[Bug rtl-optimization/64311] New: ICE: Max. number of generated reload insns per insn is achieved (90) with -fpic -march=corei7 for gcc.target/i386/avx512bw-vpbroadcast[bw]-1.c

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64311

            Bug ID: 64311
           Summary: ICE: Max. number of generated reload insns per insn is
                    achieved (90) with -fpic -march=corei7 for
                    gcc.target/i386/avx512bw-vpbroadcast[bw]-1.c
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ubizjak at gmail dot com

As seen in [1], reproducible on x86_64-linux with "-mavx512bw -mavx512vl -O2
-fpic -m32 -march=corei7":

~/gcc-build/gcc/xgcc -B ~/gcc-build/gcc/ -mavx512bw -mavx512vl -O2 -fpic -m32
-march=corei7 -S avx512bw-vpbroadcastw-1.c  
avx512bw-vpbroadcastw-1.c: In function ‘avx512bw_test’:
avx512bw-vpbroadcastw-1.c:39:1: internal compiler error: Max. number of
generated reload insns per insn is achieved (90)

 }
 ^
0x9383d0 lra_constraints(bool)
        ../../gcc-svn/trunk/gcc/lra-constraints.c:4225
0x928301 lra(_IO_FILE*)
        ../../gcc-svn/trunk/gcc/lra.c:2277
0x8e6959 do_reload
        ../../gcc-svn/trunk/gcc/ira.c:5391
0x8e6959 execute
        ../../gcc-svn/trunk/gcc/ira.c:5561
Please submit a full bug report,

[1] https://gcc.gnu.org/ml/gcc-testresults/2014-12/msg01763.html