From: Nick Clifton <nickc@cambridge.redhat.com>
Date: Wed, 16 Jan 2002 16:37:20 +0000 (+0000)
Subject: Add REG_MAYBE_DEAD note to frame pointer initialisation instruction.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2e99323f30f30680a3b3a69f9c84d9ba136e0ac4;p=gcc.git

Add REG_MAYBE_DEAD note to frame pointer initialisation instruction.

From-SVN: r48912
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7e7ae9f3504..ab046ed9f75 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2002-01-16  Nick Clifton  <nickc@cambridge.redhat.com>
+
+	* config/arm/arm.c (arm_expand_prologue): Add REG_MAYBE_DEAD note
+	to frame pointer initialisation instruction.
+	(thumb_expand_prologue): Add REG_MAYBE_DEAD note to frame pointer
+	initialisation instruction.
+
 2002-01-16  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/5357:
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 00b1b1958fb..8ef7355ec8e 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -8344,7 +8344,10 @@ arm_expand_prologue ()
 	    }
 
 	  insn = gen_rtx_SET (SImode, ip_rtx, insn);
-	  (void) emit_insn (insn);
+	  insn = emit_insn (insn);
+	  /* Add a reg note to stop propogate_one_insn() from barfing.  */
+	  REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_MAYBE_DEAD, ip_rtx,
+						REG_NOTES (insn));
 	}
     }