.llvm.org/ce/z/Y6jzj6 cannot be carried out, or easily
fixed for now, because integer reductions do not propagate noundef, even
if their arguments are noundef. This patch adds this propagation.
[lldb][RISCV] Support RVV register access
Support RISC-V vector register context (2/3)
Add support for reading and writing RISC-V vector (RVV) registers
through the native register context on Linux. This enables LLDB to
access all 32 vector registers (v0–v31) and the vector CSR registers
during debugging sessions.
[lldb][RISCV] Add vector VCSR register definitions
Support RISC-V vector register context (1/3)
Add definitions for RISC-V vector CSRs to support RVV debugging.
This includes the vstart, vl, vtype, vcsr, and vlenb registers,
which control the vector operation state and behavior.
py-xml2rfc: updated to 3.32.0
3.32.0
New Features
- Drop support for Python 3.9
Bug Fixes
- Remove duplicate anchors from authors
- text: Avoid word breaks
