https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114288
--- Comment #6 from John David Anglin <danglin at gcc dot gnu.org> ---
It looks to me like a bug in reload. Reload generates bogus reloads for
insn 14 and deletes insn 10 which sets (reg/f:SI 146).
But the bug was probably exposed by the change I made a few months ago
to pa_legitimate_address_p. insn 14 needs reloading because the offset
doesn't fit in 5 bits.
The code in pa_emit_move_sequence to fix up invalid offsets in floating
point loads and stores is not used.
This backtrace points to the broken area of reload.
(gdb) bt
#0 pa_emit_move_sequence (operands=0xf7b02e08, mode=E_SImode, scratch_reg=0x0)
at ../../gcc/gcc/config/pa/pa.cc:1924
#1 0x011366a8 in gen_movsi (operand0=0xf98f35e8, operand1=0xf98276a0)
at ../../gcc/gcc/config/pa/pa.md:2141
#2 0x004a7070 in insn_gen_fn::operator()<rtx_def*, rtx_def*> (
this=<optimized out>) at ../../gcc/gcc/recog.h:441
#3 emit_move_insn_1 (x=0xf98276a0, y=0xf98276a0) at ../../gcc/gcc/expr.cc:4551
#4 0x004b229c in gen_move_insn (x=0xf98276a0, y=0xf98f35e8)
at ../../gcc/gcc/expr.cc:4741
#5 0x00843fe4 in gen_reload (out=<optimized out>, in=<optimized out>,
opnum=-108890464, type=RELOAD_FOR_OPERAND_ADDRESS)
at ../../gcc/gcc/reload1.cc:8637
#6 0x008442f0 in gen_reload (out=<optimized out>, in=<optimized out>,
opnum=-108890464, type=RELOAD_FOR_OPERAND_ADDRESS)
at ../../gcc/gcc/reload1.cc:8550
#7 0x00848914 in emit_input_reload_insns (chain=<optimized out>,
rl=0x192ddf8 <rld>, old=<optimized out>, j=-108890464)
at ../../gcc/gcc/reload1.cc:7527
#8 do_input_reload (chain=<optimized out>, rl=0xf98f35e8, j=-108890464)
at ../../gcc/gcc/reload1.cc:7814
#9 0x00850698 in emit_reload_insns (chain=<optimized out>)
at ../../gcc/gcc/reload1.cc:8002
#10 reload_as_needed (live_known=1) at ../../gcc/gcc/reload1.cc:4543
--Type <RET> for more, q to quit, c to continue without paging--
#11 reload (first=<optimized out>, global=1) at ../../gcc/gcc/reload1.cc:1047
#12 0x0067c508 in do_reload () at ../../gcc/gcc/ira.cc:5985
#13 (anonymous namespace)::pass_reload::execute (this=<optimized out>)
at ../../gcc/gcc/ira.cc:6161
#14 0x0079ef7c in execute_one_pass (pass=0xf98276a0)
at ../../gcc/gcc/passes.cc:2646
#15 0x0079f894 in execute_pass_list_1 (pass=0xf98276a0)
at ../../gcc/gcc/passes.cc:2755
#16 0x0079f8ac in execute_pass_list_1 (pass=0xf98276a0)
at ../../gcc/gcc/passes.cc:2756
#17 0x0079f90c in execute_pass_list (fn=<optimized out>, pass=<optimized out>)
at ../../gcc/gcc/passes.cc:2766
#18 0x003b9a8c in cgraph_node::expand (this=0xf98276a0)
at ../../gcc/gcc/context.h:48
#19 cgraph_node::expand (this=0xf98276a0) at ../../gcc/gcc/cgraphunit.cc:1798
#20 0x003bbaa8 in expand_all_functions () at ../../gcc/gcc/cgraphunit.cc:2028
#21 symbol_table::compile (this=0xf98276a0) at ../../gcc/gcc/cgraphunit.cc:2402
#22 0x003bdc4c in symbol_table::compile (this=0x7)
at ../../gcc/gcc/cgraphunit.cc:2315
#23 symbol_table::finalize_compilation_unit (this=0x7)
at ../../gcc/gcc/cgraphunit.cc:2587
#24 0x008d137c in compile_file () at ../../gcc/gcc/toplev.cc:476
Will try to work around issue in pa_legitimate_address_p.
