(expand_expr, case ADDR_EXPR): If result is ignored, just return

const0_rtx.

From-SVN: r7421

1 files changed, 6 insertions, 0 deletions

diff --git a/gcc/expr.c b/gcc/expr.c
index edfd2ee..2e0f5ef 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -5863,6 +5863,12 @@ expand_expr (exp, target, tmode, modifier)
 			     (modifier == EXPAND_INITIALIZER
 			      ? modifier : EXPAND_CONST_ADDRESS));
 
+	  /* If we are going to ignore the result, OP0 will have been set
+	     to const0_rtx, so just return it.  Don't get confused and
+	     think we are taking the address of the constant.  */
+	  if (ignore)
+	    return op0;
+
 	  /* We would like the object in memory.  If it is a constant,
 	     we can have it be statically allocated into memory.  For
 	     a non-constant (REG, SUBREG or CONCAT), we need to allocate some