https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112913
Bug ID: 112913 Summary: ICE: in curr_insn_transform, at lra-constraints.cc:4308 Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: iamanonymous.cs at gmail dot com Target Milestone: --- ******************************************************************************* OS and Platform: $ uname -a: Linux ubuntu 4.15.0-213-generic #224-Ubuntu SMP Mon Jun 19 13:30:12 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux ******************************************************************************* gcc version: $ gcc -v Using built-in specs. COLLECT_GCC=/root/gcc_set/202311291030/bin/gcc COLLECT_LTO_WRAPPER=/root/gcc_set/202311291030/libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc/configure --prefix=/root/gcc_set/202311291030 --with-gmp=/root/build_essential --with-mpfr=/root/build_essential --with-mpc=/root/build_essential --enable-languages=c,c++ --disable-multilib --with-sanitizer=address,undefined,thread,leak Thread model: posix Supported LTO compression algorithms: zlib gcc version 14.0.0 20231129 (experimental) (GCC) git version: 99fa0bfd63d97825c4221dcd3123940f1d0e6291 ******************************************************************************* Program: $ cat mutant.c typedef unsigned short uint16_t; uint16_t a; void function (uint16_t **p) { a = **p; } ******************************************************************************* Compiler explorer: Command Lines: $ gcc -ffixed-rax -ffixed-rbx -ffixed-rcx -ffixed-rdx -ffixed-rdi -ffixed-rsi -ffixed-r8 -ffixed-r9 -ffixed-r10 -ffixed-r11 -ffixed-r12 -ffixed-r13 -ffixed-r14 -fsanitize=address mutant.c mutant.c: In function ‘function’: mutant.c:8:1: error: unable to generate reloads for: 8 | } | ^ (insn 31 30 32 4 (set (reg:CCGC 17 flags) (compare:CCGC (reg:QI 113 [ _21 ]) (reg:QI 109 [ _17 ]))) "mutant.c":7:7 9 {*cmpqi_1} (expr_list:REG_DEAD (reg:QI 113 [ _21 ]) (expr_list:REG_DEAD (reg:QI 109 [ _17 ]) (nil)))) during RTL pass: reload mutant.c:8:1: internal compiler error: in curr_insn_transform, at lra-constraints.cc:4308 0x7e504e _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) ../../gcc/gcc/rtl-error.cc:108 0x7bb7f8 curr_insn_transform ../../gcc/gcc/lra-constraints.cc:4308 0xe32206 lra_constraints(bool) ../../gcc/gcc/lra-constraints.cc:5511 0xe1d532 lra(_IO_FILE*) ../../gcc/gcc/lra.cc:2419 0xdd3241 do_reload ../../gcc/gcc/ira.cc:5973 0xdd3241 execute ../../gcc/gcc/ira.cc:6161 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. Also ICE on trunk, compiler explorer: https://godbolt.org/z/q1YT7vKzh