https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78748
Bug ID: 78748
Summary: [7 Regression] ICE in extract_insn, at recog.c:2311
(s390x-linux-gnu)
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
seen with r243430 on s390x-linux-gnu
configured with --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++
--prefix=/usr --program-suffix=-7 --program-prefix=s390x-linux-gnu-
--enable-shared --enable-linker-build-id --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --libdir=/usr/lib
--enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new
--enable-gnu-unique-object --disable-libsanitizer --disable-libquadmath
--enable-plugin --enable-default-pie --with-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch=zEC12 --with-long-double-128
--enable-multilib --enable-checking=release --build=s390x-linux-gnu
--host=s390x-linux-gnu --target=s390x-linux-gnu
$ cat 32bpp.i
int a, b;
void c() { b = a & ~b; }
$ gcc -c -O2 32bpp.i
32bpp.i: In function 'c':
32bpp.i:2:1: error: unrecognizable insn:
void c() { b = a & ~b; }
^~~~
(insn 17 16 0 2 (parallel [
(set (mem/c:SI (reg/f:DI 64) [1 b+0 S4 A32])
(xor:SI (reg:SI 71)
(mem/c:SI (reg/f:DI 68) [1 a+0 S4 A32])))
(clobber (reg:CC 33 %cc))
]) "32bpp.i":2 -1
(expr_list:REG_DEAD (reg:SI 71)
(expr_list:REG_DEAD (reg/f:DI 68)
(expr_list:REG_DEAD (reg/f:DI 64)
(expr_list:REG_UNUSED (reg:CC 33 %cc)
(nil))))))
32bpp.i:2:1: internal compiler error: in extract_insn, at recog.c:2311
0x15ce0dd _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../src/gcc/rtl-error.c:108
0x15ce11d _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../src/gcc/rtl-error.c:116
0x159d26f extract_insn(rtx_insn*)
../../src/gcc/recog.c:2311
0x14a3725 scan_one_insn
../../src/gcc/ira-costs.c:1432
0x14a3725 process_bb_for_costs
../../src/gcc/ira-costs.c:1593
0x14a5dcd find_costs_and_classes
../../src/gcc/ira-costs.c:1700
0x14a66eb ira_set_pseudo_classes(bool, _IO_FILE*)
../../src/gcc/ira-costs.c:2240
0x1b04a7f alloc_global_sched_pressure_data
../../src/gcc/haifa-sched.c:7230
0x1b04a7f sched_init()
../../src/gcc/haifa-sched.c:7383
0x1b05fd7 haifa_sched_init()
../../src/gcc/haifa-sched.c:7395
0x15e2375 schedule_insns()
../../src/gcc/sched-rgn.c:3490
0x15e2b29 schedule_insns()
../../src/gcc/sched-rgn.c:3484
0x15e2b29 rest_of_handle_sched
../../src/gcc/sched-rgn.c:3703
0x15e2b29 execute
../../src/gcc/sched-rgn.c:3811
Please submit a full bug report,
with preprocessed source if appropriate.
