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[Bug tree-optimization/85331] New: during GIMPLE pass, internal compiler error: Segmentation fault (-O1 and above)


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85331

            Bug ID: 85331
           Summary: during GIMPLE pass, internal compiler error:
                    Segmentation fault (-O1 and above)
           Product: gcc
           Version: 8.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: shlei930 at gmail dot com
  Target Milestone: ---

$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/home/suhua/compilers/trunk/root-gcc/libexec/gcc/x86_64-pc-linux-gnu/8.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/home/suhua/compilers/trunk/root-gcc
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 8.0.1 20180410 (experimental) [trunk revision 259265] (GCC)

$ gcc-trunk -O1 abc.c
during GIMPLE pass: ccp
abc.c: In function ‘fn1’:
abc.c:9:1: internal compiler error: Segmentation fault
 }
 ^
0xcbd6af crash_signal
        ../../gcc/gcc/toplev.c:325
0x9f6cae fold_vec_perm
        ../../gcc/gcc/fold-const.c:8951
0x9e4fee fold_ternary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*, tree_node*)
        ../../gcc/gcc/fold-const.c:11747
0x102fac2 gimple_resimplify3(gimple**, code_helper*, tree_node*, tree_node**,
tree_node* (*)(tree_node*))
        ../../gcc/gcc/gimple-match-head.c:194
0x110fc27 gimple_simplify(gimple*, code_helper*, tree_node**, gimple**,
tree_node* (*)(tree_node*), tree_node* (*)(tree_node*))
        ../../gcc/gcc/gimple-match-head.c:693
0xa3847a gimple_fold_stmt_to_constant_1(gimple*, tree_node* (*)(tree_node*),
tree_node* (*)(tree_node*))
        ../../gcc/gcc/gimple-fold.c:6099
0xdc5441 ccp_fold
        ../../gcc/gcc/tree-ssa-ccp.c:1258
0xdc5441 evaluate_stmt
        ../../gcc/gcc/tree-ssa-ccp.c:1786
0xdc7515 visit_assignment
        ../../gcc/gcc/tree-ssa-ccp.c:2355
0xdc75d2 ccp_propagate::visit_stmt(gimple*, edge_def**, tree_node**)
        ../../gcc/gcc/tree-ssa-ccp.c:2433
0xe4a103 ssa_propagation_engine::simulate_stmt(gimple*)
        ../../gcc/gcc/tree-ssa-propagate.c:237
0xe4a48a ssa_propagation_engine::simulate_block(basic_block_def*)
        ../../gcc/gcc/tree-ssa-propagate.c:371
0xe4b696 ssa_propagation_engine::ssa_propagate()
        ../../gcc/gcc/tree-ssa-propagate.c:800
0xdc0373 do_ssa_ccp
        ../../gcc/gcc/tree-ssa-ccp.c:2474
0xdc0373 execute
        ../../gcc/gcc/tree-ssa-ccp.c:2518
Please submit a full bug report,
with preprocessed source if appropriate.

$ cat abc.c
#include <stdint.h>
typedef double vecf __attribute__((vector_size(2 * sizeof(double))));
typedef int64_t veci __attribute__((vector_size(2 * sizeof(int64_t))));
void fn1() {
  vecf *r;
  vecf y = {};
  veci m = {10000000000};
  *r = __builtin_shuffle(y, m);
}

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