https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94980
Bug ID: 94980 Summary: [10/11 Regression] ICE: verify_gimple failed: position plus size exceeds size of referenced object in 'bit_field_ref' with -mavx512vl Product: gcc Version: 11.0 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 Created attachment 48473 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48473&action=edit reduced testcase Maybe related to PR94438 Compiler output: $ x86_64-pc-linux-gnu-gcc -mavx512vl testcase.c testcase.c: In function 'foo': testcase.c:4:1: error: position plus size exceeds size of referenced object in 'bit_field_ref' 4 | foo(void) | ^~~ _11 = BIT_FIELD_REF <_10, 8, 8>; testcase.c:4:1: error: position plus size exceeds size of referenced object in 'bit_field_ref' _14 = BIT_FIELD_REF <_13, 8, 8>; testcase.c:4:1: error: position plus size exceeds size of referenced object in 'bit_field_ref' _19 = BIT_FIELD_REF <_18, 8, 16>; testcase.c:4:1: error: position plus size exceeds size of referenced object in 'bit_field_ref' _22 = BIT_FIELD_REF <_21, 8, 16>; testcase.c:4:1: error: position plus size exceeds size of referenced object in 'bit_field_ref' _27 = BIT_FIELD_REF <_26, 8, 24>; testcase.c:4:1: error: position plus size exceeds size of referenced object in 'bit_field_ref' _30 = BIT_FIELD_REF <_29, 8, 24>; during GIMPLE pass: veclower testcase.c:4:1: internal compiler error: verify_gimple failed 0x10ec191 verify_gimple_in_cfg(function*, bool) /repo/gcc-trunk/gcc/tree-cfg.c:5470 0xfa0c6f execute_function_todo /repo/gcc-trunk/gcc/passes.c:1985 0xfa1a4e execute_todo /repo/gcc-trunk/gcc/passes.c:2039 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-amd64/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r11-158-20200507093816-gb24fc8a692e-checking-yes-rtl-extra-nobootstrap-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,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-r11-158-20200507093816-gb24fc8a692e-checking-yes-rtl-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 11.0.0 20200507 (experimental) (GCC)