diff options
Diffstat (limited to 'gcc/local-alloc.c')
| -rw-r--r-- | gcc/local-alloc.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/local-alloc.c b/gcc/local-alloc.c index 6f24968..f46b9c9 100644 --- a/gcc/local-alloc.c +++ b/gcc/local-alloc.c @@ -1062,10 +1062,11 @@ update_equiv_regs (void) { rtx init_insn = XEXP (reg_equiv[regno].init_insns, 0); if (validate_equiv_mem (init_insn, src, dest) - && ! memref_used_between_p (dest, init_insn, insn)) + && ! memref_used_between_p (dest, init_insn, insn) + /* Attaching a REG_EQUIV note will fail if INIT_INSN has + multiple sets. */ + && set_unique_reg_note (init_insn, REG_EQUIV, copy_rtx (dest))) { - set_unique_reg_note (init_insn, REG_EQUIV, copy_rtx (dest)); - /* This insn makes the equivalence, not the one initializing the register. */ reg_equiv_init[regno] |