From 92691d7d53d25d4372c7c3fdde0f52097ddd051b Mon Sep 17 00:00:00 2001 From: Jeff Law Date: Mon, 23 Nov 1998 02:39:24 -0700 Subject: [PATCH] caller-save.c (insert_one_insn): Initialize the live_before and live_after register sets. ( * caller-save.c (insert_one_insn): Initialize the live_before and live_after register sets. From-SVN: r23789 --- gcc/caller-save.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/gcc/caller-save.c b/gcc/caller-save.c index 371b65219e2..5fffe344642 100644 --- a/gcc/caller-save.c +++ b/gcc/caller-save.c @@ -728,6 +728,10 @@ insert_one_insn (chain, before_p, code, pat) chain->prev = new; new->next = chain; new->insn = emit_insn_before (pat, insn); + /* ??? It would be nice if we could exclude the already / still saved + registers from the live sets. */ + COPY_REG_SET (new->live_before, chain->live_before); + COPY_REG_SET (new->live_after, chain->live_before); if (chain->insn == basic_block_head[chain->block]) basic_block_head[chain->block] = new->insn; } @@ -739,6 +743,10 @@ insert_one_insn (chain, before_p, code, pat) chain->next = new; new->prev = chain; new->insn = emit_insn_after (pat, insn); + /* ??? It would be nice if we could exclude the already / still saved + registers from the live sets, and observe REG_UNUSED notes. */ + COPY_REG_SET (new->live_before, chain->live_after); + COPY_REG_SET (new->live_after, chain->live_after); if (chain->insn == basic_block_end[chain->block]) basic_block_end[chain->block] = new->insn; } -- 2.30.2