From 146135d6db182282472ae6bf16b051128c0db85b Mon Sep 17 00:00:00 2001 From: Richard Kenner Date: Fri, 9 Jun 1995 18:05:54 -0400 Subject: [PATCH] (cse_basic_block): Fix test for whether block ends with a barrier. Return next insn, not 0, if block ends in a barrier. From-SVN: r9916 --- gcc/cse.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/gcc/cse.c b/gcc/cse.c index 9b3aa2e..7f610ce 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -8429,22 +8429,25 @@ cse_basic_block (from, to, next_branch, around_loop) && GET_CODE (to) == CODE_LABEL && --LABEL_NUSES (to) == to_usage) { struct cse_basic_block_data val; + rtx prev; insn = NEXT_INSN (to); if (LABEL_NUSES (to) == 0) - delete_insn (to); + insn = delete_insn (to); - /* Find the end of the following block. Note that we won't be - following branches in this case. If TO was the last insn - in the function, we are done. Similarly, if we deleted the - insn after TO, it must have been because it was preceded by - a BARRIER. In that case, we are done with this block because it - has no continuation. */ - - if (insn == 0 || INSN_DELETED_P (insn)) + /* If TO was the last insn in the function, we are done. */ + if (insn == 0) return 0; + /* If TO was preceded by a BARRIER we are done with this block + because it has no continuation. */ + prev = prev_nonnote_insn (to); + if (prev && GET_CODE (prev) == BARRIER) + return insn; + + /* Find the end of the following block. Note that we won't be + following branches in this case. */ to_usage = 0; val.path_size = 0; cse_end_of_basic_block (insn, &val, 0, 0, 0); -- 2.7.4