[Bug rtl-optimization/77377] New: [7 Regression] c-c++-common/pr59037.c ICEs with -fpic -msse on i686

["ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77377

            Bug ID: 77377
           Summary: [7 Regression] c-c++-common/pr59037.c ICEs with -fpic
                    -msse on i686
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ubizjak at gmail dot com
  Target Milestone: ---

Recent 7.0 regression:

~/gcc-build/gcc/cc1 -O3 -fpic -m32 -msse -quiet pr59037.c 

pr59037.c: In function ‘main’:
pr59037.c:12:1: internal compiler error: Segmentation fault
 }
 ^
0xb1f25f crash_signal
        ../../git/gcc/gcc/toplev.c:335
0x7f2c38 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
        ../../git/gcc/gcc/tree.h:3148
0x7f2c38 make_tree(tree_node*, rtx_def*)
        ../../git/gcc/gcc/expmed.c:5085
0x7f2d26 make_tree(tree_node*, rtx_def*)
        ../../git/gcc/gcc/expmed.c:5111
0xe1ef70 force_const_mem(machine_mode, rtx_def*)
        ../../git/gcc/gcc/varasm.c:3722
0x96cb86 setup_reg_equiv
        ../../git/gcc/gcc/ira.c:3933
0x96cb86 ira
        ../../git/gcc/gcc/ira.c:5196
0x96cb86 execute
        ../../git/gcc/gcc/ira.c:5526
Please submit a full bug report,


gdb session:

Program received signal SIGSEGV, Segmentation fault.
make_tree (type=type@entry=0x0, x=0x2aaaae7b0480) at
../../git/gcc/gcc/expmed.c:5085
5085          t = wide_int_to_tree (type, std::make_pair (x, TYPE_MODE
(type)));
(gdb) bt
#0  make_tree (type=type@entry=0x0, x=0x2aaaae7b0480) at
../../git/gcc/gcc/expmed.c:5085
#1  0x00000000007f2d27 in make_tree (type=0x2aaaae7ac7e0, x=0x2aaaae8b0890) at
../../git/gcc/gcc/expmed.c:5111
#2  0x0000000000e1ef71 in force_const_mem (mode=SImode, x=0x2aaaae8b0890) at
../../git/gcc/gcc/varasm.c:3722
#3  0x000000000096cb87 in setup_reg_equiv () at ../../git/gcc/gcc/ira.c:3933
#4  ira (f=<optimized out>) at ../../git/gcc/gcc/ira.c:5196
#5  (anonymous namespace)::pass_ira::execute (this=<optimized out>) at
../../git/gcc/gcc/ira.c:5526
#6  0x0000000000a509fe in execute_one_pass (pass=pass@entry=0x20d9db0) at
../../git/gcc/gcc/passes.c:2340
#7  0x0000000000a50ff8 in execute_pass_list_1 (pass=0x20d9db0) at
../../git/gcc/gcc/passes.c:2429
#8  0x0000000000a5100a in execute_pass_list_1 (pass=0x20d8d90) at
../../git/gcc/gcc/passes.c:2430
#9  0x0000000000a51055 in execute_pass_list (fn=<optimized out>,
pass=<optimized out>) at ../../git/gcc/gcc/passes.c:2440
#10 0x0000000000736e54 in cgraph_node::expand (this=0x2aaaae8c9000) at
../../git/gcc/gcc/cgraphunit.c:1985
#11 0x00000000007387f7 in expand_all_functions () at
../../git/gcc/gcc/cgraphunit.c:2121
#12 symbol_table::compile (this=0x2aaaae7ac0a8) at
../../git/gcc/gcc/cgraphunit.c:2478
#13 0x000000000073aaa8 in compile (this=0x2aaaae7ac0a8) at
../../git/gcc/gcc/cgraphunit.c:2571
#14 symbol_table::finalize_compilation_unit (this=0x2aaaae7ac0a8) at
../../git/gcc/gcc/cgraphunit.c:2568
#15 0x0000000000b1f4eb in compile_file () at ../../git/gcc/gcc/toplev.c:490
#16 0x0000000000b21155 in do_compile () at ../../git/gcc/gcc/toplev.c:2003
#17 toplev::main (this=0x7fffffffc1a0, argc=<optimized out>, argv=<optimized
out>) at ../../git/gcc/gcc/toplev.c:2137
#18 0x00000000012eae67 in main (argc=6, argv=0x7fffffffc2a8) at
../../git/gcc/gcc/main.c:39

(gdb) list
5080
5081      switch (GET_CODE (x))
5082        {
5083        case CONST_INT:
5084        case CONST_WIDE_INT:
5085          t = wide_int_to_tree (type, std::make_pair (x, TYPE_MODE
(type)));
5086          return t;
5087
5088        case CONST_DOUBLE:
5089          STATIC_ASSERT (HOST_BITS_PER_WIDE_INT * 2 <=
MAX_BITSIZE_MODE_ANY_INT);

(gdb) p type
$1 = (tree) 0x0

(gdb) p debug_rtx (x)
(const_int 0 [0])