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)
