[Bug target/88457] New: ICE: Max. number of generated reload insns per insn is achieved (90)

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88457

            Bug ID: 88457
           Summary: ICE: Max. number of generated reload insns per insn is
                    achieved (90)
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: powerpc-*-linux-gnu

gcc-9.0.0-alpha20181209 snapshot (r266934) ICEs when compiling
gcc/testsuite/gcc.target/powerpc/clone1.c w/ -mcpu=power7 -O1
-fexpensive-optimizations --param ira-max-conflict-table-size=0 --param
max-cse-insns=3:

% powerpc-e300c3-linux-gnu-gcc-9.0.0-alpha20181209 -mcpu=power7 -O1
-fexpensive-optimizations --param ira-max-conflict-table-size=0 --param
max-cse-insns=3 -c gcc/testsuite/gcc.target/powerpc/clone1.c
during RTL pass: reload
gcc/testsuite/gcc.target/powerpc/clone1.c: In function 'mod_func_or':
gcc/testsuite/gcc.target/powerpc/clone1.c:23:1: internal compiler error: Max.
number of generated reload insns per insn is achieved (90)

   23 | }
      | ^
0xba14ee lra_constraints(bool)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20181209/work/gcc-9-20181209/gcc/lra-constraints.c:4850
0xb882f8 lra(_IO_FILE*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20181209/work/gcc-9-20181209/gcc/lra.c:2446
0xb3e2f4 do_reload
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20181209/work/gcc-9-20181209/gcc/ira.c:5475
0xb3e2f4 execute
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20181209/work/gcc-9-20181209/gcc/ira.c:5659