https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79498
--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fort...@t-online.de>
---
No ICE seen with gcc version 6.3.1 20170131.
On my environment, gcc-5.4.1 gives :
$ gcc-5-20170110 -mcmodel=large -O2 -c pr78526.c
pr78526.c: In function 'bar':
pr78526.c:11:1: warning: AVX512F vector return without AVX512F enabled changes
the ABI [-Wpsabi]
{
^
pr78526.c: In function 'foo':
pr78526.c:18:1: note: The ABI for passing parameters with 64-byte alignment has
changed in GCC 4.6
foo (U u)
^
pr78526.c: In function 'bar':
pr78526.c:13:16: internal compiler error: in tree_to_shwi, at tree.c:7151
v[x[0]] <<= u[-63];
^
0xd99522 tree_to_shwi(tree_node const*)
../../gcc/tree.c:7151
0x8629c4 fold_indirect_ref_1(unsigned int, tree_node*, tree_node*)
../../gcc/fold-const.c:15945
0x88da53 fold_indirect_ref_loc(unsigned int, tree_node*)
../../gcc/fold-const.c:16024
0x92d4a8 gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
../../gcc/gimplify.c:8241
0x92d1a8 gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
../../gcc/gimplify.c:8833
0x93a4a8 gimplify_modify_expr
../../gcc/gimplify.c:4647
0x92d9a6 gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
../../gcc/gimplify.c:8129
0x931a76 gimplify_stmt(tree_node**, gimple_statement_base**)
../../gcc/gimplify.c:5548
0x92ee8b gimplify_statement_list
../../gcc/gimplify.c:1487
0x92ee8b gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
../../gcc/gimplify.c:8544
0x931a76 gimplify_stmt(tree_node**, gimple_statement_base**)
../../gcc/gimplify.c:5548
0x93297d gimplify_bind_expr
../../gcc/gimplify.c:1136
0x92dd73 gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
../../gcc/gimplify.c:8326
0x931a76 gimplify_stmt(tree_node**, gimple_statement_base**)
../../gcc/gimplify.c:5548
0x9334f0 gimplify_body(tree_node*, bool)
../../gcc/gimplify.c:9263
0x933af6 gimplify_function_tree(tree_node*)
../../gcc/gimplify.c:9417
0x7781b7 cgraph_node::analyze()
../../gcc/cgraphunit.c:634
0x77b3c3 analyze_functions
../../gcc/cgraphunit.c:1024
0x77bba5 symbol_table::finalize_compilation_unit()
../../gcc/cgraphunit.c:2453
0x62257a c_write_global_declarations()
../../gcc/c/c-decl.c:10857
