From 41dfd40ca0582665a5b706a26fbd9b6d0397da76 Mon Sep 17 00:00:00 2001 From: Richard Kenner Date: Tue, 4 Oct 1994 21:42:54 -0400 Subject: [PATCH] Fix error in last change. From-SVN: r8215 --- gcc/expr.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/gcc/expr.c b/gcc/expr.c index 45000764b42..963dae08a0d 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -9109,9 +9109,6 @@ do_jump_for_compare (comparison, if_false_label, if_true_label) rtx prev = get_last_insn (); rtx branch = 0; - if (prev != 0) - prev = PREV_INSN (prev); - /* Output the branch with the opposite condition. Then try to invert what is generated. If more than one insn is a branch, or if the branch is not the last insn written, abort. If we can't invert @@ -9123,14 +9120,17 @@ do_jump_for_compare (comparison, if_false_label, if_true_label) else abort (); - /* Here we get the insn before what was just emitted. - On some machines, emitting the branch can discard - the previous compare insn and emit a replacement. */ + /* Here we get the first insn that was just emitted. It used to be the + case that, on some machines, emitting the branch would discard + the previous compare insn and emit a replacement. This isn't + done anymore, but abort if we see that PREV is deleted. */ + if (prev == 0) - /* If there's only one preceding insn... */ insn = get_insns (); + else if (INSN_DELETED_P (prev)) + abort (); else - insn = NEXT_INSN (NEXT_INSN (prev)); + insn = NEXT_INSN (prev); for (; insn; insn = NEXT_INSN (insn)) if (GET_CODE (insn) == JUMP_INSN) -- 2.30.2