From: Sven Verdoolaege <skimo@kotnet.org>
Date: Mon, 16 Aug 2010 12:36:58 +0000 (+0200)
Subject: isl_input.c: read_term: allow terms starting with negative constant
X-Git-Tag: isl-0.04~25
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=030a5fcdc2047f3ed59d11ab085482641421dc02;p=platform%2Fupstream%2Fisl.git

isl_input.c: read_term: allow terms starting with negative constant

In particular, we used to fail to parse "1-3x" because -3 is treated
as a negative constant.  Now, we treat is in the same way as "1+-3x".

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
---

diff --git a/isl_input.c b/isl_input.c
index 075ad8d..10c4820 100644
--- a/isl_input.c
+++ b/isl_input.c
@@ -1319,9 +1319,8 @@ static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
 			    isl_int_is_neg(tok->u.v)) {
 			struct isl_qpolynomial *qp2;
 
-			qp2 = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
-							tok->u.v);
-			isl_token_free(tok);
+			isl_stream_push_token(s, tok);
+			qp2 = read_factor(s, bmap, v);
 			qp = isl_qpolynomial_add(qp, qp2);
 		} else {
 			isl_stream_push_token(s, tok);