https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107088
Bug ID: 107088 Summary: [13 Regression] cselib ICE building __trunctfxf2 on ia64 Product: gcc Version: 13.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: jsm28 at gcc dot gnu.org CC: stefansf at linux dot ibm.com Target Milestone: --- Target: ia64-*-* Created attachment 53641 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53641&action=edit preprocessed source commit d0b00b63a39108311f2e6f9cbe9072579f57df7c, "cselib: Keep track of further subvalue relations", introduced an ICE building libgcc for ia64-linux-gnu. Compile with attached testcase with -O2. /scratch/jmyers/glibc/many13/src/gcc/libgcc/soft-fp/trunctfxf2.c: In function '__trunctfxf2': /scratch/jmyers/glibc/many13/src/gcc/libgcc/soft-fp/trunctfxf2.c:52:1: internal compiler error: in require, at machmode.h:297 52 | } | ^ 0x876576 opt_mode<scalar_int_mode>::require() const /scratch/jmyers/glibc/many13/src/gcc/gcc/machmode.h:297 0x876576 void mode_iterator::get_known_wider<scalar_int_mode>(scalar_int_mode*) /scratch/jmyers/glibc/many13/src/gcc/gcc/machmode.h:1124 0x876576 new_cselib_val /scratch/jmyers/glibc/many13/src/gcc/gcc/cselib.cc:1579 0x873e4e cselib_lookup_1 /scratch/jmyers/glibc/many13/src/gcc/gcc/cselib.cc:2315 0x873e4e cselib_lookup(rtx_def*, machine_mode, int, machine_mode) /scratch/jmyers/glibc/many13/src/gcc/gcc/cselib.cc:2431 0x876aff cselib_hash_rtx /scratch/jmyers/glibc/many13/src/gcc/gcc/cselib.cc:1308 0x876e69 cselib_hash_rtx /scratch/jmyers/glibc/many13/src/gcc/gcc/cselib.cc:1505 0x873c5f cselib_lookup_1 /scratch/jmyers/glibc/many13/src/gcc/gcc/cselib.cc:2375 0x873c5f cselib_lookup(rtx_def*, machine_mode, int, machine_mode) /scratch/jmyers/glibc/many13/src/gcc/gcc/cselib.cc:2431 0x877a6a cselib_record_sets /scratch/jmyers/glibc/many13/src/gcc/gcc/cselib.cc:2932 0x87867d cselib_process_insn(rtx_insn*) /scratch/jmyers/glibc/many13/src/gcc/gcc/cselib.cc:3159 0x1661d1c dse_step1 /scratch/jmyers/glibc/many13/src/gcc/gcc/dse.cc:2771 0x1661d1c rest_of_handle_dse /scratch/jmyers/glibc/many13/src/gcc/gcc/dse.cc:3687 0x1661d1c execute /scratch/jmyers/glibc/many13/src/gcc/gcc/dse.cc:3803 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions.