https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106933
Bug ID: 106933 Summary: [13 Regression] ICE in extract_insn, at recog.cc:2791 (error: unrecognizable insn) Product: gcc Version: 13.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: asolokha at gmx dot com Target Milestone: --- Target: x86_64-unknown-linux-gnu gcc 13.0.0 20220911 snapshot (g:0ea5e3f4542832b8da016b152695e64a2a386309) ICEs when compiling the following testcase w/ -O2: short int bar (void); __int128 empty (void) { } __attribute__ ((simd)) int foo (__int128 *p) { int a = 0x80000000; *p = empty (); return *p == (a < bar ()); } % x86_64-unknown-linux-gnu-gcc-13.0.0 -O2 -c ylbcgrld.c ylbcgrld.c: In function 'foo.simdclone.2': ylbcgrld.c:17:1: error: unrecognizable insn: 17 | } | ^ (insn 73 72 74 3 (set (reg:CCZ 17 flags) (compare:CCZ (reg:V1TI 20 xmm0 [orig:82 D.2028 ] [82]) (const_int 1 [0x1]))) "ylbcgrld.c":16:13 -1 (expr_list:REG_DEAD (reg:V1TI 20 xmm0 [orig:82 D.2028 ] [82]) (nil))) during RTL pass: cprop_hardreg ylbcgrld.c:17:1: internal compiler error: in extract_insn, at recog.cc:2791 0x730822 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/rtl-error.cc:108 0x73083e _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) /var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/rtl-error.cc:116 0x72edc3 extract_insn(rtx_insn*) /var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/recog.cc:2791 0xe4dc0b extract_constrain_insn(rtx_insn*) /var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/recog.cc:2690 0xe58de6 copyprop_hardreg_forward_1 /var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/regcprop.cc:826 0xe59fbf execute /var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/regcprop.cc:1408