From: Richard Kenner <kenner@gcc.gnu.org>
Date: Tue, 14 Jun 1994 21:32:30 +0000 (-0400)
Subject: (jump_optimize): Don't delete dead insn if it has a REG_RETVAL note.
X-Git-Tag: misc/cutover-egcs-0~6485
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d008e26c417d2a4d950185001cfb89edc18c4923;p=thirdparty%2Fgcc.git

(jump_optimize): Don't delete dead insn if it has a REG_RETVAL note.

From-SVN: r7458
---

diff --git a/gcc/jump.c b/gcc/jump.c
index 05938d2aba1f..08130db9b97a 100644
--- a/gcc/jump.c
+++ b/gcc/jump.c
@@ -550,7 +550,8 @@ jump_optimize (f, cross_jump, noop_moves, after_regscan)
 	       of a reg that's used in notes.  A subsequent optimization
 	       might arrange to use that reg for real.  */	       
 	    && regno_last_note_uid[REGNO (SET_DEST (set))] == INSN_UID (insn)
-	    && ! side_effects_p (SET_SRC (set)))
+	    && ! side_effects_p (SET_SRC (set))
+	    && ! find_reg_note (insn, REG_RETVAL, 0))
 	  delete_insn (insn);
       }