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.