https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88905
Bug ID: 88905 Summary: [8/9 Regression] ICE: in decompose, at rtl.h:2253 with -mabm and __builtin_popcountll Product: gcc Version: 9.0 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: i686-pc-linux-gnu Created attachment 45459 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45459&action=edit reduced testcase Compiler output: $ i686-pc-linux-gnu-gcc -Og -fno-tree-ccp -mabm testcase.c during RTL pass: cse1 testcase.c: In function 'foo': testcase.c:16:1: internal compiler error: in decompose, at rtl.h:2266 16 | } | ^ 0xc79fa0 wi::int_traits<std::pair<rtx_def*, machine_mode> >::decompose(long*, unsigned int, std::pair<rtx_def*, machine_mode> const&) /repo/gcc-trunk/gcc/rtl.h:2264 0xc79fa0 wide_int_ref_storage<false, true>::wide_int_ref_storage<std::pair<rtx_def*, machine_mode> >(std::pair<rtx_def*, machine_mode> const&) /repo/gcc-trunk/gcc/wide-int.h:1004 0xc79fa0 generic_wide_int<wide_int_ref_storage<false, true> >::generic_wide_int<std::pair<rtx_def*, machine_mode> >(std::pair<rtx_def*, machine_mode> const&) /repo/gcc-trunk/gcc/wide-int.h:780 0xc79fa0 simplify_const_unary_operation(rtx_code, machine_mode, rtx_def*, machine_mode) /repo/gcc-trunk/gcc/simplify-rtx.c:1797 0xc74320 simplify_unary_operation(rtx_code, machine_mode, rtx_def*, machine_mode) /repo/gcc-trunk/gcc/simplify-rtx.c:873 0x16d8047 fold_rtx /repo/gcc-trunk/gcc/cse.c:3347 0x16da79a canonicalize_insn /repo/gcc-trunk/gcc/cse.c:4489 0x16da79a cse_insn /repo/gcc-trunk/gcc/cse.c:4581 0x16e1838 cse_extended_basic_block /repo/gcc-trunk/gcc/cse.c:6662 0x16e1838 cse_main /repo/gcc-trunk/gcc/cse.c:6841 0x16e2806 rest_of_handle_cse /repo/gcc-trunk/gcc/cse.c:7678 0x16e2806 execute /repo/gcc-trunk/gcc/cse.c:7721 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. $ i686-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-i686/bin/i686-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-268059-checking-yes-rtl-df-extra-i686/bin/../libexec/gcc/i686-pc-linux-gnu/9.0.0/lto-wrapper Target: i686-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 --with-sysroot=/usr/i686-pc-linux-gnu --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=i686-pc-linux-gnu --with-ld=/usr/bin/i686-pc-linux-gnu-ld --with-as=/usr/bin/i686-pc-linux-gnu-as --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-268059-checking-yes-rtl-df-extra-i686 Thread model: posix gcc version 9.0.0 20190118 (experimental) (GCC)