[WebAssembly] Do not form minnum/maxnum (#184796)
For wasm, forming minnum/maxnum style ISD nodes is non-profitable,
because (in cases where any float min/max support exists at all), it has
pmin/pmax instructions that correspond to the fcmp+select semantics, or
relaxed_fmin/relaxed_fmax (for the nnan+nsz case) with even loser
semantics.
As such, return false from isProfitableToCombineMinNumMaxNum(), and also
respect that hook in the SDAGBuilder.
[RISCV][P-ext] Recognize vector shifts with splat build_vector shift amount. (#184909)
If the shift is created during LegalizeVectorOps, the shift amount
will be created as a build_vector. Splat_vector is formed by a later
DAGCombine. LegalizeVectorOps will visit the new shift before the
splat_vector can be created. Handle this case too
[DA] Fix the Weak Zero SIV tests when the coeff may be zero (#183736)
In the Weak Zero SIV tests, given two subscripts `{c0,+,a}` and `c1`,
when `c0 == c1`, the tests conclude that a dependency exists from the
former subscript at the first iteration to the latter subscript at every
iteration. However, this conclusion is correct only when `a` is not
zero, which was not being checked.
This patch adds non-zero checks for `a` in the Weak Zero SIV tests.
Fix the test cases added in #183735 .
deskutils/qownnotes: the port had been updated to version 26.3.3
Reduce vertical space to help Makefile maintainability by merging
sporadic use of helpers and two per-flavor conditionals into one;
drop needless default flavor assignment.
[MemProf] Enhance thin link optimization remarks (#184829)
Don't require -memprof-report-hinted-sizes for emitting opt remarks
during the thin link step. Invoke the handling also when opt remarks are
enabled for MemProf per OptimizationRemarkEmitter::allowExtraAnalysis.
Also, add a fallback message if we don't have the context size
information, adding tests for those new messages.
I also realized we don't currently emit these messages for MemProf with
regular LTO, and added a TODO.
