re PR target/29250 (internal compiler error: in extract_insn, at recog.c:2084)

2006-10-13  David Edelsohn  <edelsohn@gnu.org>
            Ian Lance Taylor  <ian@airs.com>

        PR middle-end/29250
        * expr.c (expand_expr_real_1) <NON_LVALUE_EXPR, NOP_EXPR,
        CONVERT_EXPR>: Change EXPAND_SUM modifier to EXPAND_NORMAL when
        recursing.

Co-Authored-By: Ian Lance Taylor <ian@airs.com>

From-SVN: r117724

gcc/ChangeLog

+2006-10-13  David Edelsohn  <edelsohn@gnu.org>
+	    Ian Lance Taylor  <ian@airs.com>
+
+	PR middle-end/29250
+	* expr.c (expand_expr_real_1) <NON_LVALUE_EXPR, NOP_EXPR,
+	CONVERT_EXPR>: Change EXPAND_SUM modifier to EXPAND_NORMAL when
+	recursing.
+
 2006-10-14  Kazu Hirata  <kazu@codesourcery.com>
 
 	* config/score/score.c, config/score/score.h: Fix comment

gcc/expr.c

@@ -7739,7 +7739,8 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
 	  return REDUCE_BIT_FIELD (op0);
 	}
 
-      op0 = expand_expr (TREE_OPERAND (exp, 0), NULL_RTX, mode, modifier);
+      op0 = expand_expr (TREE_OPERAND (exp, 0), NULL_RTX, mode,
+			 modifier == EXPAND_SUM ? EXPAND_NORMAL : modifier);
       if (GET_MODE (op0) == mode)
 	;