[Bug target/78056] New: [7 Regression] build failure on Power7

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78056

            Bug ID: 78056
           Summary: [7 Regression] build failure on Power7
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: kelvin at gcc dot gnu.org
  Target Milestone: ---
              Host: powerpc64-unknown-linux-gnu
            Target: powerpc64-unknown-linux-gnu
             Build: powerpc64-unknown-linux-gnu

gcc trunk fails to build on Power7 machines (e.g. gcc110):

/home/trippels/gcc_build_dir/./gcc/xgcc -B/home/trippels/gcc_build_dir/./gcc/
-nostdinc -x c /dev/null -S -fself-test
<built-in>: internal compiler error: in altivec_init_builtins, at
config/rs6000/rs6000.c:17547
0x10cc23f3 altivec_init_builtins
        ../../gcc/gcc/config/rs6000/rs6000.c:17547
0x10cc23f3 rs6000_init_builtins
        ../../gcc/gcc/config/rs6000/rs6000.c:16823
0x1025ad63 c_define_builtins
        ../../gcc/gcc/c-family/c-common.c:4034
0x1025ad63 c_common_nodes_and_builtins()
        ../../gcc/gcc/c-family/c-common.c:4502
0x101878b3 c_init_decl_processing()
        ../../gcc/gcc/c/c-decl.c:4097
0x101e702f c_objc_common_init()
        ../../gcc/gcc/c/c-objc-common.c:58
0x10171acf lang_dependent_init
        ../../gcc/gcc/toplev.c:1775
0x10171acf do_compile
        ../../gcc/gcc/toplev.c:1998