https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111010
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2023-08-14
Priority|P3 |P2
Ever confirmed|0 |1
Target|i386-pc-solaris2.11 |i386-pc-solaris2.11
| |i?86-linux-gnu
Keywords| |needs-bisection
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I can confirm on x86_64-unknown-linux-gnu if you add -fno-omit-frame-pointer:
> ../../gcc13-g/gcc/cc1 -quiet t.c -m32 -O3 -fPIC -march=pentium4
> -mtune=generic -fpreprocessed -w -fno-omit-frame-pointer
t.c: In function 'c':
t.c:21:1: error: unable to find a register to spill
21 | }
| ^
t.c:21:1: error: this is the insn:
(insn 109 283 243 9 (set (reg:DI 295)
(ior:DI (ashift:DI (zero_extend:DI (mem:SI (plus:SI (mult:SI (reg:SI
329 [orig:229 _118 ] [229])
(const_int 4 [0x4]))
(reg/f:SI 328 [orig:83 a.0_1 ] [83])) [3
MEM[(unsigned int *)_11]+0 S4 A32]))
(const_int 32 [0x20]))
(zero_extend:DI (mem:SI (plus:SI (mult:SI (reg:SI 294 [233])
(const_int 4 [0x4]))
(reg/f:SI 328 [orig:83 a.0_1 ] [83])) [3 MEM[(unsigned
int *)_15]+0 S4 A32])))) "t.c":15:7 681 {*concatsidi3_3}
(expr_list:REG_DEAD (reg/f:SI 328 [orig:83 a.0_1 ] [83])
(expr_list:REG_DEAD (reg:SI 329 [orig:229 _118 ] [229])
(expr_list:REG_DEAD (reg:SI 294 [233])
(nil)))))
during RTL pass: reload
t.c:21:1: internal compiler error: in lra_split_hard_reg_for, at
lra-assigns.cc:1871
0x15066db _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/space/rguenther/src/gcc-13-branch/gcc/rtl-error.cc:108
0x131bb9a lra_split_hard_reg_for()
/space/rguenther/src/gcc-13-branch/gcc/lra-assigns.cc:1871
0x1314d74 lra(_IO_FILE*)
/space/rguenther/src/gcc-13-branch/gcc/lra.cc:2451
0x12bdb69 do_reload
/space/rguenther/src/gcc-13-branch/gcc/ira.cc:5963
0x12be060 execute
/space/rguenther/src/gcc-13-branch/gcc/ira.cc:6149
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
