https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111971
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Vladimir Makarov <vmaka...@gcc.gnu.org>: https://gcc.gnu.org/g:9119b008b4195e06012a485ec01a8bb0e43266be commit r14-5037-g9119b008b4195e06012a485ec01a8bb0e43266be Author: Vladimir N. Makarov <vmaka...@redhat.com> Date: Tue Oct 31 10:54:43 2023 -0400 [RA]: Fixing LRA cycling for multi-reg variable containing a fixed reg PR111971 test case uses a multi-reg variable containing a fixed reg. LRA rejects such multi-reg because of this when matching the constraint for an asm insn. The rejection results in LRA cycling. The patch fixes this issue. gcc/ChangeLog: PR rtl-optimization/111971 * lra-constraints.cc: (process_alt_operands): Don't check start hard regs for regs originated from register variables. gcc/testsuite/ChangeLog: PR rtl-optimization/111971 * gcc.target/powerpc/pr111971.c: New test.
