https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93335
Bug ID: 93335 Summary: [9/10 Regression] ICE: in extract_insn, at recog.c:2310 with __builtin_sub_overflow_p() on aarch64 Product: gcc Version: 10.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Host: x86_64-pc-linux-gnu Target: aarch64-unknown-linux-gnu Created attachment 47685 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47685&action=edit reduced testcase Compiler output: $ aarch64-unknown-linux-gnu-gcc testcase.c testcase.c: In function 'foo': testcase.c:7:1: error: unrecognizable insn: 7 | } | ^ (insn 13 12 14 2 (parallel [ (set (reg:CC 66 cc) (compare:CC (subreg:DI (reg:TI 101) 0) (const_int 13299 [0x33f3]))) (set (reg:DI 104) (plus:DI (subreg:DI (reg:TI 101) 0) (const_int -13299 [0xffffffffffffcc0d]))) ]) "testcase.c":6:10 -1 (nil)) during RTL pass: vregs testcase.c:7:1: internal compiler error: in extract_insn, at recog.c:2294 0x754329 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /repo/gcc-trunk/gcc/rtl-error.c:108 0x7543ac _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) /repo/gcc-trunk/gcc/rtl-error.c:116 0x744e3b extract_insn(rtx_insn*) /repo/gcc-trunk/gcc/recog.c:2294 0xd5d9d7 instantiate_virtual_regs_in_insn /repo/gcc-trunk/gcc/function.c:1656 0xd5d9d7 instantiate_virtual_regs /repo/gcc-trunk/gcc/function.c:1977 0xd5d9d7 execute /repo/gcc-trunk/gcc/function.c:2026 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. $ aarch64-unknown-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-aarch64/bin/aarch64-unknown-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-20200120111030-92ce93c743b-checking-yes-rtl-df-extra-aarch64/bin/../libexec/gcc/aarch64-unknown-linux-gnu/10.0.1/lto-wrapper Target: aarch64-unknown-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra --with-cloog --with-ppl --with-isl --with-sysroot=/usr/aarch64-unknown-linux-gnu --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=aarch64-unknown-linux-gnu --with-ld=/usr/bin/aarch64-unknown-linux-gnu-ld --with-as=/usr/bin/aarch64-unknown-linux-gnu-as --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-20200120111030-92ce93c743b-checking-yes-rtl-df-extra-aarch64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 10.0.1 20200120 (experimental) (GCC)