https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98287
Bug ID: 98287
Summary: [10/11 Regression] ICE: in expand_expr_real_2, at
expr.c:10000 with -O2 -fno-tree-ccp -fno-tree-forwprop
Product: gcc
Version: 11.0
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
Created attachment 49768
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49768&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O2 -fno-tree-ccp -fno-tree-forwprop testcase.c
during RTL pass: expand
testcase.c: In function 'bar':
testcase.c:7:22: internal compiler error: in expand_expr_real_2, at
expr.c:10000
7 | return v >> s << s | v >> s >> 63;
| ~~~~~~~~~~~~^~~~~~~~~~~~~~
0x661c3d expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
/repo/gcc-trunk/gcc/expr.c:10000
0xc21188 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/repo/gcc-trunk/gcc/expr.c:10201
0xaeb6ab expand_expr
/repo/gcc-trunk/gcc/expr.h:282
0xaeb6ab expand_return
/repo/gcc-trunk/gcc/cfgexpand.c:3764
0xaeb6ab expand_gimple_stmt_1
/repo/gcc-trunk/gcc/cfgexpand.c:3873
0xaeb6ab expand_gimple_stmt
/repo/gcc-trunk/gcc/cfgexpand.c:3999
0xaf0c4b expand_gimple_basic_block
/repo/gcc-trunk/gcc/cfgexpand.c:6036
0xaf27c6 execute
/repo/gcc-trunk/gcc/cfgexpand.c:6720
Please submit a full bug report,
with preprocessed source if appropriate.
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/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r11-6041-20201215101608-g69bd5d473d2-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/11.0.0/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
--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-r11-6041-20201215101608-g69bd5d473d2-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 11.0.0 20201215 (experimental) (GCC)
