https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96263
Bug ID: 96263 Summary: [10/11 Regression] ICE: in lra_assign, at lra-assigns.c:1648 with -O -flive-range-shrinkage -fnon-call-exceptions -msse4 --param=max-sched-ready-insns=1 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 Target: x86_64-pc-linux-gnu Created attachment 48904 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48904&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O -flive-range-shrinkage -fnon-call-exceptions -msse4 --param=max-sched-ready-insns=1 testcase.c testcase.c: In function 'm': testcase.c:12:1: warning: AVX512F vector return without AVX512F enabled changes the ABI [-Wpsabi] 12 | a m(unsigned short n, __int128 o) { | ^ during RTL pass: reload testcase.c:27:1: internal compiler error: in lra_assign, at lra-assigns.c:1648 27 | } | ^ 0xefe25b lra_assign(bool&) /repo/gcc-trunk/gcc/lra-assigns.c:1648 0xef7f3c lra(_IO_FILE*) /repo/gcc-trunk/gcc/lra.c:2465 0xea7949 do_reload /repo/gcc-trunk/gcc/ira.c:5525 0xea7949 execute /repo/gcc-trunk/gcc/ira.c:5711 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-r11-2246-20200721142816-gc850a642e1d-checking-yes-rtl-df-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,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-r11-2246-20200721142816-gc850a642e1d-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 11.0.0 20200721 (experimental) (GCC)