* tree.def (REDUC_PLUS_EXPR): Fix up comment.

From-SVN: r192377

* tree.def (REDUC_PLUS_EXPR): Fix up comment.
From-SVN: r192377
d2a934a5 · Jakub Jelinek · Jakub Jelinek · db9310ef · d2a934a5 · d2a934a5
Commit d2a934a5 authored Oct 11, 2012 by Jakub Jelinek Committed by Jakub Jelinek Oct 11, 2012
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gcc/ChangeLog
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gcc/tree.def
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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
 2012-10-11  Jakub Jelinek  <jakub@redhat.com>

+	* tree.def (REDUC_PLUS_EXPR): Fix up comment.
+
 	* fold-const.c (fold_unary_loc): Handle REDUC_MIN_EXPR,
 	REDUC_MAX_EXPR and REDUC_PLUS_EXPR.


--- a/gcc/tree.def
+++ b/gcc/tree.def
@@ -1093,8 +1093,11 @@ DEFTREECODE (TRANSACTION_EXPR, "transaction_expr", tcc_expression, 1)
   Operations that take a vector of elements and "reduce" it to a scalar
   result (e.g. summing the elements of the vector, finding the minimum over
   the vector elements, etc).
-   Operand 0 is a vector; the first element in the vector has the result.
-   Operand 1 is a vector.  */
+   Operand 0 is a vector.
+   The expression returns a vector of the same type, with the first
+   element in the vector holding the result of the reduction of all elements
+   of the operand.  The content of the other elements in the returned vector
+   is undefined.  */
 DEFTREECODE (REDUC_MAX_EXPR, "reduc_max_expr", tcc_unary, 1)
 DEFTREECODE (REDUC_MIN_EXPR, "reduc_min_expr", tcc_unary, 1)
 DEFTREECODE (REDUC_PLUS_EXPR, "reduc_plus_expr", tcc_unary, 1)