expr.c (expand_expr, [...]): Copy memory attributes when making new MEM.

* expr.c (expand_expr, case COMPONENT_EXPR): Copy memory attributes when making new MEM. From-SVN: r36412

expr.c (expand_expr, [...]): Copy memory attributes when making new MEM.
* expr.c (expand_expr, case COMPONENT_EXPR): Copy memory attributes when making new MEM. From-SVN: r36412
fe7a8445 · Richard Kenner · Richard Kenner · 9985f210 · fe7a8445 · fe7a8445
Commit fe7a8445 authored Sep 14, 2000 by Richard Kenner Committed by Richard Kenner Sep 14, 2000
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gcc/ChangeLog
+3 -0

gcc/expr.c
+8 -2

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
 Thu Sep 14 12:10:16 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

+	* expr.c (expand_expr, case COMPONENT_EXPR): Copy memory attributes
+	when making new MEM.
+
 	* Makefile.in (LN): Remove duplicate definition.

 2000-09-12  Bernd Schmidt  <bernds@redhat.co.uk>

--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -6939,8 +6939,14 @@ expand_expr (exp, target, tmode, modifier)
 	/* Get a reference to just this component.  */
 	if (modifier == EXPAND_CONST_ADDRESS
 	    || modifier == EXPAND_SUM || modifier == EXPAND_INITIALIZER)
-	  op0 = gen_rtx_MEM (mode1, plus_constant (XEXP (op0, 0),
-						   (bitpos / BITS_PER_UNIT)));
+	  {
+	    rtx new = gen_rtx_MEM (mode1,
+				   plus_constant (XEXP (op0, 0),
+						  (bitpos / BITS_PER_UNIT)));
+
+	    MEM_COPY_ATTRIBUTES (new, op0);
+	    op0 = new;
+	  }
 	else
 	  op0 = change_address (op0, mode1,
 				plus_constant (XEXP (op0, 0),