https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99842
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-11 branch has been updated by Peter Bergner <berg...@gcc.gnu.org>: https://gcc.gnu.org/g:aaa8419bcf2ec491c0fd41a526f5817da0cf3ed4 commit r11-8608-gaaa8419bcf2ec491c0fd41a526f5817da0cf3ed4 Author: Peter Bergner <berg...@linux.ibm.com> Date: Sun May 30 22:45:55 2021 -0500 rs6000: MMA test case ICEs using -O3 [PR99842] The mma_assemble_input_operand predicate does not accept reg+reg indexed addresses which can lead to ICEs. The lxv and lxvp instructions have indexed forms (lxvx and lxvpx), so the simple solution is to just allow indexed addresses in the predicate. 2021-05-30 Peter Bergner <berg...@linux.ibm.com> gcc/ PR target/99842 * config/rs6000/predicates.md(mma_assemble_input_operand): Allow indexed form addresses. gcc/testsuite/ PR target/99842 * g++.target/powerpc/pr99842.C: New. (cherry picked from commit df4e0359dad239854af0ea9eacb8e7e3719557d0)