From: Ian Lance Taylor <ian@airs.com>
Date: Fri, 1 Apr 2005 15:27:58 +0000 (+0000)
Subject: final.c (final_scan_insn): Revert part of 2005-03-30 patch...
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a278573900ad32231f8d3412cd06b3cc37ac749c;p=gcc.git

final.c (final_scan_insn): Revert part of 2005-03-30 patch...

	* final.c (final_scan_insn): Revert part of 2005-03-30 patch: when
	doing a peephole optimization, once again put any notes in the
	proper position.

From-SVN: r97399
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 56a28793ffe..02d6e23b62f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2005-04-01  Ian Lance Taylor  <ian@airs.com>
+
+	* final.c (final_scan_insn): Revert part of 2005-03-30 patch: when
+	doing a peephole optimization, once again put any notes in the
+	proper position.
+
 2005-04-01  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* bb-reorder.c, fold-const.c, varasm.c: Fix comment typos.
diff --git a/gcc/final.c b/gcc/final.c
index 76337244e4a..ea842550cfb 100644
--- a/gcc/final.c
+++ b/gcc/final.c
@@ -2306,11 +2306,23 @@ final_scan_insn (rtx insn, FILE *file, int optimize ATTRIBUTE_UNUSED,
 	       emit them before the peephole.  */
 	    if (next != 0 && next != NEXT_INSN (insn))
 	      {
-		rtx note;
+		rtx note, prev = PREV_INSN (insn);
 
 		for (note = NEXT_INSN (insn); note != next;
 		     note = NEXT_INSN (note))
 		  final_scan_insn (note, file, optimize, nopeepholes, seen);
+
+		/* Put the notes in the proper position for a later
+		   rescan.  For example, the SH target can do this
+		   when generating a far jump in a delayed branch
+		   sequence.  */
+		note = NEXT_INSN (insn);
+		PREV_INSN (note) = prev;
+		NEXT_INSN (prev) = note;
+		NEXT_INSN (PREV_INSN (next)) = insn;
+		PREV_INSN (insn) = PREV_INSN (next);
+		NEXT_INSN (insn) = next;
+		PREV_INSN (next) = insn;
 	      }
 
 	    /* PEEPHOLE might have changed this.  */