https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79242
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-04-18
CC| |marxin at gcc dot gnu.org
Component|middle-end |target
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, there's reduced test-case for C:
typedef __int20 unsigned a;
int b, c (c > a (-1) / b);
./xgcc -B. tc.ii
tc.ii: In function ‘void __static_initialization_and_destruction_0(int, int)’:
tc.ii:2:13: internal compiler error: in simplify_subreg, at simplify-rtx.c:6034
int b, c (c > a (-1) / b);
~~^~~~~~~~~~~~
0x105d288 simplify_subreg(machine_mode, rtx_def*, machine_mode, unsigned int)
../../gcc/simplify-rtx.c:6034
0x105dfd7 simplify_gen_subreg(machine_mode, rtx_def*, machine_mode, unsigned
int)
../../gcc/simplify-rtx.c:6265
0x105e07e lowpart_subreg(machine_mode, rtx_def*, machine_mode)
../../gcc/simplify-rtx.c:6288
0xc40370 gen_lowpart_common(machine_mode, rtx_def*)
../../gcc/emit-rtl.c:1456
0x103c314 gen_lowpart_general(machine_mode, rtx_def*)
../../gcc/rtlhooks.c:47
0xc7816d convert_move(rtx_def*, rtx_def*, int)
../../gcc/expr.c:530
0xc77f96 convert_move(rtx_def*, rtx_def*, int)
../../gcc/expr.c:508
0xc78ad5 convert_modes(machine_mode, machine_mode, rtx_def*, int)
../../gcc/expr.c:685
0xdf2639 expand_arith_overflow_result_store
../../gcc/internal-fn.c:568
0xdf68da expand_mul_overflow
../../gcc/internal-fn.c:1849
0xdf7f41 expand_arith_overflow
../../gcc/internal-fn.c:2149
0xdf8317 expand_MUL_OVERFLOW
../../gcc/internal-fn.c:2242
0xdfab1a expand_internal_call(internal_fn, gcall*)
../../gcc/internal-fn.c:2778
0xdfab45 expand_internal_call(gcall*)
../../gcc/internal-fn.c:2786
0xb42e0f expand_call_stmt
../../gcc/cfgexpand.c:2569
0xb42e0f expand_gimple_stmt_1
../../gcc/cfgexpand.c:3571
0xb42e0f expand_gimple_stmt
../../gcc/cfgexpand.c:3737
0xb4486e expand_gimple_basic_block
../../gcc/cfgexpand.c:5744
0xb4a4d6 execute
../../gcc/cfgexpand.c:6357
