https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98872
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Peter Bergner <berg...@gcc.gnu.org>: https://gcc.gnu.org/g:a33927c9ab4af3f4595251ce0c8ba54db821b039 commit r11-7249-ga33927c9ab4af3f4595251ce0c8ba54db821b039 Author: Peter Bergner <berg...@linux.ibm.com> Date: Mon Feb 15 10:38:33 2021 -0600 rtl-optimization: Fix uninitialized use of opaque mode variable ICE [PR98872] The initialize_uninitialized_regs function emits (set (reg:) (CONST0_RTX)) for all uninitialized pseudo uses. However, some modes (eg, opaque modes) may not have a CONST0_RTX defined, leading to an ICE when we try and create the initialization insn. The fix is to skip emitting the initialization if there is no CONST0_RTX defined for the mode. 2021-02-15 Peter Bergner <berg...@linux.ibm.com> gcc/ PR rtl-optimization/98872 * init-regs.c (initialize_uninitialized_regs): Skip initialization if CONST0_RTX is NULL. gcc/testsuite/ PR rtl-optimization/98872 * gcc.target/powerpc/pr98872.c: New test.
