https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117458
Bug ID: 117458
Summary: ICE: in gen_lowpart_general, at rtlhooks.cc:63 when
reinterpreting _Complex float as _BitInt(33)
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
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 59543
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59543&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O1 testcase.c
during RTL pass: expand
testcase.c: In function 'foo':
testcase.c:4:10: internal compiler error: in gen_lowpart_general, at
rtlhooks.cc:63
4 | return *(_BitInt(33) *)&cf32_0;
| ^~~~~~~~~~~~~~~~~~~~~~~
0x2c9f89e internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:518
0xe85439 fancy_abort(char const*, int, char const*)
/repo/gcc-trunk/gcc/diagnostic.cc:1696
0x842d94 gen_lowpart_general(machine_mode, rtx_def*)
/repo/gcc-trunk/gcc/rtlhooks.cc:63
0x1158a62 extract_bit_field_1
/repo/gcc-trunk/gcc/expmed.cc:1832
0x1159a3b extract_bit_field(rtx_def*, poly_int<1u, unsigned long>, poly_int<1u,
unsigned long>, int, rtx_def*, machine_mode, machine_mode, bool, rtx_def**)
/repo/gcc-trunk/gcc/expmed.cc:2170
0x11779c6 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/repo/gcc-trunk/gcc/expr.cc:12509
0x117a045 expand_expr_real_gassign(gassign*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/repo/gcc-trunk/gcc/expr.cc:11150
0x117795a expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/repo/gcc-trunk/gcc/expr.cc:11327
0x11712a3 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
/repo/gcc-trunk/gcc/expr.cc:9481
0x11712a3 expand_expr(tree_node*, rtx_def*, machine_mode, expand_modifier)
/repo/gcc-trunk/gcc/expr.h:323
0x11712a3 expand_expr_real_2(separate_ops const*, rtx_def*, machine_mode,
expand_modifier)
/repo/gcc-trunk/gcc/expr.cc:9818
0x1179ff3 expand_expr_real_gassign(gassign*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/repo/gcc-trunk/gcc/expr.cc:11146
0x117795a expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/repo/gcc-trunk/gcc/expr.cc:11327
0x1036ed4 expand_expr(tree_node*, rtx_def*, machine_mode, expand_modifier)
/repo/gcc-trunk/gcc/expr.h:323
0x1036ed4 expand_return
/repo/gcc-trunk/gcc/cfgexpand.cc:3893
0x1036ed4 expand_gimple_stmt_1
/repo/gcc-trunk/gcc/cfgexpand.cc:4002
0x1036ed4 expand_gimple_stmt
/repo/gcc-trunk/gcc/cfgexpand.cc:4111
0x103d15e expand_gimple_basic_block
/repo/gcc-trunk/gcc/cfgexpand.cc:6167
0x103ee47 execute
/repo/gcc-trunk/gcc/cfgexpand.cc:6906
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-r15-4963-20241105175800-g161e246cf32-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/15.0.0/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 --enable-libsanitizer
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r15-4963-20241105175800-g161e246cf32-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20241105 (experimental) (GCC)
