https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103353
Bug ID: 103353
Summary: Indefinite recursion when compiling -mmma requiring
testcase w/ -maltivec
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: powerpc-*-linux-gnu
g++-12.0.0-alpha20211114 snapshot (g:3057f1ab737582a9fb37a3fb967ed8bf3659f2f4)
ICEs because of stack exhaustion when compiling
gcc/testsuite/gcc.target/powerpc/pr101849.c w/ -maltivec:
% powerpc-e300c3-linux-gnu-gcc-12.0.0 -maltivec -c
gcc/testsuite/gcc.target/powerpc/pr101849.c
gcc/testsuite/gcc.target/powerpc/pr101849.c: In function 'foo':
gcc/testsuite/gcc.target/powerpc/pr101849.c:11:12: error: '__builtin_vsx_lxvp'
requires the '-mmma' option
11 | dst[0] = __builtin_vsx_lxvp (0, (__vector_pair *)(void *)x);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
powerpc-e300c3-linux-gnu-gcc-12.0.0: internal compiler error: Segmentation
fault signal terminated program cc1
(gdb) where 10
#0 0x000000000093fc34 in ggc_internal_alloc (size=size@entry=24,
f=f@entry=0x0, s=s@entry=0, n=n@entry=1)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/ggc-page.c:1278
#1 0x0000000000a8b94b in ggc_alloc<sequence_stack> ()
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/ggc.h:178
#2 start_sequence ()
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/emit-rtl.c:5476
#3 0x0000000000ac850b in emit_move_multi_word (mode=E_OOmode, x=<optimized
out>, y=0x7ffff75fe978)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/expr.c:3889
#4 0x0000000000ac3d3f in emit_move_insn (x=x@entry=0x7ffff6511060,
y=y@entry=0x7ffff75fe978)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/expr.c:4128
#5 0x0000000000a9ce04 in copy_to_reg (x=x@entry=0x7ffff75fe978)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/explow.c:625
#6 0x0000000000a88908 in operand_subword_force (op=op@entry=0x7ffff75fe978,
offset=offset@entry=..., mode=mode@entry=E_OOmode)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/emit-rtl.c:1802
#7 0x0000000000ac861e in emit_move_multi_word (mode=E_OOmode, x=<optimized
out>, y=0x7ffff75fe978)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/expr.c:3918
#8 0x0000000000ac3d3f in emit_move_insn (x=x@entry=0x7ffff6511018,
y=y@entry=0x7ffff75fe978)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/expr.c:4128
#9 0x0000000000a9ce04 in copy_to_reg (x=x@entry=0x7ffff75fe978)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/explow.c:625
(More stack frames follow...)
(gdb) where -10
#882893 0x00000000009d29e5 in cgraph_node::expand (this=0x7ffff77c8440)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/context.h:48
#882894 cgraph_node::expand (this=0x7ffff77c8440)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/cgraphunit.c:1781
#882895 0x00000000009d3df6 in output_in_order ()
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/cgraphunit.c:2135
#882896 symbol_table::compile (this=0x7ffff77c0000)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/cgraphunit.c:2353
#882897 symbol_table::compile (this=0x7ffff77c0000)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/cgraphunit.c:2267
#882898 0x00000000009d6d07 in symbol_table::finalize_compilation_unit
(this=0x7ffff77c0000)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/cgraphunit.c:2537
#882899 0x0000000000e8b4f7 in compile_file ()
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/toplev.c:479
#882900 0x000000000080d376 in do_compile (no_backend=false)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/toplev.c:2156
#882901 toplev::main (this=this@entry=0x7fffffffd9f6, argc=<optimized out>,
argc@entry=12, argv=<optimized out>,
argv@entry=0x7fffffffdb48)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/toplev.c:2308
#882902 0x000000000080f261 in main (argc=12, argv=0x7fffffffdb48)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/main.c:39
