[Bug tree-optimization/98866] New: [11 Regresion] Compile time hog in VRP since r11-3685-gfcae5121154d1c33

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98866

            Bug ID: 98866
           Summary: [11 Regresion] Compile time hog in VRP since
                    r11-3685-gfcae5121154d1c33
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: compile-time-hog
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: aldyh at gcc dot gnu.org, amacleod at redhat dot com
  Target Milestone: ---

Created attachment 50074
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50074&action=edit
test-case

Since the revision, 

g++ -Ofast -fno-checking pr12392.cpp -c

is slower by about 50%. Note that the source file comes from a different
compile time hog PR.