[Bug rtl-optimization/101523] Huge number of combine attempts

[krebbel at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101523

--- Comment #10 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Created attachment 57599
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57599&action=edit
Testcase - somewhat reduced from libecpint

Verified with rev 146f16c97f6

cc1plus -O2 t.cc

try_combine invocations:
x86:
3
27262
27603

s390x:
8
40439657
40440339