https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112686
Bug ID: 112686 Summary: [14 Regression] ICE: in gen_reg_rtx, at emit-rtl.cc:1176 with -fsplit-stack -mcmodel=large Product: gcc Version: 14.0 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: x86_64-pc-linux-gnu Created attachment 56677 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56677&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -fsplit-stack -mcmodel=large testcase.c during RTL pass: pro_and_epilogue testcase.c: In function 'foo': testcase.c:1:17: internal compiler error: in gen_reg_rtx, at emit-rtl.cc:1176 1 | void foo(void) {} | ^ 0x74c298 gen_reg_rtx(machine_mode) /repo/gcc-trunk/gcc/emit-rtl.cc:1176 0x107cfae copy_to_mode_reg(machine_mode, rtx_def*) /repo/gcc-trunk/gcc/explow.cc:650 0x19b175d ix86_expand_call(rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, bool) /repo/gcc-trunk/gcc/config/i386/i386-expand.cc:9710 0x18b70da ix86_expand_split_stack_prologue() /repo/gcc-trunk/gcc/config/i386/i386.cc:10565 0x1dec81a gen_split_stack_prologue() /repo/gcc-trunk/gcc/config/i386/i386.md:18458 0x1897c75 target_gen_split_stack_prologue /repo/gcc-trunk/gcc/config/i386/i386.md:18213 0x111a64a make_split_prologue_seq /repo/gcc-trunk/gcc/function.cc:5795 0x111a64a make_split_prologue_seq /repo/gcc-trunk/gcc/function.cc:5788 0x111a83a thread_prologue_and_epilogue_insns() /repo/gcc-trunk/gcc/function.cc:6049 0x111b1b2 rest_of_handle_thread_prologue_and_epilogue /repo/gcc-trunk/gcc/function.cc:6553 0x111b1b2 execute /repo/gcc-trunk/gcc/function.cc:6634 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. $ x86_64-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r14-5791-20231123115417-g24592abd68e-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra --disable-bootstrap --with-cloog --with-ppl --with-isl --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld --with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-r14-5791-20231123115417-g24592abd68e-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.0 20231123 (experimental) (GCC)