https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97140
Bug ID: 97140
Summary: [10/11 Regression] ICE in error: unable to generate
reloads for since r10-400-gecfdb16c54ad06ac
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: hjl.tools at gmail dot com
Target Milestone: ---
The following is causing ICE:
$ gcc /home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/pr48084-2.c
-mno-mmx -c
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/pr48084-2.c: In
function '_mm_maskmove_si64':
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/pr48084-2.c:10:1:
error: unable to generate reloads for:
10 | }
| ^
(insn 11 10 14 2 (set (mem:V8QI (reg/f:DI 84) [0 S8 A8])
(unspec:V8QI [
(reg:V8QI 83 [ _2 ])
(reg:V8QI 82 [ _1 ])
(mem:V8QI (reg/f:DI 84) [0 S8 A8])
] UNSPEC_MASKMOV))
"/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/pr48084-2.c":9:5
1391 {*mmx_maskmovq}
(expr_list:REG_DEAD (reg/f:DI 84)
(expr_list:REG_DEAD (reg:V8QI 83 [ _2 ])
(expr_list:REG_DEAD (reg:V8QI 82 [ _1 ])
(nil)))))
during RTL pass: reload
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/pr48084-2.c:10:1:
internal compiler error: in curr_insn_transform, at lra-constraints.c:4074
0x6baeff _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/marxin/Programming/gcc/gcc/rtl-error.c:108
0x699f26 curr_insn_transform
/home/marxin/Programming/gcc/gcc/lra-constraints.c:4074
0xc1e676 lra_constraints(bool)
/home/marxin/Programming/gcc/gcc/lra-constraints.c:5100
0xc0b7bc lra(_IO_FILE*)
/home/marxin/Programming/gcc/gcc/lra.c:2415
0xbc6c81 do_reload
/home/marxin/Programming/gcc/gcc/ira.c:5529
0xbc6c81 execute
/home/marxin/Programming/gcc/gcc/ira.c:5715
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
