Add REG_MAYBE_DEAD note to frame pointer initialisation instruction.

From-SVN: r48912

Add REG_MAYBE_DEAD note to frame pointer initialisation instruction.
From-SVN: r48912
2e99323f · Nick Clifton · Nick Clifton · e1886ae0 · 2e99323f · 2e99323f
Commit 2e99323f authored Jan 16, 2002 by Nick Clifton Committed by Nick Clifton Jan 16, 2002
Hide whitespace changes
Inline Side-by-side

Showing with 11 additions and 1 deletions

gcc/ChangeLog
+7 -0

gcc/config/arm/arm.c
+4 -1

No files found.
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+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:

--- 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));
 	}
    }