[Bug rtl-optimization/98863] New: WRF with LTO consumes a lot of memory in split2 pass

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98863

            Bug ID: 98863
           Summary: WRF with LTO consumes a lot of memory in split2 pass
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
            Blocks: 26163
  Target Milestone: ---

Created attachment 50072
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50072&action=edit
CPU and memory usage

Using -flto and -Ofast -march=znver needs >20GB for a single huge ltrans.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163
[Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)