https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84780
Bug ID: 84780 Summary: [8 Regression] wrong code aarch64 with -O3 --param=tree-reassoc-width=32 Product: gcc Version: 8.0 Status: UNCONFIRMED Keywords: wrong-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: aarch64-unknown-linux-gnu Created attachment 43605 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43605&action=edit reduced testcase Output: $ aarch64-unknown-linux-gnu-gcc -O3 --param=tree-reassoc-width=32 testcase.c -static $ ./a.out qemu: uncaught target signal 6 (Aborted) - core dumped Aborted $ aarch64-unknown-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-aarch64/bin/aarch64-unknown-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-258366-checking-yes-rtl-df-extra-aarch64/bin/../libexec/gcc/aarch64-unknown-linux-gnu/8.0.1/lto-wrapper Target: aarch64-unknown-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/aarch64-unknown-linux-gnu --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=aarch64-unknown-linux-gnu --with-ld=/usr/bin/aarch64-unknown-linux-gnu-ld --with-as=/usr/bin/aarch64-unknown-linux-gnu-as --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-258366-checking-yes-rtl-df-extra-aarch64 Thread model: posix gcc version 8.0.1 20180308 (experimental) (GCC) Tested revisions: r258366 - FAIL (PR84748 fix) r258075 - FAIL 7-branch r258055 - OK