[Bug tree-optimization/125177] New: BB SLP graph partitioning is not correct

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125177

            Bug ID: 125177
           Summary: BB SLP graph partitioning is not correct
           Product: gcc
           Version: 17.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org
            Blocks: 53947
  Target Milestone: ---

PR125124 shows we do not appropriately look at the scalar stmt coverage when
partitioning the SLP graph, leading to over-costing of scalar stmts (or ICEs).


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations