[pushed]LRA]: Fix asserts for output stack pointer reloads

[Vladimir Makarov via Gcc-patches]

The following patch fixes useless asserts in my latest patch 
implementing output stack pointer reloads.
commit 18b417fe1a46d37738243267c1f559cd0acc4886
Author: Vladimir N. Makarov <vmaka...@redhat.com>
Date:   Sun Aug 13 20:54:58 2023 -0400
    [LRA]: Fix asserts for output stack pointer reloads
    
    The patch implementing output stack pointer reloads contained superfluous
    asserts.  The patch makes them useful.
    
    gcc/ChangeLog:
    
            * lra-constraints.cc (curr_insn_transform): Set done_p up and
            check it on true after processing output stack pointer reload.

diff --git a/gcc/lra-constraints.cc b/gcc/lra-constraints.cc
index 26239908747..8d9443adeb6 100644
--- a/gcc/lra-constraints.cc
+++ b/gcc/lra-constraints.cc
@@ -4852,6 +4852,7 @@ curr_insn_transform (bool check_only_p)
            && SET_DEST (set) == stack_pointer_rtx)
          {
            lra_assert (!done_p);
+           done_p = true;
            curr_id->sp_offset = 0;
            lra_insn_recog_data_t id = lra_get_insn_recog_data (insn);
            id->sp_offset = sp_offset;
@@ -4860,7 +4861,7 @@ curr_insn_transform (bool check_only_p)
                       "            Moving sp offset from insn %u to %u\n",
                       INSN_UID (curr_insn), INSN_UID (insn));
          }
-      lra_assert (!done_p);
+      lra_assert (done_p);
     }
   return change_p;
 }