The following patch fixes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97933
The patch was successfully bootstrapped on x86-64 and s390x.
commit fb352136db34a7adbc7be6a1e4e90b56bc632ebd (HEAD -> master)
Author: Vladimir N. Makarov <vmaka...@redhat.com>
Date: Tue Nov 24 11:25:16 2020 -0500
[PR97933] LRA: find correctly last empty dest block.
gcc/
2020-11-24 Vladimir Makarov <vmaka...@redhat.com>
PR bootstrap/97933
* lra.c (lra_process_new_insns): Stop on the first real insn after
head of e->dest.
diff --git a/gcc/lra.c b/gcc/lra.c
index b318cfd7456..4ec0f466376 100644
--- a/gcc/lra.c
+++ b/gcc/lra.c
@@ -1908,11 +1908,9 @@ lra_process_new_insns (rtx_insn *insn, rtx_insn *before, rtx_insn *after,
tmp = NEXT_INSN (tmp);
if (NOTE_INSN_BASIC_BLOCK_P (tmp))
tmp = NEXT_INSN (tmp);
- for (curr = tmp;
- curr != NULL
- && (!INSN_P (curr) || BLOCK_FOR_INSN (curr) == e->dest);
- curr = NEXT_INSN (curr))
- ;
+ for (curr = tmp; curr != NULL; curr = NEXT_INSN (curr))
+ if (INSN_P (curr))
+ break;
/* Do not put reload insns if it is the last BB
without actual insns. In this case the reload insns
can get null BB after emitting. */
