[LangRef] select: describe behavior for undef and poison (#208724)
The poison semantics is based on
https://llvm.org/docs/UndefinedBehavior.html#propagation-of-poison-through-select.
IMO this definitely should appear in the "semantics" section of the
`select` instruction. If this isn't part of the `select` semantics I
don't know what is.
The undef semantics are based on what Alive does.
[AArch64] NFCI: Simplify LowerVectorFP_TO_INT_SAT (part 2) (#207199)
This simplifies the logic a bit more, such that the flow of the lowering
is as follows:
* Try to promote if necessary (fp16/bf16 types or src < dst)
* Try to handle natively (satwidth == srcwidth == dstwidth)
* Otherwise use min/max + truncate.
[ConstraintElim] Look through post-increment in header EQ/NE compare. (#209199)
Extend the header-controlled induction handling to look through a
post-increment `PN + C` (constant C) on the compared value
For now, the new path is limited to deriving unsigned facts.
Alive2 Proof: https://alive2.llvm.org/ce/z/DCNeSr
PR: https://github.com/llvm/llvm-project/pull/209199
[NPM] Make few more passes required (#203511)
essentially a port of https://github.com/llvm/llvm-project/pull/148115.
matches legacy behaviour. MachineBlockPlacement is made optional since
it is optional in legacy as well. not sure if there was any reason to
make it required in NPM.
[lit] Add configurable slowest-test limit to --time-tests
Bare --time-tests still defaults to 20; --time-tests=N and --time-tests=all optionally control the slowest-test list shown in the histogram.
[AMDGPU] Support global address in V/S_MOV_B64 lowering (#203527)
Hit an issue where V_MOV_B64_PSEUDO had a global, which wasn't
previously handled.
Added support for this, and also for the S_MOV_B64_IMM_PSEUDO to make it
symmetrical.
Claude has been used for this commit, primarily assisting creating a
test.
relayd: reject duplicate Content-Length headers with 400
Only Host was marked unique, so a request with two Content-Length
fields was framed on the last value but forwarded with both, allowing
a backend to desync and smuggle a request past the filter rules. Mark
Content-Length unique so the second occurrence is rejected in kv_add().
OK kirill@
