https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65990
Bug ID: 65990
Summary: ICE: in extract_insn, at recog.c:2341 (unrecognizable
insn) with -mmemcpy-strategy=rep_8byte:-1:noalign -m32
-mtune=btver2
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 35447
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35447&action=edit
reduced testcase
Compiler output:
$ gcc -mmemcpy-strategy=rep_8byte:-1:noalign -m32 -mtune=btver2 testcase.c
testcase.c: In function 'foo':
testcase.c:24:1: error: unrecognizable insn:
}
^
(insn 8 7 9 2 (parallel [
(set (reg:SI 89)
(const_int 0 [0]))
(set (reg/f:SI 87)
(plus:SI (ashift:SI (reg:SI 89)
(const_int 3 [0x3]))
(reg/f:SI 87)))
(set (reg/f:SI 88)
(plus:SI (ashift:SI (reg:SI 89)
(const_int 3 [0x3]))
(reg/f:SI 88)))
(set (mem/c:BLK (reg/f:SI 87) [0 u9+0 S32 A32])
(mem/u/c:BLK (reg/f:SI 88) [0 S32 A32]))
(use (reg:SI 89))
]) testcase.c:11 -1
(nil))
testcase.c:24:1: internal compiler error: in extract_insn, at recog.c:2341
0xae3e58 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/mnt/svn/gcc-trunk/gcc/rtl-error.c:110
0xae3ee8 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/mnt/svn/gcc-trunk/gcc/rtl-error.c:118
0xa99fe8 extract_insn(rtx_insn*)
/mnt/svn/gcc-trunk/gcc/recog.c:2341
0x866dde instantiate_virtual_regs_in_insn
/mnt/svn/gcc-trunk/gcc/function.c:1646
0x866dde instantiate_virtual_regs
/mnt/svn/gcc-trunk/gcc/function.c:1966
0x866dde execute
/mnt/svn/gcc-trunk/gcc/function.c:2015
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Tested revisions:
r222716 - ICE
5 r222437 - ICE
4_9 r222436 - ICE
