https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64263
Bug ID: 64263 Summary: ICE where adddi3_aarch64 does not satisfy its constraints after r217546 Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: jgreenhalgh at gcc dot gnu.org CC: ramana at gcc dot gnu.org Host: x86_64-unknown-linux-gnu Target: aarch64-none-elf Created attachment 34248 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34248&action=edit Failing testcase As of r217546, for the attached testcase (compile with -O1), I see the following ICE on aarch64-none-elf: --- $ gcc-r217546 bug.c -O1 ./bug.c: In function 'foo': ./bug.c:35:10: warning: implicit declaration of function 'vget_lane_s64' [-Wimplicit-function-declaration] val14 = vcreate_s8(0xff0080f6807f807fUL); ^ ./bug.c:38:1: error: insn does not satisfy its constraints: val40 = vreinterpretq_u32_u64( ^ (insn 14 13 7 2 (set (reg:DI 32 v0) (plus:DI (reg:DI 32 v0) (const_int 255 [0xff]))) ./bug.c:35 80 {*adddi3_aarch64} (expr_list:REG_EQUAL (const_int 71776119077929215 [0xff000000ff00ff]) (nil))) ./bug.c:38:1: internal compiler error: in extract_constrain_insn, at recog.c:2230 0xa19646 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /work/gcc-clean/src/gcc/gcc/rtl-error.c:110 0xa19677 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) /work/gcc-clean/src/gcc/gcc/rtl-error.c:121 0x9f0a40 extract_constrain_insn(rtx_insn*) /work/gcc-clean/src/gcc/gcc/recog.c:2230 0x9f32bc copyprop_hardreg_forward_1 /work/gcc-clean/src/gcc/gcc/regcprop.c:773 0x9f3fbd execute /work/gcc-clean/src/gcc/gcc/regcprop.c:1279 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.