[Bug tree-optimization/111622] New: [13 Regression] EVRP compile-time hog compiling risc-v insn-opinit.cc

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111622

            Bug ID: 111622
           Summary: [13 Regression] EVRP compile-time hog compiling risc-v
                    insn-opinit.cc
           Product: gcc
           Version: 13.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org
  Target Milestone: ---

Compiling insn-opinit.cc with a x86_64 GCC 13.2 host compiler targeting
riscv64-linux with -O2 shows

 tree Early VRP                     :  97.26 ( 77%)   0.01 (  1%)  97.28 ( 76%)
 2908k (  0%)
 TOTAL                              : 127.13          1.06        128.21       
  931M

and sofar unchanged on the branch head.

It's improved with GCC 14 where we instead have the worst passes being

 alias stmt walking                 :   5.89 ( 19%)   0.10 ( 10%)   6.01 ( 19%)
 8531k (  1%)
 tree FRE                           :   4.73 ( 16%)   0.04 (  4%)   4.76 ( 15%)
 4325k (  0%)

GCC 12 is fine as well.